Mercurial > repos > blastem
annotate blastem.c @ 667:30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
author | Michael Pavone <pavone@retrodev.com> |
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date | Sat, 03 Jan 2015 16:08:23 -0800 |
parents | 01c51f397db2 |
children | 5439ae7946ca |
rev | line source |
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1 /* |
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2 Copyright 2013 Michael Pavone |
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3 This file is part of BlastEm. |
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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. |
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5 */ |
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6 #include "68kinst.h" |
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7 #include "m68k_core.h" |
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8 #include "z80_to_x86.h" |
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9 #include "mem.h" |
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10 #include "vdp.h" |
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11 #include "render.h" |
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12 #include "blastem.h" |
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13 #include "gdb_remote.h" |
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14 #include "gst.h" |
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15 #include "util.h" |
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16 #include <stdio.h> |
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17 #include <stdlib.h> |
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18 #include <string.h> |
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19 |
531 | 20 #define BLASTEM_VERSION "0.2.0" |
464 | 21 |
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22 #define MCLKS_NTSC 53693175 |
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23 #define MCLKS_PAL 53203395 |
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24 |
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25 #define MCLKS_PER_68K 7 |
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26 #define MCLKS_PER_YM MCLKS_PER_68K |
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27 #define MCLKS_PER_Z80 15 |
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28 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) |
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29 |
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30 //TODO: Figure out the exact value for this |
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31 #define LINES_NTSC 262 |
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32 #define LINES_PAL 312 |
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33 |
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34 #define MAX_SOUND_CYCLES 100000 |
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35 |
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36 uint32_t mclk_target = 0; |
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37 |
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38 uint16_t cart[CARTRIDGE_WORDS]; |
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39 uint16_t ram[RAM_WORDS]; |
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40 uint8_t z80_ram[Z80_RAM_BYTES]; |
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41 |
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42 int headless = 0; |
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The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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43 int exit_after = 0; |
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44 int z80_enabled = 1; |
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45 int frame_limit = 0; |
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46 |
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47 tern_node * config; |
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48 |
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49 #ifndef MIN |
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50 #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
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51 #endif |
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52 |
166 | 53 #define SMD_HEADER_SIZE 512 |
54 #define SMD_MAGIC1 0x03 | |
55 #define SMD_MAGIC2 0xAA | |
56 #define SMD_MAGIC3 0xBB | |
57 #define SMD_BLOCK_SIZE 0x4000 | |
58 | |
59 int load_smd_rom(long filesize, FILE * f) | |
60 { | |
61 uint8_t block[SMD_BLOCK_SIZE]; | |
62 filesize -= SMD_HEADER_SIZE; | |
63 fseek(f, SMD_HEADER_SIZE, SEEK_SET); | |
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64 |
166 | 65 uint16_t * dst = cart; |
66 while (filesize > 0) { | |
67 fread(block, 1, SMD_BLOCK_SIZE, f); | |
68 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) { | |
69 *(dst++) = *high << 8 | *low; | |
70 } | |
71 filesize -= SMD_BLOCK_SIZE; | |
72 } | |
73 return 1; | |
74 } | |
75 | |
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76 int load_rom(char * filename) |
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77 { |
166 | 78 uint8_t header[10]; |
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79 FILE * f = fopen(filename, "rb"); |
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80 if (!f) { |
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81 return 0; |
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82 } |
166 | 83 fread(header, 1, sizeof(header), f); |
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84 fseek(f, 0, SEEK_END); |
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85 long filesize = ftell(f); |
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86 if (filesize/2 > CARTRIDGE_WORDS) { |
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87 //carts bigger than 4MB not currently supported |
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88 filesize = CARTRIDGE_WORDS*2; |
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89 } |
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90 fseek(f, 0, SEEK_SET); |
166 | 91 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) { |
92 int i; | |
93 for (i = 3; i < 8; i++) { | |
94 if (header[i] != 0) { | |
95 break; | |
96 } | |
97 } | |
98 if (i == 8) { | |
99 if (header[2]) { | |
100 fprintf(stderr, "%s is a split SMD ROM which is not currently supported", filename); | |
101 exit(1); | |
102 } | |
103 return load_smd_rom(filesize, f); | |
104 } | |
105 } | |
106 fread(cart, 2, filesize/2, f); | |
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107 fclose(f); |
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108 for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur) |
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109 { |
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110 *cur = (*cur >> 8) | (*cur << 8); |
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111 } |
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112 //TODO: Mirror ROM |
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113 return 1; |
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114 } |
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115 |
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116 uint16_t read_dma_value(uint32_t address) |
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117 { |
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118 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do div by 2 |
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119 if (address < 0x200000) { |
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120 return cart[address]; |
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121 } else if(address >= 0x700000) { |
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122 return ram[address & 0x7FFF]; |
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123 } |
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124 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area |
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125 return 0; |
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126 } |
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127 |
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128 void adjust_int_cycle(m68k_context * context, vdp_context * v_context) |
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129 { |
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130 context->int_cycle = CYCLE_NEVER; |
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131 if ((context->status & 0x7) < 6) { |
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132 uint32_t next_vint = vdp_next_vint(v_context); |
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133 if (next_vint != CYCLE_NEVER) { |
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134 context->int_cycle = next_vint; |
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135 context->int_num = 6; |
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136 } |
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137 if ((context->status & 0x7) < 4) { |
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138 uint32_t next_hint = vdp_next_hint(v_context); |
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139 if (next_hint != CYCLE_NEVER) { |
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140 if (next_hint < context->int_cycle) { |
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141 context->int_cycle = next_hint; |
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142 context->int_num = 4; |
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143 |
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144 } |
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145 } |
186
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146 } |
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147 } |
317
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148 |
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149 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle; |
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150 /*printf("Cyc: %d, Trgt: %d, Int Cyc: %d, Int: %d, Mask: %X, V: %d, H: %d, HICount: %d, HReg: %d, Line: %d\n", |
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151 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7), |
317
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152 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);*/ |
186
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153 } |
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154 |
198
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155 int break_on_sync = 0; |
451
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156 int save_state = 0; |
260
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157 |
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158 uint8_t reset = 1; |
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159 uint8_t need_reset = 0; |
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160 uint8_t busreq = 0; |
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161 uint8_t busack = 0; |
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162 uint32_t busack_cycle = CYCLE_NEVER; |
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163 uint8_t new_busack = 0; |
280 | 164 //#define DO_DEBUG_PRINT |
268
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165 #ifdef DO_DEBUG_PRINT |
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166 #define dprintf printf |
271
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167 #define dputs puts |
268
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168 #else |
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169 #define dprintf |
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170 #define dputs |
268
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171 #endif |
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172 |
402
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173 #define Z80_VINT_DURATION 128 |
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174 |
268
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175 void sync_z80(z80_context * z_context, uint32_t mclks) |
88
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176 { |
565
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177 #ifndef NO_Z80 |
265
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178 if (z80_enabled && !reset && !busreq) { |
333 | 179 genesis_context * gen = z_context->system; |
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180 z_context->sync_cycle = mclks; |
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181 if (z_context->current_cycle < z_context->sync_cycle) { |
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182 if (need_reset) { |
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183 z80_reset(z_context); |
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184 need_reset = 0; |
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185 } |
628 | 186 |
505
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187 while (z_context->current_cycle < z_context->sync_cycle) { |
628 | 188 if (z_context->int_pulse_end < z_context->current_cycle || z_context->int_pulse_end == CYCLE_NEVER) { |
667
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189 z_context->int_pulse_start = vdp_next_vint_z80(gen->vdp); |
628 | 190 z_context->int_pulse_end = z_context->int_pulse_start + Z80_VINT_DURATION; |
191 } | |
192 if (z_context->iff1) { | |
193 z_context->int_cycle = z_context->int_pulse_start < z_context->int_enable_cycle ? z_context->int_enable_cycle : z_context->int_pulse_start; | |
602
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194 } else { |
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195 z_context->int_cycle = CYCLE_NEVER; |
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196 } |
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197 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle; |
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198 dprintf("Running Z80 from cycle %d to cycle %d. Int cycle: %d\n", z_context->current_cycle, z_context->sync_cycle, z_context->int_cycle); |
593
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199 z_context->run(z_context); |
505
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200 dprintf("Z80 ran to cycle %d\n", z_context->current_cycle); |
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201 } |
260
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202 } |
548
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Initial work on the x86-32 target
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203 } else |
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204 #endif |
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205 { |
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206 z_context->current_cycle = mclks; |
260
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207 } |
268
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208 } |
380
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Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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209 |
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210 void sync_sound(genesis_context * gen, uint32_t target) |
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211 { |
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212 //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); |
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213 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) { |
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214 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES; |
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215 //printf("Running PSG to cycle %d\n", cur_target); |
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216 psg_run(gen->psg, cur_target); |
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217 //printf("Running YM-2612 to cycle %d\n", cur_target); |
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218 ym_run(gen->ym, cur_target); |
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219 } |
380
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220 psg_run(gen->psg, target); |
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221 ym_run(gen->ym, target); |
488
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222 |
380
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223 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2); |
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Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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224 } |
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225 |
321
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226 uint32_t frame=0; |
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227 m68k_context * sync_components(m68k_context * context, uint32_t address) |
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228 { |
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229 //TODO: Handle sync targets smaller than a single frame |
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230 genesis_context * gen = context->system; |
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231 vdp_context * v_context = gen->vdp; |
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232 z80_context * z_context = gen->z80; |
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233 uint32_t mclks = context->current_cycle; |
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234 sync_z80(z_context, mclks); |
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235 if (mclks >= mclk_target) { |
380
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236 sync_sound(gen, mclks); |
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237 gen->ym->current_cycle -= mclk_target; |
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238 gen->psg->cycles -= mclk_target; |
374 | 239 if (gen->ym->write_cycle != CYCLE_NEVER) { |
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240 gen->ym->write_cycle = gen->ym->write_cycle >= mclk_target ? gen->ym->write_cycle - mclk_target : 0; |
374 | 241 } |
453
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242 //printf("reached frame end | 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks); |
623
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Fix most of the breakage caused by the vcounter/hcounter changes
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243 vdp_run_context(v_context, mclk_target); |
488
32f053ad9b02
Basic OpenGL rendering is working
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244 |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
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211
diff
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245 if (!headless) { |
338
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
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336
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|
246 break_on_sync |= wait_render_frame(v_context, frame_limit); |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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247 } else if(exit_after){ |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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248 --exit_after; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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|
249 if (!exit_after) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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parents:
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250 exit(0); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
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251 } |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
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252 } |
321
146c87616b05
Don't update interrupt mask on non-interrupt exceptions
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diff
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253 frame++; |
623
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Fix most of the breakage caused by the vcounter/hcounter changes
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254 mclks -= mclk_target; |
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Fix most of the breakage caused by the vcounter/hcounter changes
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255 vdp_adjust_cycles(v_context, mclk_target); |
667
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All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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256 io_adjust_cycles(gen->ports, context->current_cycle, mclk_target); |
30ccf56842d6
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257 io_adjust_cycles(gen->ports+1, context->current_cycle, mclk_target); |
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258 io_adjust_cycles(gen->ports+2, context->current_cycle, mclk_target); |
344
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259 if (busack_cycle != CYCLE_NEVER) { |
667
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All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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260 if (busack_cycle > mclk_target) { |
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261 busack_cycle -= mclk_target; |
344
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262 } else { |
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263 busack_cycle = CYCLE_NEVER; |
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264 busack = new_busack; |
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265 } |
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266 } |
667
30ccf56842d6
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267 context->current_cycle -= mclk_target; |
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268 if (z_context->current_cycle >= mclk_target) { |
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269 z_context->current_cycle -= mclk_target; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
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270 } else { |
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Initial stab at integartiong Z80 core
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271 z_context->current_cycle = 0; |
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272 } |
628 | 273 if (z_context->int_cycle != CYCLE_NEVER) { |
667
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274 if (z_context->int_cycle >= mclk_target) { |
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275 z_context->int_cycle -= mclk_target; |
628 | 276 } else { |
277 z_context->int_cycle = 0; | |
278 } | |
279 } | |
280 if (z_context->int_pulse_start != CYCLE_NEVER) { | |
667
30ccf56842d6
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281 if (z_context->int_pulse_end >= mclk_target) { |
30ccf56842d6
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282 z_context->int_pulse_end -= mclk_target; |
30ccf56842d6
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parents:
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283 if (z_context->int_pulse_start >= mclk_target) { |
30ccf56842d6
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284 z_context->int_pulse_start -= mclk_target; |
628 | 285 } else { |
286 z_context->int_pulse_start = 0; | |
287 } | |
288 } | |
289 } else { | |
290 z_context->int_pulse_start = CYCLE_NEVER; | |
291 z_context->int_pulse_end = CYCLE_NEVER; | |
292 } | |
667
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293 if (z_context->int_enable_cycle >= mclk_target) { |
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294 z_context->int_enable_cycle -= mclk_target; |
628 | 295 } else { |
296 z_context->int_enable_cycle = 0; | |
297 } | |
88
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298 if (mclks) { |
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299 vdp_run_context(v_context, mclks); |
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300 } |
623
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301 mclk_target = vdp_cycles_to_frame_end(v_context); |
667
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302 context->sync_cycle = mclk_target; |
88
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303 } else { |
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304 //printf("running VDP for %d cycles\n", mclks - v_context->cycles); |
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305 vdp_run_context(v_context, mclks); |
380
1c8d74f2ab0b
Make the PSG and YM2612 use the master clock internal with an increment based on clock divider so that they stay perflectly in sync. Run both the PSG and YM2612 whenver one of them needs to be run.
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306 sync_sound(gen, mclks); |
88
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diff
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307 } |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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308 if (context->int_ack) { |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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309 vdp_int_ack(v_context, context->int_ack); |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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310 context->int_ack = 0; |
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Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
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parents:
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|
311 } |
186
02e25abe2dcd
Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
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parents:
185
diff
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|
312 adjust_int_cycle(context, v_context); |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
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|
313 if (address) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
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314 if (break_on_sync) { |
198
209a37eed3e7
Add support for breaking into the debugger while game is running
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diff
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315 break_on_sync = 0; |
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316 debugger(context, address); |
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Add support for breaking into the debugger while game is running
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317 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
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diff
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318 if (save_state) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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diff
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319 save_state = 0; |
667
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All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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parents:
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320 //advance Z80 core to the start of an instruction |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
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diff
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321 while (!z_context->pc) |
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Added support for saving savestates. Added gst savestate format test harness
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parents:
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322 { |
667
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All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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parents:
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323 sync_z80(z_context, z_context->current_cycle + MCLKS_PER_Z80); |
451
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Added support for saving savestates. Added gst savestate format test harness
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parents:
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324 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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325 save_gst(gen, "savestate.gst", address); |
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Added support for saving savestates. Added gst savestate format test harness
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parents:
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326 } |
198
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parents:
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327 } |
88
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diff
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328 return context; |
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parents:
diff
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329 } |
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330 |
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diff
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331 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) |
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parents:
diff
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332 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
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diff
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333 if (vdp_port & 0x2700E0) { |
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Mostly working runtime generation of memory map read/write functions
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diff
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334 printf("machine freeze due to write to address %X\n", 0xC00000 | vdp_port); |
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Mostly working runtime generation of memory map read/write functions
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335 exit(1); |
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Mostly working runtime generation of memory map read/write functions
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parents:
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diff
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|
336 } |
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337 vdp_port &= 0x1F; |
88
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338 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); |
198
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diff
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339 sync_components(context, 0); |
263
2989ed7b8608
Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K.
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260
diff
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340 vdp_context * v_context = context->video_context; |
508
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
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parents:
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diff
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341 genesis_context * gen = context->system; |
88
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parents:
diff
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|
342 if (vdp_port < 0x10) { |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
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|
343 int blocked; |
345
29d2ca563499
Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
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parents:
344
diff
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344 uint32_t before_cycle = v_context->cycles; |
88
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parents:
diff
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345 if (vdp_port < 4) { |
508
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
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parents:
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diff
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346 gen->bus_busy = 1; |
149
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Make writes to control and data port block when DMA is in progress
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parents:
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diff
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347 while (vdp_data_port_write(v_context, value) < 0) { |
88
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parents:
diff
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348 while(v_context->flags & FLAG_DMA_RUN) { |
623
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Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
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diff
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349 vdp_run_dma_done(v_context, mclk_target); |
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parents:
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diff
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350 if (v_context->cycles >= mclk_target) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
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diff
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|
351 context->current_cycle = v_context->cycles; |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
352 if (context->current_cycle < mclk_target) { |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
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353 context->current_cycle += MCLKS_PER_68K; |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
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354 } |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents:
531
diff
changeset
|
355 sync_components(context, 0); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
356 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
357 } |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
358 //context->current_cycle = v_context->cycles; |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
359 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
360 } else if(vdp_port < 8) { |
508
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
361 gen->bus_busy = 1; |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
362 blocked = vdp_control_port_write(v_context, value); |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
363 if (blocked) { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
364 while (blocked) { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
365 while(v_context->flags & FLAG_DMA_RUN) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
366 vdp_run_dma_done(v_context, mclk_target); |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
367 if (v_context->cycles >= mclk_target) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
368 context->current_cycle = v_context->cycles; |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
369 if (context->current_cycle < mclk_target) { |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
370 context->current_cycle += MCLKS_PER_68K; |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
371 } |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents:
531
diff
changeset
|
372 sync_components(context, 0); |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
373 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
374 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
375 if (blocked < 0) { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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parents:
144
diff
changeset
|
376 blocked = vdp_control_port_write(v_context, value); |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
377 } else { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
378 blocked = 0; |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
379 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
380 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
381 } else { |
186
02e25abe2dcd
Cleanup VINT code and fix bug in which VINT cycle would be set incorrectly after a VDP control port write
Mike Pavone <pavone@retrodev.com>
parents:
185
diff
changeset
|
382 adjust_int_cycle(context, v_context); |
88
c339559f1d4f
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parents:
diff
changeset
|
383 } |
c339559f1d4f
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parents:
diff
changeset
|
384 } else { |
c339559f1d4f
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parents:
diff
changeset
|
385 printf("Illegal write to HV Counter port %X\n", vdp_port); |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
386 exit(1); |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
387 } |
345
29d2ca563499
Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
Mike Pavone <pavone@retrodev.com>
parents:
344
diff
changeset
|
388 if (v_context->cycles != before_cycle) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
389 //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); |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
390 context->current_cycle = v_context->cycles; |
345
29d2ca563499
Don't sync the 68K clock to the VDP clock unless the 68K had to wait for the VDP. This unfortunately breaks the direct color DMA demos, but should be more correct overall.
Mike Pavone <pavone@retrodev.com>
parents:
344
diff
changeset
|
391 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
392 } else if (vdp_port < 0x18) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
393 sync_sound(gen, context->current_cycle); |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
394 psg_write(gen->psg, value); |
88
c339559f1d4f
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parents:
diff
changeset
|
395 } else { |
c339559f1d4f
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parents:
diff
changeset
|
396 //TODO: Implement undocumented test register(s) |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
397 } |
508
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
398 if (gen->bus_busy) |
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
399 { |
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
400 //Lock the Z80 out of the bus until the VDP access is complete |
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
401 sync_z80(gen->z80, v_context->cycles); |
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
402 gen->bus_busy = 0; |
b976c6d6e5fb
Initial attempt at emulating extended bank area access delays when 68K bus is busy with VDP stuff. Also emulate the extra delay on the second access of a word-wide read to the bank area. Needs work as it seems to break stuff.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
403 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
404 return context; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
405 } |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
406 |
343
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Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
407 m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value) |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
408 { |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
409 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value | value << 8 : ((vdp_port & 1) ? value : 0)); |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
410 } |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
411 |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
412 void * z80_vdp_port_write(uint32_t vdp_port, void * vcontext, uint8_t value) |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
413 { |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
414 z80_context * context = vcontext; |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
415 genesis_context * gen = context->system; |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
416 vdp_port &= 0xFF; |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
417 if (vdp_port & 0xE0) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
418 printf("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
419 exit(1); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
420 } |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
421 if (vdp_port < 0x10) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
422 //These probably won't currently interact well with the 68K accessing the VDP |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
423 vdp_run_context(gen->vdp, context->current_cycle); |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
424 if (vdp_port < 4) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
425 vdp_data_port_write(gen->vdp, value << 8 | value); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
426 } else if (vdp_port < 8) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
427 vdp_control_port_write(gen->vdp, value << 8 | value); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
428 } else { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
429 printf("Illegal write to HV Counter port %X\n", vdp_port); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
430 exit(1); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
431 } |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
432 } else if (vdp_port < 0x18) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
433 sync_sound(gen, context->current_cycle); |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
434 psg_write(gen->psg, value); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
435 } else { |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
469
diff
changeset
|
436 vdp_test_port_write(gen->vdp, value); |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
437 } |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
438 return context; |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
439 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
440 |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
441 uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context) |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
442 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
443 if (vdp_port & 0x2700E0) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
444 printf("machine freeze due to read from address %X\n", 0xC00000 | vdp_port); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
445 exit(1); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
446 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
447 vdp_port &= 0x1F; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
448 uint16_t value; |
198
209a37eed3e7
Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents:
197
diff
changeset
|
449 sync_components(context, 0); |
263
2989ed7b8608
Add a second context pointer to m68k_context so that try_fifo_write can still have easy access to the VDP. Handle writes to Z80 code addresses from the 68K.
Mike Pavone <pavone@retrodev.com>
parents:
260
diff
changeset
|
450 vdp_context * v_context = context->video_context; |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
Mike Pavone <pavone@retrodev.com>
parents:
469
diff
changeset
|
451 uint32_t before_cycle = v_context->cycles; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
452 if (vdp_port < 0x10) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
453 if (vdp_port < 4) { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
454 value = vdp_data_port_read(v_context); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
455 } else if(vdp_port < 8) { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
456 value = vdp_control_port_read(v_context); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
457 } else { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
458 value = vdp_hv_counter_read(v_context); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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459 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles); |
88
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460 } |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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469
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|
461 } else if (vdp_port < 0x18){ |
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Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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469
diff
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462 printf("Illegal read from PSG port %X\n", vdp_port); |
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Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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469
diff
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|
463 exit(1); |
88
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|
464 } else { |
470
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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469
diff
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465 value = vdp_test_port_read(v_context); |
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Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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469
diff
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|
466 } |
541c1ae8abf3
Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM.
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parents:
469
diff
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|
467 if (v_context->cycles != before_cycle) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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468 //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); |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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|
469 context->current_cycle = v_context->cycles; |
88
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470 } |
343
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471 return value; |
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|
472 } |
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473 |
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474 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context) |
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475 { |
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476 uint16_t value = vdp_port_read(vdp_port, context); |
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477 if (vdp_port & 1) { |
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478 return value; |
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479 } else { |
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480 return value >> 8; |
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481 } |
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482 } |
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|
483 |
592
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484 uint8_t z80_vdp_port_read(uint32_t vdp_port, void * vcontext) |
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485 { |
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486 z80_context * context = vcontext; |
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487 if (vdp_port & 0xE0) { |
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488 printf("machine freeze due to read from Z80 address %X\n", 0x7F00 | vdp_port); |
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489 exit(1); |
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490 } |
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491 genesis_context * gen = context->system; |
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492 vdp_port &= 0x1F; |
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493 uint16_t ret; |
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494 if (vdp_port < 0x10) { |
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|
495 //These probably won't currently interact well with the 68K accessing the VDP |
667
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496 vdp_run_context(gen->vdp, context->current_cycle); |
592
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497 if (vdp_port < 4) { |
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498 ret = vdp_data_port_read(gen->vdp); |
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499 } else if (vdp_port < 8) { |
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500 ret = vdp_control_port_read(gen->vdp); |
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501 } else { |
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502 printf("Illegal write to HV Counter port %X\n", vdp_port); |
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503 exit(1); |
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|
504 } |
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505 } else { |
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506 //TODO: Figure out the correct value today |
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507 ret = 0xFFFF; |
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508 } |
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509 return vdp_port & 1 ? ret : ret >> 8; |
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510 } |
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|
511 |
279
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512 uint32_t zram_counter = 0; |
289
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513 #define Z80_ACK_DELAY 3 |
336
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514 #define Z80_BUSY_DELAY 1//TODO: Find the actual value for this |
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515 #define Z80_REQ_BUSY 1 |
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516 #define Z80_REQ_ACK 0 |
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517 #define Z80_RES_BUSACK reset |
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518 |
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|
519 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value) |
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520 { |
288
a8ee7934a1f8
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521 genesis_context * gen = context->system; |
153
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522 if (location < 0x10000) { |
336
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523 if (busack_cycle <= context->current_cycle) { |
153
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524 busack = new_busack; |
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|
525 busack_cycle = CYCLE_NEVER; |
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diff
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|
526 } |
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|
527 if (!(busack || reset)) { |
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|
528 location &= 0x7FFF; |
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|
529 if (location < 0x4000) { |
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diff
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|
530 z80_ram[location & 0x1FFF] = value; |
565
9324f721efa6
Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
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558
diff
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|
531 #ifndef NO_Z80 |
288
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532 z80_handle_code_write(location & 0x1FFF, gen->z80); |
548
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Michael Pavone <pavone@retrodev.com>
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534
diff
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|
533 #endif |
288
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|
534 } else if (location < 0x6000) { |
667
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|
535 sync_sound(gen, context->current_cycle); |
288
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|
536 if (location & 1) { |
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537 ym_data_write(gen->ym, value); |
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538 } else if(location & 2) { |
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539 ym_address_write_part2(gen->ym, value); |
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|
540 } else { |
a8ee7934a1f8
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|
541 ym_address_write_part1(gen->ym, value); |
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|
542 } |
405
042c4ba4a838
Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
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parents:
404
diff
changeset
|
543 } else if (location == 0x6000) { |
042c4ba4a838
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parents:
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diff
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|
544 gen->z80->bank_reg = (gen->z80->bank_reg >> 1 | value << 8) & 0x1FF; |
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Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
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diff
changeset
|
545 if (gen->z80->bank_reg < 0x80) { |
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diff
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|
546 gen->z80->mem_pointers[1] = (gen->z80->bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]); |
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404
diff
changeset
|
547 } else { |
042c4ba4a838
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diff
changeset
|
548 gen->z80->mem_pointers[1] = NULL; |
042c4ba4a838
Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
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diff
changeset
|
549 } |
395
0b5f93358a93
Add debugger command for saving Z80 RAM to a file
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parents:
392
diff
changeset
|
550 } else { |
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Add debugger command for saving Z80 RAM to a file
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parents:
392
diff
changeset
|
551 printf("68K write to unhandled Z80 address %X\n", location); |
0b5f93358a93
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Mike Pavone <pavone@retrodev.com>
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392
diff
changeset
|
552 exit(1); |
153
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Implement access to Z80 RAM
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|
553 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
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diff
changeset
|
554 } |
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Forgot to add blastem main file earlier
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|
555 } else { |
153
42c031184e8a
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diff
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|
556 location &= 0x1FFF; |
42c031184e8a
Implement access to Z80 RAM
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diff
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|
557 if (location < 0x100) { |
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
558 switch(location/2) |
42c031184e8a
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diff
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|
559 { |
42c031184e8a
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diff
changeset
|
560 case 0x1: |
421
d0cacb4ade0b
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parents:
418
diff
changeset
|
561 io_data_write(gen->ports, value, context->current_cycle); |
153
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|
562 break; |
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|
563 case 0x2: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
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diff
changeset
|
564 io_data_write(gen->ports+1, value, context->current_cycle); |
153
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diff
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|
565 break; |
421
d0cacb4ade0b
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parents:
418
diff
changeset
|
566 case 0x3: |
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diff
changeset
|
567 io_data_write(gen->ports+2, value, context->current_cycle); |
153
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149
diff
changeset
|
568 break; |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
569 case 0x4: |
421
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
570 gen->ports[0].control = value; |
153
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parents:
149
diff
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|
571 break; |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents:
149
diff
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|
572 case 0x5: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
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|
573 gen->ports[1].control = value; |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
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parents:
418
diff
changeset
|
574 break; |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
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parents:
418
diff
changeset
|
575 case 0x6: |
d0cacb4ade0b
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Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
576 gen->ports[2].control = value; |
153
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diff
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|
577 break; |
88
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|
578 } |
153
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Implement access to Z80 RAM
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diff
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|
579 } else { |
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|
580 if (location == 0x1100) { |
336
87b65e5ce1ab
Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too
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335
diff
changeset
|
581 if (busack_cycle <= context->current_cycle) { |
153
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|
582 busack = new_busack; |
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|
583 busack_cycle = CYCLE_NEVER; |
88
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|
584 } |
153
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149
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585 if (value & 1) { |
271
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diff
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|
586 dputs("bus requesting Z80"); |
488
32f053ad9b02
Basic OpenGL rendering is working
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parents:
487
diff
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|
587 |
336
87b65e5ce1ab
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335
diff
changeset
|
588 if(!reset && !busreq) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
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parents:
661
diff
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|
589 sync_z80(gen->z80, context->current_cycle + Z80_ACK_DELAY*MCLKS_PER_Z80); |
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
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diff
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|
590 busack_cycle = gen->z80->current_cycle;//context->current_cycle + Z80_ACK_DELAY; |
289
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288
diff
changeset
|
591 new_busack = Z80_REQ_ACK; |
153
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diff
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|
592 } |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
Mike Pavone <pavone@retrodev.com>
parents:
362
diff
changeset
|
593 busreq = 1; |
153
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Implement access to Z80 RAM
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|
594 } else { |
667
30ccf56842d6
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parents:
661
diff
changeset
|
595 sync_z80(gen->z80, context->current_cycle); |
260
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215
diff
changeset
|
596 if (busreq) { |
271
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268
diff
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|
597 dputs("releasing z80 bus"); |
280 | 598 #ifdef DO_DEBUG_PRINT |
279
6be6056735a9
Fix native address lookup in bannked memory area
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parents:
276
diff
changeset
|
599 char fname[20]; |
6be6056735a9
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276
diff
changeset
|
600 sprintf(fname, "zram-%d", zram_counter++); |
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Fix native address lookup in bannked memory area
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276
diff
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|
601 FILE * f = fopen(fname, "wb"); |
6be6056735a9
Fix native address lookup in bannked memory area
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276
diff
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602 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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276
diff
changeset
|
603 fclose(f); |
280 | 604 #endif |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
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|
605 busack_cycle = gen->z80->current_cycle + Z80_BUSY_DELAY; |
336
87b65e5ce1ab
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Mike Pavone <pavone@retrodev.com>
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335
diff
changeset
|
606 new_busack = Z80_REQ_BUSY; |
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Mike Pavone <pavone@retrodev.com>
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diff
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|
607 busreq = 0; |
260
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Initial stab at integartiong Z80 core
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diff
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|
608 } |
289
1cc0850ab6bc
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288
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changeset
|
609 //busack_cycle = CYCLE_NEVER; |
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288
diff
changeset
|
610 //busack = Z80_REQ_BUSY; |
488
32f053ad9b02
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parents:
487
diff
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|
611 |
88
c339559f1d4f
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|
612 } |
153
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|
613 } else if (location == 0x1200) { |
667
30ccf56842d6
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parents:
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diff
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|
614 sync_z80(gen->z80, context->current_cycle); |
153
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diff
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|
615 if (value & 1) { |
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149
diff
changeset
|
616 if (reset && busreq) { |
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diff
changeset
|
617 new_busack = 0; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
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diff
changeset
|
618 busack_cycle = gen->z80->current_cycle + Z80_ACK_DELAY;//context->current_cycle + Z80_ACK_DELAY; |
153
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parents:
149
diff
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|
619 } |
260
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|
620 //TODO: Deal with the scenario in which reset is not asserted long enough |
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|
621 if (reset) { |
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changeset
|
622 need_reset = 1; |
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parents:
215
diff
changeset
|
623 //TODO: Add necessary delay between release of reset and start of execution |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
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661
diff
changeset
|
624 gen->z80->current_cycle = context->current_cycle + 16 * MCLKS_PER_Z80; |
260
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diff
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|
625 } |
153
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149
diff
changeset
|
626 reset = 0; |
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149
diff
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|
627 } else { |
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149
diff
changeset
|
628 reset = 1; |
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diff
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|
629 } |
88
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parents:
diff
changeset
|
630 } |
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parents:
diff
changeset
|
631 } |
c339559f1d4f
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parents:
diff
changeset
|
632 } |
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parents:
diff
changeset
|
633 return context; |
c339559f1d4f
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parents:
diff
changeset
|
634 } |
c339559f1d4f
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parents:
diff
changeset
|
635 |
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parents:
diff
changeset
|
636 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value) |
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diff
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|
637 { |
404
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
638 if (location < 0x10000 || (location & 0x1FFF) >= 0x100) { |
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
639 return io_write(location, context, value >> 8); |
88
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parents:
diff
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|
640 } else { |
404
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
641 return io_write(location, context, value); |
88
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diff
changeset
|
642 } |
c339559f1d4f
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parents:
diff
changeset
|
643 } |
c339559f1d4f
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parents:
diff
changeset
|
644 |
130
0bdbffa9fe90
Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents:
115
diff
changeset
|
645 #define USA 0x80 |
0bdbffa9fe90
Make version register return correct value for USA
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parents:
115
diff
changeset
|
646 #define JAP 0x00 |
0bdbffa9fe90
Make version register return correct value for USA
Mike Pavone <pavone@retrodev.com>
parents:
115
diff
changeset
|
647 #define EUR 0xC0 |
0bdbffa9fe90
Make version register return correct value for USA
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parents:
115
diff
changeset
|
648 #define NO_DISK 0x20 |
0bdbffa9fe90
Make version register return correct value for USA
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parents:
115
diff
changeset
|
649 uint8_t version_reg = NO_DISK | USA; |
0bdbffa9fe90
Make version register return correct value for USA
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parents:
115
diff
changeset
|
650 |
343
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parents:
342
diff
changeset
|
651 uint8_t io_read(uint32_t location, m68k_context * context) |
88
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Forgot to add blastem main file earlier
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parents:
diff
changeset
|
652 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
653 uint8_t value; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
654 genesis_context *gen = context->system; |
153
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
655 if (location < 0x10000) { |
336
87b65e5ce1ab
Fix a stupid bug in z80 busreq acknowledge delay code and make some small improvements there too
Mike Pavone <pavone@retrodev.com>
parents:
335
diff
changeset
|
656 if (busack_cycle <= context->current_cycle) { |
153
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Implement access to Z80 RAM
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149
diff
changeset
|
657 busack = new_busack; |
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
658 busack_cycle = CYCLE_NEVER; |
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Implement access to Z80 RAM
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149
diff
changeset
|
659 } |
289
1cc0850ab6bc
Hopefully more correct implementation of the Z80 busack status
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parents:
288
diff
changeset
|
660 if (!(busack==Z80_REQ_BUSY || reset)) { |
153
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Implement access to Z80 RAM
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149
diff
changeset
|
661 location &= 0x7FFF; |
42c031184e8a
Implement access to Z80 RAM
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149
diff
changeset
|
662 if (location < 0x4000) { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
663 value = z80_ram[location & 0x1FFF]; |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
664 } else if (location < 0x6000) { |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
665 sync_sound(gen, context->current_cycle); |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
666 value = ym_read_status(gen->ym); |
153
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Implement access to Z80 RAM
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149
diff
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|
667 } else { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
668 value = 0xFF; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
669 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
670 } else { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
671 value = 0xFF; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
672 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
673 } else { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
674 location &= 0x1FFF; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
675 if (location < 0x100) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
676 switch(location/2) |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
677 { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
678 case 0x0: |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
679 //version bits should be 0 for now since we're not emulating TMSS |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
680 value = version_reg; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
681 break; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
682 case 0x1: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
683 value = io_data_read(gen->ports, context->current_cycle); |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
684 break; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
685 case 0x2: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
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parents:
418
diff
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|
686 value = io_data_read(gen->ports+1, context->current_cycle); |
343
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342
diff
changeset
|
687 break; |
421
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Move IO code to a separate file and do a tiny bit of refactoring
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parents:
418
diff
changeset
|
688 case 0x3: |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
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parents:
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diff
changeset
|
689 value = io_data_read(gen->ports+2, context->current_cycle); |
343
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diff
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|
690 break; |
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342
diff
changeset
|
691 case 0x4: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
692 value = gen->ports[0].control; |
343
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342
diff
changeset
|
693 break; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
694 case 0x5: |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
695 value = gen->ports[1].control; |
343
467bfa17004a
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parents:
342
diff
changeset
|
696 break; |
421
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
697 case 0x6: |
d0cacb4ade0b
Move IO code to a separate file and do a tiny bit of refactoring
Mike Pavone <pavone@retrodev.com>
parents:
418
diff
changeset
|
698 value = gen->ports[2].control; |
405
042c4ba4a838
Implement writes from 68K to Z80 bank register and make reads from port c control register return 0 again
Mike Pavone <pavone@retrodev.com>
parents:
404
diff
changeset
|
699 break; |
343
467bfa17004a
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Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
700 default: |
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342
diff
changeset
|
701 value = 0xFF; |
153
42c031184e8a
Implement access to Z80 RAM
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parents:
149
diff
changeset
|
702 } |
42c031184e8a
Implement access to Z80 RAM
Mike Pavone <pavone@retrodev.com>
parents:
149
diff
changeset
|
703 } else { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
704 if (location == 0x1100) { |
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Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
705 if (busack_cycle <= context->current_cycle) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
706 busack = new_busack; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
707 busack_cycle = CYCLE_NEVER; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
708 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
709 value = Z80_RES_BUSACK || busack; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
710 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d, busack: %d, busack_cycle %d)\n", value, context->current_cycle, reset, busack, busack_cycle); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
711 } else if (location == 0x1200) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
712 value = !reset; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
713 } else { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
714 value = 0xFF; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
715 printf("Byte read of unknown IO location: %X\n", location); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
716 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
717 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
718 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
719 return value; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
720 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
721 |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
722 uint16_t io_read_w(uint32_t location, m68k_context * context) |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
723 { |
404
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
724 uint16_t value = io_read(location, context); |
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
725 if (location < 0x10000 || (location & 0x1FFF) < 0x100) { |
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
726 value = value | (value << 8); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
727 } else { |
404
88fa2ad53e64
Minor refactor of io_read functions to avoid duplication of logic between byte and word versions
Mike Pavone <pavone@retrodev.com>
parents:
402
diff
changeset
|
728 value <<= 8; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
729 } |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
730 return value; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
731 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
732 |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
733 void * z80_write_ym(uint32_t location, void * vcontext, uint8_t value) |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
734 { |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
735 z80_context * context = vcontext; |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
736 genesis_context * gen = context->system; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
737 sync_sound(gen, context->current_cycle); |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
738 if (location & 1) { |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
739 ym_data_write(gen->ym, value); |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
740 } else if (location & 2) { |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
741 ym_address_write_part2(gen->ym, value); |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
742 } else { |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
743 ym_address_write_part1(gen->ym, value); |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
744 } |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
745 return context; |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
746 } |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
747 |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
748 uint8_t z80_read_ym(uint32_t location, void * vcontext) |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
749 { |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
750 z80_context * context = vcontext; |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
751 genesis_context * gen = context->system; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
752 sync_sound(gen, context->current_cycle); |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
753 return ym_read_status(gen->ym); |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
754 } |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
755 |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
756 uint8_t z80_read_bank(uint32_t location, void * vcontext) |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
757 { |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
758 z80_context * context = vcontext; |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
759 //typical delay from bus arbitration |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
760 context->current_cycle += 3; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
761 |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
762 location &= 0x7FFF; |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
763 //TODO: add cycle for an access right after a previous one |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
764 //TODO: block Z80 if VDP has the bus or the 68K is blocked on a VDP access |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
765 if (context->mem_pointers[1]) { |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
766 return context->mem_pointers[1][location ^ 1]; |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
767 } |
604
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
768 uint32_t address = context->bank_reg << 15 | location; |
616
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
769 if (address >= 0xC00000 && address < 0xE00000) { |
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
770 return z80_vdp_port_read(location & 0xFF, context); |
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
771 } else { |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
772 fprintf(stderr, "Unhandled read by Z80 from address %X through banked memory area (%X)\n", address, context->bank_reg << 15); |
616
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
773 } |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
774 return 0; |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
775 } |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
776 |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
777 void *z80_write_bank(uint32_t location, void * vcontext, uint8_t value) |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
778 { |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
779 z80_context * context = vcontext; |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
780 //typical delay from bus arbitration |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
781 context->current_cycle += 3; |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
782 location &= 0x7FFF; |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
783 //TODO: add cycle for an access right after a previous one |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
784 //TODO: block Z80 if VDP has the bus or the 68K is blocked on a VDP access |
604
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
785 uint32_t address = context->bank_reg << 15 | location; |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
786 if (address >= 0xE00000) { |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
787 address &= 0xFFFF; |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
788 ((uint8_t *)ram)[address ^ 1] = value; |
616
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
789 } else if (address >= 0xC00000) { |
649db9397fa1
Add support for Z80 access to VDP via bank area
Michael Pavone <pavone@retrodev.com>
parents:
606
diff
changeset
|
790 z80_vdp_port_write(location & 0xFF, context, value); |
604
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
791 } else { |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
792 fprintf(stderr, "Unhandled write by Z80 to address %X through banked memory area\n", address); |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
793 } |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
794 return context; |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
795 } |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
796 |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
797 void *z80_write_bank_reg(uint32_t location, void * vcontext, uint8_t value) |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
798 { |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
799 z80_context * context = vcontext; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
800 |
604
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
801 context->bank_reg = (context->bank_reg >> 1 | value << 8) & 0x1FF; |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
802 if (context->bank_reg < 0x80) { |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
803 genesis_context *gen = context->system; |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
804 context->mem_pointers[1] = get_native_pointer(context->bank_reg << 15, (void **)gen->m68k->mem_pointers, &gen->m68k->options->gen); |
604
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
805 } else { |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
806 context->mem_pointers[1] = NULL; |
39d7d463ed5b
Get Z80 banked access sort of working again
Michael Pavone <pavone@retrodev.com>
parents:
602
diff
changeset
|
807 } |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
808 |
592
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
809 return context; |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
810 } |
4ff7bbb3943b
Get rest of emulator compiling again with Z80 core enabled
Michael Pavone <pavone@retrodev.com>
parents:
590
diff
changeset
|
811 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
812 uint16_t read_sram_w(uint32_t address, m68k_context * context) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
813 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
814 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
815 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
816 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
817 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
818 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
819 return gen->save_ram[address] << 8 | gen->save_ram[address+1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
820 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
821 return gen->save_ram[address >> 1] << 8 | 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
822 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
823 return gen->save_ram[address >> 1] | 0xFF00; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
824 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
825 return 0xFFFF;//We should never get here |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
826 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
827 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
828 uint8_t read_sram_b(uint32_t address, m68k_context * context) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
829 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
830 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
831 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
832 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
833 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
834 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
835 return gen->save_ram[address]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
836 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
837 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
838 return 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
839 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
840 return gen->save_ram[address >> 1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
841 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
842 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
843 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
844 return gen->save_ram[address >> 1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
845 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
846 return 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
847 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
848 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
849 return 0xFF;//We should never get here |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
850 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
851 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
852 m68k_context * write_sram_area_w(uint32_t address, m68k_context * context, uint16_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
853 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
854 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
855 if ((gen->bank_regs[0] & 0x3) == 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
856 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
857 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
858 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
859 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
860 gen->save_ram[address] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
861 gen->save_ram[address+1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
862 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
863 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
864 gen->save_ram[address >> 1] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
865 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
866 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
867 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
868 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
869 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
870 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
871 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
872 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
873 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
874 m68k_context * write_sram_area_b(uint32_t address, m68k_context * context, uint8_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
875 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
876 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
877 if ((gen->bank_regs[0] & 0x3) == 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
878 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
879 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
880 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
881 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
882 gen->save_ram[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
883 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
884 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
885 if (!(address & 1)) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
886 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
887 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
888 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
889 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
890 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
891 gen->save_ram[address >> 1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
892 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
893 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
894 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
895 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
896 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
897 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
898 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
899 m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
900 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
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|
901 genesis_context * gen = context->system; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
902 address &= 0xE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
903 address >>= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
904 gen->bank_regs[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
905 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
906 if (value & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
907 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
908 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
909 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
910 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
911 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
912 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
913 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
914 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
915 m68k_context * write_bank_reg_b(uint32_t address, m68k_context * context, uint8_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
916 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
917 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
918 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
919 address &= 0xE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
920 address >>= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
921 gen->bank_regs[address] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
922 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
923 if (value & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
924 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
925 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
926 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
927 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
928 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
929 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
930 return context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
931 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
932 |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
933 void set_speed_percent(genesis_context * context, uint32_t percent) |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
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parents:
482
diff
changeset
|
934 { |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
935 uint32_t old_clock = context->master_clock; |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
936 context->master_clock = ((uint64_t)context->normal_clock * (uint64_t)percent) / 100; |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
937 while (context->ym->current_cycle != context->psg->cycles) { |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
938 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG); |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
939 } |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
940 ym_adjust_master_clock(context->ym, context->master_clock); |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
941 psg_adjust_master_clock(context->psg, context->master_clock); |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
942 } |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
943 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
944 #define ROM_END 0x1A4 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
945 #define RAM_ID 0x1B0 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
946 #define RAM_FLAGS 0x1B2 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
947 #define RAM_START 0x1B4 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
948 #define RAM_END 0x1B8 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
949 #define MAX_MAP_CHUNKS (4+7+1) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
950 #define RAM_FLAG_MASK 0x1800 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
951 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
952 const memmap_chunk static_map[] = { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
953 {0, 0x400000, 0xFFFFFF, 0, MMAP_READ, cart, |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
954 NULL, NULL, NULL, NULL}, |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
955 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
956 NULL, NULL, NULL, NULL}, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
957 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
958 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
959 (read_8_fun)vdp_port_read_b, (write_8_fun)vdp_port_write_b}, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
960 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
961 (read_16_fun)io_read_w, (write_16_fun)io_write_w, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
962 (read_8_fun)io_read, (write_8_fun)io_write} |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
963 }; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
964 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
965 char * sram_filename; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
966 genesis_context * genesis; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
967 void save_sram() |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
968 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
969 FILE * f = fopen(sram_filename, "wb"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
970 if (!f) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
971 fprintf(stderr, "Failed to open SRAM file %s for writing\n", sram_filename); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
972 return; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
973 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
974 uint32_t size = genesis->save_ram_mask+1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
975 if (genesis->save_flags != RAM_FLAG_BOTH) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
976 size/= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
977 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
978 fwrite(genesis->save_ram, 1, size, f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
979 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
980 printf("Saved SRAM to %s\n", sram_filename); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
981 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
982 |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
983 void init_run_cpu(genesis_context * gen, FILE * address_log, char * statefile, uint8_t * debugger) |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
984 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
985 m68k_context context; |
569
9b7fcf748be0
Rename x86_68k_options and m68k_to_x86.h to m68k_options and m68k_core.h respectively
Michael Pavone <pavone@retrodev.com>
parents:
565
diff
changeset
|
986 m68k_options opts; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
987 gen->m68k = &context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
988 memmap_chunk memmap[MAX_MAP_CHUNKS]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
989 uint32_t num_chunks; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
990 void * initial_mapped = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
991 gen->save_ram = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
992 //TODO: Handle carts larger than 4MB |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
993 //TODO: Handle non-standard mappers |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
994 uint32_t size; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
995 if ((cart[RAM_ID/2] & 0xFF) == 'A' && (cart[RAM_ID/2] >> 8) == 'R') { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
996 //Cart has save RAM |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
997 uint32_t rom_end = ((cart[ROM_END/2] << 16) | cart[ROM_END/2+1]) + 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
998 uint32_t ram_start = (cart[RAM_START/2] << 16) | cart[RAM_START/2+1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
999 uint32_t ram_end = (cart[RAM_END/2] << 16) | cart[RAM_END/2+1]; |
2f264d2a60c2
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1000 uint16_t ram_flags = cart[RAM_FLAGS/2]; |
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1001 gen->save_flags = ram_flags & RAM_FLAG_MASK; |
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1002 memset(memmap, 0, sizeof(memmap_chunk)*2); |
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1003 if (ram_start >= rom_end) { |
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1004 memmap[0].end = rom_end; |
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1005 memmap[0].mask = 0xFFFFFF; |
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1006 memmap[0].flags = MMAP_READ; |
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|
1007 memmap[0].buffer = cart; |
488
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|
1008 |
351
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|
1009 ram_start &= 0xFFFFFE; |
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1010 ram_end |= 1; |
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|
1011 memmap[1].start = ram_start; |
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|
1012 gen->save_ram_mask = memmap[1].mask = ram_end-ram_start; |
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|
1013 ram_end += 1; |
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|
1014 memmap[1].end = ram_end; |
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|
1015 memmap[1].flags = MMAP_READ | MMAP_WRITE; |
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|
1016 size = ram_end-ram_start; |
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|
1017 if ((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_ODD) { |
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|
1018 memmap[1].flags |= MMAP_ONLY_ODD; |
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|
1019 size /= 2; |
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1020 } else if((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_EVEN) { |
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|
1021 memmap[1].flags |= MMAP_ONLY_EVEN; |
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|
1022 size /= 2; |
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|
1023 } |
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|
1024 memmap[1].buffer = gen->save_ram = malloc(size); |
488
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diff
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|
1025 |
351
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|
1026 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0])); |
2f264d2a60c2
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|
1027 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1; |
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|
1028 } else { |
2f264d2a60c2
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|
1029 //Assume the standard Sega mapper for now |
2f264d2a60c2
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|
1030 memmap[0].end = 0x200000; |
2f264d2a60c2
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|
1031 memmap[0].mask = 0xFFFFFF; |
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|
1032 memmap[0].flags = MMAP_READ; |
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|
1033 memmap[0].buffer = cart; |
488
32f053ad9b02
Basic OpenGL rendering is working
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diff
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|
1034 |
351
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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|
1035 memmap[1].start = 0x200000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1036 memmap[1].end = 0x400000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1037 memmap[1].mask = 0x1FFFFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1038 ram_start &= 0xFFFFFE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1039 ram_end |= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1040 gen->save_ram_mask = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1041 memmap[1].flags = MMAP_READ | MMAP_PTR_IDX | MMAP_FUNC_NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1042 memmap[1].ptr_index = 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1043 memmap[1].read_16 = (read_16_fun)read_sram_w;//these will only be called when mem_pointers[2] == NULL |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1044 memmap[1].read_8 = (read_8_fun)read_sram_b; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1045 memmap[1].write_16 = (write_16_fun)write_sram_area_w;//these will be called all writes to the area |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1046 memmap[1].write_8 = (write_8_fun)write_sram_area_b; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1047 memcpy(memmap+2, static_map+1, sizeof(static_map)-sizeof(static_map[0])); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1048 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1049 memset(memmap+num_chunks, 0, sizeof(memmap[num_chunks])); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1050 memmap[num_chunks].start = 0xA13000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1051 memmap[num_chunks].end = 0xA13100; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1052 memmap[num_chunks].mask = 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1053 memmap[num_chunks].write_16 = (write_16_fun)write_bank_reg_w; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1054 memmap[num_chunks].write_8 = (write_8_fun)write_bank_reg_b; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1055 num_chunks++; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1056 ram_end++; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1057 size = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1058 if ((ram_flags & RAM_FLAG_MASK) != RAM_FLAG_BOTH) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1059 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1060 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1061 gen->save_ram = malloc(size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1062 memmap[1].buffer = initial_mapped = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1063 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1064 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1065 memcpy(memmap, static_map, sizeof(static_map)); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1066 num_chunks = sizeof(static_map)/sizeof(memmap_chunk); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1067 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1068 if (gen->save_ram) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1069 memset(gen->save_ram, 0, size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1070 FILE * f = fopen(sram_filename, "rb"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1071 if (f) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1072 uint32_t read = fread(gen->save_ram, 1, size, f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1073 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1074 if (read > 0) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1075 printf("Loaded SRAM from %s\n", sram_filename); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1076 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1077 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1078 atexit(save_sram); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1079 } |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
1080 init_m68k_opts(&opts, memmap, num_chunks, MCLKS_PER_68K); |
211 | 1081 opts.address_log = address_log; |
558
dc9f178085a0
Use a typedef code_ptr in place of uint8_t * in 68K core to better support host instruction sets with different instruction word sizes. Make x86_68k_options contain a cpu_options so that gen_mem_fun can eventually be shared with the Z80 core.
Mike Pavone <pavone@retrodev.com>
parents:
548
diff
changeset
|
1082 init_68k_context(&context, opts.gen.native_code_map, &opts); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
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487
diff
changeset
|
1083 |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1084 context.video_context = gen->vdp; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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280
diff
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|
1085 context.system = gen; |
211 | 1086 //cartridge ROM |
1087 context.mem_pointers[0] = cart; | |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
1088 context.target_cycle = context.sync_cycle = mclk_target; |
211 | 1089 //work RAM |
1090 context.mem_pointers[1] = ram; | |
351
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1091 //save RAM/map |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1092 context.mem_pointers[2] = initial_mapped; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1093 context.mem_pointers[3] = (uint16_t *)gen->save_ram; |
211 | 1094 uint32_t address; |
1095 address = cart[2] << 16 | cart[3]; | |
1096 translate_m68k_stream(address, &context); | |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1097 if (statefile) { |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1098 uint32_t pc = load_gst(gen, statefile); |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1099 if (!pc) { |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
1100 fprintf(stderr, "Failed to load save state %s\n", statefile); |
424
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Add support for loading GST format savestates
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422
diff
changeset
|
1101 exit(1); |
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parents:
422
diff
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|
1102 } |
451
b7c3b2d22858
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Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
1103 printf("Loaded %s\n", statefile); |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1104 if (debugger) { |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1105 insert_breakpoint(&context, pc, debugger); |
424
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
1106 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
1107 adjust_int_cycle(gen->m68k, gen->vdp); |
565
9324f721efa6
Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
Michael Pavone <pavone@retrodev.com>
parents:
558
diff
changeset
|
1108 #ifndef NO_Z80 |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
1109 gen->z80->native_pc = z80_get_native_address_trans(gen->z80, gen->z80->pc); |
548
a3afee2271ce
Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1110 #endif |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1111 start_68k_context(&context, pc); |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1112 } else { |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1113 if (debugger) { |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1114 insert_breakpoint(&context, address, debugger); |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1115 } |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1116 m68k_reset(&context); |
211 | 1117 } |
1118 } | |
1119 | |
340
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1120 char title[64]; |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1121 |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1122 #define TITLE_START 0x150 |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1123 #define TITLE_END (TITLE_START+48) |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1124 |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1125 void update_title() |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1126 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1127 uint16_t *last = cart + TITLE_END/2 - 1; |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1128 while(last > cart + TITLE_START/2 && *last == 0x2020) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1129 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1130 last--; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1131 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1132 uint16_t *start = cart + TITLE_START/2; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1133 char *cur = title; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1134 char last_char = ' '; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1135 for (; start != last; start++) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1136 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1137 if ((last_char != ' ' || (*start >> 8) != ' ') && (*start >> 8) < 0x80) { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1138 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1139 last_char = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1140 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1141 if (last_char != ' ' || (*start & 0xFF) != ' ' && (*start & 0xFF) < 0x80) { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1142 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1143 last_char = *start & 0xFF; |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1144 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1145 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1146 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1147 if ((*start & 0xFF) != ' ') { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1148 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1149 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1150 strcpy(cur, " - BlastEm"); |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1151 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1152 |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1153 #define REGION_START 0x1F0 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1154 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1155 int detect_specific_region(char region) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1156 { |
346
aff29d50afd5
Fix a region detection bug
Mike Pavone <pavone@retrodev.com>
parents:
345
diff
changeset
|
1157 return (cart[REGION_START/2] & 0xFF) == region || (cart[REGION_START/2] >> 8) == region || (cart[REGION_START/2+1] & 0xFF) == region; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1158 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1159 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1160 void detect_region() |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1161 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1162 if (detect_specific_region('U')|| detect_specific_region('B') || detect_specific_region('4')) { |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1163 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1164 } else if (detect_specific_region('J')) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1165 version_reg = NO_DISK | JAP; |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1166 } else if (detect_specific_region('E') || detect_specific_region('A')) { |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1167 version_reg = NO_DISK | EUR; |
434
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1168 } else { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1169 char * def_region = tern_find_ptr(config, "default_region"); |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1170 if (def_region) { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1171 switch(*def_region) |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1172 { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1173 case 'j': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1174 case 'J': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1175 version_reg = NO_DISK | JAP; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1176 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1177 case 'u': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1178 case 'U': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1179 version_reg = NO_DISK | USA; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1180 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1181 case 'e': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1182 case 'E': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1183 version_reg = NO_DISK | EUR; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1184 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1185 } |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1186 } |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1187 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1188 } |
590
ea80559c67cb
WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents:
570
diff
changeset
|
1189 #ifndef NO_Z80 |
ea80559c67cb
WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents:
570
diff
changeset
|
1190 const memmap_chunk z80_map[] = { |
660
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
1191 { 0x0000, 0x4000, 0x1FFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, z80_ram, NULL, NULL, NULL, NULL }, |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
1192 { 0x8000, 0x10000, 0x7FFF, 0, 0, NULL, NULL, NULL, z80_read_bank, z80_write_bank}, |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
1193 { 0x4000, 0x6000, 0x0003, 0, 0, NULL, NULL, NULL, z80_read_ym, z80_write_ym}, |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
1194 { 0x6000, 0x6100, 0xFFFF, 0, 0, NULL, NULL, NULL, NULL, z80_write_bank_reg}, |
e7cae6d9aaa6
Add the 3 cycle delay back in to Z80 bank area access
Michael Pavone <pavone@retrodev.com>
parents:
659
diff
changeset
|
1195 { 0x7F00, 0x8000, 0x00FF, 0, 0, NULL, NULL, NULL, z80_vdp_port_read, z80_vdp_port_write} |
590
ea80559c67cb
WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents:
570
diff
changeset
|
1196 }; |
ea80559c67cb
WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents:
570
diff
changeset
|
1197 #endif |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1198 |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1199 int main(int argc, char ** argv) |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1200 { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1201 if (argc < 2) { |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1202 fputs("Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n", stderr); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1203 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1204 } |
496
6fc71114d145
Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents:
488
diff
changeset
|
1205 set_exe_str(argv[0]); |
6fc71114d145
Extract function to determine executable directory from load_config so it can be used elsewhere
Mike Pavone <pavone@retrodev.com>
parents:
488
diff
changeset
|
1206 config = load_config(); |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1207 detect_region(); |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1208 int width = -1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1209 int height = -1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1210 int debug = 0; |
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1211 int ym_log = 0; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1212 int loaded = 0; |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1213 uint8_t force_version = 0; |
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1214 char * romfname = NULL; |
197
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1215 FILE *address_log = NULL; |
425
8b3ae850d1c4
Forgot to null initialize the statfile pointer
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
1216 char * statefile = NULL; |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1217 uint8_t * debuggerfun = NULL; |
501
e1355aa80f4d
Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents:
496
diff
changeset
|
1218 uint8_t fullscreen = 0, use_gl = 1; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1219 for (int i = 1; i < argc; i++) { |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1220 if (argv[i][0] == '-') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1221 switch(argv[i][1]) { |
505
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1222 case 'b': |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1223 i++; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1224 if (i >= argc) { |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1225 fputs("-b must be followed by a frame count\n", stderr); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1226 return 1; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1227 } |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1228 headless = 1; |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1229 exit_after = atoi(argv[i]); |
b7b7a1cab44a
The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
1230 break; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1231 case 'd': |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1232 debuggerfun = (uint8_t *)debugger; |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1233 break; |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1234 case 'D': |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1235 gdb_remote_init(); |
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1236 debuggerfun = (uint8_t *)gdb_debug_enter; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1237 break; |
338
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents:
336
diff
changeset
|
1238 case 'f': |
444
cc754a309ead
Add fullscreen support and add a keybinding for exiting the emulator
Mike Pavone <pavone@retrodev.com>
parents:
434
diff
changeset
|
1239 fullscreen = 1; |
338
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
Mike Pavone <pavone@retrodev.com>
parents:
336
diff
changeset
|
1240 break; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1241 case 'g': |
501
e1355aa80f4d
Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents:
496
diff
changeset
|
1242 use_gl = 0; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1243 break; |
197
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1244 case 'l': |
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1245 address_log = fopen("address.log", "w"); |
7c227a8ec53d
Add instruction address logging to translator and support for reading an address log to the disassembler
Mike Pavone <pavone@retrodev.com>
parents:
195
diff
changeset
|
1246 break; |
464 | 1247 case 'v': |
1248 printf("blastem %s\n", BLASTEM_VERSION); | |
1249 return 0; | |
1250 break; | |
265
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1251 case 'n': |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1252 z80_enabled = 0; |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1253 break; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1254 case 'r': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1255 i++; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1256 if (i >= argc) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1257 fputs("-r must be followed by region (J, U or E)\n", stderr); |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1258 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1259 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1260 switch (argv[i][0]) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1261 { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1262 case 'j': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1263 case 'J': |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1264 force_version = NO_DISK | JAP; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1265 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1266 case 'u': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1267 case 'U': |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1268 force_version = NO_DISK | USA; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1269 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1270 case 'e': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1271 case 'E': |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1272 force_version = NO_DISK | EUR; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1273 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1274 default: |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1275 fprintf(stderr, "'%c' is not a valid region character for the -r option\n", argv[i][0]); |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1276 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1277 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1278 break; |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1279 case 's': |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1280 i++; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1281 if (i >= argc) { |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1282 fputs("-s must be followed by a savestate filename\n", stderr); |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1283 return 1; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1284 } |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1285 statefile = argv[i]; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1286 break; |
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1287 case 'y': |
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1288 ym_log = 1; |
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1289 break; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1290 case 'h': |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1291 puts( |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1292 "Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1293 "Options:\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1294 " -h Print this help text\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1295 " -r (J|U|E) Force region to Japan, US or Europe respectively\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1296 " -f Start in fullscreen mode\n" |
501
e1355aa80f4d
Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents:
496
diff
changeset
|
1297 " -g Disable OpenGL rendering\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1298 " -s FILE Load a GST format savestate from FILE\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1299 " -d Enter debugger on startup\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1300 " -n Disable Z80\n" |
501
e1355aa80f4d
Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents:
496
diff
changeset
|
1301 " -v Display version number and exit\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1302 " -l Log 68K code addresses (useful for assemblers)\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1303 " -y Log individual YM-2612 channels to WAVE files\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1304 ); |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1305 return 0; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1306 default: |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1307 fprintf(stderr, "Unrecognized switch %s\n", argv[i]); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1308 return 1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1309 } |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1310 } else if (!loaded) { |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1311 if(!load_rom(argv[i])) { |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1312 fprintf(stderr, "Failed to open %s for reading\n", argv[i]); |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1313 return 1; |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1314 } |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1315 romfname = argv[i]; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1316 loaded = 1; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1317 } else if (width < 0) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1318 width = atoi(argv[i]); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1319 } else if (height < 0) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1320 height = atoi(argv[i]); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1321 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1322 } |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1323 if (!loaded) { |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1324 fputs("You must specify a ROM filename!\n", stderr); |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1325 return 1; |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1326 } |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1327 if (force_version) { |
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1328 version_reg = force_version; |
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1329 } |
340
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1330 update_title(); |
433
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1331 int def_width = 0; |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1332 char *config_width = tern_find_ptr(config, "videowidth"); |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1333 if (config_width) { |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1334 def_width = atoi(config_width); |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1335 } |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1336 if (!def_width) { |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1337 def_width = 640; |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1338 } |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1339 width = width < 320 ? def_width : width; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1340 height = height < 240 ? (width/320) * 240 : height; |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1341 uint32_t fps = 60; |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1342 if (version_reg & 0x40) { |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1343 fps = 50; |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1344 } |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1345 if (!headless) { |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1346 render_init(width, height, title, fps, fullscreen, use_gl); |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1347 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1348 vdp_context v_context; |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
1349 genesis_context gen; |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
1350 memset(&gen, 0, sizeof(gen)); |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
1351 gen.master_clock = gen.normal_clock = fps == 60 ? MCLKS_NTSC : MCLKS_PAL; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1352 |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1353 init_vdp_context(&v_context, version_reg & 0x40); |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1354 mclk_target = vdp_cycles_to_frame_end(&v_context); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1355 |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1356 ym2612_context y_context; |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
1357 ym_init(&y_context, render_sample_rate(), gen.master_clock, MCLKS_PER_YM, render_audio_buffer(), ym_log ? YM_OPT_WAVE_LOG : 0); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1358 |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1359 psg_context p_context; |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
Mike Pavone <pavone@retrodev.com>
parents:
482
diff
changeset
|
1360 psg_init(&p_context, render_sample_rate(), gen.master_clock, MCLKS_PER_PSG, render_audio_buffer()); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1361 |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1362 z80_context z_context; |
565
9324f721efa6
Add a separate flag/define for disabling the Z80 at compile time to ease refactoring
Michael Pavone <pavone@retrodev.com>
parents:
558
diff
changeset
|
1363 #ifndef NO_Z80 |
590
ea80559c67cb
WIP effort to update z80 core for code gen changes
Michael Pavone <pavone@retrodev.com>
parents:
570
diff
changeset
|
1364 z80_options z_opts; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
1365 init_z80_opts(&z_opts, z80_map, 5, MCLKS_PER_Z80); |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1366 init_z80_context(&z_context, &z_opts); |
548
a3afee2271ce
Initial work on the x86-32 target
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1367 #endif |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1368 |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1369 z_context.system = &gen; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1370 z_context.mem_pointers[0] = z80_ram; |
667
30ccf56842d6
All cycle counters are now based off the master clock. This seems to have messed up Z80 interrupt timing (music in Sonic 2 is too slow for instance), but things are generally working
Michael Pavone <pavone@retrodev.com>
parents:
661
diff
changeset
|
1371 z_context.sync_cycle = z_context.target_cycle = mclk_target; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1372 z_context.int_cycle = CYCLE_NEVER; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1373 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1374 |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1375 gen.z80 = &z_context; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1376 gen.vdp = &v_context; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
1377 gen.ym = &y_context; |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1378 gen.psg = &p_context; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1379 genesis = &gen; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1380 |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1381 int fname_size = strlen(romfname); |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1382 sram_filename = malloc(fname_size+6); |
469
5f3344d0d42f
Fix argument handling so that the rom filename does not need to be specified first
Mike Pavone <pavone@retrodev.com>
parents:
467
diff
changeset
|
1383 memcpy(sram_filename, romfname, fname_size); |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1384 int i; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1385 for (i = fname_size-1; fname_size >= 0; --i) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1386 if (sram_filename[i] == '.') { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1387 strcpy(sram_filename + i + 1, "sram"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1388 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1389 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1390 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1391 if (i < 0) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1392 strcpy(sram_filename + fname_size, ".sram"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1393 } |
645
d77c79cec800
Initial support for configurable IO, custom IO and sega transfer board emulation
Michael Pavone <pavone@retrodev.com>
parents:
628
diff
changeset
|
1394 set_keybindings(gen.ports); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1395 |
515
1495179d6737
Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
Mike Pavone <pavone@retrodev.com>
parents:
510
diff
changeset
|
1396 init_run_cpu(&gen, address_log, statefile, debuggerfun); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1397 return 0; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1398 } |