Shamusworld >> Repos - virtualjaguar/blob - src/jaguar.cpp

   1 //
   2 // JAGUAR.CPP
   3 //
   4 // by cal2
   5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
   6 // Cleanups and endian wrongness amelioration by James L. Hammons
   7 // Note: Endian wrongness probably stems from the MAME origins of this emu and
   8 //       the braindead way in which MAME handles memory. :-)
   9 //
  10
  11 #include "jaguar.h"
  12 //#include "m68kdasmAG.h"
  13 //#include "crc32.h"
  14
  15 //#define LOG_UNMAPPED_MEMORY_ACCESSES
  16 //#define SOUND_OUTPUT
  17 #define CPU_DEBUG
  18 #define JAGUAR_WIP_RELEASE
  19 #define JAGUAR_REAL_SPEED
  20 //Do this in makefile??? Yes! Could, but it's easier to define here...
  21 //#define LOG_UNMAPPED_MEMORY_ACCESSES
  22
  23 //
  24 // Private function prototypes
  25 //
  26
  27 unsigned jaguar_unknown_readbyte(unsigned address);
  28 unsigned jaguar_unknown_readword(unsigned address);
  29 void jaguar_unknown_writebyte(unsigned address, unsigned data);
  30 void jaguar_unknown_writeword(unsigned address, unsigned data);
  31 void M68K_show_context(void);
  32
  33 // These values are overridden by command line switches...
  34
  35 bool dsp_enabled = false;
  36 bool jaguar_use_bios = true;                            // Default is now to USE the BIOS
  37 uint32 jaguar_active_memory_dumps = 0;
  38
  39 uint32 jaguar_mainRom_crc32;
  40
  41 static uint32 m68k_cycles_per_scanline;
  42 static uint32 gpu_cycles_per_scanline;
  43 static uint32 dsp_cycles_per_scanline;
  44 static uint32 jaguar_screen_scanlines;
  45
  46 /*static*/ uint8 * jaguar_mainRam = NULL;
  47 /*static*/ uint8 * jaguar_bootRom = NULL;
  48 /*static*/ uint8 * jaguar_mainRom = NULL;
  49
  50
  51 //
  52 // Callback function to detect illegal instructions
  53 //
  54
  55 void M68KInstructionHook(void)
  56 {
  57         uint32 m68kPC = m68k_get_reg(NULL, M68K_REG_PC);
  58
  59         if (!m68k_is_valid_instruction(jaguar_word_read(m68kPC), M68K_CPU_TYPE_68000))
  60         {
  61                 WriteLog("\nEncountered illegal instruction at %08X!!!\n\nAborting!\n", m68kPC);
  62                 uint32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7);
  63                 WriteLog("M68K: Top of stack: %08X. Stack trace:\n", jaguar_long_read(topOfStack));
  64                 for(int i=0; i<10; i++)
  65                         WriteLog("%06X: %08X\n", topOfStack - (i * 4), jaguar_long_read(topOfStack - (i * 4)));
  66                 WriteLog("Jaguar: VBL interrupt is %s\n", ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64))) ? "enabled" : "disabled");
  67                 M68K_show_context();
  68                 log_done();
  69                 exit(0);
  70         }
  71 }
  72
  73 //
  74 // Musashi 68000 read/write/IRQ functions
  75 //
  76
  77 int irq_ack_handler(int level)
  78 {
  79         int vector = M68K_INT_ACK_AUTOVECTOR;
  80
  81         // The GPU/DSP/etc are probably *not* issuing an NMI, but it seems to work OK...
  82
  83         if (level == 7)
  84         {
  85                 m68k_set_irq(0);                                                // Clear the IRQ...
  86                 vector = 64;                                                    // Set user interrupt #0
  87         }
  88
  89         return vector;
  90 }
  91
  92 unsigned int m68k_read_memory_8(unsigned int address)
  93 {
  94 //WriteLog( "[RM8] Addr: %08X\n", address);
  95         unsigned int retVal = 0;
  96
  97         if ((address >= 0x000000) && (address <= 0x3FFFFF))
  98                 retVal = jaguar_mainRam[address];
  99         else if ((address >= 0x800000) && (address <= 0xDFFFFF))
 100                 retVal = jaguar_mainRom[address - 0x800000];
 101         else if ((address >= 0xE00000) && (address <= 0xE3FFFF))
 102                 retVal = jaguar_bootRom[address - 0xE00000];
 103         else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF))
 104                 retVal = cdrom_byte_read(address);
 105         else if ((address >= 0xF00000) && (address <= 0xF0FFFF))
 106                 retVal = tom_byte_read(address);
 107         else if ((address >= 0xF10000) && (address <= 0xF1FFFF))
 108                 retVal = jerry_byte_read(address);
 109         else
 110                 retVal = jaguar_unknown_readbyte(address);
 111
 112     return retVal;
 113 }
 114
 115 void gpu_dump_disassembly(void);
 116 void gpu_dump_registers(void);
 117
 118 unsigned int m68k_read_memory_16(unsigned int address)
 119 {
 120 //WriteLog( "[RM16] Addr: %08X\n", address);
 121 /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005FBA)
 122 //      for(int i=0; i<10000; i++)
 123         WriteLog("[M68K] In routine #6!\n");//*/
 124 //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00006696) // GPU Program #4
 125 //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005B3C)    // GPU Program #2
 126 /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005BA8)    // GPU Program #3
 127 {
 128         WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, tom_word_read(address));
 129         gpu_dump_registers();
 130         gpu_dump_disassembly();
 131 //      for(int i=0; i<10000; i++)
 132 //              WriteLog( "[M68K] About to run GPU!\n");
 133 }//*/
 134 //WriteLog( "[WM8  PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
 135 /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x00006696 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x000066A8)
 136 {
 137         if (address == 0x000066A0)
 138         {
 139                 gpu_dump_registers();
 140                 gpu_dump_disassembly();
 141         }
 142         for(int i=0; i<10000; i++)
 143                 WriteLog( "[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, tom_word_read(address));
 144 }//*/
 145     unsigned int retVal = 0;
 146
 147         if ((address >= 0x000000) && (address <= 0x3FFFFE))
 148                 retVal = (jaguar_mainRam[address] << 8) | jaguar_mainRam[address+1];
 149         else if ((address >= 0x800000) && (address <= 0xDFFFFE))
 150                 retVal = (jaguar_mainRom[address - 0x800000] << 8) | jaguar_mainRom[address - 0x800000 + 1];
 151         else if ((address >= 0xE00000) && (address <= 0xE3FFFE))
 152                 retVal = (jaguar_bootRom[address - 0xE00000] << 8) | jaguar_bootRom[address - 0xE00000 + 1];
 153         else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE))
 154                 retVal = cdrom_word_read(address);
 155         else if ((address >= 0xF00000) && (address <= 0xF0FFFE))
 156                 retVal = tom_word_read(address);
 157         else if ((address >= 0xF10000) && (address <= 0xF1FFFE))
 158                 retVal = jerry_word_read(address);
 159         else
 160 //{
 161 //WriteLog( "[RM16] Unknown address: %08X\n", address);
 162                 retVal = jaguar_unknown_readword(address);
 163 //}
 164
 165     return retVal;
 166 }
 167
 168 unsigned int m68k_read_memory_32(unsigned int address)
 169 {
 170 //WriteLog( "--> [RM32]\n");
 171     return (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2);
 172 }
 173
 174 void m68k_write_memory_8(unsigned int address, unsigned int value)
 175 {
 176 //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F))
 177 //      WriteLog("M68K: Writing %02X at %08X\n", value, address);
 178 //WriteLog( "[WM8  PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
 179         if ((address >= 0x000000) && (address <= 0x3FFFFF))
 180                 jaguar_mainRam[address] = value;
 181         else if ((address >= 0xDFFF00) && (address <= 0xDFFFFF))
 182                 cdrom_byte_write(address, value);
 183         else if ((address >= 0xF00000) && (address <= 0xF0FFFF))
 184                 tom_byte_write(address, value);
 185         else if ((address >= 0xF10000) && (address <= 0xF1FFFF))
 186                 jerry_byte_write(address, value);
 187         else
 188                 jaguar_unknown_writebyte(address, value);
 189 }
 190
 191 void m68k_write_memory_16(unsigned int address, unsigned int value)
 192 {
 193 extern int dsp_pc;//, dsp_control;
 194 if (address == 0xF1A116 && (value & 0x01))
 195 {
 196         WriteLog("  M68K(16): DSP is GO! (DSP_PC: %08X)\n\n", dsp_pc);
 197
 198 /*      static char buffer[512];
 199         uint32 j = 0xF1B000;
 200         while (j <= 0xF1BFFF)
 201         {
 202                 uint32 oldj = j;
 203                 j += dasmjag(JAGUAR_DSP, buffer, j);
 204                 WriteLog( "\t%08X: %s\n", oldj, buffer);
 205         }
 206         WriteLog( "\n");//*/
 207 }
 208 //else
 209 //      WriteLog("M68K(16): DSP halted... (Old value: %08X)\n", dsp_control);
 210
 211 //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F))
 212 //      WriteLog("M68K: Writing %04X at %08X\n", value, address);
 213 //WriteLog( "[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);
 214 //if (address >= 0xF02200 && address <= 0xF0229F)
 215 //      WriteLog("M68K: Writing to blitter --> %04X at %08X\n", value, address);
 216         if ((address >= 0x000000) && (address <= 0x3FFFFE))
 217         {
 218                 jaguar_mainRam[address] = value >> 8;
 219                 jaguar_mainRam[address + 1] = value & 0xFF;
 220         }
 221         else if ((address >= 0xDFFF00) && (address <= 0xDFFFFE))
 222                 cdrom_word_write(address, value);
 223         else if ((address >= 0xF00000) && (address <= 0xF0FFFE))
 224                 tom_word_write(address, value);
 225         else if ((address >= 0xF10000) && (address <= 0xF1FFFE))
 226                 jerry_word_write(address, value);
 227         else
 228                 jaguar_unknown_writeword(address, value);
 229 }
 230
 231 void m68k_write_memory_32(unsigned int address, unsigned int value)
 232 {
 233 extern int dsp_pc;//, dsp_control;
 234 if (address == 0xF1A114 && (value & 0x01))
 235         WriteLog("M68K(32): DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
 236 //else
 237 //      WriteLog("M68K(32): DSP halted... (Old value: %08X)\n", dsp_control);
 238
 239 //WriteLog( "--> [WM32]\n");
 240         m68k_write_memory_16(address, value >> 16);
 241         m68k_write_memory_16(address + 2, value & 0xFFFF);
 242 }
 243
 244
 245
 246 uint32 jaguar_get_handler(uint32 i)
 247 {
 248 //      return (jaguar_word_read(i<<2) << 16) | jaguar_word_read((i<<2) + 2);
 249 //      return (jaguar_word_read(i*4) << 16) | jaguar_word_read((i*4) + 2);
 250         return jaguar_long_read(i * 4);
 251 }
 252
 253 uint32 jaguar_interrupt_handler_is_valid(uint32 i)
 254 {
 255         uint32 handler = jaguar_get_handler(i);
 256         if (handler && (handler != 0xFFFFFFFF))
 257                 return 1;
 258         else
 259                 return 0;
 260 }
 261
 262 void M68K_show_context(void)
 263 {
 264         WriteLog( "\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC));
 265         for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++)
 266                 WriteLog( "\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i));
 267         WriteLog( "\n");
 268         for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++)
 269                 WriteLog( "\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
 270
 271         WriteLog( "68K disasm\n");
 272 //      jaguar_dasm(s68000readPC()-0x1000,0x20000);
 273         jaguar_dasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200);
 274 //      jaguar_dasm(0x5000, 0x14414);
 275         WriteLog( "..................\n");
 276
 277
 278         if (tom_irq_enabled(IRQ_VBLANK))
 279         {
 280                 WriteLog( "vblank int: enabled\n");
 281                 jaguar_dasm(jaguar_get_handler(64), 0x200);
 282         }
 283         else
 284                 WriteLog( "vblank int: disabled\n");
 285         WriteLog( "..................\n");
 286
 287         for(int i=0; i<256; i++)
 288                 WriteLog( "handler %03i at $%08X\n", i, (unsigned int)jaguar_get_handler(i));
 289 }
 290
 291 //
 292 // Unknown read/write byte/word routines
 293 //
 294
 295 void jaguar_unknown_writebyte(unsigned address, unsigned data)
 296 {
 297 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
 298         WriteLog( "jaguar: unknown byte %02X write at %08X (PC=%06X)\n", data, address, m68k_get_reg(NULL, M68K_REG_PC));
 299 #endif
 300 }
 301
 302 void jaguar_unknown_writeword(unsigned address, unsigned data)
 303 {
 304 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
 305         WriteLog( "jaguar: unknown word %04X write at %08X (PC=%06X)\n", data, address, m68k_get_reg(NULL, M68K_REG_PC));
 306 #endif
 307 }
 308
 309 unsigned jaguar_unknown_readbyte(unsigned address)
 310 {
 311 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
 312         WriteLog( "jaguar: unknown byte read at %08X (PC=%06X)\n", address, m68k_get_reg(NULL, M68K_REG_PC));
 313 #endif
 314     return 0xFF;
 315 }
 316
 317 unsigned jaguar_unknown_readword(unsigned address)
 318 {
 319 #ifdef LOG_UNMAPPED_MEMORY_ACCESSES
 320         WriteLog( "Jaguar: Unknown word read at %08X (PC=%06X)\n", address, m68k_get_reg(NULL, M68K_REG_PC));
 321 #endif
 322     return 0xFFFF;
 323 }
 324
 325 //
 326 // Disassemble M68K instructions at the given offset
 327 //
 328
 329 unsigned int m68k_read_disassembler_8(unsigned int address)
 330 {
 331         return m68k_read_memory_8(address);
 332 }
 333
 334 unsigned int m68k_read_disassembler_16(unsigned int address)
 335 {
 336         return m68k_read_memory_16(address);
 337 }
 338
 339 unsigned int m68k_read_disassembler_32(unsigned int address)
 340 {
 341         return m68k_read_memory_32(address);
 342 }
 343
 344 void jaguar_dasm(uint32 offset, uint32 qt)
 345 {
 346 #ifdef CPU_DEBUG
 347         static char buffer[2048];//, mem[64];
 348         int pc = offset, oldpc;
 349
 350         for(uint32 i=0; i<qt; i++)
 351         {
 352                 oldpc = pc;
 353 //              for(int j=0; j<64; j++)
 354 //                      mem[j^0x01] = jaguar_byte_read(pc + j);
 355
 356 //              pc += Dasm68000((char *)mem, buffer, 0);
 357                 pc += m68k_disassemble(buffer, pc, M68K_CPU_TYPE_68000);
 358                 WriteLog("%08X: %s\n", oldpc, buffer);
 359         }
 360 #endif
 361 }
 362
 363 unsigned jaguar_byte_read(unsigned int offset)
 364 {
 365         uint8 data = 0x00;
 366
 367         offset &= 0xFFFFFF;
 368         if (offset < 0x400000)
 369 //              data = (jaguar_mainRam[(offset^0x01) & 0x3FFFFF]);
 370                 data = jaguar_mainRam[offset & 0x3FFFFF];
 371         else if ((offset >= 0x800000) && (offset < 0xC00000))
 372 //              data = (jaguar_mainRom[(offset^0x01)-0x800000]);
 373                 data = jaguar_mainRom[offset - 0x800000];
 374 //      else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
 375         else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF))
 376                 data = cdrom_byte_read(offset);
 377         else if ((offset >= 0xE00000) && (offset < 0xE40000))
 378 //              data = (jaguar_bootRom[(offset^0x01) & 0x3FFFF]);
 379                 data = jaguar_bootRom[offset & 0x3FFFF];
 380         else if ((offset >= 0xF00000) && (offset < 0xF10000))
 381                 data = tom_byte_read(offset);
 382         else if ((offset >= 0xF10000) && (offset < 0xF20000))
 383                 data = jerry_byte_read(offset);
 384         else
 385                 data = jaguar_unknown_readbyte(offset);
 386
 387         return data;
 388 }
 389
 390 unsigned jaguar_word_read(unsigned int offset)
 391 {
 392 //TEMP--Mirror of F03000?
 393 /*if (offset >= 0xF0B000 && offset <= 0xF0BFFF)
 394 WriteLog( "[JWR16] --> Possible GPU RAM mirror access! [%08X]\n", offset);//*/
 395
 396         offset &= 0xFFFFFF;
 397         if (offset <= 0x3FFFFE)
 398         {
 399 //              return (jaguar_mainRam[(offset+1) & 0x3FFFFF] << 8) | jaguar_mainRam[(offset+0) & 0x3FFFFF];
 400                 return (jaguar_mainRam[(offset+0) & 0x3FFFFF] << 8) | jaguar_mainRam[(offset+1) & 0x3FFFFF];
 401         }
 402         else if ((offset >= 0x800000) && (offset <= 0xBFFFFE))
 403         {
 404                 offset -= 0x800000;
 405 //              return (jaguar_mainRom[offset+1] << 8) | jaguar_mainRom[offset+0];
 406                 return (jaguar_mainRom[offset+0] << 8) | jaguar_mainRom[offset+1];
 407         }
 408 //      else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
 409         else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE))
 410                 return cdrom_word_read(offset);
 411         else if ((offset >= 0xE00000) && (offset <= 0xE3FFFE))
 412 //              return *((uint16 *)&jaguar_bootRom[offset & 0x3FFFF]);
 413                 return (jaguar_bootRom[(offset+0) & 0x3FFFF] << 8) | jaguar_bootRom[(offset+1) & 0x3FFFF];
 414         else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE))
 415                 return tom_word_read(offset);
 416         else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE))
 417 //{
 418 //WriteLog("Reading from JERRY offset %08X...\n", offset);
 419                 return jerry_word_read(offset);
 420 //}
 421
 422         return jaguar_unknown_readword(offset);
 423 }
 424
 425 void jaguar_byte_write(unsigned offset, unsigned data)
 426 {
 427         offset &= 0xFFFFFF;
 428         if (offset < 0x400000)
 429         {
 430 //              jaguar_mainRam[(offset^0x01) & 0x3FFFFF] = data;
 431                 jaguar_mainRam[offset & 0x3FFFFF] = data;
 432                 return;
 433         }
 434 //      else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00))
 435         else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF))
 436         {
 437                 cdrom_byte_write(offset, data);
 438                 return;
 439         }
 440         else if ((offset >= 0xF00000) && (offset <= 0xF0FFFF))
 441         {
 442                 tom_byte_write(offset, data);
 443                 return;
 444         }
 445         else if ((offset >= 0xF10000) && (offset <= 0xF1FFFF))
 446         {
 447                 jerry_byte_write(offset, data);
 448                 return;
 449         }
 450
 451         jaguar_unknown_writebyte(offset, data);
 452 }
 453
 454 void jaguar_word_write(unsigned offset, unsigned data)
 455 {
 456 extern int dsp_pc;//, dsp_control;
 457 if (offset == 0xF1A116 && (data & 0x01))
 458         WriteLog("  JagWW: DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
 459 //else
 460 //      WriteLog("JagWW: DSP halted... (Old value: %08X)\n", dsp_control);
 461
 462 //extern int blit_start_log;
 463 //if (blit_start_log)
 464 /*{
 465         if (offset == 0x0674DE)
 466                 WriteLog( "[JWW16] Bad write starting @ 0674DE! [%04X]\n", data);
 467 }//*/
 468 //TEMP--Mirror of F03000?
 469 //if (offset >= 0xF0B000 && offset <= 0xF0BFFF)
 470 //WriteLog( "[JWW16] --> Possible GPU RAM mirror access! [%08X]", offset);
 471 //if ((offset >= 0x1FF020 && offset <= 0x1FF03F) || (offset >= 0x1FF820 && offset <= 0x1FF83F))
 472 //      WriteLog("JagWW: Writing %04X at %08X\n", data, offset);
 473         offset &= 0xFFFFFF;
 474
 475         if (offset <= 0x3FFFFE)
 476         {
 477 //              jaguar_mainRam[(offset+0) & 0x3FFFFF] = data & 0xFF;
 478 //              jaguar_mainRam[(offset+1) & 0x3FFFFF] = (data>>8) & 0xFF;
 479                 jaguar_mainRam[(offset+0) & 0x3FFFFF] = (data>>8) & 0xFF;
 480                 jaguar_mainRam[(offset+1) & 0x3FFFFF] = data & 0xFF;
 481                 return;
 482         }
 483         else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE))
 484         {
 485                 cdrom_word_write(offset, data);
 486                 return;
 487         }
 488         else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE))
 489         {
 490                 tom_word_write(offset, data);
 491                 return;
 492         }
 493         else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE))
 494         {
 495                 jerry_word_write(offset, data);
 496                 return;
 497         }
 498
 499         jaguar_unknown_writeword(offset, data);
 500 }
 501
 502 unsigned jaguar_long_read(unsigned int offset)
 503 {
 504 /*      uint32 data = jaguar_word_read(offset);
 505         data = (data<<16) | jaguar_word_read(offset+2);
 506         return data;*/
 507         return (jaguar_word_read(offset) << 16) | jaguar_word_read(offset+2);
 508 }
 509
 510 void jaguar_long_write(unsigned offset, unsigned data)
 511 {
 512 extern int dsp_pc;//, dsp_control;
 513 if (offset == 0xF1A114 && (data & 0x01))
 514         WriteLog("JagLW: DSP is GO! (DSP_PC: %08X)\n", dsp_pc);
 515 //else
 516 //      WriteLog("JagLW: DSP halted... (Old value: %08X)\n", dsp_control);
 517
 518 //extern int effect_start;
 519 // $10, $0C, $0A, $09 too much, $08 too little...
 520 //if (effect_start && offset == 0xF03000) data = (data & 0xFFFF0000) | (((data & 0xFFFF) + 0x0008) & 0xFFFF);
 521 //Doesn't work--offsets horizontally if (effect_start && offset == 0xF03004) data -= (0x300 * 8); // one line is $300
 522 //if (effect_start && offset == 0xF03000) data = 0x00000000;    // Let's try making the top/bottom *always* 0!
 523 //Interesting: it seems to pin half of the screen down (but too low)...
 524 //Definitely the fine scroll offsets (for left side of screen)...
 525
 526 //if ((offset >= 0x1FF020 && offset <= 0x1FF03F) || (offset >= 0x1FF820 && offset <= 0x1FF83F))
 527 //      WriteLog("JagLW: Writing %08X at %08X\n", data, offset);
 528         jaguar_word_write(offset, data >> 16);
 529         jaguar_word_write(offset+2, data & 0xFFFF);
 530 }
 531
 532 //
 533 // Jaguar initialization
 534 //
 535
 536 //void jaguar_init(const char * filename)
 537 void jaguar_init(void)
 538 {
 539 //      uint32 romsize;
 540
 541         jaguar_screen_scanlines = 525;                  // PAL screen size
 542         m68k_cycles_per_scanline = 13300000 / (jaguar_screen_scanlines * 60);
 543         gpu_cycles_per_scanline = (26591000 / 4) / (jaguar_screen_scanlines * 60);
 544         dsp_cycles_per_scanline = (26591000 / 4) / (jaguar_screen_scanlines * 60);
 545
 546         memory_malloc_secure((void **)&jaguar_mainRam, 0x400000, "Jaguar 68K CPU RAM");
 547         memory_malloc_secure((void **)&jaguar_bootRom, 0x040000, "Jaguar 68K CPU BIOS ROM");
 548         memory_malloc_secure((void **)&jaguar_mainRom, 0x600000, "Jaguar 68K CPU ROM");
 549         memset(jaguar_mainRam, 0x00, 0x400000);
 550 //      memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs...
 551         memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s...
 552
 553 //      jaguar_rom_load_to(jaguar_bootRom, jaguar_bootRom_path, &romsize);
 554 //      memcpy(jaguar_mainRam, jaguar_bootRom, 8);
 555 //      SET32(jaguar_mainRam, 0, 0x00200000);
 556
 557 #ifdef JAGUAR_WIP_RELEASE
 558 //      strcpy(romLoadDialog_filePath, filename);
 559 //      jaguar_load_cart(romLoadDialog_filePath, jaguar_mainRom, 0x0000, 0x00802000, 0);
 560
 561         if ((jaguar_mainRom_crc32 == 0x3966698f) || (jaguar_mainRom_crc32 == 0x5e705756)
 562                 || (jaguar_mainRom_crc32 == 0x2630cbc4) || (jaguar_mainRom_crc32 == 0xd46437e8)
 563                 || (jaguar_mainRom_crc32 == 0x2630cbc4))
 564                 dsp_enabled = true;
 565
 566         if ((jaguar_mainRom_crc32 == 0x6e90989f) || (jaguar_mainRom_crc32 == 0xfc8f0dcd)
 567                 || (jaguar_mainRom_crc32 == 0x2a512a83) || (jaguar_mainRom_crc32 == 0x41307601)
 568                 || (jaguar_mainRom_crc32 == 0x3c7bfda8) || (jaguar_mainRom_crc32 == 0x5e705756))
 569                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 570
 571         if (jaguar_mainRom_crc32 == 0x7ae20823)
 572         {
 573                 dsp_enabled = true;
 574                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 575                 dsp_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 576         }
 577         if (jaguar_mainRom_crc32 == 0xe21d0e2f)
 578         {
 579                 dsp_enabled = true;
 580                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 581                 dsp_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 582         }
 583         if (jaguar_mainRom_crc32 == 0x66f8914c)
 584         {
 585                 gpu_cycles_per_scanline = (26591000 / 1) /(jaguar_screen_scanlines * 60);
 586         }
 587         if (jaguar_mainRom_crc32 == 0x5a5b9c68)
 588         {
 589                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 590         }
 591         if (jaguar_mainRom_crc32 == 0xdcb0197a)
 592         {
 593                 dsp_enabled = false; // dsp not needed
 594                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 595                 //dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 596         }
 597         if ((jaguar_mainRom_crc32 == 0x3966698f) || (jaguar_mainRom_crc32 == 0xe21d0e2f))
 598                 dsp_enabled = true;
 599         if (jaguar_mainRom_crc32 == 0x5e705756)
 600         {
 601                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 602                 dsp_enabled = true;
 603         }
 604         if (jaguar_mainRom_crc32 == 0x2630cbc4)
 605         {
 606                 // ultra vortek
 607                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 608                 dsp_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 609                 dsp_enabled = true;
 610         }
 611         if ((jaguar_mainRom_crc32 == 0xd46437e8) || (jaguar_mainRom_crc32 == 0xba74c3ed))
 612         {
 613                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 614                 dsp_enabled = true;
 615         }
 616         if (jaguar_mainRom_crc32 == 0x6e90989f)
 617                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 618
 619         if (jaguar_mainRom_crc32 == 0x41307601)
 620         {
 621                 gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 622         }
 623
 624         if (jaguar_mainRom_crc32 == 0x8483392b)
 625         {
 626                 dsp_enabled = true;
 627         }
 628
 629 #else   // #ifdef JAGUAR_WIP_RELEASE
 630 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/flashback.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 631 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Pinball Fantasies.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 632 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/alien vs predator (1994).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 633 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/cannon fodder (1995) (computer west).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 634 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/double dragon v (1995) (williams).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 635 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Dragon - The Bruce Lee Story.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 636 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Syndicate.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 637 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Theme Park.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 638 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Brutal Sports Football.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 639 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/International Sensible Soccer.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 640 //  jaguar_load_cart("C:/ftp/jaguar/roms/roms/Defender 2000.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 641 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Fever Pitch Soccer.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 642 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Rayman.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 643 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Tempest 2000.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 644 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/zool 2 (1994).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 645 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Bubsy - Fractured Furry Tails.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 646 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Raiden.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 647 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Dino Olympics.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 648 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/I-War.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 649 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Attack of the Mutant Penguins.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 650 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Cybermorph.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 651 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Troy Aikman NFL Football (1995) (Williams).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 652 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Power Drive Rally (1995) (TWI).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 653 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Zoop! (1996).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 654 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Missile Command 3D.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 655 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Hover Strike.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 656 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/worms.bin",jaguar_mainRom,0x0000, 0x20000080,0);
 657 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Atari Kart.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 658 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/native.bin",jaguar_mainRam,0x5000, 0x50000000,0x00);
 659
 660         if (jaguar_mainRom_crc32==0xe21d0e2f)
 661         {
 662                 dsp_enabled=true;
 663                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 664                 dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 665         }
 666         if (jaguar_mainRom_crc32==0x66f8914c)
 667         {
 668                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 669         }
 670         if (jaguar_mainRom_crc32==0x5a5b9c68)
 671         {
 672                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 673         }
 674 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Super Cross 3D.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 675         if (jaguar_mainRom_crc32==0xdcb0197a)
 676         {
 677                 dsp_enabled=true; // dsp not needed
 678                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 679                 //dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 680         }
 681 //  jaguar_load_cart("C:/ftp/jaguar/roms/roms/wolfenstein 3d (1994).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 682         if ((jaguar_mainRom_crc32==0x3966698f)||(jaguar_mainRom_crc32==0xe21d0e2f))
 683                 dsp_enabled=true;
 684 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/NBA JAM.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 685 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Doom - Evil Unleashed.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 686         if (jaguar_mainRom_crc32==0x5e705756)
 687         {
 688                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 689                 dsp_enabled=true;
 690         }
 691 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Ultra Vortek.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 692         if (jaguar_mainRom_crc32==0x2630cbc4)
 693         {
 694                 // ultra vortek
 695                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 696                 dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 697                 dsp_enabled=true;
 698         }
 699 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/fflbeta.rom",jaguar_mainRom,0x0000, 0x20000080,0);
 700 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Fight for Your Life.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 701         if ((jaguar_mainRom_crc32==0xd46437e8)||(jaguar_mainRom_crc32==0xba74c3ed))
 702         {
 703                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 704 //              dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 705                 dsp_enabled=true;
 706         }
 707 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Pitfall - The Mayan Adventure.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 708         if (jaguar_mainRom_crc32==0x6e90989f)
 709                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 710
 711 // missing some sprites
 712 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Crescent Galaxy.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 713         if (jaguar_mainRom_crc32==0x41307601)
 714         {
 715                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 716         }
 717
 718 // missing vertical bar shades
 719 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Phase Zero (2000) (PD).rom",jaguar_mainRom,0x0000, 0x20000080,0);
 720         if (jaguar_mainRom_crc32==0x8483392b)
 721         {
 722                 dsp_enabled=true;
 723         }
 724 // cpu/dsp/gpu synchronization problems
 725
 726
 727 // locks up during the game
 728 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Club Drive.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 729
 730 // no parallax floor, locks up at the start of the game
 731 // jaguar_load_cart("C:/ftp/jaguar/roms/roms/Kasumi Ninja.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 732
 733 // displaying the sound control dialog. no way to exit from it
 734 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Checkered Flag.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 735
 736 // no 3d
 737 //  jaguar_load_cart("C:/ftp/jaguar/roms/roms/Iron Soldier.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 738
 739 // locks up at the start of the game
 740 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Super Burnout.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 741         if (jaguar_mainRom_crc32==0x20ae75f4)
 742         {
 743                 dsp_enabled=true;
 744                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 745                 dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 746         }
 747 // locks up at the start of the game
 748 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Val D'Isere Skiing & Snowboarding (1994).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 749         if (jaguar_mainRom_crc32==0x4664ebd1)
 750         {
 751                 dsp_enabled=true;
 752         }
 753
 754 // fonctionne avec le gpu et le dsp activés et gpu à frequence nominale, et dsp à 1/4 de la frequence nominale
 755 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/white men can't jump (1995).jag",jaguar_mainRom,0x0000, 0x20000080,0);
 756         if (jaguar_mainRom_crc32==0x7ae20823)
 757         {
 758                 dsp_enabled=true;
 759                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 760         }
 761 // not working at all
 762 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/Flip Out.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 763         if (jaguar_mainRom_crc32==0x6f57dcd2)
 764         {
 765                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 766                 dsp_enabled=false;
 767
 768         }
 769
 770         jaguar_load_cart("C:/ftp/jaguar/roms/roms/Ruiner.JAG",jaguar_mainRom,0x0000, 0x20000080,0);
 771         if (jaguar_mainRom_crc32==0x6a7c7430)
 772         {
 773                 dsp_enabled=true;
 774         }
 775
 776         if (jaguar_mainRom_crc32==0x2f032271)
 777         {
 778                 dsp_enabled=true;
 779                 dsp_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 780                 gpu_cycles_per_scanline=(26591000/1) /((jaguar_screen_scanlines)*60);
 781         }
 782 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/tetris.bin",jaguar_mainRam,0x4fe4, 0x50000000,0x00);
 783 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/painter.bin",jaguar_mainRam,0xffe4, 0x00000001,0x00);
 784 //      jaguar_load_cart("./roms/jagcd.rom",jaguar_mainRom,0x0000, 0x20000080,0);
 785
 786 //      jaguar_load_cart("cart.jag",jaguar_mainRom,0x0000, 0x20000080,0);
 787
 788
 789 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\Brain Dead 13.cdi");
 790 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\baldies.cdi");
 791 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\mystdemo.cdi");
 792 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\battlemorph.cdi");
 793 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\primalrage.cdi");
 794 //      cd_bios_boot("C:\\ftp\\jaguar\\cd\\Dragons Lair.cdi");
 795
 796 //      jaguar_load_cart("C:/ftp/jaguar/roms/roms/raw.jag",jaguar_mainRam,0x4000, 0x40000000,0x00);
 797 #endif  // #ifdef JAGUAR_WIP_RELEASE
 798
 799 #ifdef JAGUAR_REAL_SPEED
 800         gpu_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 801         dsp_cycles_per_scanline = (26591000 / 1) / (jaguar_screen_scanlines * 60);
 802 #endif
 803 #ifdef SOUND_OUTPUT
 804         ws_audio_init();
 805 #endif
 806
 807         m68k_set_cpu_type(M68K_CPU_TYPE_68000);
 808         gpu_init();
 809         dsp_init();
 810         tom_init();
 811         jerry_init();
 812         cdrom_init();
 813 }
 814
 815 void jaguar_done(void)
 816 {
 817 //#ifdef CPU_DEBUG
 818 //      for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++)
 819 //              WriteLog("\tA%i = 0x%.8x\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i));
 820         uint32 topOfStack = m68k_get_reg(NULL, M68K_REG_A7);
 821         WriteLog("M68K: Top of stack: %08X. Stack trace:\n", jaguar_long_read(topOfStack));
 822         for(int i=0; i<10; i++)
 823                 WriteLog("%06X: %08X\n", topOfStack - (i * 4), jaguar_long_read(topOfStack - (i * 4)));
 824 //      WriteLog("Jaguar: CD BIOS version %04X\n", jaguar_word_read(0x3004));
 825         WriteLog("Jaguar: VBL interrupt is %s\n", ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64))) ? "enabled" : "disabled");
 826         M68K_show_context();
 827 //#endif
 828 #ifdef SOUND_OUTPUT
 829         ws_audio_done();
 830 #endif
 831         cd_bios_done();
 832         cdrom_done();
 833         tom_done();
 834         jerry_done();
 835         memory_free(jaguar_mainRom);
 836         memory_free(jaguar_bootRom);
 837         memory_free(jaguar_mainRam);
 838 }
 839
 840 void jaguar_reset(void)
 841 {
 842         if (jaguar_use_bios)
 843                 memcpy(jaguar_mainRam, jaguar_bootRom, 8);
 844         else
 845         {
 846                 SET32(jaguar_mainRam, 4, 0x00802000);
 847                 // Handle PD stuff...
 848                 // This should definitely go elsewhere (like in the cart load section)!
 849                 if (jaguar_mainRom[0] == 0x60 && jaguar_mainRom[1] == 0x1A)
 850                 {
 851                         uint32 runAddress = GET32(jaguar_mainRom, 0x2A);
 852                         uint32 progLength = GET32(jaguar_mainRom, 0x02);
 853                         WriteLog("Setting up PD ROM... Run address: %08X, length: %08X\n", runAddress, progLength);
 854                         memcpy(jaguar_mainRam + runAddress, jaguar_mainRom + 0x2E, progLength);
 855                         SET32(jaguar_mainRam, 4, runAddress);
 856                 }
 857         }
 858
 859 //      WriteLog("jaguar_reset():\n");
 860 #ifdef SOUND_OUTPUT
 861         ws_audio_reset();
 862 #endif
 863         cd_bios_reset();
 864         tom_reset();
 865         jerry_reset();
 866         gpu_reset();
 867         dsp_reset();
 868         cdrom_reset();
 869     m68k_pulse_reset();                         // Reset the 68000
 870         WriteLog( "\t68K PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7));
 871 }
 872
 873 void jaguar_reset_handler(void)
 874 {
 875 }
 876
 877 void jaguar_exec(int16 * backbuffer, bool render)
 878 {
 879         uint32 i, vblank_duration = tom_get_vdb();
 880
 881         // vblank
 882         if ((tom_irq_enabled(IRQ_VBLANK)) && (jaguar_interrupt_handler_is_valid(64)))
 883         {
 884                 if (jaguar_word_read(0xF0004E) != 0xFFFF)
 885                 {
 886                         tom_set_pending_video_int();
 887 //                      s68000interrupt(7, IRQ_VBLANK+64);
 888 //                      s68000flushInterrupts();
 889                         m68k_set_irq(7);                                        // IRQ_VBLANK+64??? Not autovectored??? No.
 890 // Could set a global variable here, to signal that this is a VBLANK interrupt...
 891 // Then again, since IRQ_VBLANK is set to zero, this would not be necessary in this case.
 892                 }
 893         }
 894
 895         for(i=0; i<vblank_duration; i++)
 896         {
 897 /*              uint32 invalid_instruction_address = s68000exec(m68k_cycles_per_scanline);
 898                 if (invalid_instruction_address != 0x80000000)
 899                         cd_bios_process(invalid_instruction_address);*/
 900                 m68k_execute(m68k_cycles_per_scanline);
 901                 // No CD handling... !!! FIX !!!
 902
 903                 cd_bios_exec(i);
 904                 tom_pit_exec(m68k_cycles_per_scanline);
 905                 tom_exec_scanline(backbuffer, i, false);
 906                 jerry_pit_exec(m68k_cycles_per_scanline);
 907                 jerry_i2s_exec(m68k_cycles_per_scanline);
 908                 gpu_exec(gpu_cycles_per_scanline);
 909                 if (dsp_enabled)
 910                         dsp_exec(dsp_cycles_per_scanline);
 911         }
 912
 913         for (; i<jaguar_screen_scanlines; i++)
 914         {
 915 /*              uint32 invalid_instruction_address = s68000exec(m68k_cycles_per_scanline);
 916                 if (invalid_instruction_address != 0x80000000)
 917                         cd_bios_process(invalid_instruction_address);*/
 918                 m68k_execute(m68k_cycles_per_scanline);
 919                 // No CD handling... !!! FIX !!!
 920                 cd_bios_exec(i);
 921                 tom_pit_exec(m68k_cycles_per_scanline);
 922                 jerry_pit_exec(m68k_cycles_per_scanline);
 923                 jerry_i2s_exec(m68k_cycles_per_scanline);
 924                 tom_exec_scanline(backbuffer, i, render);
 925                 gpu_exec(gpu_cycles_per_scanline);
 926                 if (dsp_enabled)
 927                         dsp_exec(dsp_cycles_per_scanline);
 928                 backbuffer += tom_width;
 929         }
 930 #ifdef SOUND_OUTPUT
 931         system_sound_update();
 932 #endif
 933 }
 934
 935 // Temp debugging stuff
 936
 937 void DumpMainMemory(void)
 938 {
 939         FILE * fp = fopen("./memdump.bin", "wb");
 940
 941         if (fp == NULL)
 942                 return;
 943
 944         fwrite(jaguar_mainRam, 1, 0x400000, fp);
 945         fclose(fp);
 946 }
 947
 948 uint8 * GetRamPtr(void)
 949 {
 950         return jaguar_mainRam;
 951 }