Mercurial > repos > blastem
annotate blastem.c @ 623:66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
author | Michael Pavone <pavone@retrodev.com> |
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date | Wed, 18 Jun 2014 16:30:19 -0700 |
parents | c641006da28e |
children | 6aa2a8ab9c70 |
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. |
467
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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_to_x86.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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Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work.
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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 |
260
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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 //TODO: Make these dependent on the video mode |
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129 //#define VINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_68K) |
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130 #define ZVINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_Z80) |
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131 //#define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_68K) |
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132 //#define ZVINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_Z80) |
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133 |
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134 void adjust_int_cycle(m68k_context * context, vdp_context * v_context) |
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135 { |
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136 context->int_cycle = CYCLE_NEVER; |
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137 if ((context->status & 0x7) < 6) { |
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138 uint32_t next_vint = vdp_next_vint(v_context); |
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139 if (next_vint != CYCLE_NEVER) { |
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140 next_vint /= MCLKS_PER_68K; |
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141 context->int_cycle = next_vint; |
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142 context->int_num = 6; |
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143 } |
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144 if ((context->status & 0x7) < 4) { |
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145 uint32_t next_hint = vdp_next_hint(v_context); |
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146 if (next_hint != CYCLE_NEVER) { |
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147 next_hint /= MCLKS_PER_68K; |
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148 if (next_hint < context->int_cycle) { |
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149 context->int_cycle = next_hint; |
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150 context->int_num = 4; |
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151 |
317
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152 } |
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153 } |
186
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154 } |
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155 } |
317
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156 |
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157 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle; |
488
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158 /*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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159 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7), |
317
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160 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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161 } |
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162 |
198
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163 int break_on_sync = 0; |
451
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164 int save_state = 0; |
260
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165 |
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166 uint8_t reset = 1; |
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167 uint8_t need_reset = 0; |
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168 uint8_t busreq = 0; |
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169 uint8_t busack = 0; |
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170 uint32_t busack_cycle = CYCLE_NEVER; |
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171 uint8_t new_busack = 0; |
280 | 172 //#define DO_DEBUG_PRINT |
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173 #ifdef DO_DEBUG_PRINT |
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174 #define dprintf printf |
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175 #define dputs puts |
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176 #else |
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177 #define dprintf |
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178 #define dputs |
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179 #endif |
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180 |
402
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181 #define Z80_VINT_DURATION 128 |
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182 |
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183 void sync_z80(z80_context * z_context, uint32_t mclks) |
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184 { |
265
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185 if (z80_enabled && !reset && !busreq) { |
333 | 186 genesis_context * gen = z_context->system; |
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187 z_context->sync_cycle = mclks / MCLKS_PER_Z80; |
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188 if (z_context->current_cycle < z_context->sync_cycle) { |
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189 if (need_reset) { |
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190 z80_reset(z_context); |
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191 need_reset = 0; |
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192 } |
505
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193 uint32_t vint_cycle = vdp_next_vint_z80(gen->vdp) / MCLKS_PER_Z80; |
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194 while (z_context->current_cycle < z_context->sync_cycle) { |
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195 if (z_context->iff1 && z_context->current_cycle < (vint_cycle + Z80_VINT_DURATION)) { |
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196 z_context->int_cycle = vint_cycle < z_context->int_enable_cycle ? z_context->int_enable_cycle : vint_cycle; |
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197 } |
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198 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle; |
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199 dprintf("Running Z80 from cycle %d to cycle %d. Native PC: %p\n", z_context->current_cycle, z_context->sync_cycle, z_context->native_pc); |
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200 z80_run(z_context); |
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201 dprintf("Z80 ran to cycle %d\n", z_context->current_cycle); |
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202 } |
260
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203 } |
289
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204 } else { |
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205 z_context->current_cycle = mclks / MCLKS_PER_Z80; |
260
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206 } |
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207 } |
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208 |
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209 void sync_sound(genesis_context * gen, uint32_t target) |
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210 { |
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211 //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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212 while (target > gen->psg->cycles && target - gen->psg->cycles > MAX_SOUND_CYCLES) { |
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213 uint32_t cur_target = gen->psg->cycles + MAX_SOUND_CYCLES; |
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214 //printf("Running PSG to cycle %d\n", cur_target); |
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215 psg_run(gen->psg, cur_target); |
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216 //printf("Running YM-2612 to cycle %d\n", cur_target); |
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217 ym_run(gen->ym, cur_target); |
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218 } |
380
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219 psg_run(gen->psg, target); |
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220 ym_run(gen->ym, target); |
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221 |
380
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222 //printf("Target: %d, YM bufferpos: %d, PSG bufferpos: %d\n", target, gen->ym->buffer_pos, gen->psg->buffer_pos * 2); |
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223 } |
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224 |
321
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225 uint32_t frame=0; |
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226 m68k_context * sync_components(m68k_context * context, uint32_t address) |
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227 { |
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228 //TODO: Handle sync targets smaller than a single frame |
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229 genesis_context * gen = context->system; |
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230 vdp_context * v_context = gen->vdp; |
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231 z80_context * z_context = gen->z80; |
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232 uint32_t mclks = context->current_cycle * MCLKS_PER_68K; |
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233 sync_z80(z_context, mclks); |
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234 if (mclks >= mclk_target) { |
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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diff
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|
235 sync_sound(gen, mclks); |
623
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Fix most of the breakage caused by the vcounter/hcounter changes
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diff
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|
236 gen->ym->current_cycle -= mclk_target; |
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diff
changeset
|
237 gen->psg->cycles -= mclk_target; |
374 | 238 if (gen->ym->write_cycle != CYCLE_NEVER) { |
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
changeset
|
239 gen->ym->write_cycle = gen->ym->write_cycle >= mclk_target/MCLKS_PER_68K ? gen->ym->write_cycle - mclk_target/MCLKS_PER_68K : 0; |
374 | 240 } |
453
b491df8bdbc0
Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements.
Mike Pavone <pavone@retrodev.com>
parents:
452
diff
changeset
|
241 //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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parents:
534
diff
changeset
|
242 vdp_run_context(v_context, mclk_target); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
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487
diff
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|
243 |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
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211
diff
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|
244 if (!headless) { |
338
5c34a9c39394
Re-enable frame limit, but add a command line flag to disable it
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336
diff
changeset
|
245 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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parents:
501
diff
changeset
|
246 } 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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parents:
501
diff
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247 --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.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
248 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:
501
diff
changeset
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249 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.
Michael Pavone <pavone@retrodev.com>
parents:
501
diff
changeset
|
250 } |
215
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
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211
diff
changeset
|
251 } |
321
146c87616b05
Don't update interrupt mask on non-interrupt exceptions
Mike Pavone <pavone@retrodev.com>
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317
diff
changeset
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252 frame++; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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diff
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253 mclks -= mclk_target; |
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diff
changeset
|
254 vdp_adjust_cycles(v_context, mclk_target); |
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255 io_adjust_cycles(gen->ports, context->current_cycle, mclk_target/MCLKS_PER_68K); |
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Fix most of the breakage caused by the vcounter/hcounter changes
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diff
changeset
|
256 io_adjust_cycles(gen->ports+1, context->current_cycle, mclk_target/MCLKS_PER_68K); |
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Fix most of the breakage caused by the vcounter/hcounter changes
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diff
changeset
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257 io_adjust_cycles(gen->ports+2, context->current_cycle, mclk_target/MCLKS_PER_68K); |
344
b46771135442
Handle busack across frame boundary
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343
diff
changeset
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258 if (busack_cycle != CYCLE_NEVER) { |
623
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534
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259 if (busack_cycle > mclk_target/MCLKS_PER_68K) { |
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diff
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260 busack_cycle -= mclk_target/MCLKS_PER_68K; |
344
b46771135442
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343
diff
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261 } else { |
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343
diff
changeset
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262 busack_cycle = CYCLE_NEVER; |
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343
diff
changeset
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263 busack = new_busack; |
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343
diff
changeset
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264 } |
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parents:
343
diff
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265 } |
623
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parents:
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diff
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266 context->current_cycle -= mclk_target/MCLKS_PER_68K; |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
534
diff
changeset
|
267 if (z_context->current_cycle >= mclk_target/MCLKS_PER_Z80) { |
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parents:
534
diff
changeset
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268 z_context->current_cycle -= mclk_target/MCLKS_PER_Z80; |
260
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Initial stab at integartiong Z80 core
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changeset
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269 } else { |
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Initial stab at integartiong Z80 core
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215
diff
changeset
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270 z_context->current_cycle = 0; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
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diff
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271 } |
88
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parents:
diff
changeset
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272 if (mclks) { |
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parents:
diff
changeset
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273 vdp_run_context(v_context, mclks); |
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diff
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274 } |
623
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parents:
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diff
changeset
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275 mclk_target = vdp_cycles_to_frame_end(v_context); |
88
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276 } else { |
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diff
changeset
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277 //printf("running VDP for %d cycles\n", mclks - v_context->cycles); |
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parents:
diff
changeset
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278 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.
Mike Pavone <pavone@retrodev.com>
parents:
374
diff
changeset
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279 sync_sound(gen, mclks); |
88
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parents:
diff
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280 } |
317
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
290
diff
changeset
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281 if (context->int_ack) { |
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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parents:
290
diff
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282 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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parents:
290
diff
changeset
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283 context->int_ack = 0; |
e5e8b48ad157
Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port.
Mike Pavone <pavone@retrodev.com>
parents:
290
diff
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284 } |
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
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285 adjust_int_cycle(context, v_context); |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
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286 if (address) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
287 if (break_on_sync) { |
198
209a37eed3e7
Add support for breaking into the debugger while game is running
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parents:
197
diff
changeset
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288 break_on_sync = 0; |
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Add support for breaking into the debugger while game is running
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diff
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289 debugger(context, address); |
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Add support for breaking into the debugger while game is running
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parents:
197
diff
changeset
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290 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
changeset
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291 if (save_state) { |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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447
diff
changeset
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292 save_state = 0; |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
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diff
changeset
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293 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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diff
changeset
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294 { |
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Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
changeset
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295 sync_z80(z_context, z_context->current_cycle * MCLKS_PER_Z80 + MCLKS_PER_Z80); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
changeset
|
296 } |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
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297 save_gst(gen, "savestate.gst", address); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
298 } |
198
209a37eed3e7
Add support for breaking into the debugger while game is running
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parents:
197
diff
changeset
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299 } |
88
c339559f1d4f
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parents:
diff
changeset
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300 return context; |
c339559f1d4f
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parents:
diff
changeset
|
301 } |
c339559f1d4f
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parents:
diff
changeset
|
302 |
c339559f1d4f
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parents:
diff
changeset
|
303 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
304 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
305 if (vdp_port & 0x2700E0) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
306 printf("machine freeze due to write to address %X\n", 0xC00000 | vdp_port); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
307 exit(1); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
308 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
309 vdp_port &= 0x1F; |
88
c339559f1d4f
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parents:
diff
changeset
|
310 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); |
198
209a37eed3e7
Add support for breaking into the debugger while game is running
Mike Pavone <pavone@retrodev.com>
parents:
197
diff
changeset
|
311 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
|
312 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.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
313 genesis_context * gen = context->system; |
88
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
314 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
changeset
|
315 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.
Mike Pavone <pavone@retrodev.com>
parents:
344
diff
changeset
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316 uint32_t before_cycle = v_context->cycles; |
88
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parents:
diff
changeset
|
317 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.
Michael Pavone <pavone@retrodev.com>
parents:
505
diff
changeset
|
318 gen->bus_busy = 1; |
149
139e5dcd6aa3
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parents:
144
diff
changeset
|
319 while (vdp_data_port_write(v_context, value) < 0) { |
88
c339559f1d4f
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parents:
diff
changeset
|
320 while(v_context->flags & FLAG_DMA_RUN) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
534
diff
changeset
|
321 vdp_run_dma_done(v_context, mclk_target); |
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
534
diff
changeset
|
322 if (v_context->cycles >= mclk_target) { |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents:
531
diff
changeset
|
323 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
534
diff
changeset
|
324 if (context->current_cycle * MCLKS_PER_68K < mclk_target) { |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
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parents:
531
diff
changeset
|
325 ++context->current_cycle; |
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
|
326 } |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
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parents:
531
diff
changeset
|
327 sync_components(context, 0); |
88
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parents:
diff
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|
328 } |
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parents:
diff
changeset
|
329 } |
450
3758bcdae5de
Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
330 //context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
149
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Make writes to control and data port block when DMA is in progress
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parents:
144
diff
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331 } |
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Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
332 } 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
|
333 gen->bus_busy = 1; |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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parents:
144
diff
changeset
|
334 blocked = vdp_control_port_write(v_context, value); |
139e5dcd6aa3
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parents:
144
diff
changeset
|
335 if (blocked) { |
139e5dcd6aa3
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parents:
144
diff
changeset
|
336 while (blocked) { |
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Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
337 while(v_context->flags & FLAG_DMA_RUN) { |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
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parents:
534
diff
changeset
|
338 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
|
339 if (v_context->cycles >= mclk_target) { |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents:
531
diff
changeset
|
340 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
341 if (context->current_cycle * MCLKS_PER_68K < mclk_target) { |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
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parents:
531
diff
changeset
|
342 ++context->current_cycle; |
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
|
343 } |
534
c641006da28e
Properly sync hardware when frame end is reached during DMA
Mike Pavone <pavone@retrodev.com>
parents:
531
diff
changeset
|
344 sync_components(context, 0); |
149
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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parents:
144
diff
changeset
|
345 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
346 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
347 if (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
|
348 blocked = vdp_control_port_write(v_context, value); |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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parents:
144
diff
changeset
|
349 } else { |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
350 blocked = 0; |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
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parents:
144
diff
changeset
|
351 } |
139e5dcd6aa3
Make writes to control and data port block when DMA is in progress
Mike Pavone <pavone@retrodev.com>
parents:
144
diff
changeset
|
352 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
353 } 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
|
354 adjust_int_cycle(context, v_context); |
88
c339559f1d4f
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Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
355 } |
c339559f1d4f
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parents:
diff
changeset
|
356 } else { |
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parents:
diff
changeset
|
357 printf("Illegal write to HV Counter port %X\n", vdp_port); |
c339559f1d4f
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diff
changeset
|
358 exit(1); |
c339559f1d4f
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parents:
diff
changeset
|
359 } |
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
|
360 if (v_context->cycles != before_cycle) { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
361 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for write\n", v_context->cycles / MCLKS_PER_68K - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle); |
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
|
362 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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
|
363 } |
88
c339559f1d4f
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parents:
diff
changeset
|
364 } else if (vdp_port < 0x18) { |
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.
Mike Pavone <pavone@retrodev.com>
parents:
374
diff
changeset
|
365 sync_sound(gen, context->current_cycle * MCLKS_PER_68K); |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
366 psg_write(gen->psg, value); |
88
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diff
changeset
|
367 } else { |
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diff
changeset
|
368 //TODO: Implement undocumented test register(s) |
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
369 } |
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
|
370 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
|
371 { |
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
|
372 //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
|
373 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
|
374 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
|
375 } |
88
c339559f1d4f
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parents:
diff
changeset
|
376 return context; |
c339559f1d4f
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parents:
diff
changeset
|
377 } |
c339559f1d4f
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parents:
diff
changeset
|
378 |
343
467bfa17004a
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parents:
342
diff
changeset
|
379 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
|
380 { |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
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parents:
356
diff
changeset
|
381 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
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parents:
356
diff
changeset
|
382 } |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
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parents:
356
diff
changeset
|
383 |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
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parents:
356
diff
changeset
|
384 z80_context * z80_vdp_port_write(uint16_t vdp_port, z80_context * context, uint8_t value) |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
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parents:
356
diff
changeset
|
385 { |
fa7ea48be9a9
Allow VDP/PSG writes from Z80
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parents:
356
diff
changeset
|
386 genesis_context * gen = context->system; |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
387 if (vdp_port & 0xE0) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
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parents:
357
diff
changeset
|
388 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
|
389 exit(1); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
390 } |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
391 if (vdp_port < 0x10) { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
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parents:
357
diff
changeset
|
392 //These probably won't currently interact well with the 68K accessing the VDP |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
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parents:
357
diff
changeset
|
393 vdp_run_context(gen->vdp, context->current_cycle * MCLKS_PER_Z80); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
394 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
|
395 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
|
396 } 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
|
397 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
|
398 } else { |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
399 printf("Illegal write to HV Counter port %X\n", vdp_port); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
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parents:
357
diff
changeset
|
400 exit(1); |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
401 } |
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
402 } else if (vdp_port < 0x18) { |
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.
Mike Pavone <pavone@retrodev.com>
parents:
374
diff
changeset
|
403 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80); |
358
9498cfa7f7c8
Make Z80 writes to VDP/PSG not potentially crash the emulator
Mike Pavone <pavone@retrodev.com>
parents:
357
diff
changeset
|
404 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
|
405 } 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
|
406 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
|
407 } |
357
fa7ea48be9a9
Allow VDP/PSG writes from Z80
Mike Pavone <pavone@retrodev.com>
parents:
356
diff
changeset
|
408 return context; |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
409 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
410 |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
411 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
|
412 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
413 if (vdp_port & 0x2700E0) { |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
414 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
|
415 exit(1); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
416 } |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
417 vdp_port &= 0x1F; |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
418 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
|
419 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
|
420 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
|
421 uint32_t before_cycle = v_context->cycles; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
422 if (vdp_port < 0x10) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
423 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
|
424 value = vdp_data_port_read(v_context); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
425 } 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
|
426 value = vdp_control_port_read(v_context); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
427 } else { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
428 value = vdp_hv_counter_read(v_context); |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
429 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
430 } |
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
|
431 } else if (vdp_port < 0x18){ |
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
|
432 printf("Illegal read from PSG port %X\n", vdp_port); |
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
|
433 exit(1); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
434 } 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
|
435 value = vdp_test_port_read(v_context); |
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 } |
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
|
437 if (v_context->cycles != before_cycle) { |
471
f065769836e8
Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly
Mike Pavone <pavone@retrodev.com>
parents:
470
diff
changeset
|
438 //printf("68K paused for %d (%d) cycles at cycle %d (%d) for read\n", v_context->cycles / MCLKS_PER_68K - context->current_cycle, v_context->cycles - before_cycle, context->current_cycle, before_cycle); |
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
|
439 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
440 } |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
441 return value; |
467bfa17004a
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442 } |
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443 |
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444 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context) |
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445 { |
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446 uint16_t value = vdp_port_read(vdp_port, context); |
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447 if (vdp_port & 1) { |
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448 return value; |
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449 } else { |
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450 return value >> 8; |
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451 } |
88
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452 } |
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453 |
279
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454 uint32_t zram_counter = 0; |
289
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455 #define Z80_ACK_DELAY 3 |
336
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456 #define Z80_BUSY_DELAY 1//TODO: Find the actual value for this |
289
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457 #define Z80_REQ_BUSY 1 |
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458 #define Z80_REQ_ACK 0 |
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459 #define Z80_RES_BUSACK reset |
279
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460 |
88
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461 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value) |
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462 { |
288
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463 genesis_context * gen = context->system; |
153
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464 if (location < 0x10000) { |
336
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465 if (busack_cycle <= context->current_cycle) { |
153
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466 busack = new_busack; |
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467 busack_cycle = CYCLE_NEVER; |
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468 } |
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469 if (!(busack || reset)) { |
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470 location &= 0x7FFF; |
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471 if (location < 0x4000) { |
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472 z80_ram[location & 0x1FFF] = value; |
288
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473 z80_handle_code_write(location & 0x1FFF, gen->z80); |
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474 } else if (location < 0x6000) { |
380
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475 sync_sound(gen, context->current_cycle * MCLKS_PER_68K); |
288
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476 if (location & 1) { |
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477 ym_data_write(gen->ym, value); |
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478 } else if(location & 2) { |
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479 ym_address_write_part2(gen->ym, value); |
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480 } else { |
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481 ym_address_write_part1(gen->ym, value); |
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482 } |
405
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483 } else if (location == 0x6000) { |
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484 gen->z80->bank_reg = (gen->z80->bank_reg >> 1 | value << 8) & 0x1FF; |
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485 if (gen->z80->bank_reg < 0x80) { |
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486 gen->z80->mem_pointers[1] = (gen->z80->bank_reg << 15) + ((char *)gen->z80->mem_pointers[2]); |
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487 } else { |
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488 gen->z80->mem_pointers[1] = NULL; |
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489 } |
395
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490 } else { |
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491 printf("68K write to unhandled Z80 address %X\n", location); |
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492 exit(1); |
153
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493 } |
88
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494 } |
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495 } else { |
153
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496 location &= 0x1FFF; |
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497 if (location < 0x100) { |
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498 switch(location/2) |
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499 { |
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500 case 0x1: |
421
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501 io_data_write(gen->ports, value, context->current_cycle); |
153
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502 break; |
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503 case 0x2: |
421
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504 io_data_write(gen->ports+1, value, context->current_cycle); |
153
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505 break; |
421
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506 case 0x3: |
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507 io_data_write(gen->ports+2, value, context->current_cycle); |
153
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|
508 break; |
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|
509 case 0x4: |
421
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|
510 gen->ports[0].control = value; |
153
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|
511 break; |
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|
512 case 0x5: |
421
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diff
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|
513 gen->ports[1].control = value; |
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diff
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|
514 break; |
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|
515 case 0x6: |
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diff
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|
516 gen->ports[2].control = value; |
153
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|
517 break; |
88
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|
518 } |
153
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|
519 } else { |
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|
520 if (location == 0x1100) { |
336
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|
521 if (busack_cycle <= context->current_cycle) { |
153
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diff
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|
522 busack = new_busack; |
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|
523 busack_cycle = CYCLE_NEVER; |
88
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|
524 } |
153
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|
525 if (value & 1) { |
271
969ee17471c5
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|
526 dputs("bus requesting Z80"); |
488
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487
diff
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|
527 |
336
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diff
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|
528 if(!reset && !busreq) { |
482
4b24260125f3
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471
diff
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|
529 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K + Z80_ACK_DELAY*MCLKS_PER_Z80); |
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471
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|
530 busack_cycle = (gen->z80->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
289
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|
531 new_busack = Z80_REQ_ACK; |
153
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|
532 } |
364
62177cc39049
Incredibly broken YM2612 support plus a fix to Z80 bus request
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362
diff
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|
533 busreq = 1; |
153
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|
534 } else { |
482
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471
diff
changeset
|
535 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
260
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Initial stab at integartiong Z80 core
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215
diff
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|
536 if (busreq) { |
271
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268
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|
537 dputs("releasing z80 bus"); |
280 | 538 #ifdef DO_DEBUG_PRINT |
279
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276
diff
changeset
|
539 char fname[20]; |
6be6056735a9
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276
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|
540 sprintf(fname, "zram-%d", zram_counter++); |
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276
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|
541 FILE * f = fopen(fname, "wb"); |
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|
542 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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|
543 fclose(f); |
280 | 544 #endif |
336
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diff
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|
545 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K; |
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diff
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|
546 new_busack = Z80_REQ_BUSY; |
87b65e5ce1ab
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diff
changeset
|
547 busreq = 0; |
260
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Initial stab at integartiong Z80 core
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215
diff
changeset
|
548 } |
289
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288
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changeset
|
549 //busack_cycle = CYCLE_NEVER; |
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|
550 //busack = Z80_REQ_BUSY; |
488
32f053ad9b02
Basic OpenGL rendering is working
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parents:
487
diff
changeset
|
551 |
88
c339559f1d4f
Forgot to add blastem main file earlier
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parents:
diff
changeset
|
552 } |
153
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Implement access to Z80 RAM
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149
diff
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|
553 } else if (location == 0x1200) { |
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>
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280
diff
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|
554 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
153
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Implement access to Z80 RAM
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555 if (value & 1) { |
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556 if (reset && busreq) { |
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557 new_busack = 0; |
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558 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
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559 } |
260
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560 //TODO: Deal with the scenario in which reset is not asserted long enough |
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561 if (reset) { |
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562 need_reset = 1; |
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563 //TODO: Add necessary delay between release of reset and start of execution |
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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564 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80 + 16; |
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565 } |
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566 reset = 0; |
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567 } else { |
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568 reset = 1; |
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569 } |
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570 } |
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571 } |
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572 } |
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573 return context; |
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574 } |
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575 |
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576 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value) |
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577 { |
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578 if (location < 0x10000 || (location & 0x1FFF) >= 0x100) { |
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579 return io_write(location, context, value >> 8); |
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580 } else { |
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581 return io_write(location, context, value); |
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582 } |
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583 } |
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584 |
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585 #define USA 0x80 |
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586 #define JAP 0x00 |
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587 #define EUR 0xC0 |
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588 #define NO_DISK 0x20 |
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589 uint8_t version_reg = NO_DISK | USA; |
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590 |
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591 uint8_t io_read(uint32_t location, m68k_context * context) |
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592 { |
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593 uint8_t value; |
288
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594 genesis_context *gen = context->system; |
153
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595 if (location < 0x10000) { |
336
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596 if (busack_cycle <= context->current_cycle) { |
153
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597 busack = new_busack; |
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598 busack_cycle = CYCLE_NEVER; |
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599 } |
289
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600 if (!(busack==Z80_REQ_BUSY || reset)) { |
153
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601 location &= 0x7FFF; |
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602 if (location < 0x4000) { |
343
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603 value = z80_ram[location & 0x1FFF]; |
288
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604 } else if (location < 0x6000) { |
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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605 sync_sound(gen, context->current_cycle * MCLKS_PER_68K); |
343
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606 value = ym_read_status(gen->ym); |
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607 } else { |
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608 value = 0xFF; |
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609 } |
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610 } else { |
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611 value = 0xFF; |
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612 } |
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613 } else { |
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614 location &= 0x1FFF; |
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615 if (location < 0x100) { |
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616 switch(location/2) |
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617 { |
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618 case 0x0: |
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619 //version bits should be 0 for now since we're not emulating TMSS |
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620 value = version_reg; |
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621 break; |
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622 case 0x1: |
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623 value = io_data_read(gen->ports, context->current_cycle); |
343
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624 break; |
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625 case 0x2: |
421
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626 value = io_data_read(gen->ports+1, context->current_cycle); |
343
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627 break; |
421
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628 case 0x3: |
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629 value = io_data_read(gen->ports+2, context->current_cycle); |
343
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630 break; |
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631 case 0x4: |
421
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632 value = gen->ports[0].control; |
343
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633 break; |
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|
634 case 0x5: |
421
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|
635 value = gen->ports[1].control; |
343
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636 break; |
421
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637 case 0x6: |
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diff
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|
638 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
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parents:
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diff
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|
639 break; |
343
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|
640 default: |
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|
641 value = 0xFF; |
153
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642 } |
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643 } else { |
343
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644 if (location == 0x1100) { |
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645 if (busack_cycle <= context->current_cycle) { |
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646 busack = new_busack; |
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647 busack_cycle = CYCLE_NEVER; |
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|
648 } |
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649 value = Z80_RES_BUSACK || busack; |
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650 dprintf("Byte read of BUSREQ returned %d @ %d (reset: %d, busack: %d, busack_cycle %d)\n", value, context->current_cycle, reset, busack, busack_cycle); |
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651 } else if (location == 0x1200) { |
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652 value = !reset; |
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653 } else { |
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|
654 value = 0xFF; |
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655 printf("Byte read of unknown IO location: %X\n", location); |
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|
656 } |
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|
657 } |
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|
658 } |
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|
659 return value; |
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|
660 } |
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|
661 |
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662 uint16_t io_read_w(uint32_t location, m68k_context * context) |
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663 { |
404
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|
664 uint16_t value = io_read(location, context); |
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|
665 if (location < 0x10000 || (location & 0x1FFF) < 0x100) { |
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666 value = value | (value << 8); |
88
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|
667 } else { |
404
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diff
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|
668 value <<= 8; |
88
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|
669 } |
343
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|
670 return value; |
88
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|
671 } |
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|
672 |
290
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673 z80_context * z80_write_ym(uint16_t location, z80_context * context, uint8_t value) |
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674 { |
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675 genesis_context * gen = context->system; |
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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676 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80); |
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677 if (location & 1) { |
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678 ym_data_write(gen->ym, value); |
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679 } else if (location & 2) { |
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|
680 ym_address_write_part2(gen->ym, value); |
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681 } else { |
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|
682 ym_address_write_part1(gen->ym, value); |
171f97e70d85
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|
683 } |
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changeset
|
684 return context; |
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changeset
|
685 } |
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Implement writes from Z80 to YM-2612
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|
686 |
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687 uint8_t z80_read_ym(uint16_t location, z80_context * context) |
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688 { |
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Implement writes from Z80 to YM-2612
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|
689 genesis_context * gen = context->system; |
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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690 sync_sound(gen, context->current_cycle * MCLKS_PER_Z80); |
290
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691 return ym_read_status(gen->ym); |
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692 } |
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|
693 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
694 uint16_t read_sram_w(uint32_t address, m68k_context * context) |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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695 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
696 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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|
697 address &= gen->save_ram_mask; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
698 switch(gen->save_flags) |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
699 { |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
700 case RAM_FLAG_BOTH: |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
701 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.
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|
702 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
703 return gen->save_ram[address >> 1] << 8 | 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
704 case RAM_FLAG_ODD: |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
705 return gen->save_ram[address >> 1] | 0xFF00; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
706 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
707 return 0xFFFF;//We should never get here |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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708 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
709 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
710 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.
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|
711 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
712 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
713 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
714 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
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346
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changeset
|
715 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
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changeset
|
716 case RAM_FLAG_BOTH: |
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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|
717 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>
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346
diff
changeset
|
718 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
719 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
720 return 0xFF; |
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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|
721 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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changeset
|
722 return gen->save_ram[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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|
723 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
724 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
|
725 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
|
726 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
|
727 } 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
|
728 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
|
729 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
730 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
731 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
|
732 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
733 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
734 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
|
735 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
736 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
|
737 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
|
738 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
|
739 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
|
740 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
741 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
|
742 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
|
743 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
|
744 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
|
745 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
|
746 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
|
747 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
|
748 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
|
749 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
|
750 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
|
751 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
752 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
753 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
|
754 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
755 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
756 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
|
757 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
758 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
|
759 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
|
760 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
|
761 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
|
762 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
763 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
|
764 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
|
765 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
|
766 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
|
767 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
|
768 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
|
769 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
770 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
|
771 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
|
772 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
|
773 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
|
774 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
775 break; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
776 } |
2f264d2a60c2
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777 } |
2f264d2a60c2
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|
778 return context; |
2f264d2a60c2
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779 } |
2f264d2a60c2
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|
780 |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
781 m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16_t value) |
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782 { |
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783 genesis_context * gen = context->system; |
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|
784 address &= 0xE; |
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785 address >>= 1; |
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|
786 gen->bank_regs[address] = value; |
2f264d2a60c2
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787 if (!address) { |
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|
788 if (value & 1) { |
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|
789 context->mem_pointers[2] = NULL; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
790 } else { |
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|
791 context->mem_pointers[2] = cart + 0x200000/2; |
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changeset
|
792 } |
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|
793 } |
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|
794 return context; |
2f264d2a60c2
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|
795 } |
2f264d2a60c2
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|
796 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
797 m68k_context * write_bank_reg_b(uint32_t address, m68k_context * context, uint8_t value) |
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|
798 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
799 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
800 genesis_context * gen = context->system; |
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|
801 address &= 0xE; |
2f264d2a60c2
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|
802 address >>= 1; |
2f264d2a60c2
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|
803 gen->bank_regs[address] = value; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
804 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
805 if (value & 1) { |
2f264d2a60c2
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|
806 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
807 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
808 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
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809 } |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
810 } |
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|
811 } |
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|
812 return context; |
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|
813 } |
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|
814 |
483
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
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parents:
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|
815 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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|
816 { |
3e1573fa22cf
Implement turbo/slow motion feature that overclocks or underclocks the entire system at the push of a button
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diff
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|
817 uint32_t old_clock = context->master_clock; |
3e1573fa22cf
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|
818 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
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diff
changeset
|
819 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
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parents:
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diff
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|
820 sync_sound(context, context->psg->cycles + MCLKS_PER_PSG); |
424
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
821 } |
483
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
|
822 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
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parents:
482
diff
changeset
|
823 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
|
824 } |
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
|
825 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
826 #define ROM_END 0x1A4 |
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|
827 #define RAM_ID 0x1B0 |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
828 #define RAM_FLAGS 0x1B2 |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
829 #define RAM_START 0x1B4 |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
830 #define RAM_END 0x1B8 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
831 #define MAX_MAP_CHUNKS (4+7+1) |
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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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changeset
|
832 #define RAM_FLAG_MASK 0x1800 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
833 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
834 const memmap_chunk static_map[] = { |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
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diff
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|
835 {0, 0x400000, 0xFFFFFF, 0, MMAP_READ, cart, |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
836 NULL, NULL, NULL, NULL}, |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
837 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
838 NULL, NULL, NULL, NULL}, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
839 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
840 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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342
diff
changeset
|
841 (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
|
842 {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
|
843 (read_16_fun)io_read_w, (write_16_fun)io_write_w, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
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parents:
342
diff
changeset
|
844 (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
|
845 }; |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
846 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
847 char * sram_filename; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
848 genesis_context * genesis; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
849 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
|
850 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
851 FILE * f = fopen(sram_filename, "wb"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
852 if (!f) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
853 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.
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346
diff
changeset
|
854 return; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
855 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
856 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
|
857 if (genesis->save_flags != RAM_FLAG_BOTH) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
858 size/= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
859 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
860 fwrite(genesis->save_ram, 1, size, f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
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346
diff
changeset
|
861 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
862 printf("Saved SRAM to %s\n", sram_filename); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
863 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
864 |
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
|
865 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
|
866 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
867 m68k_context context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
868 x86_68k_options opts; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
869 gen->m68k = &context; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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changeset
|
870 memmap_chunk memmap[MAX_MAP_CHUNKS]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
871 uint32_t num_chunks; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
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changeset
|
872 void * initial_mapped = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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changeset
|
873 gen->save_ram = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
874 //TODO: Handle carts larger than 4MB |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
875 //TODO: Handle non-standard mappers |
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|
876 uint32_t size; |
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|
877 if ((cart[RAM_ID/2] & 0xFF) == 'A' && (cart[RAM_ID/2] >> 8) == 'R') { |
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|
878 //Cart has save RAM |
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|
879 uint32_t rom_end = ((cart[ROM_END/2] << 16) | cart[ROM_END/2+1]) + 1; |
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880 uint32_t ram_start = (cart[RAM_START/2] << 16) | cart[RAM_START/2+1]; |
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881 uint32_t ram_end = (cart[RAM_END/2] << 16) | cart[RAM_END/2+1]; |
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|
882 uint16_t ram_flags = cart[RAM_FLAGS/2]; |
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883 gen->save_flags = ram_flags & RAM_FLAG_MASK; |
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|
884 memset(memmap, 0, sizeof(memmap_chunk)*2); |
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|
885 if (ram_start >= rom_end) { |
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|
886 memmap[0].end = rom_end; |
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|
887 memmap[0].mask = 0xFFFFFF; |
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|
888 memmap[0].flags = MMAP_READ; |
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|
889 memmap[0].buffer = cart; |
488
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|
890 |
351
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|
891 ram_start &= 0xFFFFFE; |
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|
892 ram_end |= 1; |
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|
893 memmap[1].start = ram_start; |
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|
894 gen->save_ram_mask = memmap[1].mask = ram_end-ram_start; |
2f264d2a60c2
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346
diff
changeset
|
895 ram_end += 1; |
2f264d2a60c2
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changeset
|
896 memmap[1].end = ram_end; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
897 memmap[1].flags = MMAP_READ | MMAP_WRITE; |
2f264d2a60c2
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|
898 size = ram_end-ram_start; |
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changeset
|
899 if ((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_ODD) { |
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|
900 memmap[1].flags |= MMAP_ONLY_ODD; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
901 size /= 2; |
2f264d2a60c2
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|
902 } else if((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_EVEN) { |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
903 memmap[1].flags |= MMAP_ONLY_EVEN; |
2f264d2a60c2
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346
diff
changeset
|
904 size /= 2; |
2f264d2a60c2
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diff
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|
905 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
906 memmap[1].buffer = gen->save_ram = malloc(size); |
488
32f053ad9b02
Basic OpenGL rendering is working
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parents:
487
diff
changeset
|
907 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
908 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
|
909 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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diff
changeset
|
910 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
911 //Assume the standard Sega mapper for now |
2f264d2a60c2
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346
diff
changeset
|
912 memmap[0].end = 0x200000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
913 memmap[0].mask = 0xFFFFFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
914 memmap[0].flags = MMAP_READ; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
915 memmap[0].buffer = cart; |
488
32f053ad9b02
Basic OpenGL rendering is working
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parents:
487
diff
changeset
|
916 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
917 memmap[1].start = 0x200000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
918 memmap[1].end = 0x400000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
919 memmap[1].mask = 0x1FFFFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
920 ram_start &= 0xFFFFFE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
921 ram_end |= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
922 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
changeset
|
923 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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parents:
346
diff
changeset
|
924 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
|
925 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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parents:
346
diff
changeset
|
926 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.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
927 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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parents:
346
diff
changeset
|
928 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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parents:
346
diff
changeset
|
929 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
|
930 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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parents:
346
diff
changeset
|
931 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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parents:
346
diff
changeset
|
932 memmap[num_chunks].start = 0xA13000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
933 memmap[num_chunks].end = 0xA13100; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
934 memmap[num_chunks].mask = 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
935 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
|
936 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
|
937 num_chunks++; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
938 ram_end++; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
939 size = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
940 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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parents:
346
diff
changeset
|
941 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
942 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
943 gen->save_ram = malloc(size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
944 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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parents:
346
diff
changeset
|
945 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
946 } 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
|
947 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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parents:
346
diff
changeset
|
948 num_chunks = sizeof(static_map)/sizeof(memmap_chunk); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
949 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
950 if (gen->save_ram) { |
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 memset(gen->save_ram, 0, 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
|
952 FILE * f = fopen(sram_filename, "rb"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
953 if (f) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
954 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
|
955 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
956 if (read > 0) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
957 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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parents:
346
diff
changeset
|
958 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
959 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
960 atexit(save_sram); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
961 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
962 init_x86_68k_opts(&opts, memmap, num_chunks); |
211 | 963 opts.address_log = address_log; |
964 init_68k_context(&context, opts.native_code_map, &opts); | |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
965 |
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
|
966 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.
Mike Pavone <pavone@retrodev.com>
parents:
280
diff
changeset
|
967 context.system = gen; |
211 | 968 //cartridge ROM |
969 context.mem_pointers[0] = cart; | |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
970 context.target_cycle = context.sync_cycle = mclk_target/MCLKS_PER_68K; |
211 | 971 //work RAM |
972 context.mem_pointers[1] = ram; | |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
973 //save RAM/map |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
974 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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346
diff
changeset
|
975 context.mem_pointers[3] = (uint16_t *)gen->save_ram; |
211 | 976 uint32_t address; |
977 address = cart[2] << 16 | cart[3]; | |
978 translate_m68k_stream(address, &context); | |
424
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
979 if (statefile) { |
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
980 uint32_t pc = load_gst(gen, statefile); |
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
981 if (!pc) { |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
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parents:
447
diff
changeset
|
982 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
|
983 exit(1); |
7e8e179116af
Add support for loading GST format savestates
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diff
changeset
|
984 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
985 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
|
986 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
|
987 insert_breakpoint(&context, pc, debugger); |
424
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
988 } |
451
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
989 adjust_int_cycle(gen->m68k, gen->vdp); |
b7c3b2d22858
Added support for saving savestates. Added gst savestate format test harness
Mike Pavone <pavone@retrodev.com>
parents:
447
diff
changeset
|
990 gen->z80->native_pc = z80_get_native_address_trans(gen->z80, gen->z80->pc); |
424
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
991 start_68k_context(&context, pc); |
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
992 } 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
|
993 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
|
994 insert_breakpoint(&context, address, debugger); |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
995 } |
7e8e179116af
Add support for loading GST format savestates
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parents:
422
diff
changeset
|
996 m68k_reset(&context); |
211 | 997 } |
998 } | |
999 | |
340
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1000 char title[64]; |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1001 |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1002 #define TITLE_START 0x150 |
58a085cfc6bd
Set window title based on ROM header name
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338
diff
changeset
|
1003 #define TITLE_END (TITLE_START+48) |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1004 |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1005 void update_title() |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1006 { |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1007 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
|
1008 while(last > cart + TITLE_START/2 && *last == 0x2020) |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1009 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1010 last--; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1011 } |
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1012 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
|
1013 char *cur = title; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1014 char last_char = ' '; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1015 for (; start != last; start++) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1016 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1017 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
|
1018 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1019 last_char = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1020 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1021 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
|
1022 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1023 last_char = *start & 0xFF; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1024 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1025 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1026 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1027 if ((*start & 0xFF) != ' ') { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1028 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1029 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1030 strcpy(cur, " - BlastEm"); |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1031 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1032 |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1033 #define REGION_START 0x1F0 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1034 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1035 int detect_specific_region(char region) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1036 { |
346
aff29d50afd5
Fix a region detection bug
Mike Pavone <pavone@retrodev.com>
parents:
345
diff
changeset
|
1037 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
|
1038 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1039 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1040 void detect_region() |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1041 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1042 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
|
1043 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1044 } else if (detect_specific_region('J')) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1045 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
|
1046 } 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
|
1047 version_reg = NO_DISK | EUR; |
434
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1048 } else { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1049 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
|
1050 if (def_region) { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1051 switch(*def_region) |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1052 { |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1053 case 'j': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1054 case 'J': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1055 version_reg = NO_DISK | JAP; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1056 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1057 case 'u': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1058 case 'U': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1059 version_reg = NO_DISK | USA; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1060 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1061 case 'e': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1062 case 'E': |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1063 version_reg = NO_DISK | EUR; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1064 break; |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1065 } |
f0631c85a90b
Read default region from config file
Mike Pavone <pavone@retrodev.com>
parents:
433
diff
changeset
|
1066 } |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1067 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1068 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1069 |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1070 int main(int argc, char ** argv) |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1071 { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1072 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
|
1073 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
|
1074 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1075 } |
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
|
1076 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
|
1077 config = load_config(); |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1078 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
|
1079 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
|
1080 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
|
1081 int debug = 0; |
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1082 int ym_log = 0; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1083 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
|
1084 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
|
1085 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
|
1086 FILE *address_log = NULL; |
425
8b3ae850d1c4
Forgot to null initialize the statfile pointer
Mike Pavone <pavone@retrodev.com>
parents:
424
diff
changeset
|
1087 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
|
1088 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
|
1089 uint8_t fullscreen = 0, use_gl = 1; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1090 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
|
1091 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
|
1092 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
|
1093 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
|
1094 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
|
1095 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
|
1096 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
|
1097 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
|
1098 } |
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
|
1099 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
|
1100 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
|
1101 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
|
1102 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
|
1103 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
|
1104 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
|
1105 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
|
1106 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
|
1107 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
|
1108 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
|
1109 case 'f': |
444
cc754a309ead
Add fullscreen support and add a keybinding for exiting the emulator
Mike Pavone <pavone@retrodev.com>
parents:
434
diff
changeset
|
1110 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
|
1111 break; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1112 case 'g': |
501
e1355aa80f4d
Use OpenGL by default. Add OpenGL switch to help text
Mike Pavone <pavone@retrodev.com>
parents:
496
diff
changeset
|
1113 use_gl = 0; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1114 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
|
1115 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
|
1116 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
|
1117 break; |
464 | 1118 case 'v': |
1119 printf("blastem %s\n", BLASTEM_VERSION); | |
1120 return 0; | |
1121 break; | |
265
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1122 case 'n': |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1123 z80_enabled = 0; |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1124 break; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1125 case 'r': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1126 i++; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1127 if (i >= argc) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1128 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
|
1129 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1130 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1131 switch (argv[i][0]) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1132 { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1133 case 'j': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1134 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
|
1135 force_version = NO_DISK | JAP; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1136 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1137 case 'u': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1138 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
|
1139 force_version = NO_DISK | USA; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1140 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1141 case 'e': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1142 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
|
1143 force_version = NO_DISK | EUR; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1144 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1145 default: |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1146 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
|
1147 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1148 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1149 break; |
424
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1150 case 's': |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1151 i++; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1152 if (i >= argc) { |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1153 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
|
1154 return 1; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1155 } |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1156 statefile = argv[i]; |
7e8e179116af
Add support for loading GST format savestates
Mike Pavone <pavone@retrodev.com>
parents:
422
diff
changeset
|
1157 break; |
407
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1158 case 'y': |
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1159 ym_log = 1; |
c3abc4ada43d
Add support for logging YM2612 channels to WAVE files
Mike Pavone <pavone@retrodev.com>
parents:
405
diff
changeset
|
1160 break; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1161 case 'h': |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1162 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
|
1163 "Usage: blastem [OPTIONS] ROMFILE [WIDTH] [HEIGHT]\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1164 "Options:\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1165 " -h Print this help text\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1166 " -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
|
1167 " -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
|
1168 " -g Disable OpenGL rendering\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1169 " -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
|
1170 " -d Enter debugger on startup\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1171 " -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
|
1172 " -v Display version number and exit\n" |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1173 " -l Log 68K code addresses (useful for assemblers)\n" |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1174 " -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
|
1175 ); |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1176 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
|
1177 default: |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1178 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
|
1179 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
|
1180 } |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1181 } else if (!loaded) { |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1182 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
|
1183 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
|
1184 return 1; |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1185 } |
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
|
1186 romfname = argv[i]; |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1187 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
|
1188 } 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
|
1189 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
|
1190 } 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
|
1191 height = atoi(argv[i]); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1192 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1193 } |
463
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1194 if (!loaded) { |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1195 fputs("You must specify a ROM filename!\n", stderr); |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1196 return 1; |
a1d298119153
Added -h help text option
Mike Pavone <pavone@retrodev.com>
parents:
458
diff
changeset
|
1197 } |
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
|
1198 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
|
1199 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
|
1200 } |
340
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1201 update_title(); |
433
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1202 int def_width = 0; |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1203 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
|
1204 if (config_width) { |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1205 def_width = atoi(config_width); |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1206 } |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1207 if (!def_width) { |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1208 def_width = 640; |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1209 } |
ed4d0017c041
Read default render width from config file
Mike Pavone <pavone@retrodev.com>
parents:
430
diff
changeset
|
1210 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
|
1211 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
|
1212 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
|
1213 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
|
1214 fps = 50; |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1215 } |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1216 if (!headless) { |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1217 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
|
1218 } |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1219 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
|
1220 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
|
1221 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
|
1222 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
|
1223 |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1224 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
|
1225 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
|
1226 |
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
|
1227 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
|
1228 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
|
1229 |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1230 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
|
1231 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
|
1232 |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1233 z80_context z_context; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1234 x86_z80_options z_opts; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1235 init_x86_z80_opts(&z_opts); |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1236 init_z80_context(&z_context, &z_opts); |
290
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1237 |
171f97e70d85
Implement writes from Z80 to YM-2612
Mike Pavone <pavone@retrodev.com>
parents:
289
diff
changeset
|
1238 z_context.system = &gen; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1239 z_context.mem_pointers[0] = z80_ram; |
623
66cc60215e5c
Fix most of the breakage caused by the vcounter/hcounter changes
Michael Pavone <pavone@retrodev.com>
parents:
534
diff
changeset
|
1240 z_context.sync_cycle = z_context.target_cycle = mclk_target/MCLKS_PER_Z80; |
260
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1241 z_context.int_cycle = CYCLE_NEVER; |
625f8e4d5fd2
Initial stab at integartiong Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
215
diff
changeset
|
1242 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
|
1243 |
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
|
1244 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
|
1245 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
|
1246 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
|
1247 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
|
1248 genesis = &gen; |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1249 |
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
|
1250 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
|
1251 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
|
1252 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
|
1253 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
|
1254 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
|
1255 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
|
1256 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
|
1257 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
|
1258 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1259 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1260 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
|
1261 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
|
1262 } |
398
c26e48a93fa3
Make keybindings data driven so they can be populated from a config file later
Mike Pavone <pavone@retrodev.com>
parents:
395
diff
changeset
|
1263 set_keybindings(); |
488
32f053ad9b02
Basic OpenGL rendering is working
Mike Pavone <pavone@retrodev.com>
parents:
487
diff
changeset
|
1264 |
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
|
1265 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
|
1266 return 0; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1267 } |