Mercurial > repos > blastem
annotate blastem.c @ 363:c708dea45f8b
Fix push AF
author | Mike Pavone <pavone@retrodev.com> |
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date | Wed, 29 May 2013 00:13:48 -0700 |
parents | b7c3facee762 |
children | 62177cc39049 |
rev | line source |
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1 #include "68kinst.h" |
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2 #include "m68k_to_x86.h" |
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3 #include "z80_to_x86.h" |
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4 #include "mem.h" |
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5 #include "vdp.h" |
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6 #include "render.h" |
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7 #include "blastem.h" |
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8 #include <stdio.h> |
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9 #include <stdlib.h> |
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10 #include <string.h> |
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11 |
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12 #define CARTRIDGE_WORDS 0x200000 |
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13 #define RAM_WORDS 32 * 1024 |
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14 #define Z80_RAM_BYTES 8 * 1024 |
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15 #define MCLKS_PER_68K 7 |
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16 #define MCLKS_PER_Z80 15 |
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17 #define MCLKS_PER_PSG (MCLKS_PER_Z80*16) |
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18 //TODO: Figure out the exact value for this |
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19 #define CYCLE_NEVER 0xFFFFFFFF |
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20 #define LINES_NTSC 262 |
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21 #define LINES_PAL 312 |
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22 |
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23 uint32_t mclks_per_frame = MCLKS_LINE*LINES_NTSC; |
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24 |
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25 uint16_t cart[CARTRIDGE_WORDS]; |
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26 uint16_t ram[RAM_WORDS]; |
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27 uint8_t z80_ram[Z80_RAM_BYTES]; |
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28 |
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29 io_port gamepad_1; |
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30 io_port gamepad_2; |
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31 |
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32 int headless = 0; |
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33 int z80_enabled = 1; |
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34 int frame_limit = 0; |
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35 |
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36 #ifndef MIN |
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37 #define MIN(a,b) ((a) < (b) ? (a) : (b)) |
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38 #endif |
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39 |
166 | 40 #define SMD_HEADER_SIZE 512 |
41 #define SMD_MAGIC1 0x03 | |
42 #define SMD_MAGIC2 0xAA | |
43 #define SMD_MAGIC3 0xBB | |
44 #define SMD_BLOCK_SIZE 0x4000 | |
45 | |
46 int load_smd_rom(long filesize, FILE * f) | |
47 { | |
48 uint8_t block[SMD_BLOCK_SIZE]; | |
49 filesize -= SMD_HEADER_SIZE; | |
50 fseek(f, SMD_HEADER_SIZE, SEEK_SET); | |
51 | |
52 uint16_t * dst = cart; | |
53 while (filesize > 0) { | |
54 fread(block, 1, SMD_BLOCK_SIZE, f); | |
55 for (uint8_t *low = block, *high = (block+SMD_BLOCK_SIZE/2), *end = block+SMD_BLOCK_SIZE; high < end; high++, low++) { | |
56 *(dst++) = *high << 8 | *low; | |
57 } | |
58 filesize -= SMD_BLOCK_SIZE; | |
59 } | |
60 return 1; | |
61 } | |
62 | |
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63 int load_rom(char * filename) |
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64 { |
166 | 65 uint8_t header[10]; |
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66 FILE * f = fopen(filename, "rb"); |
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67 if (!f) { |
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68 return 0; |
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69 } |
166 | 70 fread(header, 1, sizeof(header), f); |
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71 fseek(f, 0, SEEK_END); |
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72 long filesize = ftell(f); |
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73 if (filesize/2 > CARTRIDGE_WORDS) { |
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74 //carts bigger than 4MB not currently supported |
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75 filesize = CARTRIDGE_WORDS*2; |
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76 } |
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77 fseek(f, 0, SEEK_SET); |
166 | 78 if (header[1] == SMD_MAGIC1 && header[8] == SMD_MAGIC2 && header[9] == SMD_MAGIC3) { |
79 int i; | |
80 for (i = 3; i < 8; i++) { | |
81 if (header[i] != 0) { | |
82 break; | |
83 } | |
84 } | |
85 if (i == 8) { | |
86 if (header[2]) { | |
87 fprintf(stderr, "%s is a split SMD ROM which is not currently supported", filename); | |
88 exit(1); | |
89 } | |
90 return load_smd_rom(filesize, f); | |
91 } | |
92 } | |
93 fread(cart, 2, filesize/2, f); | |
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94 fclose(f); |
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95 for(unsigned short * cur = cart; cur - cart < (filesize/2); ++cur) |
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96 { |
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97 *cur = (*cur >> 8) | (*cur << 8); |
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98 } |
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99 //TODO: Mirror ROM |
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100 return 1; |
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101 } |
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102 |
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103 uint16_t read_dma_value(uint32_t address) |
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104 { |
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105 //addresses here are word addresses (i.e. bit 0 corresponds to A1), so no need to do div by 2 |
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106 if (address < 0x200000) { |
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107 return cart[address]; |
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108 } else if(address >= 0x700000) { |
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109 return ram[address & 0x7FFF]; |
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110 } |
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111 //TODO: Figure out what happens when you try to DMA from weird adresses like IO or banked Z80 area |
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112 return 0; |
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113 } |
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114 |
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115 //TODO: Make these dependent on the video mode |
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116 //#define VINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_68K) |
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117 #define ZVINT_CYCLE ((MCLKS_LINE * 225 + (148 + 40) * 4)/MCLKS_PER_Z80) |
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118 //#define VINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_68K) |
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119 //#define ZVINT_CYCLE ((MCLKS_LINE * 226)/MCLKS_PER_Z80) |
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120 |
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121 void adjust_int_cycle(m68k_context * context, vdp_context * v_context) |
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122 { |
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123 context->int_cycle = CYCLE_NEVER; |
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124 if ((context->status & 0x7) < 6) { |
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125 uint32_t next_vint = vdp_next_vint(v_context); |
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126 if (next_vint != CYCLE_NEVER) { |
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127 next_vint /= MCLKS_PER_68K; |
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128 context->int_cycle = next_vint; |
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129 context->int_num = 6; |
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130 } |
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131 if ((context->status & 0x7) < 4) { |
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132 uint32_t next_hint = vdp_next_hint(v_context); |
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133 if (next_hint != CYCLE_NEVER) { |
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134 next_hint /= MCLKS_PER_68K; |
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135 if (next_hint < context->int_cycle) { |
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136 context->int_cycle = next_hint; |
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137 context->int_num = 4; |
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138 |
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139 } |
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140 } |
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141 } |
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142 } |
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143 |
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144 context->target_cycle = context->int_cycle < context->sync_cycle ? context->int_cycle : context->sync_cycle; |
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145 /*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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146 context->current_cycle, context->target_cycle, context->int_cycle, context->int_num, (context->status & 0x7), |
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147 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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148 } |
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149 |
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150 int break_on_sync = 0; |
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151 |
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152 uint8_t reset = 1; |
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153 uint8_t need_reset = 0; |
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154 uint8_t busreq = 0; |
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155 uint8_t busack = 0; |
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156 uint32_t busack_cycle = CYCLE_NEVER; |
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157 uint8_t new_busack = 0; |
280 | 158 //#define DO_DEBUG_PRINT |
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159 #ifdef DO_DEBUG_PRINT |
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160 #define dprintf printf |
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161 #define dputs puts |
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162 #else |
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163 #define dprintf |
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164 #define dputs |
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165 #endif |
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166 |
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167 void sync_z80(z80_context * z_context, uint32_t mclks) |
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168 { |
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169 if (z80_enabled && !reset && !busreq) { |
333 | 170 genesis_context * gen = z_context->system; |
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171 if (need_reset) { |
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172 z80_reset(z_context); |
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173 need_reset = 0; |
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174 } |
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175 z_context->sync_cycle = mclks / MCLKS_PER_Z80; |
333 | 176 uint32_t vint_cycle = vdp_next_vint_z80(gen->vdp) / MCLKS_PER_Z80; |
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177 while (z_context->current_cycle < z_context->sync_cycle) { |
335 | 178 if (z_context->iff1 && z_context->current_cycle < vint_cycle) { |
179 z_context->int_cycle = vint_cycle < z_context->int_enable_cycle ? z_context->int_enable_cycle : vint_cycle; | |
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180 } |
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181 z_context->target_cycle = z_context->sync_cycle < z_context->int_cycle ? z_context->sync_cycle : z_context->int_cycle; |
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182 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); |
260
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183 z80_run(z_context); |
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184 dprintf("Z80 ran to cycle %d\n", z_context->current_cycle); |
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185 } |
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186 } else { |
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187 z_context->current_cycle = mclks / MCLKS_PER_Z80; |
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188 } |
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189 } |
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190 uint32_t frame=0; |
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191 m68k_context * sync_components(m68k_context * context, uint32_t address) |
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192 { |
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193 //TODO: Handle sync targets smaller than a single frame |
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194 genesis_context * gen = context->system; |
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195 vdp_context * v_context = gen->vdp; |
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196 z80_context * z_context = gen->z80; |
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197 uint32_t mclks = context->current_cycle * MCLKS_PER_68K; |
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198 sync_z80(z_context, mclks); |
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199 if (mclks >= mclks_per_frame) { |
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200 ym_run(gen->ym, context->current_cycle); |
362 | 201 gen->ym->current_cycle -= ((mclks_per_frame/MCLKS_PER_68K) / 6) * 6; |
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202 //printf("reached frame end | 68K Cycles: %d, MCLK Cycles: %d\n", context->current_cycle, mclks); |
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203 vdp_run_context(v_context, mclks_per_frame); |
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204 psg_run(gen->psg, mclks/MCLKS_PER_PSG); |
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205 gen->psg->cycles -= mclks_per_frame/MCLKS_PER_PSG; |
215
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206 if (!headless) { |
338
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207 break_on_sync |= wait_render_frame(v_context, frame_limit); |
215
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208 } |
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209 frame++; |
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210 mclks -= mclks_per_frame; |
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211 vdp_adjust_cycles(v_context, mclks_per_frame); |
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212 io_adjust_cycles(&gamepad_1, context->current_cycle, mclks_per_frame/MCLKS_PER_68K); |
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213 io_adjust_cycles(&gamepad_2, context->current_cycle, mclks_per_frame/MCLKS_PER_68K); |
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214 if (busack_cycle != CYCLE_NEVER) { |
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215 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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216 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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217 } else { |
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218 busack_cycle = CYCLE_NEVER; |
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219 busack = new_busack; |
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220 } |
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221 } |
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222 context->current_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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223 if (z_context->current_cycle >= mclks_per_frame/MCLKS_PER_Z80) { |
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224 z_context->current_cycle -= mclks_per_frame/MCLKS_PER_Z80; |
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225 } else { |
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226 z_context->current_cycle = 0; |
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227 } |
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228 if (mclks) { |
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229 vdp_run_context(v_context, mclks); |
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230 } |
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231 } else { |
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232 //printf("running VDP for %d cycles\n", mclks - v_context->cycles); |
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233 vdp_run_context(v_context, mclks); |
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234 psg_run(gen->psg, mclks/MCLKS_PER_PSG); |
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235 } |
317
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236 if (context->int_ack) { |
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237 vdp_int_ack(v_context, context->int_ack); |
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238 context->int_ack = 0; |
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239 } |
186
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240 adjust_int_cycle(context, v_context); |
198
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241 if (break_on_sync && address) { |
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242 break_on_sync = 0; |
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243 debugger(context, address); |
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244 } |
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245 return context; |
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246 } |
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247 |
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248 m68k_context * vdp_port_write(uint32_t vdp_port, m68k_context * context, uint16_t value) |
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249 { |
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250 if (vdp_port & 0x2700E0) { |
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251 printf("machine freeze due to write to address %X\n", 0xC00000 | vdp_port); |
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252 exit(1); |
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253 } |
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254 vdp_port &= 0x1F; |
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255 //printf("vdp_port write: %X, value: %X, cycle: %d\n", vdp_port, value, context->current_cycle); |
198
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256 sync_components(context, 0); |
263
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257 vdp_context * v_context = context->video_context; |
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258 if (vdp_port < 0x10) { |
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259 int blocked; |
345
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260 uint32_t before_cycle = v_context->cycles; |
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261 if (vdp_port < 4) { |
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262 while (vdp_data_port_write(v_context, value) < 0) { |
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263 while(v_context->flags & FLAG_DMA_RUN) { |
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264 vdp_run_dma_done(v_context, mclks_per_frame); |
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265 if (v_context->cycles >= mclks_per_frame) { |
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266 if (!headless) { |
338
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267 wait_render_frame(v_context, frame_limit); |
215
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268 } |
342
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269 vdp_adjust_cycles(v_context, mclks_per_frame); |
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270 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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271 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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272 if (busack_cycle != CYCLE_NEVER) { |
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273 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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274 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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275 } else { |
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276 busack_cycle = CYCLE_NEVER; |
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277 busack = new_busack; |
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278 } |
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279 } |
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280 } |
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281 } |
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282 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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283 } |
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284 } else if(vdp_port < 8) { |
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285 blocked = vdp_control_port_write(v_context, value); |
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286 if (blocked) { |
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287 while (blocked) { |
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288 while(v_context->flags & FLAG_DMA_RUN) { |
342
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289 vdp_run_dma_done(v_context, mclks_per_frame); |
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290 if (v_context->cycles >= mclks_per_frame) { |
215
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291 if (!headless) { |
338
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292 wait_render_frame(v_context, frame_limit); |
215
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293 } |
342
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294 vdp_adjust_cycles(v_context, mclks_per_frame); |
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295 io_adjust_cycles(&gamepad_1, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
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296 io_adjust_cycles(&gamepad_2, v_context->cycles/MCLKS_PER_68K, mclks_per_frame/MCLKS_PER_68K); |
344
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297 if (busack_cycle != CYCLE_NEVER) { |
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298 if (busack_cycle > mclks_per_frame/MCLKS_PER_68K) { |
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299 busack_cycle -= mclks_per_frame/MCLKS_PER_68K; |
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300 } else { |
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301 busack_cycle = CYCLE_NEVER; |
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302 busack = new_busack; |
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303 } |
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304 } |
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305 } |
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306 } |
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307 if (blocked < 0) { |
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308 blocked = vdp_control_port_write(v_context, value); |
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309 } else { |
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310 blocked = 0; |
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311 } |
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312 } |
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313 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
88
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314 } else { |
186
02e25abe2dcd
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315 adjust_int_cycle(context, v_context); |
88
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316 } |
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317 } else { |
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318 printf("Illegal write to HV Counter port %X\n", vdp_port); |
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319 exit(1); |
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320 } |
345
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321 if (v_context->cycles != before_cycle) { |
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322 context->current_cycle = v_context->cycles / MCLKS_PER_68K; |
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323 } |
88
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324 } else if (vdp_port < 0x18) { |
354
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diff
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325 genesis_context * gen = context->system; |
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326 psg_run(gen->psg, (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_PSG); |
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327 psg_write(gen->psg, value); |
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328 } else { |
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329 //TODO: Implement undocumented test register(s) |
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330 } |
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331 return context; |
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332 } |
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333 |
343
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334 m68k_context * vdp_port_write_b(uint32_t vdp_port, m68k_context * context, uint8_t value) |
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335 { |
357
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336 return vdp_port_write(vdp_port, context, vdp_port < 0x10 ? value | value << 8 : ((vdp_port & 1) ? value : 0)); |
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337 } |
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338 |
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339 z80_context * z80_vdp_port_write(uint16_t vdp_port, z80_context * context, uint8_t value) |
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340 { |
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341 genesis_context * gen = context->system; |
358
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342 if (vdp_port & 0xE0) { |
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343 printf("machine freeze due to write to Z80 address %X\n", 0x7F00 | vdp_port); |
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344 exit(1); |
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345 } |
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346 if (vdp_port < 0x10) { |
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347 //These probably won't currently interact well with the 68K accessing the VDP |
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348 vdp_run_context(gen->vdp, context->current_cycle * MCLKS_PER_Z80); |
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349 if (vdp_port < 4) { |
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350 vdp_data_port_write(gen->vdp, value << 8 | value); |
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351 } else if (vdp_port < 8) { |
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352 vdp_control_port_write(gen->vdp, value << 8 | value); |
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353 } else { |
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354 printf("Illegal write to HV Counter port %X\n", vdp_port); |
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355 exit(1); |
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356 } |
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357 } else if (vdp_port < 0x18) { |
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|
358 psg_run(gen->psg, (context->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_PSG); |
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359 psg_write(gen->psg, value); |
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360 } else { |
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361 //TODO: Implement undocumented test register(s) |
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|
362 } |
357
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363 return context; |
343
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|
364 } |
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365 |
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366 uint16_t vdp_port_read(uint32_t vdp_port, m68k_context * context) |
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367 { |
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368 if (vdp_port & 0x2700E0) { |
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369 printf("machine freeze due to read from address %X\n", 0xC00000 | vdp_port); |
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370 exit(1); |
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371 } |
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372 vdp_port &= 0x1F; |
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373 uint16_t value; |
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374 sync_components(context, 0); |
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375 vdp_context * v_context = context->video_context; |
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376 if (vdp_port < 0x10) { |
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377 if (vdp_port < 4) { |
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378 value = vdp_data_port_read(v_context); |
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379 } else if(vdp_port < 8) { |
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380 value = vdp_control_port_read(v_context); |
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381 } else { |
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382 value = vdp_hv_counter_read(v_context); |
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383 //printf("HV Counter: %X at cycle %d\n", value, v_context->cycles); |
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384 } |
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385 context->current_cycle = v_context->cycles/MCLKS_PER_68K; |
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386 } else { |
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387 printf("Illegal read from PSG or test register port %X\n", vdp_port); |
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388 exit(1); |
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389 } |
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390 return value; |
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391 } |
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392 |
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393 uint8_t vdp_port_read_b(uint32_t vdp_port, m68k_context * context) |
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394 { |
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395 uint16_t value = vdp_port_read(vdp_port, context); |
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396 if (vdp_port & 1) { |
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397 return value; |
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398 } else { |
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399 return value >> 8; |
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400 } |
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401 } |
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402 |
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403 #define TH 0x40 |
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404 #define TH_TIMEOUT 8000 |
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405 |
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406 void io_adjust_cycles(io_port * pad, uint32_t current_cycle, uint32_t deduction) |
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407 { |
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408 /*uint8_t control = pad->control | 0x80; |
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409 uint8_t th = control & pad->output; |
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410 if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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411 printf("adjust_cycles | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, current_cycle); |
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412 }*/ |
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413 if (current_cycle >= pad->timeout_cycle) { |
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414 pad->th_counter = 0; |
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415 } else { |
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416 pad->timeout_cycle -= deduction; |
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417 } |
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418 if (busack_cycle < CYCLE_NEVER && current_cycle < busack_cycle) { |
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419 busack_cycle -= deduction; |
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420 } |
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421 } |
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422 |
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423 void io_data_write(io_port * pad, m68k_context * context, uint8_t value) |
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424 { |
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425 if (pad->control & TH) { |
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426 //check if TH has changed |
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427 if ((pad->output & TH) ^ (value & TH)) { |
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428 if (context->current_cycle >= pad->timeout_cycle) { |
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429 pad->th_counter = 0; |
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430 } |
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431 if (!(value & TH)) { |
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432 pad->th_counter++; |
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433 } |
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434 pad->timeout_cycle = context->current_cycle + TH_TIMEOUT; |
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435 } |
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436 } |
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437 pad->output = value; |
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438 } |
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439 |
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440 uint8_t io_data_read(io_port * pad, m68k_context * context) |
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441 { |
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442 uint8_t control = pad->control | 0x80; |
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443 uint8_t th = control & pad->output; |
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444 uint8_t input; |
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445 if (context->current_cycle >= pad->timeout_cycle) { |
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446 pad->th_counter = 0; |
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447 } |
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448 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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449 printf("io_data_read | control: %X, TH: %X, GAMEPAD_TH0: %X, GAMEPAD_TH1: %X, TH Counter: %d, Timeout: %d, Cycle: %d\n", control, th, pad->input[GAMEPAD_TH0], pad->input[GAMEPAD_TH1], pad->th_counter,pad->timeout_cycle, context->current_cycle); |
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450 }*/ |
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451 if (th) { |
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452 if (pad->th_counter == 3) { |
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453 input = pad->input[GAMEPAD_EXTRA]; |
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454 } else { |
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455 input = pad->input[GAMEPAD_TH1]; |
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456 } |
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457 } else { |
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458 if (pad->th_counter == 3) { |
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459 input = pad->input[GAMEPAD_TH0] | 0xF; |
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460 } else if(pad->th_counter == 4) { |
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461 input = pad->input[GAMEPAD_TH0] & 0x30; |
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462 } else { |
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463 input = pad->input[GAMEPAD_TH0] | 0xC; |
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464 } |
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465 } |
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466 uint8_t value = ((~input) & (~control)) | (pad->output & control); |
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467 /*if (pad->input[GAMEPAD_TH0] || pad->input[GAMEPAD_TH1]) { |
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468 printf ("value: %X\n", value); |
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469 }*/ |
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470 return value; |
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471 } |
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472 |
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473 uint32_t zram_counter = 0; |
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474 #define Z80_ACK_DELAY 3 |
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475 #define Z80_BUSY_DELAY 1//TODO: Find the actual value for this |
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476 #define Z80_REQ_BUSY 1 |
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477 #define Z80_REQ_ACK 0 |
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478 #define Z80_RES_BUSACK reset |
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479 |
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480 m68k_context * io_write(uint32_t location, m68k_context * context, uint8_t value) |
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481 { |
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482 genesis_context * gen = context->system; |
153
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483 if (location < 0x10000) { |
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484 if (busack_cycle <= context->current_cycle) { |
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485 busack = new_busack; |
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486 busack_cycle = CYCLE_NEVER; |
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487 } |
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488 if (!(busack || reset)) { |
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489 location &= 0x7FFF; |
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490 if (location < 0x4000) { |
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491 z80_ram[location & 0x1FFF] = value; |
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492 z80_handle_code_write(location & 0x1FFF, gen->z80); |
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493 } else if (location < 0x6000) { |
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494 ym_run(gen->ym, context->current_cycle); |
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495 if (location & 1) { |
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496 ym_data_write(gen->ym, value); |
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497 } else if(location & 2) { |
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498 ym_address_write_part2(gen->ym, value); |
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499 } else { |
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500 ym_address_write_part1(gen->ym, value); |
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501 } |
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502 } |
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503 } |
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504 } else { |
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505 location &= 0x1FFF; |
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506 if (location < 0x100) { |
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507 switch(location/2) |
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508 { |
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509 case 0x1: |
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510 io_data_write(&gamepad_1, context, value); |
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511 break; |
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512 case 0x2: |
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513 io_data_write(&gamepad_2, context, value); |
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514 break; |
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515 case 0x3://PORT C Data |
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516 break; |
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517 case 0x4: |
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518 gamepad_1.control = value; |
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519 break; |
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520 case 0x5: |
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521 gamepad_2.control = value; |
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522 break; |
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523 } |
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524 } else { |
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525 if (location == 0x1100) { |
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526 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
336
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527 if (busack_cycle <= context->current_cycle) { |
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528 busack = new_busack; |
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529 busack_cycle = CYCLE_NEVER; |
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530 } |
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531 if (value & 1) { |
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532 dputs("bus requesting Z80"); |
336
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533 |
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534 if(!reset && !busreq) { |
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535 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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536 new_busack = Z80_REQ_ACK; |
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537 busreq = 1; |
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538 } |
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539 } else { |
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540 if (busreq) { |
271
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541 dputs("releasing z80 bus"); |
280 | 542 #ifdef DO_DEBUG_PRINT |
279
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543 char fname[20]; |
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544 sprintf(fname, "zram-%d", zram_counter++); |
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545 FILE * f = fopen(fname, "wb"); |
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546 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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547 fclose(f); |
280 | 548 #endif |
336
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549 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K; |
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550 new_busack = Z80_REQ_BUSY; |
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551 busreq = 0; |
260
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552 } |
289
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|
553 //busack_cycle = CYCLE_NEVER; |
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554 //busack = Z80_REQ_BUSY; |
336
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555 |
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|
556 } |
153
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557 } else if (location == 0x1200) { |
288
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558 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
153
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559 if (value & 1) { |
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|
560 if (reset && busreq) { |
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|
561 new_busack = 0; |
289
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562 busack_cycle = ((gen->z80->current_cycle + Z80_ACK_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K;//context->current_cycle + Z80_ACK_DELAY; |
153
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563 } |
260
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564 //TODO: Deal with the scenario in which reset is not asserted long enough |
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565 if (reset) { |
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|
566 need_reset = 1; |
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567 //TODO: Add necessary delay between release of reset and start of execution |
288
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568 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80; |
260
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569 } |
153
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|
570 reset = 0; |
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|
571 } else { |
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572 reset = 1; |
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|
573 } |
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|
574 } |
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|
575 } |
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|
576 } |
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changeset
|
577 return context; |
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|
578 } |
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|
579 |
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diff
changeset
|
580 m68k_context * io_write_w(uint32_t location, m68k_context * context, uint16_t value) |
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581 { |
288
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|
582 genesis_context * gen = context->system; |
153
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583 if (location < 0x10000) { |
336
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584 if (busack_cycle <= context->current_cycle) { |
153
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|
585 busack = new_busack; |
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|
586 busack_cycle = CYCLE_NEVER; |
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|
587 } |
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|
588 if (!(busack || reset)) { |
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|
589 location &= 0x7FFF; |
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|
590 if (location < 0x4000) { |
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|
591 z80_ram[location & 0x1FFE] = value >> 8; |
288
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|
592 z80_handle_code_write(location & 0x1FFE, gen->z80); |
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|
593 } else if (location < 0x6000) { |
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|
594 ym_run(gen->ym, context->current_cycle); |
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595 if (location & 1) { |
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|
596 ym_data_write(gen->ym, value >> 8); |
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597 } else if(location & 2) { |
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598 ym_address_write_part2(gen->ym, value >> 8); |
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599 } else { |
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600 ym_address_write_part1(gen->ym, value >> 8); |
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601 } |
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602 } |
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603 } |
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604 } else { |
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605 location &= 0x1FFF; |
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606 if (location < 0x100) { |
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607 switch(location/2) |
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608 { |
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609 case 0x1: |
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610 io_data_write(&gamepad_1, context, value); |
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611 break; |
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612 case 0x2: |
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613 io_data_write(&gamepad_2, context, value); |
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614 break; |
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615 case 0x3://PORT C Data |
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616 break; |
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617 case 0x4: |
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618 gamepad_1.control = value; |
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619 break; |
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620 case 0x5: |
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621 gamepad_2.control = value; |
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622 break; |
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623 } |
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624 } else { |
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625 //printf("IO Write of %X to %X @ %d\n", value, location, context->current_cycle); |
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626 if (location == 0x1100) { |
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627 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
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628 if (busack_cycle <= context->current_cycle) { |
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629 busack = new_busack; |
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630 busack_cycle = CYCLE_NEVER; |
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631 } |
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632 if (value & 0x100) { |
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633 dprintf("bus requesting Z80 @ %d\n", (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80); |
336
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634 |
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635 if(!reset && !busreq) { |
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636 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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637 new_busack = Z80_REQ_ACK; |
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638 busreq = 1; |
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639 } |
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640 } else { |
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641 if (busreq) { |
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642 dprintf("releasing Z80 bus @ %d\n", (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80); |
280 | 643 #ifdef DO_DEBUG_PRINT |
279
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644 char fname[20]; |
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645 sprintf(fname, "zram-%d", zram_counter++); |
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646 FILE * f = fopen(fname, "wb"); |
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647 fwrite(z80_ram, 1, sizeof(z80_ram), f); |
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648 fclose(f); |
280 | 649 #endif |
336
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650 busack_cycle = ((gen->z80->current_cycle + Z80_BUSY_DELAY) * MCLKS_PER_Z80) / MCLKS_PER_68K; |
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651 new_busack = Z80_REQ_BUSY; |
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652 busreq = 0; |
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653 } |
289
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654 //busack_cycle = CYCLE_NEVER; |
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655 //busack = Z80_REQ_BUSY; |
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656 } |
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657 } else if (location == 0x1200) { |
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658 sync_z80(gen->z80, context->current_cycle * MCLKS_PER_68K); |
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659 if (value & 0x100) { |
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660 if (reset && busreq) { |
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661 new_busack = 0; |
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662 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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663 } |
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664 //TODO: Deal with the scenario in which reset is not asserted long enough |
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665 if (reset) { |
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666 need_reset = 1; |
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667 //TODO: Add necessary delay between release of reset and start of execution |
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668 gen->z80->current_cycle = (context->current_cycle * MCLKS_PER_68K) / MCLKS_PER_Z80; |
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669 } |
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670 reset = 0; |
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671 } else { |
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672 reset = 1; |
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673 } |
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674 } |
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675 } |
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676 } |
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677 return context; |
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678 } |
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|
679 |
130
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|
680 #define USA 0x80 |
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681 #define JAP 0x00 |
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682 #define EUR 0xC0 |
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683 #define NO_DISK 0x20 |
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684 uint8_t version_reg = NO_DISK | USA; |
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685 |
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686 uint8_t io_read(uint32_t location, m68k_context * context) |
88
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687 { |
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688 uint8_t value; |
288
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689 genesis_context *gen = context->system; |
153
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690 if (location < 0x10000) { |
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691 if (busack_cycle <= context->current_cycle) { |
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692 busack = new_busack; |
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693 busack_cycle = CYCLE_NEVER; |
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694 } |
289
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695 if (!(busack==Z80_REQ_BUSY || reset)) { |
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696 location &= 0x7FFF; |
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697 if (location < 0x4000) { |
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698 value = z80_ram[location & 0x1FFF]; |
288
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699 } else if (location < 0x6000) { |
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700 ym_run(gen->ym, context->current_cycle); |
343
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701 value = ym_read_status(gen->ym); |
153
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702 } else { |
343
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703 value = 0xFF; |
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704 } |
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705 } else { |
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706 value = 0xFF; |
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707 } |
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708 } else { |
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709 location &= 0x1FFF; |
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710 if (location < 0x100) { |
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711 switch(location/2) |
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|
712 { |
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713 case 0x0: |
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714 //version bits should be 0 for now since we're not emulating TMSS |
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715 value = version_reg; |
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|
716 break; |
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717 case 0x1: |
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718 value = io_data_read(&gamepad_1, context); |
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719 break; |
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720 case 0x2: |
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721 value = io_data_read(&gamepad_2, context); |
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722 break; |
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723 case 0x3://PORT C Data |
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|
724 break; |
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|
725 case 0x4: |
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726 value = gamepad_1.control; |
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727 break; |
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|
728 case 0x5: |
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729 value = gamepad_2.control; |
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|
730 break; |
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|
731 default: |
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732 value = 0xFF; |
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733 } |
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734 } else { |
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735 if (location == 0x1100) { |
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736 if (busack_cycle <= context->current_cycle) { |
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737 busack = new_busack; |
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738 busack_cycle = CYCLE_NEVER; |
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739 } |
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740 value = Z80_RES_BUSACK || busack; |
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741 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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742 } else if (location == 0x1200) { |
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743 value = !reset; |
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744 } else { |
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745 value = 0xFF; |
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|
746 printf("Byte read of unknown IO location: %X\n", location); |
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747 } |
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|
748 } |
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|
749 } |
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|
750 return value; |
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|
751 } |
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752 |
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753 uint16_t io_read_w(uint32_t location, m68k_context * context) |
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754 { |
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755 uint16_t value; |
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756 genesis_context * gen = context->system; |
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757 if (location < 0x10000) { |
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758 if (busack_cycle <= context->current_cycle) { |
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759 busack = new_busack; |
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760 busack_cycle = CYCLE_NEVER; |
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761 } |
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762 if (!(busack==Z80_REQ_BUSY || reset)) { |
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763 location &= 0x7FFF; |
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764 if (location < 0x4000) { |
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765 value = z80_ram[location & 0x1FFE]; |
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766 } else if (location < 0x6000) { |
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767 ym_run(gen->ym, context->current_cycle); |
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768 value = ym_read_status(gen->ym); |
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769 } else { |
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770 value = 0xFF; |
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|
771 } |
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772 value = value | (value << 8); |
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773 } else { |
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774 value = 0xFFFF; |
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775 } |
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776 } else { |
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777 location &= 0x1FFF; |
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778 if (location < 0x100) { |
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779 switch(location/2) |
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780 { |
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781 case 0x0: |
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782 //version bits should be 0 for now since we're not emulating TMSS |
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783 //Not sure about the other bits |
343
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784 value = version_reg; |
153
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785 break; |
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|
786 case 0x1: |
343
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787 value = io_data_read(&gamepad_1, context); |
153
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788 break; |
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789 case 0x2: |
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790 value = io_data_read(&gamepad_2, context); |
153
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791 break; |
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792 case 0x3://PORT C Data |
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|
793 break; |
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|
794 case 0x4: |
343
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795 value = gamepad_1.control; |
153
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796 break; |
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797 case 0x5: |
343
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|
798 value = gamepad_2.control; |
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|
799 break; |
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|
800 case 0x6: |
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|
801 //PORT C Control |
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|
802 value = 0; |
153
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|
803 break; |
343
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|
804 default: |
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|
805 value = 0; |
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|
806 } |
343
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|
807 value = value | (value << 8); |
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|
808 //printf("Word read to %X returned %d\n", location, value); |
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809 } else { |
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|
810 if (location == 0x1100) { |
336
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|
811 if (busack_cycle <= context->current_cycle) { |
153
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812 busack = new_busack; |
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|
813 busack_cycle = CYCLE_NEVER; |
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814 } |
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|
815 value = (Z80_RES_BUSACK || busack) << 8; |
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816 //printf("Word read of BUSREQ returned %d\n", value); |
153
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817 } else if (location == 0x1200) { |
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818 value = (!reset) << 8; |
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|
819 } else { |
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|
820 printf("Word read of unknown IO location: %X\n", location); |
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821 } |
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|
822 } |
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|
823 } |
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|
824 return value; |
88
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|
825 } |
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826 |
290
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|
827 z80_context * z80_write_ym(uint16_t location, z80_context * context, uint8_t value) |
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|
828 { |
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|
829 genesis_context * gen = context->system; |
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830 ym_run(gen->ym, (context->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K); |
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|
831 if (location & 1) { |
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832 ym_data_write(gen->ym, value); |
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833 } else if (location & 2) { |
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834 ym_address_write_part2(gen->ym, value); |
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835 } else { |
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|
836 ym_address_write_part1(gen->ym, value); |
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837 } |
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|
838 return context; |
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|
839 } |
171f97e70d85
Implement writes from Z80 to YM-2612
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|
840 |
171f97e70d85
Implement writes from Z80 to YM-2612
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|
841 uint8_t z80_read_ym(uint16_t location, z80_context * context) |
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|
842 { |
171f97e70d85
Implement writes from Z80 to YM-2612
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|
843 genesis_context * gen = context->system; |
171f97e70d85
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|
844 ym_run(gen->ym, (context->current_cycle * MCLKS_PER_Z80) / MCLKS_PER_68K); |
171f97e70d85
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|
845 return ym_read_status(gen->ym); |
171f97e70d85
Implement writes from Z80 to YM-2612
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|
846 } |
171f97e70d85
Implement writes from Z80 to YM-2612
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|
847 |
351
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
848 uint16_t read_sram_w(uint32_t address, m68k_context * context) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
849 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
850 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
851 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
852 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
853 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
854 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
855 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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changeset
|
856 case RAM_FLAG_EVEN: |
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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|
857 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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|
858 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
859 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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|
860 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
861 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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|
862 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
863 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
864 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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346
diff
changeset
|
865 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
866 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
867 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
868 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
869 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
870 case RAM_FLAG_BOTH: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
871 return gen->save_ram[address]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
872 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
873 if (address & 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
874 return 0xFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
875 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
876 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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parents:
346
diff
changeset
|
877 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
878 case RAM_FLAG_ODD: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
879 if (address & 1) { |
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
|
880 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
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|
881 } 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
|
882 return 0xFF; |
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
|
883 } |
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
|
884 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
885 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
|
886 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
887 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
888 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.
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parents:
346
diff
changeset
|
889 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
890 genesis_context * gen = context->system; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
891 if ((gen->bank_regs[0] & 0x3) == 1) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
892 address &= gen->save_ram_mask; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
893 switch(gen->save_flags) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
894 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
895 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
changeset
|
896 gen->save_ram[address] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
897 gen->save_ram[address+1] = value; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
898 break; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
899 case RAM_FLAG_EVEN: |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
900 gen->save_ram[address >> 1] = value >> 8; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
901 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
|
902 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
|
903 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
|
904 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
|
905 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
906 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
907 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
|
908 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
909 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
910 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
|
911 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
912 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
|
913 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
|
914 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
|
915 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
|
916 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
917 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
|
918 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
|
919 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
|
920 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
|
921 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
|
922 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
|
923 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
924 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
|
925 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
|
926 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
|
927 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
|
928 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
929 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
|
930 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
931 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
932 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
|
933 } |
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 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
935 m68k_context * write_bank_reg_w(uint32_t address, m68k_context * context, uint16_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
936 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
937 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
|
938 address &= 0xE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
939 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
|
940 gen->bank_regs[address] = value; |
2f264d2a60c2
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|
941 if (!address) { |
2f264d2a60c2
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|
942 if (value & 1) { |
2f264d2a60c2
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|
943 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
944 } else { |
2f264d2a60c2
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diff
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|
945 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
946 } |
2f264d2a60c2
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346
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|
947 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
948 return context; |
2f264d2a60c2
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|
949 } |
2f264d2a60c2
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346
diff
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|
950 |
2f264d2a60c2
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346
diff
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|
951 m68k_context * write_bank_reg_b(uint32_t address, m68k_context * context, uint8_t value) |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
952 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
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|
953 if (address & 1) { |
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
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|
954 genesis_context * gen = context->system; |
2f264d2a60c2
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346
diff
changeset
|
955 address &= 0xE; |
2f264d2a60c2
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Mike Pavone <pavone@retrodev.com>
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346
diff
changeset
|
956 address >>= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
957 gen->bank_regs[address] = value; |
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
|
958 if (!address) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
959 if (value & 1) { |
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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|
960 context->mem_pointers[2] = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
961 } else { |
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
|
962 context->mem_pointers[2] = cart + 0x200000/2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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changeset
|
963 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
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|
964 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
965 } |
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
|
966 return context; |
2f264d2a60c2
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346
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|
967 } |
2f264d2a60c2
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|
968 |
184
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|
969 typedef struct bp_def { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
970 struct bp_def * next; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
971 uint32_t address; |
ebcbdd1c4cc8
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972 uint32_t index; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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973 } bp_def; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
974 |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
975 bp_def * breakpoints = NULL; |
ebcbdd1c4cc8
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|
976 uint32_t bp_index = 0; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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977 |
ebcbdd1c4cc8
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|
978 bp_def ** find_breakpoint(bp_def ** cur, uint32_t address) |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
979 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
980 while (*cur) { |
ebcbdd1c4cc8
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|
981 if ((*cur)->address == address) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
982 break; |
ebcbdd1c4cc8
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166
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|
983 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
984 cur = &((*cur)->next); |
ebcbdd1c4cc8
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Mike Pavone <pavone@retrodev.com>
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166
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changeset
|
985 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
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|
986 return cur; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
987 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
988 |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
989 bp_def ** find_breakpoint_idx(bp_def ** cur, uint32_t index) |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
990 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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changeset
|
991 while (*cur) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
992 if ((*cur)->index == index) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
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|
993 break; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
994 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
changeset
|
995 cur = &((*cur)->next); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
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|
996 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
changeset
|
997 return cur; |
ebcbdd1c4cc8
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|
998 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
999 |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1000 char * find_param(char * buf) |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1001 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1002 for (; *buf; buf++) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1003 if (*buf == ' ') { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1004 if (*(buf+1)) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1005 return buf+1; |
ebcbdd1c4cc8
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|
1006 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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parents:
166
diff
changeset
|
1007 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1008 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1009 return NULL; |
ebcbdd1c4cc8
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166
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changeset
|
1010 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1011 |
ebcbdd1c4cc8
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|
1012 void strip_nl(char * buf) |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1013 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1014 for(; *buf; buf++) { |
ebcbdd1c4cc8
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|
1015 if (*buf == '\n') { |
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|
1016 *buf = 0; |
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|
1017 return; |
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|
1018 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1019 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1020 } |
ebcbdd1c4cc8
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|
1021 |
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|
1022 m68k_context * debugger(m68k_context * context, uint32_t address) |
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|
1023 { |
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|
1024 static char last_cmd[1024]; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1025 char input_buf[1024]; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1026 static uint32_t branch_t; |
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|
1027 static uint32_t branch_f; |
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changeset
|
1028 m68kinst inst; |
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|
1029 //probably not necessary, but let's play it safe |
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|
1030 address &= 0xFFFFFF; |
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|
1031 if (address == branch_t) { |
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|
1032 bp_def ** f_bp = find_breakpoint(&breakpoints, branch_f); |
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|
1033 if (!*f_bp) { |
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changeset
|
1034 remove_breakpoint(context, branch_f); |
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|
1035 } |
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|
1036 branch_t = branch_f = 0; |
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|
1037 } else if(address == branch_f) { |
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|
1038 bp_def ** t_bp = find_breakpoint(&breakpoints, branch_t); |
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|
1039 if (!*t_bp) { |
ebcbdd1c4cc8
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|
1040 remove_breakpoint(context, branch_t); |
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|
1041 } |
ebcbdd1c4cc8
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|
1042 branch_t = branch_f = 0; |
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|
1043 } |
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|
1044 //Check if this is a user set breakpoint, or just a temporary one |
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|
1045 bp_def ** this_bp = find_breakpoint(&breakpoints, address); |
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|
1046 if (*this_bp) { |
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|
1047 printf("Breakpoint %d hit\n", (*this_bp)->index); |
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|
1048 } else { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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changeset
|
1049 remove_breakpoint(context, address); |
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|
1050 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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1051 uint16_t * pc; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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1052 if (address < 0x400000) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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1053 pc = cart + address/2; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
diff
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1054 } else if(address > 0xE00000) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
diff
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|
1055 pc = ram + (address & 0xFFFF)/2; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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1056 } else { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1057 fprintf(stderr, "Entered debugger at address %X\n", address); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1058 exit(1); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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1059 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1060 uint16_t * after_pc = m68k_decode(pc, &inst, address); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1061 m68k_disasm(&inst, input_buf); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1062 printf("%X: %s\n", address, input_buf); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1063 uint32_t after = address + (after_pc-pc)*2; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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1064 int debugging = 1; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1065 while (debugging) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1066 fputs(">", stdout); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1067 if (!fgets(input_buf, sizeof(input_buf), stdin)) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
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|
1068 fputs("fgets failed", stderr); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1069 break; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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1070 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1071 strip_nl(input_buf); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1072 //hitting enter repeats last command |
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|
1073 if (input_buf[0]) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1074 strcpy(last_cmd, input_buf); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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1075 } else { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1076 strcpy(input_buf, last_cmd); |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1077 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1078 char * param; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1079 char format[8]; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1080 uint32_t value; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1081 bp_def * new_bp; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1082 switch(input_buf[0]) |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1083 { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1084 case 'c': |
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|
1085 puts("Continuing"); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1086 debugging = 0; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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1087 break; |
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Mike Pavone <pavone@retrodev.com>
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|
1088 case 'b': |
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166
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|
1089 param = find_param(input_buf); |
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|
1090 if (!param) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1091 fputs("b command requires a parameter\n", stderr); |
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|
1092 break; |
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1093 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1094 value = strtol(param, NULL, 16); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1095 insert_breakpoint(context, value, (uint8_t *)debugger); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1096 new_bp = malloc(sizeof(bp_def)); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1097 new_bp->next = breakpoints; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1098 new_bp->address = value; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1099 new_bp->index = bp_index++; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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1100 breakpoints = new_bp; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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1101 printf("Breakpoint %d set at %X\n", new_bp->index, value); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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1102 break; |
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Mike Pavone <pavone@retrodev.com>
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166
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1103 case 'a': |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1104 param = find_param(input_buf); |
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Mike Pavone <pavone@retrodev.com>
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|
1105 if (!param) { |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1106 fputs("a command requires a parameter\n", stderr); |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1107 break; |
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166
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1108 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1109 value = strtol(param, NULL, 16); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1110 insert_breakpoint(context, value, (uint8_t *)debugger); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1111 debugging = 0; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1112 break; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
diff
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|
1113 case 'd': |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1114 param = find_param(input_buf); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1115 if (!param) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1116 fputs("b command requires a parameter\n", stderr); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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1117 break; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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1118 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1119 value = atoi(param); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1120 this_bp = find_breakpoint_idx(&breakpoints, value); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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1121 if (!*this_bp) { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1122 fprintf(stderr, "Breakpoint %d does not exist\n", value); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1123 break; |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1124 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1125 new_bp = *this_bp; |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1126 *this_bp = (*this_bp)->next; |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1127 free(new_bp); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1128 break; |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1129 case 'p': |
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Mike Pavone <pavone@retrodev.com>
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166
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|
1130 strcpy(format, "%s: %d\n"); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1131 if (input_buf[1] == '/') { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1132 switch (input_buf[2]) |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1133 { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1134 case 'x': |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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166
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|
1135 case 'X': |
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|
1136 case 'd': |
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Mike Pavone <pavone@retrodev.com>
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|
1137 case 'c': |
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166
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|
1138 format[5] = input_buf[2]; |
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|
1139 break; |
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|
1140 default: |
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|
1141 fprintf(stderr, "Unrecognized format character: %c\n", input_buf[2]); |
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1142 } |
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|
1143 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1144 param = find_param(input_buf); |
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166
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|
1145 if (!param) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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|
1146 fputs("p command requires a parameter\n", stderr); |
ebcbdd1c4cc8
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166
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|
1147 break; |
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|
1148 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
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|
1149 if (param[0] == 'd' && param[1] >= '0' && param[1] <= '7') { |
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166
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|
1150 value = context->dregs[param[1]-'0']; |
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|
1151 } else if (param[0] == 'a' && param[1] >= '0' && param[1] <= '7') { |
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166
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changeset
|
1152 value = context->aregs[param[1]-'0']; |
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|
1153 } else if (param[0] == 'S' && param[1] == 'R') { |
ebcbdd1c4cc8
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166
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|
1154 value = (context->status << 8); |
ebcbdd1c4cc8
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166
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|
1155 for (int flag = 0; flag < 5; flag++) { |
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|
1156 value |= context->flags[flag] << (4-flag); |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1157 } |
185
b204fbed4efe
Add ability to print out current 68K cycle in debugger
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184
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|
1158 } else if(param[0] == 'c') { |
b204fbed4efe
Add ability to print out current 68K cycle in debugger
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184
diff
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|
1159 value = context->current_cycle; |
184
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|
1160 } else if (param[0] == '0' && param[1] == 'x') { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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1161 uint32_t p_addr = strtol(param+2, NULL, 16); |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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166
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1162 value = read_dma_value(p_addr/2); |
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1163 } else { |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1164 fprintf(stderr, "Unrecognized parameter to p: %s\n", param); |
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1165 break; |
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1166 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1167 printf(format, param, value); |
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1168 break; |
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1169 case 'n': |
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1170 //TODO: Deal with jmp, dbcc, rtr and rte |
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1171 if (inst.op == M68K_RTS) { |
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1172 after = (read_dma_value(context->aregs[7]/2) << 16) | read_dma_value(context->aregs[7]/2 + 1); |
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1173 } else if(inst.op == M68K_BCC && inst.extra.cond != COND_FALSE) { |
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|
1174 if (inst.extra.cond = COND_TRUE) { |
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|
1175 after = inst.address + 2 + inst.src.params.immed; |
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1176 } else { |
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1177 branch_f = after; |
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|
1178 branch_t = inst.address + 2 + inst.src.params.immed; |
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|
1179 insert_breakpoint(context, branch_t, (uint8_t *)debugger); |
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1180 } |
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1181 } |
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Fix a bunch of bugs in the CPU core, add a 68K debugger
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|
1182 insert_breakpoint(context, after, (uint8_t *)debugger); |
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1183 debugging = 0; |
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|
1184 break; |
327
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1185 case 'v': { |
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|
1186 genesis_context * gen = context->system; |
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|
1187 //VDP debug commands |
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|
1188 switch(input_buf[1]) |
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|
1189 { |
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|
1190 case 's': |
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|
1191 vdp_print_sprite_table(gen->vdp); |
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|
1192 break; |
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|
1193 case 'r': |
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|
1194 vdp_print_reg_explain(gen->vdp); |
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|
1195 break; |
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|
1196 } |
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|
1197 break; |
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|
1198 } |
184
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1199 case 'q': |
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1200 puts("Quitting"); |
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1201 exit(0); |
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1202 break; |
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|
1203 default: |
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|
1204 fprintf(stderr, "Unrecognized debugger command %s\n", input_buf); |
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|
1205 break; |
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1206 } |
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1207 } |
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|
1208 return context; |
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|
1209 } |
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|
1210 |
351
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|
1211 #define ROM_END 0x1A4 |
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|
1212 #define RAM_ID 0x1B0 |
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346
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|
1213 #define RAM_FLAGS 0x1B2 |
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|
1214 #define RAM_START 0x1B4 |
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|
1215 #define RAM_END 0x1B8 |
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346
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|
1216 #define MAX_MAP_CHUNKS (4+7+1) |
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|
1217 #define RAM_FLAG_MASK 0x1800 |
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|
1218 |
2f264d2a60c2
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346
diff
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|
1219 const memmap_chunk static_map[] = { |
2f264d2a60c2
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346
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|
1220 {0, 0x400000, 0xFFFFFF, 0, MMAP_READ, cart, |
343
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Mostly working runtime generation of memory map read/write functions
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342
diff
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|
1221 NULL, NULL, NULL, NULL}, |
467bfa17004a
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342
diff
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|
1222 {0xE00000, 0x1000000, 0xFFFF, 0, MMAP_READ | MMAP_WRITE | MMAP_CODE, ram, |
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342
diff
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|
1223 NULL, NULL, NULL, NULL}, |
467bfa17004a
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342
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|
1224 {0xC00000, 0xE00000, 0x1FFFFF, 0, 0, NULL, |
467bfa17004a
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Mike Pavone <pavone@retrodev.com>
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342
diff
changeset
|
1225 (read_16_fun)vdp_port_read, (write_16_fun)vdp_port_write, |
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
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342
diff
changeset
|
1226 (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>
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342
diff
changeset
|
1227 {0xA00000, 0xA12000, 0x1FFFF, 0, 0, NULL, |
467bfa17004a
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Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1228 (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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342
diff
changeset
|
1229 (read_8_fun)io_read, (write_8_fun)io_write} |
467bfa17004a
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342
diff
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|
1230 }; |
351
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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|
1231 |
2f264d2a60c2
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346
diff
changeset
|
1232 char * sram_filename; |
2f264d2a60c2
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346
diff
changeset
|
1233 genesis_context * genesis; |
2f264d2a60c2
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346
diff
changeset
|
1234 void save_sram() |
2f264d2a60c2
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346
diff
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|
1235 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1236 FILE * f = fopen(sram_filename, "wb"); |
2f264d2a60c2
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346
diff
changeset
|
1237 if (!f) { |
2f264d2a60c2
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346
diff
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|
1238 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
|
1239 return; |
2f264d2a60c2
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346
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|
1240 } |
2f264d2a60c2
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346
diff
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|
1241 uint32_t size = genesis->save_ram_mask+1; |
2f264d2a60c2
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346
diff
changeset
|
1242 if (genesis->save_flags != RAM_FLAG_BOTH) { |
2f264d2a60c2
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346
diff
changeset
|
1243 size/= 2; |
2f264d2a60c2
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346
diff
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|
1244 } |
2f264d2a60c2
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346
diff
changeset
|
1245 fwrite(genesis->save_ram, 1, size, f); |
2f264d2a60c2
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346
diff
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|
1246 fclose(f); |
2f264d2a60c2
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346
diff
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|
1247 printf("Saved SRAM to %s\n", sram_filename); |
2f264d2a60c2
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346
diff
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|
1248 } |
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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|
1249 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1250 void init_run_cpu(genesis_context * gen, int debug, FILE * address_log) |
2f264d2a60c2
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346
diff
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|
1251 { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1252 m68k_context context; |
2f264d2a60c2
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346
diff
changeset
|
1253 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
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|
1254 gen->m68k = &context; |
2f264d2a60c2
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346
diff
changeset
|
1255 memmap_chunk memmap[MAX_MAP_CHUNKS]; |
2f264d2a60c2
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346
diff
changeset
|
1256 uint32_t num_chunks; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1257 void * initial_mapped = NULL; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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changeset
|
1258 gen->save_ram = NULL; |
2f264d2a60c2
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changeset
|
1259 //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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346
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changeset
|
1260 //TODO: Handle non-standard mappers |
2f264d2a60c2
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|
1261 uint32_t size; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1262 if ((cart[RAM_ID/2] & 0xFF) == 'A' && (cart[RAM_ID/2] >> 8) == 'R') { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1263 //Cart has save RAM |
2f264d2a60c2
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346
diff
changeset
|
1264 uint32_t rom_end = ((cart[ROM_END/2] << 16) | cart[ROM_END/2+1]) + 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1265 uint32_t ram_start = (cart[RAM_START/2] << 16) | cart[RAM_START/2+1]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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|
1266 uint32_t ram_end = (cart[RAM_END/2] << 16) | cart[RAM_END/2+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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|
1267 uint16_t ram_flags = cart[RAM_FLAGS/2]; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1268 gen->save_flags = ram_flags & RAM_FLAG_MASK; |
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Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1269 memset(memmap, 0, sizeof(memmap_chunk)*2); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1270 if (ram_start >= rom_end) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1271 memmap[0].end = rom_end; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1272 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
|
1273 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
|
1274 memmap[0].buffer = cart; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1275 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1276 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
|
1277 ram_end |= 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1278 memmap[1].start = ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1279 gen->save_ram_mask = memmap[1].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
|
1280 ram_end += 1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1281 memmap[1].end = ram_end; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1282 memmap[1].flags = MMAP_READ | MMAP_WRITE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1283 size = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1284 if ((ram_flags & RAM_FLAG_MASK) == RAM_FLAG_ODD) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1285 memmap[1].flags |= MMAP_ONLY_ODD; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1286 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1287 } else if((ram_flags & RAM_FLAG_MASK) == 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
|
1288 memmap[1].flags |= MMAP_ONLY_EVEN; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1289 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1290 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1291 memmap[1].buffer = gen->save_ram = malloc(size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
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|
1292 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1293 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
|
1294 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+1; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1295 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1296 //Assume the standard Sega mapper for now |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1297 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
|
1298 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
|
1299 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
|
1300 memmap[0].buffer = cart; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1301 |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1302 memmap[1].start = 0x200000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1303 memmap[1].end = 0x400000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1304 memmap[1].mask = 0x1FFFFF; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1305 ram_start &= 0xFFFFFE; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1306 ram_end |= 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
|
1307 gen->save_ram_mask = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1308 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.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1309 memmap[1].ptr_index = 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1310 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.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1311 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>
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346
diff
changeset
|
1312 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
|
1313 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.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1314 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.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1315 num_chunks = sizeof(static_map)/sizeof(memmap_chunk)+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
|
1316 memset(memmap+num_chunks, 0, sizeof(memmap[num_chunks])); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1317 memmap[num_chunks].start = 0xA13000; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1318 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
|
1319 memmap[num_chunks].mask = 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
|
1320 memmap[num_chunks].write_16 = (write_16_fun)write_bank_reg_w; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1321 memmap[num_chunks].write_8 = (write_8_fun)write_bank_reg_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
|
1322 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
|
1323 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
|
1324 size = ram_end-ram_start; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1325 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
|
1326 size /= 2; |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1327 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
Mike Pavone <pavone@retrodev.com>
parents:
346
diff
changeset
|
1328 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
|
1329 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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346
diff
changeset
|
1330 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1331 } else { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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parents:
346
diff
changeset
|
1332 memcpy(memmap, static_map, sizeof(static_map)); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1333 num_chunks = sizeof(static_map)/sizeof(memmap_chunk); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1334 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1335 if (gen->save_ram) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1336 memset(gen->save_ram, 0, size); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1337 FILE * f = fopen(sram_filename, "rb"); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1338 if (f) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1339 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
|
1340 fclose(f); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1341 if (read > 0) { |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1342 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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346
diff
changeset
|
1343 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
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|
1344 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1345 atexit(save_sram); |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1346 } |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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diff
changeset
|
1347 init_x86_68k_opts(&opts, memmap, num_chunks); |
211 | 1348 opts.address_log = address_log; |
1349 init_68k_context(&context, opts.native_code_map, &opts); | |
1350 | |
288
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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280
diff
changeset
|
1351 context.video_context = gen->vdp; |
a8ee7934a1f8
Add a YM2612 stub implementation with just timers and status registers so that games that depend on it can run.
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diff
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|
1352 context.system = gen; |
211 | 1353 //cartridge ROM |
1354 context.mem_pointers[0] = cart; | |
342
13f994c88c34
Get frame time correct and frame rate sort of correct for EUR region
Mike Pavone <pavone@retrodev.com>
parents:
341
diff
changeset
|
1355 context.target_cycle = context.sync_cycle = mclks_per_frame/MCLKS_PER_68K; |
211 | 1356 //work RAM |
1357 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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|
1358 //save RAM/map |
2f264d2a60c2
Support for SRAM with SEGA mapper. Half-finished support for SRAM without SEGA mapper.
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346
diff
changeset
|
1359 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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diff
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|
1360 context.mem_pointers[3] = (uint16_t *)gen->save_ram; |
211 | 1361 uint32_t address; |
1362 address = cart[2] << 16 | cart[3]; | |
1363 translate_m68k_stream(address, &context); | |
1364 if (debug) { | |
1365 insert_breakpoint(&context, address, (uint8_t *)debugger); | |
1366 } | |
1367 m68k_reset(&context); | |
1368 } | |
1369 | |
340
58a085cfc6bd
Set window title based on ROM header name
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parents:
338
diff
changeset
|
1370 char title[64]; |
58a085cfc6bd
Set window title based on ROM header name
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338
diff
changeset
|
1371 |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1372 #define TITLE_START 0x150 |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1373 #define TITLE_END (TITLE_START+48) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1374 |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1375 void update_title() |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1376 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1377 uint16_t *last = cart + TITLE_END/2 - 1; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1378 while(last > cart + TITLE_START/2 && *last == 0x2020) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1379 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1380 last--; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1381 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1382 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
|
1383 char *cur = title; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1384 char last_char = ' '; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1385 for (; start != last; start++) |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1386 { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1387 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
|
1388 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1389 last_char = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1390 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1391 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
|
1392 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1393 last_char = *start & 0xFF; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1394 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1395 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1396 *(cur++) = *start >> 8; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1397 if ((*start & 0xFF) != ' ') { |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1398 *(cur++) = *start; |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1399 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1400 strcpy(cur, " - BlastEm"); |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1401 } |
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1402 |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1403 #define REGION_START 0x1F0 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1404 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1405 int detect_specific_region(char region) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1406 { |
346
aff29d50afd5
Fix a region detection bug
Mike Pavone <pavone@retrodev.com>
parents:
345
diff
changeset
|
1407 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
|
1408 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1409 |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1410 void detect_region() |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1411 { |
343
467bfa17004a
Mostly working runtime generation of memory map read/write functions
Mike Pavone <pavone@retrodev.com>
parents:
342
diff
changeset
|
1412 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
|
1413 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1414 } else if (detect_specific_region('J')) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1415 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
|
1416 } 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
|
1417 version_reg = NO_DISK | EUR; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1418 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1419 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1420 |
354
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1421 #define PSG_CLKS_NTSC (3579545/16) |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1422 #define PSG_CLKS_PAL (3546893/16) |
15dd6418fe67
Initial PSG support. Mostly works, noise channel is borked though.
Mike Pavone <pavone@retrodev.com>
parents:
351
diff
changeset
|
1423 |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1424 int main(int argc, char ** argv) |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1425 { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1426 if (argc < 2) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1427 fputs("Usage: blastem FILENAME\n", stderr); |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1428 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1429 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1430 if(!load_rom(argv[1])) { |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1431 fprintf(stderr, "Failed to open %s for reading\n", argv[1]); |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1432 return 1; |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1433 } |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1434 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
|
1435 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
|
1436 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
|
1437 int debug = 0; |
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
|
1438 FILE *address_log = NULL; |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1439 for (int i = 2; i < argc; i++) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1440 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
|
1441 switch(argv[i][1]) { |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1442 case 'd': |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1443 debug = 1; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1444 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
|
1445 case 'f': |
356
79e4b466e7d0
Get rid of debug puts and limit based on audio rather than frame rate by default.
Mike Pavone <pavone@retrodev.com>
parents:
354
diff
changeset
|
1446 frame_limit = 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
|
1447 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
|
1448 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
|
1449 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
|
1450 break; |
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
|
1451 case 'v': |
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1452 headless = 1; |
2b1c2c28b261
Added headless flag to avoid initializing SDL and opening a window when running tests.
Mike Pavone <pavone@retrodev.com>
parents:
211
diff
changeset
|
1453 break; |
265
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1454 case 'n': |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1455 z80_enabled = 0; |
c6d12878ea93
Add -n flag for disabling the Z80 core
Mike Pavone <pavone@retrodev.com>
parents:
264
diff
changeset
|
1456 break; |
341
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1457 case 'r': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1458 i++; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1459 if (i >= argc) { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1460 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
|
1461 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1462 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1463 switch (argv[i][0]) |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1464 { |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1465 case 'j': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1466 case 'J': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1467 version_reg = NO_DISK | JAP; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1468 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1469 case 'u': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1470 case 'U': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1471 version_reg = NO_DISK | USA; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1472 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1473 case 'e': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1474 case 'E': |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1475 version_reg = NO_DISK | EUR; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1476 break; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1477 default: |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1478 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
|
1479 return 1; |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1480 } |
6ad8e36de685
Support regions other than USA
Mike Pavone <pavone@retrodev.com>
parents:
340
diff
changeset
|
1481 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
|
1482 default: |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1483 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
|
1484 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
|
1485 } |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1486 } 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
|
1487 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
|
1488 } 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
|
1489 height = atoi(argv[i]); |
88
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1490 } |
c339559f1d4f
Forgot to add blastem main file earlier
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
1491 } |
340
58a085cfc6bd
Set window title based on ROM header name
Mike Pavone <pavone@retrodev.com>
parents:
338
diff
changeset
|
1492 update_title(); |
184
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1493 width = width < 320 ? 320 : width; |
ebcbdd1c4cc8
Fix a bunch of bugs in the CPU core, add a 68K debugger
Mike Pavone <pavone@retrodev.com>
parents:
166
diff
changeset
|
1494 height = height < 240 ? (width/320) * 240 : height; |
354
15dd6418fe67
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1495 uint32_t fps = 60; |
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1496 if (version_reg & 0x40) { |
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1497 mclks_per_frame = MCLKS_LINE * LINES_PAL; |
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1498 fps = 50; |
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1499 } |
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1500 if (!headless) { |
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1501 render_init(width, height, title, fps); |
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1502 } |
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1503 vdp_context v_context; |
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1504 |
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1505 init_vdp_context(&v_context); |
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1506 |
288
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1507 ym2612_context y_context; |
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1508 ym_init(&y_context); |
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1509 |
354
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1510 psg_context p_context; |
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1511 psg_init(&p_context, render_sample_rate(), fps == 60 ? PSG_CLKS_NTSC : PSG_CLKS_PAL, render_audio_buffer()); |
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1512 |
260
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1513 z80_context z_context; |
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1514 x86_z80_options z_opts; |
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1515 init_x86_z80_opts(&z_opts); |
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1516 init_z80_context(&z_context, &z_opts); |
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|
1517 |
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1518 genesis_context gen; |
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1519 |
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|
1520 z_context.system = &gen; |
260
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1521 z_context.mem_pointers[0] = z80_ram; |
342
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1522 z_context.sync_cycle = z_context.target_cycle = mclks_per_frame/MCLKS_PER_Z80; |
260
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1523 z_context.int_cycle = CYCLE_NEVER; |
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1524 z_context.mem_pointers[1] = z_context.mem_pointers[2] = (uint8_t *)cart; |
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1525 |
288
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1526 gen.z80 = &z_context; |
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1527 gen.vdp = &v_context; |
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1528 gen.ym = &y_context; |
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1529 gen.psg = &p_context; |
351
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1530 genesis = &gen; |
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|
1531 |
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|
1532 int fname_size = strlen(argv[1]); |
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1533 sram_filename = malloc(fname_size+6); |
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1534 memcpy(sram_filename, argv[1], fname_size); |
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1535 int i; |
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1536 for (i = fname_size-1; fname_size >= 0; --i) { |
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1537 if (sram_filename[i] == '.') { |
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1538 strcpy(sram_filename + i + 1, "sram"); |
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|
1539 break; |
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|
1540 } |
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|
1541 } |
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|
1542 if (i < 0) { |
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|
1543 strcpy(sram_filename + fname_size, ".sram"); |
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1544 } |
288
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|
1545 |
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|
1546 init_run_cpu(&gen, debug, address_log); |
88
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|
1547 return 0; |
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diff
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|
1548 } |