Mercurial > repos > blastem
annotate genesis.c @ 1907:b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
author | Michael Pavone <pavone@retrodev.com> |
---|---|
date | Wed, 25 Mar 2020 22:59:59 -0700 |
parents | 2d462aa78349 |
children | 508522f08e4d |
rev | line source |
---|---|
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1 /* |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
2 Copyright 2013-2016 Michael Pavone |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
3 This file is part of BlastEm. |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text. |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
5 */ |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
6 #include "genesis.h" |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
7 #include "blastem.h" |
1414
d94855080529
Move I2C EEPROM and NOR Flash functions out of romdb.c into new files
Michael Pavone <pavone@retrodev.com>
parents:
1401
diff
changeset
|
8 #include "nor.h" |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
9 #include <stdlib.h> |
1188
448ce87b87fc
Fix missing include that prevented building Windows version
Michael Pavone <pavone@retrodev.com>
parents:
1184
diff
changeset
|
10 #include <ctype.h> |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
11 #include <time.h> |
1220
1e7977460d18
Add mising include in genesis.c so the Windows build works again
Michael Pavone <pavone@retrodev.com>
parents:
1215
diff
changeset
|
12 #include <string.h> |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
13 #include "render.h" |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
14 #include "gst.h" |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
15 #include "util.h" |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
16 #include "debug.h" |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
17 #include "gdb_remote.h" |
1478
da1dce39e846
Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
Michael Pavone <pavone@retrodev.com>
parents:
1471
diff
changeset
|
18 #include "saves.h" |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
19 #include "bindings.h" |
1610 | 20 #include "jcart.h" |
1901
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
21 #include "config.h" |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
22 #define MCLKS_NTSC 53693175 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
23 #define MCLKS_PAL 53203395 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
24 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
25 uint32_t MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
26 #define MCLKS_PER_YM 7 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
27 #define MCLKS_PER_Z80 15 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
28 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) |
1291
f17fe0d00626
Adjust Z80 interrupt pulse duration to match hardware measurements
Michael Pavone <pavone@retrodev.com>
parents:
1288
diff
changeset
|
29 #define Z80_INT_PULSE_MCLKS 2573 //measured value is ~171.5 Z80 clocks |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
30 #define DEFAULT_SYNC_INTERVAL MCLKS_LINE |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
31 #define DEFAULT_LOWPASS_CUTOFF 3390 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
32 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
33 //TODO: Figure out the exact value for this |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
34 #define LINES_NTSC 262 |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
35 #define LINES_PAL 313 |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
36 |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
37 #ifdef IS_LIB |
1889
377f110e4cea
Report more accurate frame and sample rates to frontend in libretro target
Michael Pavone <pavone@retrodev.com>
parents:
1876
diff
changeset
|
38 #define MAX_SOUND_CYCLES (MCLKS_PER_YM*NUM_OPERATORS*6) |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
39 #else |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
40 #define MAX_SOUND_CYCLES 100000 |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
41 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
42 |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
43 #ifdef NEW_CORE |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
44 #define Z80_CYCLE cycles |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
45 #define Z80_OPTS opts |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
46 #define z80_handle_code_write(...) |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
47 #else |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
48 #define Z80_CYCLE current_cycle |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
49 #define Z80_OPTS options |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
50 #endif |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
51 |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
52 void genesis_serialize(genesis_context *gen, serialize_buffer *buf, uint32_t m68k_pc) |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
53 { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
54 start_section(buf, SECTION_68000); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
55 m68k_serialize(gen->m68k, m68k_pc, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
56 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
57 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
58 start_section(buf, SECTION_Z80); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
59 z80_serialize(gen->z80, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
60 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
61 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
62 start_section(buf, SECTION_VDP); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
63 vdp_serialize(gen->vdp, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
64 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
65 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
66 start_section(buf, SECTION_YM2612); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
67 ym_serialize(gen->ym, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
68 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
69 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
70 start_section(buf, SECTION_PSG); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
71 psg_serialize(gen->psg, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
72 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
73 |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
74 start_section(buf, SECTION_GEN_BUS_ARBITER); |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
75 save_int8(buf, gen->z80->reset); |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
76 save_int8(buf, gen->z80->busreq); |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
77 save_int16(buf, gen->z80_bank_reg); |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
78 end_section(buf); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
79 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
80 start_section(buf, SECTION_SEGA_IO_1); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
81 io_serialize(gen->io.ports, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
82 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
83 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
84 start_section(buf, SECTION_SEGA_IO_2); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
85 io_serialize(gen->io.ports + 1, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
86 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
87 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
88 start_section(buf, SECTION_SEGA_IO_EXT); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
89 io_serialize(gen->io.ports + 2, buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
90 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
91 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
92 start_section(buf, SECTION_MAIN_RAM); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
93 save_int8(buf, RAM_WORDS * 2 / 1024); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
94 save_buffer16(buf, gen->work_ram, RAM_WORDS); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
95 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
96 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
97 start_section(buf, SECTION_SOUND_RAM); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
98 save_int8(buf, Z80_RAM_BYTES / 1024); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
99 save_buffer8(buf, gen->zram, Z80_RAM_BYTES); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
100 end_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
101 |
1444
14a2834d010c
Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1440
diff
changeset
|
102 cart_serialize(&gen->header, buf); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
103 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
104 |
1690
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
105 static uint8_t *serialize(system_header *sys, size_t *size_out) |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
106 { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
107 genesis_context *gen = (genesis_context *)sys; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
108 uint32_t address; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
109 if (gen->m68k->resume_pc) { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
110 gen->m68k->target_cycle = gen->m68k->current_cycle; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
111 gen->header.save_state = SERIALIZE_SLOT+1; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
112 resume_68k(gen->m68k); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
113 if (size_out) { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
114 *size_out = gen->serialize_size; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
115 } |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
116 return gen->serialize_tmp; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
117 } else { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
118 serialize_buffer state; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
119 init_serialize(&state); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
120 uint32_t address = read_word(4, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k) << 16; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
121 address |= read_word(6, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen, gen->m68k); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
122 genesis_serialize(gen, &state, address); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
123 if (size_out) { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
124 *size_out = state.size; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
125 } |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
126 return state.data; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
127 } |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
128 } |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
129 |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
130 static void ram_deserialize(deserialize_buffer *buf, void *vgen) |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
131 { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
132 genesis_context *gen = vgen; |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
133 uint32_t ram_size = load_int8(buf) * 1024 / 2; |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
134 if (ram_size > RAM_WORDS) { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
135 fatal_error("State has a RAM size of %d bytes", ram_size * 2); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
136 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
137 load_buffer16(buf, gen->work_ram, ram_size); |
1452
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
138 m68k_invalidate_code_range(gen->m68k, 0xE00000, 0x1000000); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
139 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
140 |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
141 static void zram_deserialize(deserialize_buffer *buf, void *vgen) |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
142 { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
143 genesis_context *gen = vgen; |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
144 uint32_t ram_size = load_int8(buf) * 1024; |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
145 if (ram_size > Z80_RAM_BYTES) { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
146 fatal_error("State has a Z80 RAM size of %d bytes", ram_size); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
147 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
148 load_buffer8(buf, gen->zram, ram_size); |
1452
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
149 z80_invalidate_code_range(gen->z80, 0, 0x4000); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
150 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
151 |
1445
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
152 static void update_z80_bank_pointer(genesis_context *gen) |
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
153 { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
154 if (gen->z80_bank_reg < 0x140) { |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
155 gen->z80->mem_pointers[1] = get_native_pointer(gen->z80_bank_reg << 15, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen); |
1445
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
156 } else { |
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
157 gen->z80->mem_pointers[1] = NULL; |
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
158 } |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
159 z80_invalidate_code_range(gen->z80, 0x8000, 0xFFFF); |
1445
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
160 } |
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
161 |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
162 static void bus_arbiter_deserialize(deserialize_buffer *buf, void *vgen) |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
163 { |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
164 genesis_context *gen = vgen; |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
165 gen->z80->reset = load_int8(buf); |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
166 gen->z80->busreq = load_int8(buf); |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
167 gen->z80_bank_reg = load_int16(buf) & 0x1FF; |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
168 } |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
169 |
1636
d2775a242dc6
Make sure M68K sync and target cycles are updated after loading a savestate. Fixes an issue in which loading a savestate would result in things being unresponsive until emulation cycle caught up to whatever the pre-state load sync cycle was
Mike Pavone <pavone@retrodev.com>
parents:
1631
diff
changeset
|
170 static void adjust_int_cycle(m68k_context * context, vdp_context * v_context); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
171 void genesis_deserialize(deserialize_buffer *buf, genesis_context *gen) |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
172 { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
173 register_section_handler(buf, (section_handler){.fun = m68k_deserialize, .data = gen->m68k}, SECTION_68000); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
174 register_section_handler(buf, (section_handler){.fun = z80_deserialize, .data = gen->z80}, SECTION_Z80); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
175 register_section_handler(buf, (section_handler){.fun = vdp_deserialize, .data = gen->vdp}, SECTION_VDP); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
176 register_section_handler(buf, (section_handler){.fun = ym_deserialize, .data = gen->ym}, SECTION_YM2612); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
177 register_section_handler(buf, (section_handler){.fun = psg_deserialize, .data = gen->psg}, SECTION_PSG); |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
178 register_section_handler(buf, (section_handler){.fun = bus_arbiter_deserialize, .data = gen}, SECTION_GEN_BUS_ARBITER); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
179 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports}, SECTION_SEGA_IO_1); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
180 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 1}, SECTION_SEGA_IO_2); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
181 register_section_handler(buf, (section_handler){.fun = io_deserialize, .data = gen->io.ports + 2}, SECTION_SEGA_IO_EXT); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
182 register_section_handler(buf, (section_handler){.fun = ram_deserialize, .data = gen}, SECTION_MAIN_RAM); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
183 register_section_handler(buf, (section_handler){.fun = zram_deserialize, .data = gen}, SECTION_SOUND_RAM); |
1444
14a2834d010c
Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1440
diff
changeset
|
184 register_section_handler(buf, (section_handler){.fun = cart_deserialize, .data = gen}, SECTION_MAPPER); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
185 while (buf->cur_pos < buf->size) |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
186 { |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
187 load_section(buf); |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
188 } |
1445
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
189 update_z80_bank_pointer(gen); |
1636
d2775a242dc6
Make sure M68K sync and target cycles are updated after loading a savestate. Fixes an issue in which loading a savestate would result in things being unresponsive until emulation cycle caught up to whatever the pre-state load sync cycle was
Mike Pavone <pavone@retrodev.com>
parents:
1631
diff
changeset
|
190 adjust_int_cycle(gen->m68k, gen->vdp); |
1690
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
191 free(buf->handlers); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
192 buf->handlers = NULL; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
193 } |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
194 |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
195 #include "m68k_internal.h" //needed for get_native_address_trans, should be eliminated once handling of PC is cleaned up |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
196 static void deserialize(system_header *sys, uint8_t *data, size_t size) |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
197 { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
198 genesis_context *gen = (genesis_context *)sys; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
199 deserialize_buffer buffer; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
200 init_deserialize(&buffer, data, size); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
201 genesis_deserialize(&buffer, gen); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
202 //HACK: Fix this once PC/IR is represented in a better way in 68K core |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
203 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, gen->m68k->last_prefetch_address); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
204 } |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
205 |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
206 uint16_t read_dma_value(uint32_t address) |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
207 { |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
208 genesis_context *genesis = (genesis_context *)current_system; |
1420
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
209 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area |
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
210 if ((address >= 0xA00000 && address < 0xB00000) || (address >= 0xC00000 && address <= 0xE00000)) { |
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
211 return 0; |
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
212 } |
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
213 |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
214 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do multiply by 2 |
1420
975b5b7eaa77
Fix DMA from byte-wide SRAM
Michael Pavone <pavone@retrodev.com>
parents:
1416
diff
changeset
|
215 return read_word(address * 2, (void **)genesis->m68k->mem_pointers, &genesis->m68k->options->gen, genesis->m68k); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
216 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
217 |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
218 static uint16_t get_open_bus_value(system_header *system) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
219 { |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
220 genesis_context *genesis = (genesis_context *)system; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
221 return read_dma_value(genesis->m68k->last_prefetch_address/2); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
222 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
223 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
224 static void adjust_int_cycle(m68k_context * context, vdp_context * v_context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
225 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
226 //static int old_int_cycle = CYCLE_NEVER; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
227 genesis_context *gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
228 if (context->sync_cycle - context->current_cycle > gen->max_cycles) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
229 context->sync_cycle = context->current_cycle + gen->max_cycles; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
230 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
231 context->int_cycle = CYCLE_NEVER; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
232 if ((context->status & 0x7) < 6) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
233 uint32_t next_vint = vdp_next_vint(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
234 if (next_vint != CYCLE_NEVER) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
235 context->int_cycle = next_vint; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
236 context->int_num = 6; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
237 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
238 if ((context->status & 0x7) < 4) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
239 uint32_t next_hint = vdp_next_hint(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
240 if (next_hint != CYCLE_NEVER) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
241 next_hint = next_hint < context->current_cycle ? context->current_cycle : next_hint; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
242 if (next_hint < context->int_cycle) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
243 context->int_cycle = next_hint; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
244 context->int_num = 4; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
245 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
246 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
247 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
248 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
249 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
250 if (context->int_cycle > context->current_cycle && context->int_pending == INT_PENDING_SR_CHANGE) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
251 context->int_pending = INT_PENDING_NONE; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
252 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
253 /*if (context->int_cycle != old_int_cycle) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
254 printf("int cycle changed to: %d, level: %d @ %d(%d), frame: %d, vcounter: %d, hslot: %d, mask: %d, hint_counter: %d\n", context->int_cycle, context->int_num, v_context->cycles, context->current_cycle, v_context->frame, v_context->vcounter, v_context->hslot, context->status & 0x7, v_context->hint_counter); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
255 old_int_cycle = context->int_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
256 }*/ |
1303
208803173ebc
Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents:
1291
diff
changeset
|
257 |
1304
5b90d7669eee
Fix exit trace mode edge case. Call do_sync if trace mode bit is changed in eori sr
Michael Pavone <pavone@retrodev.com>
parents:
1303
diff
changeset
|
258 if (context->status & M68K_STATUS_TRACE || context->trace_pending) { |
1303
208803173ebc
Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents:
1291
diff
changeset
|
259 context->target_cycle = context->current_cycle; |
208803173ebc
Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents:
1291
diff
changeset
|
260 return; |
208803173ebc
Implemented M68K trace mode. Some edge cases/SR update paths still need work
Michael Pavone <pavone@retrodev.com>
parents:
1291
diff
changeset
|
261 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
262 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
263 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
264 if (context->should_return) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
265 context->target_cycle = context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
266 } else if (context->target_cycle < context->current_cycle) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
267 //Changes to SR can result in an interrupt cycle that's in the past |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
268 //This can cause issues with the implementation of STOP though |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
269 context->target_cycle = context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
270 } |
1364
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
271 if (context->target_cycle == context->int_cycle) { |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
272 //Currently delays from Z80 access and refresh are applied only when we sync |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
273 //this can cause extra latency when it comes to interrupts |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
274 //to prevent this code forces some extra synchronization in the period immediately before an interrupt |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
275 if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev1) { |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
276 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev1; |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
277 } else if ((context->target_cycle - context->current_cycle) > gen->int_latency_prev2) { |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
278 context->target_cycle = context->sync_cycle = context->int_cycle - gen->int_latency_prev2; |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
279 } else { |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
280 context->target_cycle = context->sync_cycle = context->current_cycle; |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
281 } |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
282 |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
283 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
284 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n", |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
285 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7), |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
286 v_context->regs[REG_MODE_2] & 0x20, v_context->regs[REG_MODE_1] & 0x10, v_context->hint_counter, v_context->regs[REG_HINT], v_context->cycles / MCLKS_LINE);*/ |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
287 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
288 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
289 //#define DO_DEBUG_PRINT |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
290 #ifdef DO_DEBUG_PRINT |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
291 #define dprintf printf |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
292 #define dputs puts |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
293 #else |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
294 #define dprintf |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
295 #define dputs |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
296 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
297 |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
298 static void z80_next_int_pulse(z80_context * z_context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
299 { |
1108
87114df913ec
Fix Z80 interrupt pulse duration. Fixes inconsistent music playback speed in Sonic 2 introduced in 0.4.1
Michael Pavone <pavone@retrodev.com>
parents:
1105
diff
changeset
|
300 genesis_context * gen = z_context->system; |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
301 #ifdef NEW_CORE |
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
302 z_context->int_cycle = vdp_next_vint_z80(gen->vdp); |
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
303 z_context->int_end_cycle = z_context->int_cycle + Z80_INT_PULSE_MCLKS; |
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
304 z_context->int_value = 0xFF; |
1766
1dc718581aac
Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents:
1753
diff
changeset
|
305 z80_sync_cycle(z_context, z_context->sync_cycle); |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
306 #else |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
307 z_context->int_pulse_start = vdp_next_vint_z80(gen->vdp); |
1291
f17fe0d00626
Adjust Z80 interrupt pulse duration to match hardware measurements
Michael Pavone <pavone@retrodev.com>
parents:
1288
diff
changeset
|
308 z_context->int_pulse_end = z_context->int_pulse_start + Z80_INT_PULSE_MCLKS; |
1471
2e6320d261ff
Implemented Z80 IM 2 and attempted correct intack cycle delay
Michael Pavone <pavone@retrodev.com>
parents:
1452
diff
changeset
|
309 z_context->im2_vector = 0xFF; |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
310 #endif |
1108
87114df913ec
Fix Z80 interrupt pulse duration. Fixes inconsistent music playback speed in Sonic 2 introduced in 0.4.1
Michael Pavone <pavone@retrodev.com>
parents:
1105
diff
changeset
|
311 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
312 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
313 static void sync_z80(z80_context * z_context, uint32_t mclks) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
314 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
315 #ifndef NO_Z80 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
316 if (z80_enabled) { |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
317 #ifdef NEW_CORE |
1766
1dc718581aac
Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents:
1753
diff
changeset
|
318 if (z_context->int_cycle == 0xFFFFFFFFU) { |
1dc718581aac
Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents:
1753
diff
changeset
|
319 z80_next_int_pulse(z_context); |
1dc718581aac
Fix Z80 interrupts in Gen/MD mode when using new core. Disable CPU debug log in new Z80 core
Michael Pavone <pavone@retrodev.com>
parents:
1753
diff
changeset
|
320 } |
1753
33ec5df77fac
Integration of new Z80 core is sort of working now
Michael Pavone <pavone@retrodev.com>
parents:
1752
diff
changeset
|
321 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
322 z80_run(z_context, mclks); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
323 } else |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
324 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
325 { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
326 z_context->Z80_CYCLE = mclks; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
327 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
328 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
329 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
330 static void sync_sound(genesis_context * gen, uint32_t target) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
331 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
332 //printf("YM | Cycle: %d, bpos: %d, PSG | Cycle: %d, bpos: %d\n", gen->ym->current_cycle, gen->ym->buffer_pos, gen->psg->cycles, gen->psg->buffer_pos * 2); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
333 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
334 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
335 //printf("Running PSG to cycle %d\n", cur_target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
336 psg_run(gen->psg, cur_target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
337 //printf("Running YM-2612 to cycle %d\n", cur_target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
338 ym_run(gen->ym, cur_target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
339 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
340 psg_run(gen->psg, target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
341 ym_run(gen->ym, target); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
342 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
343 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
344 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
345 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
346 //TODO: move this inside the system context |
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
347 static uint32_t last_frame_num; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
348 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
349 //My refresh emulation isn't currently good enough and causes more problems than it solves |
1286
ca0383656a82
Basic refresh emulation that doesn't break direct color DMA demos. Fixes sound after entering pause menu in Pacman 2: The New Adventures
Michael Pavone <pavone@retrodev.com>
parents:
1285
diff
changeset
|
350 #define REFRESH_EMULATION |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
351 #ifdef REFRESH_EMULATION |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
352 #define REFRESH_INTERVAL 128 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
353 #define REFRESH_DELAY 2 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
354 uint32_t last_sync_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
355 uint32_t refresh_counter; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
356 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
357 |
1170
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
358 #include <limits.h> |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
359 #define ADJUST_BUFFER (8*MCLKS_LINE*313) |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
360 #define MAX_NO_ADJUST (UINT_MAX-ADJUST_BUFFER) |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
361 |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
362 m68k_context * sync_components(m68k_context * context, uint32_t address) |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
363 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
364 genesis_context * gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
365 vdp_context * v_context = gen->vdp; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
366 z80_context * z_context = gen->z80; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
367 #ifdef REFRESH_EMULATION |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
368 //lame estimation of refresh cycle delay |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
369 refresh_counter += context->current_cycle - last_sync_cycle; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
370 if (!gen->bus_busy) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
371 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL)); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
372 } |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
373 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
374 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
375 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
376 uint32_t mclks = context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
377 sync_z80(z_context, mclks); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
378 sync_sound(gen, mclks); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
379 vdp_run_context(v_context, mclks); |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
380 if (mclks >= gen->reset_cycle) { |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
381 gen->reset_requested = 1; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
382 context->should_return = 1; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
383 gen->reset_cycle = CYCLE_NEVER; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
384 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
385 if (v_context->frame != last_frame_num) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
386 //printf("reached frame end %d | MCLK Cycles: %d, Target: %d, VDP cycles: %d, vcounter: %d, hslot: %d\n", last_frame_num, mclks, gen->frame_end, v_context->cycles, v_context->vcounter, v_context->hslot); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
387 last_frame_num = v_context->frame; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
388 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
389 if(exit_after){ |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
390 --exit_after; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
391 if (!exit_after) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
392 exit(0); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
393 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
394 } |
1170
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
395 if (context->current_cycle > MAX_NO_ADJUST) { |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
396 uint32_t deduction = mclks - ADJUST_BUFFER; |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
397 vdp_adjust_cycles(v_context, deduction); |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
398 io_adjust_cycles(gen->io.ports, context->current_cycle, deduction); |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
399 io_adjust_cycles(gen->io.ports+1, context->current_cycle, deduction); |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
400 io_adjust_cycles(gen->io.ports+2, context->current_cycle, deduction); |
1610 | 401 if (gen->mapper_type == MAPPER_JCART) { |
402 jcart_adjust_cycles(gen, deduction); | |
403 } | |
1170
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
404 context->current_cycle -= deduction; |
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
405 z80_adjust_cycles(z_context, deduction); |
1902
32a3aa7b4a45
Fix YM2612 busy flag timing
Michael Pavone <pavone@retrodev.com>
parents:
1901
diff
changeset
|
406 ym_adjust_cycles(gen->ym, deduction); |
1170
9170fc4d9835
Don't adjust cycles every frame. Only when we start getting close to UINT_MAX. Don't adjust all the way down to zero when we do adjust. Shouldn't fix anything, but may make debugging current issues easier.
Michael Pavone <pavone@retrodev.com>
parents:
1165
diff
changeset
|
407 gen->psg->cycles -= deduction; |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
408 if (gen->reset_cycle != CYCLE_NEVER) { |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
409 gen->reset_cycle -= deduction; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
410 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
411 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
412 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
413 gen->frame_end = vdp_cycles_to_frame_end(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
414 context->sync_cycle = gen->frame_end; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
415 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
416 if (context->int_ack) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
417 //printf("acknowledging %d @ %d:%d, vcounter: %d, hslot: %d\n", context->int_ack, context->current_cycle, v_context->cycles, v_context->vcounter, v_context->hslot); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
418 vdp_int_ack(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
419 context->int_ack = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
420 } |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
421 if (!address && (gen->header.enter_debugger || gen->header.save_state)) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
422 context->sync_cycle = context->current_cycle + 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
423 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
424 adjust_int_cycle(context, v_context); |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
425 if (gen->reset_cycle < context->target_cycle) { |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
426 context->target_cycle = gen->reset_cycle; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
427 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
428 if (address) { |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
429 if (gen->header.enter_debugger) { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
430 gen->header.enter_debugger = 0; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
431 debugger(context, address); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
432 } |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
433 #ifdef NEW_CORE |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
434 if (gen->header.save_state) { |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
435 #else |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
436 if (gen->header.save_state && (z_context->pc || !z_context->native_pc || z_context->reset || !z_context->busreq)) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
437 #endif |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
438 uint8_t slot = gen->header.save_state - 1; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
439 gen->header.save_state = 0; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
440 #ifndef NEW_CORE |
1440
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
441 if (z_context->native_pc && !z_context->reset) { |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
442 //advance Z80 core to the start of an instruction |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
443 while (!z_context->pc) |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
444 { |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
445 sync_z80(z_context, z_context->current_cycle + MCLKS_PER_Z80); |
7d4483944d4d
Allow actually saving a save state in more Z80 states. Save busreq/reset state in bus arbiter section for "native" save states
Michael Pavone <pavone@retrodev.com>
parents:
1433
diff
changeset
|
446 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
447 } |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
448 #endif |
1690
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
449 char *save_path = slot == SERIALIZE_SLOT ? NULL : get_slot_name(&gen->header, slot, use_native_states ? "state" : "gst"); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
450 if (use_native_states || slot == SERIALIZE_SLOT) { |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
451 serialize_buffer state; |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
452 init_serialize(&state); |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
453 genesis_serialize(gen, &state, address); |
1690
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
454 if (slot == SERIALIZE_SLOT) { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
455 gen->serialize_tmp = state.data; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
456 gen->serialize_size = state.size; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
457 context->sync_cycle = context->current_cycle; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
458 context->should_return = 1; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
459 } else { |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
460 save_to_file(&state, save_path); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
461 free(state.data); |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
462 } |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
463 } else { |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
464 save_gst(gen, save_path, address); |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
465 } |
1849
6b5147f08846
Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents:
1848
diff
changeset
|
466 if (slot != SERIALIZE_SLOT) { |
6b5147f08846
Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents:
1848
diff
changeset
|
467 debug_message("Saved state to %s\n", save_path); |
6b5147f08846
Don't print out a message when saving a state to the serialization pseudo-slot
Michael Pavone <pavone@retrodev.com>
parents:
1848
diff
changeset
|
468 } |
1478
da1dce39e846
Refactored save slot related logic to reduce duplication and allow reuse in new UI. Get state loading/saving mostly working in new UI
Michael Pavone <pavone@retrodev.com>
parents:
1471
diff
changeset
|
469 free(save_path); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
470 } else if(gen->header.save_state) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
471 context->sync_cycle = context->current_cycle + 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
472 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
473 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
474 #ifdef REFRESH_EMULATION |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
475 last_sync_cycle = context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
476 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
477 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
478 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
479 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
480 static m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
481 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
482 if (vdp_port & 0x2700E0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
483 fatal_error("machine freeze due to write to address %X\n", 0xC00000 | vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
484 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
485 vdp_port &= 0x1F; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
486 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
487 #ifdef REFRESH_EMULATION |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
488 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
489 refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - last_sync_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
490 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL)); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
491 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
492 last_sync_cycle = context->current_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
493 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
494 sync_components(context, 0); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
495 genesis_context * gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
496 vdp_context *v_context = gen->vdp; |
1374
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
497 uint32_t before_cycle = v_context->cycles; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
498 if (vdp_port < 0x10) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
499 int blocked; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
500 if (vdp_port < 4) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
501 while (vdp_data_port_write(v_context, value) < 0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
502 while(v_context->flags & FLAG_DMA_RUN) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
503 vdp_run_dma_done(v_context, gen->frame_end); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
504 if (v_context->cycles >= gen->frame_end) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
505 uint32_t cycle_diff = v_context->cycles - context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
506 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
507 if (m68k_cycle_diff < cycle_diff) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
508 m68k_cycle_diff += MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
509 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
510 context->current_cycle += m68k_cycle_diff; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
511 gen->bus_busy = 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
512 sync_components(context, 0); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
513 gen->bus_busy = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
514 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
515 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
516 //context->current_cycle = v_context->cycles; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
517 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
518 } else if(vdp_port < 8) { |
1371
5b20840711c1
Remove HINT_FUDGE and make a small adjustment to how VDP syncs with rest of system instead. Worse results on CRAM dot issue, but much less of a hack
Michael Pavone <pavone@retrodev.com>
parents:
1364
diff
changeset
|
519 vdp_run_context_full(v_context, context->current_cycle); |
1373
7cfc9d532e34
Fixed regression from VDP sync changes. Direct color DMA demos are now achieving stable sync again
Michael Pavone <pavone@retrodev.com>
parents:
1372
diff
changeset
|
520 before_cycle = v_context->cycles; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
521 blocked = vdp_control_port_write(v_context, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
522 if (blocked) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
523 while (blocked) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
524 while(v_context->flags & FLAG_DMA_RUN) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
525 vdp_run_dma_done(v_context, gen->frame_end); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
526 if (v_context->cycles >= gen->frame_end) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
527 uint32_t cycle_diff = v_context->cycles - context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
528 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
529 if (m68k_cycle_diff < cycle_diff) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
530 m68k_cycle_diff += MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
531 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
532 context->current_cycle += m68k_cycle_diff; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
533 gen->bus_busy = 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
534 sync_components(context, 0); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
535 gen->bus_busy = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
536 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
537 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
538 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
539 if (blocked < 0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
540 blocked = vdp_control_port_write(v_context, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
541 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
542 blocked = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
543 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
544 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
545 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
546 context->sync_cycle = gen->frame_end = vdp_cycles_to_frame_end(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
547 //printf("Set sync cycle to: %d @ %d, vcounter: %d, hslot: %d\n", context->sync_cycle, context->current_cycle, v_context->vcounter, v_context->hslot); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
548 adjust_int_cycle(context, v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
549 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
550 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
551 fatal_error("Illegal write to HV Counter port %X\n", vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
552 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
553 if (v_context->cycles != before_cycle) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
554 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for write\n", v_context->cycles - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
555 uint32_t cycle_diff = v_context->cycles - context->current_cycle; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
556 uint32_t m68k_cycle_diff = (cycle_diff / MCLKS_PER_68K) * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
557 if (m68k_cycle_diff < cycle_diff) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
558 m68k_cycle_diff += MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
559 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
560 context->current_cycle += m68k_cycle_diff; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
561 //Lock the Z80 out of the bus until the VDP access is complete |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
562 gen->bus_busy = 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
563 sync_z80(gen->z80, v_context->cycles); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
564 gen->bus_busy = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
565 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
566 } else if (vdp_port < 0x18) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
567 psg_write(gen->psg, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
568 } else { |
1318
bfdd450e7dea
Initial work on handling the 128KB VRAM mode bit and some basic prep work for VDP test register support
Michael Pavone <pavone@retrodev.com>
parents:
1316
diff
changeset
|
569 vdp_test_port_write(gen->vdp, value); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
570 } |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
571 #ifdef REFRESH_EMULATION |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
572 last_sync_cycle -= 4; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
573 //refresh may have happened while we were waiting on the VDP, |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
574 //so advance refresh_counter but don't add any delays |
1374
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
575 if (vdp_port >= 4 && vdp_port < 8 && v_context->cycles != before_cycle) { |
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
576 refresh_counter = 0; |
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
577 } else { |
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
578 refresh_counter += (context->current_cycle - last_sync_cycle); |
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
579 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL); |
8f404b1fa572
Go back to resetting the refresh counter after a DMA. Probably not quite correct as it is probably reset on VDP triggered refresh, but this is close enough for now given the general limitations with my refresh code. VDP FIFO Testing seems to be passing 100% reliably again (was occassionally failing still with the last commit)
Michael Pavone <pavone@retrodev.com>
parents:
1373
diff
changeset
|
580 } |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
581 last_sync_cycle = context->current_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
582 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
583 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
584 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
585 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
586 static m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
587 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
588 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value | value << 8 : ((vdp_port & 1) ? value : 0)); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
589 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
590 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
591 static void * z80_vdp_port_write(uint32_t vdp_port, void * vcontext, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
592 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
593 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
594 genesis_context * gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
595 vdp_port &= 0xFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
596 if (vdp_port & 0xE0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
597 fatal_error("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
598 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
599 if (vdp_port < 0x10) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
600 //These probably won't currently interact well with the 68K accessing the VDP |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
601 if (vdp_port < 4) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
602 vdp_run_context(gen->vdp, context->Z80_CYCLE); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
603 vdp_data_port_write(gen->vdp, value << 8 | value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
604 } else if (vdp_port < 8) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
605 vdp_run_context_full(gen->vdp, context->Z80_CYCLE); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
606 vdp_control_port_write(gen->vdp, value << 8 | value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
607 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
608 fatal_error("Illegal write to HV Counter port %X\n", vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
609 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
610 } else if (vdp_port < 0x18) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
611 sync_sound(gen, context->Z80_CYCLE); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
612 psg_write(gen->psg, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
613 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
614 vdp_test_port_write(gen->vdp, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
615 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
616 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
617 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
618 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
619 static uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
620 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
621 if (vdp_port & 0x2700E0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
622 fatal_error("machine freeze due to read from address %X\n", 0xC00000 | vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
623 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
624 vdp_port &= 0x1F; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
625 uint16_t value; |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
626 #ifdef REFRESH_EMULATION |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
627 //do refresh check here so we can avoid adding a penalty for a refresh that happens during a VDP access |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
628 refresh_counter += context->current_cycle - 4*MCLKS_PER_68K - last_sync_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
629 context->current_cycle += REFRESH_DELAY * MCLKS_PER_68K * (refresh_counter / (MCLKS_PER_68K * REFRESH_INTERVAL)); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
630 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
631 last_sync_cycle = context->current_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
632 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
633 genesis_context *gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
634 vdp_context * v_context = gen->vdp; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
635 if (vdp_port < 0x10) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
636 if (vdp_port < 4) { |
1876
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
637 sync_components(context, 0); |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
638 uint32_t before_cycle = v_context->cycles; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
639 value = vdp_data_port_read(v_context); |
1876
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
640 if (v_context->cycles != before_cycle) { |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
641 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for read\n", v_context->cycles - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle); |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
642 context->current_cycle = v_context->cycles; |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
643 //Lock the Z80 out of the bus until the VDP access is complete |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
644 genesis_context *gen = context->system; |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
645 gen->bus_busy = 1; |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
646 sync_z80(gen->z80, v_context->cycles); |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
647 gen->bus_busy = 0; |
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
648 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
649 } else if(vdp_port < 8) { |
1876
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
650 vdp_run_context(v_context, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
651 value = vdp_control_port_read(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
652 } else { |
1876
96971b673f51
Only do full sync on VDP data port reads instead of all VDP port reads, provides a perf bump for games that busy wait on the status or HV registers
Michael Pavone <pavone@retrodev.com>
parents:
1869
diff
changeset
|
653 vdp_run_context(v_context, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
654 value = vdp_hv_counter_read(v_context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
655 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
656 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
657 } else if (vdp_port < 0x18){ |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
658 fatal_error("Illegal read from PSG port %X\n", vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
659 } else { |
1869
dc94354eab66
Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents:
1849
diff
changeset
|
660 value = get_open_bus_value(&gen->header); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
661 } |
1372
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
662 #ifdef REFRESH_EMULATION |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
663 last_sync_cycle -= 4; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
664 //refresh may have happened while we were waiting on the VDP, |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
665 //so advance refresh_counter but don't add any delays |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
666 refresh_counter += (context->current_cycle - last_sync_cycle); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
667 refresh_counter = refresh_counter % (MCLKS_PER_68K * REFRESH_INTERVAL); |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
668 last_sync_cycle = context->current_cycle; |
d78ef6f4fba2
Attempt at improving refresh emulation
Michael Pavone <pavone@retrodev.com>
parents:
1371
diff
changeset
|
669 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
670 return value; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
671 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
672 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
673 static uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
674 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
675 uint16_t value = vdp_port_read(vdp_port, context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
676 if (vdp_port & 1) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
677 return value; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
678 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
679 return value >> 8; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
680 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
681 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
682 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
683 static uint8_t z80_vdp_port_read(uint32_t vdp_port, void * vcontext) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
684 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
685 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
686 if (vdp_port & 0xE0) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
687 fatal_error("machine freeze due to read from Z80 address %X\n", 0x7F00 | vdp_port); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
688 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
689 genesis_context * gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
690 //VDP access goes over the 68K bus like a bank area access |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
691 //typical delay from bus arbitration |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
692 context->Z80_CYCLE += 3 * MCLKS_PER_Z80; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
693 //TODO: add cycle for an access right after a previous one |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
694 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
695 // Needs a new logic analyzer capture to get the actual delay on the 68K side |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
696 gen->m68k->current_cycle += 8 * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
697 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
698 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
699 vdp_port &= 0x1F; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
700 uint16_t ret; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
701 if (vdp_port < 0x10) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
702 //These probably won't currently interact well with the 68K accessing the VDP |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
703 vdp_run_context(gen->vdp, context->Z80_CYCLE); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
704 if (vdp_port < 4) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
705 ret = vdp_data_port_read(gen->vdp); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
706 } else if (vdp_port < 8) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
707 ret = vdp_control_port_read(gen->vdp); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
708 } else { |
1316
3185438e0134
Fix copy pasta error in handling of Z80 VDP port reads. HV counter reads are not illegal writes =P. Fixes immediate exit in Overdrive II, though other problems remain
Michael Pavone <pavone@retrodev.com>
parents:
1309
diff
changeset
|
709 ret = vdp_hv_counter_read(gen->vdp); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
710 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
711 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
712 //TODO: Figure out the correct value today |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
713 ret = 0xFFFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
714 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
715 return vdp_port & 1 ? ret : ret >> 8; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
716 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
717 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
718 //TODO: Move this inside the system context |
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
719 static uint32_t zram_counter = 0; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
720 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
721 static m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
722 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
723 genesis_context * gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
724 if (location < 0x10000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
725 //Access to Z80 memory incurs a one 68K cycle wait state |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
726 context->current_cycle += MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
727 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
728 location &= 0x7FFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
729 if (location < 0x4000) { |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
730 gen->zram[location & 0x1FFF] = value; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
731 #ifndef NO_Z80 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
732 z80_handle_code_write(location & 0x1FFF, gen->z80); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
733 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
734 } else if (location < 0x6000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
735 sync_sound(gen, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
736 if (location & 1) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
737 ym_data_write(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
738 } else if(location & 2) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
739 ym_address_write_part2(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
740 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
741 ym_address_write_part1(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
742 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
743 } else if (location == 0x6000) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
744 gen->z80_bank_reg = (gen->z80_bank_reg >> 1 | value << 8) & 0x1FF; |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
745 if (gen->z80_bank_reg < 0x80) { |
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
746 gen->z80->mem_pointers[1] = (gen->z80_bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
747 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
748 gen->z80->mem_pointers[1] = NULL; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
749 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
750 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
751 fatal_error("68K write to unhandled Z80 address %X\n", location); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
752 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
753 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
754 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
755 if (location < 0x10100) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
756 switch(location >> 1 & 0xFF) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
757 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
758 case 0x1: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
759 io_data_write(gen->io.ports, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
760 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
761 case 0x2: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
762 io_data_write(gen->io.ports+1, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
763 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
764 case 0x3: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
765 io_data_write(gen->io.ports+2, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
766 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
767 case 0x4: |
1348
040c5600e2d9
Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents:
1333
diff
changeset
|
768 io_control_write(gen->io.ports, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
769 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
770 case 0x5: |
1348
040c5600e2d9
Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents:
1333
diff
changeset
|
771 io_control_write(gen->io.ports+1, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
772 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
773 case 0x6: |
1348
040c5600e2d9
Implemented slow rise time of IO pins set as inputs, but not driven by device. Fixes input in Decap Attack and possibly other games with buggy controller code
Michael Pavone <pavone@retrodev.com>
parents:
1333
diff
changeset
|
774 io_control_write(gen->io.ports+2, value, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
775 break; |
1215
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
776 case 0x7: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
777 gen->io.ports[0].serial_out = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
778 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
779 case 0x8: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
780 case 0xB: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
781 case 0xE: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
782 //serial input port is not writeable |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
783 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
784 case 0x9: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
785 gen->io.ports[0].serial_ctrl = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
786 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
787 case 0xA: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
788 gen->io.ports[1].serial_out = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
789 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
790 case 0xC: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
791 gen->io.ports[1].serial_ctrl = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
792 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
793 case 0xD: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
794 gen->io.ports[2].serial_out = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
795 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
796 case 0xF: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
797 gen->io.ports[2].serial_ctrl = value; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
798 break; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
799 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
800 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
801 uint32_t masked = location & 0xFFF00; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
802 if (masked == 0x11100) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
803 if (value & 1) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
804 dputs("bus requesting Z80"); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
805 if (z80_enabled) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
806 z80_assert_busreq(gen->z80, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
807 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
808 gen->z80->busack = 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
809 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
810 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
811 if (gen->z80->busreq) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
812 dputs("releasing z80 bus"); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
813 #ifdef DO_DEBUG_PRINT |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
814 char fname[20]; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
815 sprintf(fname, "zram-%d", zram_counter++); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
816 FILE * f = fopen(fname, "wb"); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
817 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
818 fclose(f); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
819 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
820 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
821 if (z80_enabled) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
822 z80_clear_busreq(gen->z80, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
823 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
824 gen->z80->busack = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
825 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
826 } |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
827 } else if (masked == 0x11200) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
828 sync_z80(gen->z80, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
829 if (value & 1) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
830 if (z80_enabled) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
831 z80_clear_reset(gen->z80, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
832 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
833 gen->z80->reset = 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
834 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
835 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
836 if (z80_enabled) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
837 z80_assert_reset(gen->z80, context->current_cycle); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
838 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
839 gen->z80->reset = 1; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
840 } |
1308
1b3fe6e03e7b
Reset YM2612 whenver the Z80 is reset. Fixes issue with stuck notes in Fantastic Dizzy and Kid Chameleon
Michael Pavone <pavone@retrodev.com>
parents:
1304
diff
changeset
|
841 ym_reset(gen->ym); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
842 } |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
843 } else if (masked != 0x11300 && masked != 0x11000) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
844 fatal_error("Machine freeze due to unmapped write to address %X\n", location | 0xA00000); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
845 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
846 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
847 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
848 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
849 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
850 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
851 static m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
852 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
853 if (location < 0x10000 || (location & 0x1FFF) >= 0x100) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
854 return io_write(location, context, value >> 8); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
855 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
856 return io_write(location, context, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
857 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
858 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
859 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
860 #define FOREIGN 0x80 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
861 #define HZ50 0x40 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
862 #define USA FOREIGN |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
863 #define JAP 0x00 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
864 #define EUR (HZ50|FOREIGN) |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
865 #define NO_DISK 0x20 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
866 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
867 static uint8_t io_read(uint32_t location, m68k_context * context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
868 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
869 uint8_t value; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
870 genesis_context *gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
871 if (location < 0x10000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
872 //Access to Z80 memory incurs a one 68K cycle wait state |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
873 context->current_cycle += MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
874 if (!z80_enabled || z80_get_busack(gen->z80, context->current_cycle)) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
875 location &= 0x7FFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
876 if (location < 0x4000) { |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
877 value = gen->zram[location & 0x1FFF]; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
878 } else if (location < 0x6000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
879 sync_sound(gen, context->current_cycle); |
1904
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
880 value = ym_read_status(gen->ym, context->current_cycle, location); |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
881 } else if (location < 0x7F00) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
882 value = 0xFF; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
883 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
884 fatal_error("Machine freeze due to read of Z80 VDP memory window by 68K: %X\n", location | 0xA00000); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
885 value = 0xFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
886 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
887 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
888 value = 0xFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
889 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
890 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
891 if (location < 0x10100) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
892 switch(location >> 1 & 0xFF) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
893 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
894 case 0x0: |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
895 //version bits should be 0 for now since we're not emulating TMSS |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
896 value = gen->version_reg; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
897 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
898 case 0x1: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
899 value = io_data_read(gen->io.ports, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
900 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
901 case 0x2: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
902 value = io_data_read(gen->io.ports+1, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
903 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
904 case 0x3: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
905 value = io_data_read(gen->io.ports+2, context->current_cycle); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
906 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
907 case 0x4: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
908 value = gen->io.ports[0].control; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
909 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
910 case 0x5: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
911 value = gen->io.ports[1].control; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
912 break; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
913 case 0x6: |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
914 value = gen->io.ports[2].control; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
915 break; |
1215
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
916 case 0x7: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
917 value = gen->io.ports[0].serial_out; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
918 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
919 case 0x8: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
920 value = gen->io.ports[0].serial_in; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
921 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
922 case 0x9: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
923 value = gen->io.ports[0].serial_ctrl; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
924 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
925 case 0xA: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
926 value = gen->io.ports[1].serial_out; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
927 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
928 case 0xB: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
929 value = gen->io.ports[1].serial_in; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
930 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
931 case 0xC: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
932 value = gen->io.ports[1].serial_ctrl; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
933 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
934 case 0xD: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
935 value = gen->io.ports[2].serial_out; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
936 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
937 case 0xE: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
938 value = gen->io.ports[2].serial_in; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
939 break; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
940 case 0xF: |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
941 value = gen->io.ports[2].serial_ctrl; |
cf69a179aeaf
Basic implementation of serial IO registers, but without actual serial IO support. Needed to run a certain software check cartridge that is floating around.
Michael Pavone <pavone@retrodev.com>
parents:
1208
diff
changeset
|
942 break; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
943 default: |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
944 value = get_open_bus_value(&gen->header) >> 8; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
945 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
946 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
947 uint32_t masked = location & 0xFFF00; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
948 if (masked == 0x11100) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
949 value = z80_enabled ? !z80_get_busack(gen->z80, context->current_cycle) : !gen->z80->busack; |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
950 value |= (get_open_bus_value(&gen->header) >> 8) & 0xFE; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
951 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d)\n", value, context->current_cycle, gen->z80->reset); |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
952 } else if (masked == 0x11200) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
953 value = !gen->z80->reset; |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
954 } else if (masked == 0x11300 || masked == 0x11000) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
955 //A11300 is apparently completely unused |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
956 //A11000 is the memory control register which I am assuming is write only |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
957 value = get_open_bus_value(&gen->header) >> 8; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
958 } else { |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
959 location |= 0xA00000; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
960 fatal_error("Machine freeze due to read of unmapped IO location %X\n", location); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
961 value = 0xFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
962 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
963 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
964 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
965 return value; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
966 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
967 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
968 static uint16_t io_read_w(uint32_t location, m68k_context * context) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
969 { |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
970 genesis_context *gen = context->system; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
971 uint16_t value = io_read(location, context); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
972 if (location < 0x10000 || (location & 0x1FFF) < 0x100) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
973 value = value | (value << 8); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
974 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
975 value <<= 8; |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
976 value |= get_open_bus_value(&gen->header) & 0xFF; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
977 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
978 return value; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
979 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
980 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
981 static void * z80_write_ym(uint32_t location, void * vcontext, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
982 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
983 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
984 genesis_context * gen = context->system; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
985 sync_sound(gen, context->Z80_CYCLE); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
986 if (location & 1) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
987 ym_data_write(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
988 } else if (location & 2) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
989 ym_address_write_part2(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
990 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
991 ym_address_write_part1(gen->ym, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
992 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
993 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
994 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
995 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
996 static uint8_t z80_read_ym(uint32_t location, void * vcontext) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
997 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
998 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
999 genesis_context * gen = context->system; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1000 sync_sound(gen, context->Z80_CYCLE); |
1904
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
1001 return ym_read_status(gen->ym, context->Z80_CYCLE, location); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1002 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1003 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1004 static uint8_t z80_read_bank(uint32_t location, void * vcontext) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1005 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1006 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1007 genesis_context *gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1008 if (gen->bus_busy) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1009 context->Z80_CYCLE = gen->m68k->current_cycle; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1010 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1011 //typical delay from bus arbitration |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1012 context->Z80_CYCLE += 3 * MCLKS_PER_Z80; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1013 //TODO: add cycle for an access right after a previous one |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1014 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1015 // Needs a new logic analyzer capture to get the actual delay on the 68K side |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1016 gen->m68k->current_cycle += 8 * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1017 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1018 location &= 0x7FFF; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1019 if (context->mem_pointers[1]) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1020 return context->mem_pointers[1][location ^ 1]; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1021 } |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1022 uint32_t address = gen->z80_bank_reg << 15 | location; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1023 if (address >= 0xC00000 && address < 0xE00000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1024 return z80_vdp_port_read(location & 0xFF, context); |
1869
dc94354eab66
Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents:
1849
diff
changeset
|
1025 } else if (address >= 0xA10000 && address <= 0xA10001) { |
dc94354eab66
Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents:
1849
diff
changeset
|
1026 //Apparently version reg can be read through Z80 banked area |
dc94354eab66
Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents:
1849
diff
changeset
|
1027 //TODO: Check rest of IO region addresses |
dc94354eab66
Fix accuracy bugs used by Novedicus to detect BlastEm/Exodus
Michael Pavone <pavone@retrodev.com>
parents:
1849
diff
changeset
|
1028 return gen->version_reg; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1029 } else { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1030 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area (%X)\n", address, gen->z80_bank_reg << 15); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1031 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1032 return 0; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1033 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1034 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1035 static void *z80_write_bank(uint32_t location, void * vcontext, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1036 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1037 z80_context * context = vcontext; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1038 genesis_context *gen = context->system; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1039 if (gen->bus_busy) { |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1040 context->Z80_CYCLE = gen->m68k->current_cycle; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1041 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1042 //typical delay from bus arbitration |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1043 context->Z80_CYCLE += 3 * MCLKS_PER_Z80; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1044 //TODO: add cycle for an access right after a previous one |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1045 //TODO: Below cycle time is an estimate based on the time between 68K !BG goes low and Z80 !MREQ goes high |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1046 // Needs a new logic analyzer capture to get the actual delay on the 68K side |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1047 gen->m68k->current_cycle += 8 * MCLKS_PER_68K; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1048 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1049 location &= 0x7FFF; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1050 uint32_t address = gen->z80_bank_reg << 15 | location; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1051 if (address >= 0xE00000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1052 address &= 0xFFFF; |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
1053 ((uint8_t *)gen->work_ram)[address ^ 1] = value; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1054 } else if (address >= 0xC00000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1055 z80_vdp_port_write(location & 0xFF, context, value); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1056 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1057 fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1058 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1059 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1060 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1061 |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1062 static void *z80_write_bank_reg(uint32_t location, void * vcontext, uint8_t value) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1063 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1064 z80_context * context = vcontext; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1065 genesis_context *gen = context->system; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1066 |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1067 gen->z80_bank_reg = (gen->z80_bank_reg >> 1 | value << 8) & 0x1FF; |
1445
349d50930c03
Save and restore Z80 bank register in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1444
diff
changeset
|
1068 update_z80_bank_pointer(context->system); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1069 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1070 return context; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1071 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1072 |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1073 static uint16_t unused_read(uint32_t location, void *vcontext) |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1074 { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1075 m68k_context *context = vcontext; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1076 genesis_context *gen = context->system; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1077 if ((location >= 0xA13000 && location < 0xA13100) || (location >= 0xA12000 && location < 0xA12100)) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1078 //Only called if the cart/exp doesn't have a more specific handler for this region |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1079 return get_open_bus_value(&gen->header); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1080 } else if (location == 0xA14000 || location == 0xA14002) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1081 if (gen->version_reg & 0xF) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1082 return gen->tmss_lock[location >> 1 & 1]; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1083 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1084 fatal_error("Machine freeze due to read from TMSS lock when TMSS is not present %X\n", location); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1085 return 0xFFFF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1086 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1087 } else if (location == 0xA14100) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1088 if (gen->version_reg & 0xF) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1089 return get_open_bus_value(&gen->header); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1090 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1091 fatal_error("Machine freeze due to read from TMSS control when TMSS is not present %X\n", location); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1092 return 0xFFFF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1093 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1094 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1095 fatal_error("Machine freeze due to unmapped read from %X\n", location); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1096 return 0xFFFF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1097 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1098 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1099 |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1100 static uint8_t unused_read_b(uint32_t location, void *vcontext) |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1101 { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1102 uint16_t v = unused_read(location & 0xFFFFFE, vcontext); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1103 if (location & 1) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1104 return v; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1105 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1106 return v >> 8; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1107 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1108 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1109 |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1110 static void *unused_write(uint32_t location, void *vcontext, uint16_t value) |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1111 { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1112 m68k_context *context = vcontext; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1113 genesis_context *gen = context->system; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1114 uint8_t has_tmss = gen->version_reg & 0xF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1115 if (has_tmss && (location == 0xA14000 || location == 0xA14002)) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1116 gen->tmss_lock[location >> 1 & 1] = value; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1117 } else if (has_tmss && location == 0xA14100) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1118 //TODO: implement TMSS control register |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1119 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1120 fatal_error("Machine freeze due to unmapped write to %X\n", location); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1121 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1122 return vcontext; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1123 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1124 |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1125 static void *unused_write_b(uint32_t location, void *vcontext, uint8_t value) |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1126 { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1127 m68k_context *context = vcontext; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1128 genesis_context *gen = context->system; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1129 uint8_t has_tmss = gen->version_reg & 0xF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1130 if (has_tmss && location >= 0xA14000 && location <= 0xA14003) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1131 uint32_t offset = location >> 1 & 1; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1132 if (location & 1) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1133 gen->tmss_lock[offset] &= 0xFF00; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1134 gen->tmss_lock[offset] |= value; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1135 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1136 gen->tmss_lock[offset] &= 0xFF; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1137 gen->tmss_lock[offset] |= value << 8; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1138 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1139 } else if (has_tmss && (location == 0xA14100 || location == 0xA14101)) { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1140 //TODO: implement TMSS control register |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1141 } else { |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1142 fatal_error("Machine freeze due to unmapped byte write to %X\n", location); |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1143 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1144 return vcontext; |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1145 } |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1146 |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1147 static void set_speed_percent(system_header * system, uint32_t percent) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1148 { |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1149 genesis_context *context = (genesis_context *)system; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1150 uint32_t old_clock = context->master_clock; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1151 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1152 while (context->ym->current_cycle != context->psg->cycles) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1153 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG); |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1154 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1155 ym_adjust_master_clock(context->ym, context->master_clock); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1156 psg_adjust_master_clock(context->psg, context->master_clock); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1157 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1158 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1159 void set_region(genesis_context *gen, rom_info *info, uint8_t region) |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1160 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1161 if (!region) { |
1326
071e761bcdcf
Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents:
1318
diff
changeset
|
1162 char * def_region = tern_find_path_default(config, "system\0default_region\0", (tern_val){.ptrval = "U"}, TVAL_PTR).ptrval; |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1163 if (!info->regions || (info->regions & translate_region_char(toupper(*def_region)))) { |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1164 region = translate_region_char(toupper(*def_region)); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1165 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1166 region = info->regions; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1167 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1168 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1169 if (region & REGION_E) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1170 gen->version_reg = NO_DISK | EUR; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1171 } else if (region & REGION_J) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1172 gen->version_reg = NO_DISK | JAP; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1173 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1174 gen->version_reg = NO_DISK | USA; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1175 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1176 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1177 if (region & HZ50) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1178 gen->normal_clock = MCLKS_PAL; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1179 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1180 gen->normal_clock = MCLKS_NTSC; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1181 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1182 gen->master_clock = gen->normal_clock; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1183 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1184 |
1433
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1185 static uint8_t load_state(system_header *system, uint8_t slot) |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1186 { |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1187 genesis_context *gen = (genesis_context *)system; |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1188 char *statepath = get_slot_name(system, slot, "state"); |
1433
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1189 deserialize_buffer state; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1190 uint32_t pc = 0; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1191 uint8_t ret; |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1192 if (!gen->m68k->resume_pc) { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1193 system->delayed_load_slot = slot + 1; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1194 gen->m68k->should_return = 1; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1195 ret = get_modification_time(statepath) != 0; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1196 if (!ret) { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1197 strcpy(statepath + strlen(statepath)-strlen("state"), "gst"); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1198 ret = get_modification_time(statepath) != 0; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1199 } |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1200 goto done; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1201 } |
1433
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1202 if (load_from_file(&state, statepath)) { |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1203 genesis_deserialize(&state, gen); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1204 free(state.data); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1205 //HACK |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1206 pc = gen->m68k->last_prefetch_address; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1207 ret = 1; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1208 } else { |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1209 strcpy(statepath + strlen(statepath)-strlen("state"), "gst"); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1210 pc = load_gst(gen, statepath); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1211 ret = pc != 0; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1212 } |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1213 if (ret) { |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1214 gen->m68k->resume_pc = get_native_address_trans(gen->m68k, pc); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1215 } |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1216 done: |
1433
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1217 free(statepath); |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1218 return ret; |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1219 } |
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1220 |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1221 static void handle_reset_requests(genesis_context *gen) |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1222 { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1223 while (gen->reset_requested || gen->header.delayed_load_slot) |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1224 { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1225 if (gen->reset_requested) { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1226 gen->reset_requested = 0; |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1227 gen->m68k->should_return = 0; |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1228 z80_assert_reset(gen->z80, gen->m68k->current_cycle); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1229 z80_clear_busreq(gen->z80, gen->m68k->current_cycle); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1230 ym_reset(gen->ym); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1231 //Is there any sort of VDP reset? |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1232 m68k_reset(gen->m68k); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1233 } |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1234 if (gen->header.delayed_load_slot) { |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1235 load_state(&gen->header, gen->header.delayed_load_slot - 1); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1236 gen->header.delayed_load_slot = 0; |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1237 resume_68k(gen->m68k); |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1238 } |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1239 } |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
1240 #ifndef IS_LIB |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1241 bindings_release_capture(); |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1242 vdp_release_framebuffer(gen->vdp); |
1551
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1534
diff
changeset
|
1243 render_pause_source(gen->ym->audio); |
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1534
diff
changeset
|
1244 render_pause_source(gen->psg->audio); |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
1245 #endif |
1479
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1246 } |
a568dca999b2
Fix genesis save state loading via Nuklear UI, sms probably still needs work
Michael Pavone <pavone@retrodev.com>
parents:
1478
diff
changeset
|
1247 |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1248 static void start_genesis(system_header *system, char *statefile) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1249 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1250 genesis_context *gen = (genesis_context *)system; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1251 if (statefile) { |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1252 //first try loading as a native format savestate |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1253 deserialize_buffer state; |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1254 uint32_t pc; |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1255 if (load_from_file(&state, statefile)) { |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
1256 genesis_deserialize(&state, gen); |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1257 free(state.data); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
1258 //HACK |
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
1259 pc = gen->m68k->last_prefetch_address; |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1260 } else { |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1261 pc = load_gst(gen, statefile); |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1262 if (!pc) { |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1263 fatal_error("Failed to load save state %s\n", statefile); |
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1264 } |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1265 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1266 printf("Loaded %s\n", statefile); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1267 if (gen->header.enter_debugger) { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1268 gen->header.enter_debugger = 0; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1269 insert_breakpoint(gen->m68k, pc, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1270 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1271 adjust_int_cycle(gen->m68k, gen->vdp); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1272 start_68k_context(gen->m68k, pc); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1273 } else { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1274 if (gen->header.enter_debugger) { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1275 gen->header.enter_debugger = 0; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1276 uint32_t address = gen->cart[2] << 16 | gen->cart[3]; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1277 insert_breakpoint(gen->m68k, address, gen->header.debugger_type == DEBUGGER_NATIVE ? debugger : gdb_debug_enter); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1278 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1279 m68k_reset(gen->m68k); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1280 } |
1208
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1281 handle_reset_requests(gen); |
1427
4e5797b3935a
WIP - New savestate format
Michael Pavone <pavone@retrodev.com>
parents:
1420
diff
changeset
|
1282 return; |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1283 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1284 |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1285 static void resume_genesis(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1286 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1287 genesis_context *gen = (genesis_context *)system; |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
1288 #ifndef IS_LIB |
1184
b1147418254a
Overscan is now configurable
Michael Pavone <pavone@retrodev.com>
parents:
1170
diff
changeset
|
1289 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC); |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1290 bindings_reacquire_capture(); |
1401
b56c8c51ca5d
Properly release and reacquire framebuffer pointer when switching contexts. Hopefully fixes the LOCKRECT issue some people are seeing with the SDL 2 fallback renderer
Michael Pavone <pavone@retrodev.com>
parents:
1395
diff
changeset
|
1291 vdp_reacquire_framebuffer(gen->vdp); |
1551
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1534
diff
changeset
|
1292 render_resume_source(gen->ym->audio); |
ce1f93be0104
Small cleanup to audio interface between emulation code and renderer backend
Michael Pavone <pavone@retrodev.com>
parents:
1534
diff
changeset
|
1293 render_resume_source(gen->psg->audio); |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
1294 #endif |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1295 resume_68k(gen->m68k); |
1208
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1296 handle_reset_requests(gen); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1297 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1298 |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1299 static void inc_debug_mode(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1300 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1301 genesis_context *gen = (genesis_context *)system; |
1631
c4ba3177b72d
WIP new VDP plane debug view and support for detached VDP debug views generally
Michael Pavone <pavone@retrodev.com>
parents:
1610
diff
changeset
|
1302 vdp_inc_debug_mode(gen->vdp); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1303 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1304 |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1305 static void request_exit(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1306 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1307 genesis_context *gen = (genesis_context *)system; |
1688
395f684c5379
Fixed the most glaring issues in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1643
diff
changeset
|
1308 gen->m68k->target_cycle = gen->m68k->current_cycle; |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1309 gen->m68k->should_return = 1; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1310 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1311 |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1312 static void persist_save(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1313 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1314 genesis_context *gen = (genesis_context *)system; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1315 if (gen->save_type == SAVE_NONE) { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1316 return; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1317 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1318 FILE * f = fopen(save_filename, "wb"); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1319 if (!f) { |
1395
efa7225e0f07
Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents:
1377
diff
changeset
|
1320 fprintf(stderr, "Failed to open %s file %s for writing\n", save_type_name(gen->save_type), save_filename); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1321 return; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1322 } |
1848
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1323 if (gen->save_type == RAM_FLAG_BOTH) { |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1324 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage); |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1325 } |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1326 fwrite(gen->save_storage, 1, gen->save_size, f); |
1848
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1327 if (gen->save_type == RAM_FLAG_BOTH) { |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1328 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage); |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1329 } |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1330 fclose(f); |
1395
efa7225e0f07
Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents:
1377
diff
changeset
|
1331 printf("Saved %s to %s\n", save_type_name(gen->save_type), save_filename); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1332 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1333 |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1334 static void load_save(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1335 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1336 genesis_context *gen = (genesis_context *)system; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1337 FILE * f = fopen(save_filename, "rb"); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1338 if (f) { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1339 uint32_t read = fread(gen->save_storage, 1, gen->save_size, f); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1340 fclose(f); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1341 if (read > 0) { |
1848
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1342 if (gen->save_type == RAM_FLAG_BOTH) { |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1343 byteswap_rom(gen->save_size, (uint16_t *)gen->save_storage); |
ef3d368d59b0
16-bit wide save RAM is stored in memory byteswapped for performance reasons, but saving it to disc that way isn't great. Swap before save/after load to fix
Michael Pavone <pavone@retrodev.com>
parents:
1798
diff
changeset
|
1344 } |
1395
efa7225e0f07
Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents:
1377
diff
changeset
|
1345 printf("Loaded %s from %s\n", save_type_name(gen->save_type), save_filename); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1346 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1347 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1348 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1349 |
1208
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1350 static void soft_reset(system_header *system) |
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1351 { |
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1352 genesis_context *gen = (genesis_context *)system; |
1556
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1353 if (gen->reset_cycle == CYCLE_NEVER) { |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1354 double random = (double)rand()/(double)RAND_MAX; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1355 gen->reset_cycle = gen->m68k->current_cycle + random * MCLKS_LINE * (gen->version_reg & HZ50 ? LINES_PAL : LINES_NTSC); |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1356 if (gen->reset_cycle < gen->m68k->target_cycle) { |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1357 gen->m68k->target_cycle = gen->reset_cycle; |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1358 } |
075df0844baa
Randomize soft reset timing and fix silly bug that was accidentally clearing IO state on soft reset
Michael Pavone <pavone@retrodev.com>
parents:
1555
diff
changeset
|
1359 } |
1208
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1360 } |
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1361 |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1362 static void free_genesis(system_header *system) |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1363 { |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1364 genesis_context *gen = (genesis_context *)system; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1365 vdp_free(gen->vdp); |
1593
24508cb54f87
Fix a number of other memory errors (mostly leaks again) identified by valgrind
Michael Pavone <pavone@retrodev.com>
parents:
1592
diff
changeset
|
1366 memmap_chunk *map = (memmap_chunk *)gen->m68k->options->gen.memmap; |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1367 m68k_options_free(gen->m68k->options); |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1368 free(gen->cart); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1369 free(gen->m68k); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1370 free(gen->work_ram); |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1371 z80_options_free(gen->z80->Z80_OPTS); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1372 free(gen->z80); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1373 free(gen->zram); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1374 ym_free(gen->ym); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1375 psg_free(gen->psg); |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1376 free(gen->header.save_dir); |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1377 free_rom_info(&gen->header.info); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1378 free(gen->lock_on); |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1379 free(gen); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1380 } |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1381 |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1382 static void gamepad_down(system_header *system, uint8_t gamepad_num, uint8_t button) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1383 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1384 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1385 io_gamepad_down(&gen->io, gamepad_num, button); |
1610 | 1386 if (gen->mapper_type == MAPPER_JCART) { |
1387 jcart_gamepad_down(gen, gamepad_num, button); | |
1388 } | |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1389 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1390 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1391 static void gamepad_up(system_header *system, uint8_t gamepad_num, uint8_t button) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1392 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1393 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1394 io_gamepad_up(&gen->io, gamepad_num, button); |
1610 | 1395 if (gen->mapper_type == MAPPER_JCART) { |
1396 jcart_gamepad_up(gen, gamepad_num, button); | |
1397 } | |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1398 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1399 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1400 static void mouse_down(system_header *system, uint8_t mouse_num, uint8_t button) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1401 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1402 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1403 io_mouse_down(&gen->io, mouse_num, button); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1404 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1405 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1406 static void mouse_up(system_header *system, uint8_t mouse_num, uint8_t button) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1407 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1408 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1409 io_mouse_up(&gen->io, mouse_num, button); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1410 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1411 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1412 static void mouse_motion_absolute(system_header *system, uint8_t mouse_num, uint16_t x, uint16_t y) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1413 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1414 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1415 io_mouse_motion_absolute(&gen->io, mouse_num, x, y); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1416 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1417 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1418 static void mouse_motion_relative(system_header *system, uint8_t mouse_num, int32_t x, int32_t y) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1419 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1420 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1421 io_mouse_motion_relative(&gen->io, mouse_num, x, y); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1422 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1423 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1424 static void keyboard_down(system_header *system, uint8_t scancode) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1425 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1426 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1427 io_keyboard_down(&gen->io, scancode); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1428 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1429 |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1430 static void keyboard_up(system_header *system, uint8_t scancode) |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1431 { |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1432 genesis_context *gen = (genesis_context *)system; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1433 io_keyboard_up(&gen->io, scancode); |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1434 } |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1435 |
1798
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1436 static void set_audio_config(genesis_context *gen) |
1796
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1437 { |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1438 char *config_gain; |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1439 config_gain = tern_find_path(config, "audio\0psg_gain\0", TVAL_PTR).ptrval; |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1440 render_audio_source_gaindb(gen->psg->audio, config_gain ? atof(config_gain) : 0.0f); |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1441 config_gain = tern_find_path(config, "audio\0fm_gain\0", TVAL_PTR).ptrval; |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1442 render_audio_source_gaindb(gen->ym->audio, config_gain ? atof(config_gain) : 0.0f); |
1798
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1443 |
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1444 char *config_dac = tern_find_path_default(config, "audio\0fm_dac\0", (tern_val){.ptrval="zero_offset"}, TVAL_PTR).ptrval; |
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1445 ym_enable_zero_offset(gen->ym, !strcmp(config_dac, "zero_offset")); |
1796
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1446 } |
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1447 |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1448 static void config_updated(system_header *system) |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1449 { |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1450 genesis_context *gen = (genesis_context *)system; |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1451 setup_io_devices(config, &system->info, &gen->io); |
1798
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1452 set_audio_config(gen); |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1453 } |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1454 |
1113
45db303fc705
Restore 68K address logging functionality
Michael Pavone <pavone@retrodev.com>
parents:
1111
diff
changeset
|
1455 genesis_context *alloc_init_genesis(rom_info *rom, void *main_rom, void *lock_on, uint32_t system_opts, uint8_t force_region) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1456 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1457 static memmap_chunk z80_map[] = { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1458 { 0x0000, 0x4000, 0x1FFF, 0, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, NULL, NULL, NULL, NULL, NULL }, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1459 { 0x8000, 0x10000, 0x7FFF, 0, 0, 0, NULL, NULL, NULL, z80_read_bank, z80_write_bank}, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1460 { 0x4000, 0x6000, 0x0003, 0, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym}, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1461 { 0x6000, 0x6100, 0xFFFF, 0, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_reg}, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1462 { 0x7F00, 0x8000, 0x00FF, 0, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write} |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1463 }; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1464 genesis_context *gen = calloc(1, sizeof(genesis_context)); |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1465 gen->header.set_speed_percent = set_speed_percent; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1466 gen->header.start_context = start_genesis; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1467 gen->header.resume_context = resume_genesis; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1468 gen->header.load_save = load_save; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1469 gen->header.persist_save = persist_save; |
1433
c886c54d8cf1
Added save states to SMS emulation
Michael Pavone <pavone@retrodev.com>
parents:
1428
diff
changeset
|
1470 gen->header.load_state = load_state; |
1208
95f5253e75c7
Implement soft reset in Genesis mode
Michael Pavone <pavone@retrodev.com>
parents:
1204
diff
changeset
|
1471 gen->header.soft_reset = soft_reset; |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1472 gen->header.free_context = free_genesis; |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
1473 gen->header.get_open_bus_value = get_open_bus_value; |
1111
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1474 gen->header.request_exit = request_exit; |
2eb54e24914e
Mostly working changes to allow support for multiple emulated system types in main blastem program
Michael Pavone <pavone@retrodev.com>
parents:
1108
diff
changeset
|
1475 gen->header.inc_debug_mode = inc_debug_mode; |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1476 gen->header.gamepad_down = gamepad_down; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1477 gen->header.gamepad_up = gamepad_up; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1478 gen->header.mouse_down = mouse_down; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1479 gen->header.mouse_up = mouse_up; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1480 gen->header.mouse_motion_absolute = mouse_motion_absolute; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1481 gen->header.mouse_motion_relative = mouse_motion_relative; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1482 gen->header.keyboard_down = keyboard_down; |
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1483 gen->header.keyboard_up = keyboard_up; |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1484 gen->header.config_updated = config_updated; |
1690
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
1485 gen->header.serialize = serialize; |
319d90025d50
Implement serialization/deserialization in libretro build
Mike Pavone <pavone@retrodev.com>
parents:
1688
diff
changeset
|
1486 gen->header.deserialize = deserialize; |
1377
e587f16e7d3d
Implemented SMS pause button
Michael Pavone <pavone@retrodev.com>
parents:
1374
diff
changeset
|
1487 gen->header.type = SYSTEM_GENESIS; |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1488 gen->header.info = *rom; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1489 set_region(gen, rom, force_region); |
1901
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1490 tern_node *model = get_model(config, SYSTEM_GENESIS); |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1491 uint8_t tmss = !strcmp(tern_find_ptr_default(model, "tmss", "off"), "on"); |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1492 if (tmss) { |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1493 gen->version_reg |= 1; |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1494 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1495 |
1906
2d462aa78349
Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents:
1904
diff
changeset
|
1496 uint8_t max_vsram = !strcmp(tern_find_ptr_default(model, "vsram", "40"), "64"); |
2d462aa78349
Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents:
1904
diff
changeset
|
1497 gen->vdp = init_vdp_context(gen->version_reg & 0x40, max_vsram); |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
1498 gen->vdp->system = &gen->header; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1499 gen->frame_end = vdp_cycles_to_frame_end(gen->vdp); |
1326
071e761bcdcf
Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents:
1318
diff
changeset
|
1500 char * config_cycles = tern_find_path(config, "clocks\0max_cycles\0", TVAL_PTR).ptrval; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1501 gen->max_cycles = config_cycles ? atoi(config_cycles) : DEFAULT_SYNC_INTERVAL; |
1364
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
1502 gen->int_latency_prev1 = MCLKS_PER_68K * 32; |
30123ca5856c
Added some code to try and prevent Z80 accesses and refresh cycles from screwing up interrupt latency more than on hardware
Michael Pavone <pavone@retrodev.com>
parents:
1348
diff
changeset
|
1503 gen->int_latency_prev2 = MCLKS_PER_68K * 16; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1504 |
1565
61fafcbc2c38
Audio DRC now sounds good in both NTSC and PAL, just need to adjust constants to minimize latency without leading to dropouts
Michael Pavone <pavone@retrodev.com>
parents:
1557
diff
changeset
|
1505 render_set_video_standard((gen->version_reg & HZ50) ? VID_PAL : VID_NTSC); |
61fafcbc2c38
Audio DRC now sounds good in both NTSC and PAL, just need to adjust constants to minimize latency without leading to dropouts
Michael Pavone <pavone@retrodev.com>
parents:
1557
diff
changeset
|
1506 |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1507 gen->ym = malloc(sizeof(ym2612_context)); |
1904
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
1508 char *fm = tern_find_ptr_default(model, "fm", "discrete 2612"); |
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
1509 if (!strcmp(fm + strlen(fm) -4, "3834")) { |
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
1510 system_opts |= YM_OPT_3834; |
8312e574100a
Implement selectable YM2612/YM3834 invalid status port behavior
Michael Pavone <pavone@retrodev.com>
parents:
1902
diff
changeset
|
1511 } |
1555
6ce36c3f250b
More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
Michael Pavone <pavone@retrodev.com>
parents:
1551
diff
changeset
|
1512 ym_init(gen->ym, gen->master_clock, MCLKS_PER_YM, system_opts); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1513 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1514 gen->psg = malloc(sizeof(psg_context)); |
1555
6ce36c3f250b
More audio refactoring in preparation for allowing proper sync to video with dynamic audio rate control
Michael Pavone <pavone@retrodev.com>
parents:
1551
diff
changeset
|
1515 psg_init(gen->psg, gen->master_clock, MCLKS_PER_PSG); |
1796
51417bb557b6
Configurable gain for overall output and individual components
Michael Pavone <pavone@retrodev.com>
parents:
1766
diff
changeset
|
1516 |
1798
5278b6e44fc1
Optionally emulate the offset around zero in the imperfect DAC of a discrete YM2612
Michael Pavone <pavone@retrodev.com>
parents:
1796
diff
changeset
|
1517 set_audio_config(gen); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1518 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1519 z80_map[0].buffer = gen->zram = calloc(1, Z80_RAM_BYTES); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1520 #ifndef NO_Z80 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1521 z80_options *z_opts = malloc(sizeof(z80_options)); |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1522 init_z80_opts(z_opts, z80_map, 5, NULL, 0, MCLKS_PER_Z80, 0xFFFF); |
1130
8f14767661fa
Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents:
1117
diff
changeset
|
1523 gen->z80 = init_z80_context(z_opts); |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1524 #ifndef NEW_CORE |
1117
928a65750345
Initial support for Genesis/Megadrive PBC mode. VDP still needs Mode 4 to be useful.
Michael Pavone <pavone@retrodev.com>
parents:
1116
diff
changeset
|
1525 gen->z80->next_int_pulse = z80_next_int_pulse; |
1752
d6d4c006a7b3
Initial attempt at interrupts in new Z80 core and integrating it into main executable
Michael Pavone <pavone@retrodev.com>
parents:
1690
diff
changeset
|
1526 #endif |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1527 z80_assert_reset(gen->z80, 0); |
1130
8f14767661fa
Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents:
1117
diff
changeset
|
1528 #else |
8f14767661fa
Remove memory map assumptions from Z80 core and move a little bit of logic to the generic backend.c so it can be shared between CPU cores
Michael Pavone <pavone@retrodev.com>
parents:
1117
diff
changeset
|
1529 gen->z80 = calloc(1, sizeof(z80_context)); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1530 #endif |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1531 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1532 gen->z80->system = gen; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1533 gen->z80->mem_pointers[0] = gen->zram; |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
1534 gen->z80->mem_pointers[1] = gen->z80->mem_pointers[2] = (uint8_t *)main_rom; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1535 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1536 gen->cart = main_rom; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1537 gen->lock_on = lock_on; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1538 gen->work_ram = calloc(2, RAM_WORDS); |
1326
071e761bcdcf
Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents:
1318
diff
changeset
|
1539 if (!strcmp("random", tern_find_path_default(config, "system\0ram_init\0", (tern_val){.ptrval = "zero"}, TVAL_PTR).ptrval)) |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1540 { |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1541 srand(time(NULL)); |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1542 for (int i = 0; i < RAM_WORDS; i++) |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1543 { |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1544 gen->work_ram[i] = rand(); |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1545 } |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1546 for (int i = 0; i < Z80_RAM_BYTES; i++) |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1547 { |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1548 gen->zram[i] = rand(); |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1549 } |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1550 for (int i = 0; i < VRAM_SIZE; i++) |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1551 { |
1333
69c25e1188e5
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents:
1326
diff
changeset
|
1552 gen->vdp->vdpmem[i] = rand(); |
69c25e1188e5
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents:
1326
diff
changeset
|
1553 } |
69c25e1188e5
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents:
1326
diff
changeset
|
1554 for (int i = 0; i < SAT_CACHE_SIZE; i++) |
69c25e1188e5
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents:
1326
diff
changeset
|
1555 { |
69c25e1188e5
Small tweak to how SAT cache updates are done. Mostly fixes the rotating cube scene in Overdrive 2
Michael Pavone <pavone@retrodev.com>
parents:
1326
diff
changeset
|
1556 gen->vdp->sat_cache[i] = rand(); |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1557 } |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1558 for (int i = 0; i < CRAM_SIZE; i++) |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1559 { |
1428
2540c05520f2
New savestates are working. New config file option for selecting format states will be saved in. Mostly complete, needs a little more work before release
Michael Pavone <pavone@retrodev.com>
parents:
1427
diff
changeset
|
1560 write_cram_internal(gen->vdp, i, rand()); |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1561 } |
1906
2d462aa78349
Make VDP VSRAM capacity respect model selection
Michael Pavone <pavone@retrodev.com>
parents:
1904
diff
changeset
|
1562 for (int i = 0; i < gen->vdp->vsram_size; i++) |
1204
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1563 { |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1564 gen->vdp->vsram[i] = rand(); |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1565 } |
d7be5b6e0a8d
Added config file option to specify that RAM should be randomly initialized. Moved default_region inside a new "system" parent node in config
Michael Pavone <pavone@retrodev.com>
parents:
1188
diff
changeset
|
1566 } |
1116
fe8c79f82c22
More cleanup in preparation for SMS/Mark III support
Michael Pavone <pavone@retrodev.com>
parents:
1113
diff
changeset
|
1567 setup_io_devices(config, rom, &gen->io); |
1583
430dd12e4010
Refactor to split device bindings from IO emulation code
Michael Pavone <pavone@retrodev.com>
parents:
1576
diff
changeset
|
1568 gen->header.has_keyboard = io_has_keyboard(&gen->io); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1569 |
1444
14a2834d010c
Save/restore mapper state in native save states
Michael Pavone <pavone@retrodev.com>
parents:
1440
diff
changeset
|
1570 gen->mapper_type = rom->mapper_type; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1571 gen->save_type = rom->save_type; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1572 if (gen->save_type != SAVE_NONE) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1573 gen->save_ram_mask = rom->save_mask; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1574 gen->save_size = rom->save_size; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1575 gen->save_storage = rom->save_buffer; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1576 gen->eeprom_map = rom->eeprom_map; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1577 gen->num_eeprom = rom->num_eeprom; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1578 if (gen->save_type == SAVE_I2C) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1579 eeprom_init(&gen->eeprom, gen->save_storage, gen->save_size); |
1395
efa7225e0f07
Initial work to support parallel NOR flash and the Magistr 16
Michael Pavone <pavone@retrodev.com>
parents:
1377
diff
changeset
|
1580 } else if (gen->save_type == SAVE_NOR) { |
1519
1f745318f10a
Made the NOR flash emulation a bit more flexible, but not yet flexible enough to properly support the flash chip in the MegaWiFi cart
Michael Pavone <pavone@retrodev.com>
parents:
1471
diff
changeset
|
1581 memcpy(&gen->nor, rom->nor, sizeof(gen->nor)); |
1f745318f10a
Made the NOR flash emulation a bit more flexible, but not yet flexible enough to properly support the flash chip in the MegaWiFi cart
Michael Pavone <pavone@retrodev.com>
parents:
1471
diff
changeset
|
1582 //nor_flash_init(&gen->nor, gen->save_storage, gen->save_size, rom->save_page_size, rom->save_product_id, rom->save_bus); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1583 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1584 } else { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1585 gen->save_storage = NULL; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1586 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1587 |
1165
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1588 //This must happen before we generate memory access functions in init_m68k_opts |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1589 for (int i = 0; i < rom->map_chunks; i++) |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1590 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1591 if (rom->map[i].start == 0xE00000) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1592 rom->map[i].buffer = gen->work_ram; |
1165
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1593 break; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1594 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1595 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1596 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1597 m68k_options *opts = malloc(sizeof(m68k_options)); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1598 init_m68k_opts(opts, rom->map, rom->map_chunks, MCLKS_PER_68K); |
1901
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1599 if (!strcmp(tern_find_ptr_default(model, "tas", "broken"), "broken")) { |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1600 opts->gen.flags |= M68K_OPT_BROKEN_READ_MODIFY; |
5433252329fb
Set version reg and TAS behavior based on model config
Michael Pavone <pavone@retrodev.com>
parents:
1889
diff
changeset
|
1601 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1602 gen->m68k = init_68k_context(opts, NULL); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1603 gen->m68k->system = gen; |
1113
45db303fc705
Restore 68K address logging functionality
Michael Pavone <pavone@retrodev.com>
parents:
1111
diff
changeset
|
1604 opts->address_log = (system_opts & OPT_ADDRESS_LOG) ? fopen("address.log", "w") : NULL; |
1165
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1605 |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1606 //This must happen after the 68K context has been allocated |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1607 for (int i = 0; i < rom->map_chunks; i++) |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1608 { |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1609 if (rom->map[i].flags & MMAP_PTR_IDX) { |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1610 gen->m68k->mem_pointers[rom->map[i].ptr_index] = rom->map[i].buffer; |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1611 } |
9fc680b35dbb
Fix crash regression for games with some kind of mapper functionality
Michael Pavone <pavone@retrodev.com>
parents:
1130
diff
changeset
|
1612 } |
1452
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1613 |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1614 if (gen->mapper_type == MAPPER_SEGA) { |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1615 //initialize bank registers |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1616 for (int i = 1; i < sizeof(gen->bank_regs); i++) |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1617 { |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1618 gen->bank_regs[i] = i; |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1619 } |
f284ad74afe1
Make initial bank register state stored in bank_regs match what is put in to mem_pointers for the sega/SSF2 mapper. Invalidate RAM code ranges on RAM deserialization
Michael Pavone <pavone@retrodev.com>
parents:
1449
diff
changeset
|
1620 } |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1621 |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1622 return gen; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1623 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1624 |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1625 genesis_context *alloc_config_genesis(void *rom, uint32_t rom_size, void *lock_on, uint32_t lock_on_size, uint32_t ym_opts, uint8_t force_region) |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1626 { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1627 static memmap_chunk base_map[] = { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1628 {0xE00000, 0x1000000, 0xFFFF, 0, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, NULL, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1629 NULL, NULL, NULL, NULL}, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1630 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, 0, NULL, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1631 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1632 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b}, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1633 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, 0, NULL, |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1634 (read_16_fun)io_read_w, (write_16_fun)io_write_w, |
1907
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1635 (read_8_fun)io_read, (write_8_fun)io_write}, |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1636 {0x000000, 0xFFFFFF, 0xFFFFFF, 0, 0, 0, NULL, |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1637 (read_16_fun)unused_read, (write_16_fun)unused_write, |
b021ca0bc375
Some partial work on TMSS registers, more accurate open bus locations and implement machine freezes for unmapped areas in the IO region
Michael Pavone <pavone@retrodev.com>
parents:
1906
diff
changeset
|
1638 (read_8_fun)unused_read_b, (write_8_fun)unused_write_b} |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1639 }; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1640 static tern_node *rom_db; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1641 if (!rom_db) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1642 rom_db = load_rom_db(); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1643 } |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1644 rom_info info = configure_rom(rom_db, rom, rom_size, lock_on, lock_on_size, base_map, sizeof(base_map)/sizeof(base_map[0])); |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1645 rom = info.rom; |
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1646 rom_size = info.rom_size; |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
1647 #ifndef BLASTEM_BIG_ENDIAN |
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
1648 byteswap_rom(rom_size, rom); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1649 if (lock_on) { |
1104
4224980a5f84
Fix the previous WIP commit. Quick tests suggests things are no more broken than before now.
Michael Pavone <pavone@retrodev.com>
parents:
1103
diff
changeset
|
1650 byteswap_rom(lock_on_size, lock_on); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1651 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1652 #endif |
1326
071e761bcdcf
Fix a deficiency in the way types were handled in my ternary tree. Fixes in which some paths that were constructed from a template with variables would sometimes get an extra garbage character thrown in
Michael Pavone <pavone@retrodev.com>
parents:
1318
diff
changeset
|
1653 char *m68k_divider = tern_find_path(config, "clocks\0m68k_divider\0", TVAL_PTR).ptrval; |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1654 if (!m68k_divider) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1655 m68k_divider = "7"; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1656 } |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1657 MCLKS_PER_68K = atoi(m68k_divider); |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1658 if (!MCLKS_PER_68K) { |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1659 MCLKS_PER_68K = 7; |
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1660 } |
1595
360d5bab199f
Update controller config when changed in UI without restart
Michael Pavone <pavone@retrodev.com>
parents:
1593
diff
changeset
|
1661 return alloc_init_genesis(&info, rom, lock_on, ym_opts, force_region); |
1103
22e87b739ad6
WIP split of ROM loading/argument parsing from Genesis emulation code. Compiles and doesn't crash, but nothing works. Still a few too many globals as well.
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1662 } |