| 1 | // |
| 2 | // JAGUAR.CPP |
| 3 | // |
| 4 | // Originally by David Raingeard (Cal2) |
| 5 | // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Carwin Jones (BeOS) |
| 6 | // Cleanups and endian wrongness amelioration by James Hammons |
| 7 | // Note: Endian wrongness probably stems from the MAME origins of this emu and |
| 8 | // the braindead way in which MAME handled memory when this was written. :-) |
| 9 | // |
| 10 | // JLH = James Hammons |
| 11 | // JPM = Jean-Paul Mari |
| 12 | // |
| 13 | // WHO WHEN WHAT |
| 14 | // --- ---------- ----------------------------------------------------------- |
| 15 | // JLH 11/25/2009 Major rewrite of memory subsystem and handlers |
| 16 | // JPM 09/04/2018 Added the new Models and BIOS handler |
| 17 | // JPM 10/13/2018 Added breakpoints features |
| 18 | // JPM Aug./2019 Fix specific breakpoint for ROM cartridge or unknown memory location writing; added a specific breakpoint for the M68K illegal & unimplemented instruction, unknown exceptions and address error exceptions |
| 19 | // JPM Aug./2019 Fix potential emulator freeze after an exception has occured |
| 20 | // JPM Feb./2021 Added a specific breakpoint for the M68K bus error exception, and a M68K exception catch detection |
| 21 | // JPM Apr./2021 Keep number of M68K cycles used in tracing mode |
| 22 | // |
| 23 | |
| 24 | |
| 25 | #define NEWMODELSBIOSHANDLER // New Jaguar models and bios usage handler |
| 26 | |
| 27 | |
| 28 | #include "jaguar.h" |
| 29 | //#include <QApplication> |
| 30 | #include <QtWidgets/QMessageBox> |
| 31 | #include <time.h> |
| 32 | #include <SDL.h> |
| 33 | #include "SDL_opengl.h" |
| 34 | #include "blitter.h" |
| 35 | #include "cdrom.h" |
| 36 | #include "dac.h" |
| 37 | #include "dsp.h" |
| 38 | #include "eeprom.h" |
| 39 | #include "event.h" |
| 40 | #include "foooked.h" |
| 41 | #include "gpu.h" |
| 42 | #include "jerry.h" |
| 43 | #include "joystick.h" |
| 44 | #include "log.h" |
| 45 | #include "m68000/m68kinterface.h" |
| 46 | //#include "memory.h" |
| 47 | #include "memtrack.h" |
| 48 | #include "mmu.h" |
| 49 | #include "settings.h" |
| 50 | #include "tom.h" |
| 51 | //#include "debugger/BreakpointsWin.h" |
| 52 | #ifdef NEWMODELSBIOSHANDLER |
| 53 | #include "modelsBIOS.h" |
| 54 | #endif |
| 55 | |
| 56 | #define CPU_DEBUG |
| 57 | //Do this in makefile??? Yes! Could, but it's easier to define here... |
| 58 | //#define LOG_UNMAPPED_MEMORY_ACCESSES |
| 59 | //#define ABORT_ON_UNMAPPED_MEMORY_ACCESS |
| 60 | //#define ABORT_ON_ILLEGAL_INSTRUCTIONS |
| 61 | //#define ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION |
| 62 | #define CPU_DEBUG_MEMORY |
| 63 | //#define LOG_CD_BIOS_CALLS |
| 64 | #define CPU_DEBUG_TRACING |
| 65 | #define ALPINE_FUNCTIONS |
| 66 | |
| 67 | // Private function prototypes |
| 68 | |
| 69 | unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who = UNKNOWN); |
| 70 | unsigned jaguar_unknown_readword(unsigned address, uint32_t who = UNKNOWN); |
| 71 | void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who = UNKNOWN); |
| 72 | void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who = UNKNOWN); |
| 73 | void M68K_show_context(void); |
| 74 | #if 0 |
| 75 | void M68K_Debughalt(void); |
| 76 | #endif |
| 77 | |
| 78 | // External variables |
| 79 | |
| 80 | #ifdef CPU_DEBUG_MEMORY |
| 81 | extern bool startMemLog; // Set by "e" key |
| 82 | extern int effect_start; |
| 83 | extern int effect_start2, effect_start3, effect_start4, effect_start5, effect_start6; |
| 84 | #endif |
| 85 | |
| 86 | // Really, need to include memory.h for this, but it might interfere with some stuff... |
| 87 | extern uint8_t jagMemSpace[]; |
| 88 | |
| 89 | // Internal variables |
| 90 | |
| 91 | uint32_t jaguar_active_memory_dumps = 0; |
| 92 | |
| 93 | uint32_t jaguarMainROMCRC32, jaguarROMSize, jaguarRunAddress; |
| 94 | bool jaguarCartInserted = false; |
| 95 | bool lowerField = false; |
| 96 | |
| 97 | #ifdef CPU_DEBUG_MEMORY |
| 98 | uint8_t writeMemMax[0x400000], writeMemMin[0x400000]; |
| 99 | uint8_t readMem[0x400000]; |
| 100 | uint32_t returnAddr[4000], raPtr = 0xFFFFFFFF; |
| 101 | #endif |
| 102 | |
| 103 | uint32_t pcQueue[0x400]; |
| 104 | uint32_t a0Queue[0x400]; |
| 105 | uint32_t a1Queue[0x400]; |
| 106 | uint32_t a2Queue[0x400]; |
| 107 | uint32_t a3Queue[0x400]; |
| 108 | uint32_t a4Queue[0x400]; |
| 109 | uint32_t a5Queue[0x400]; |
| 110 | uint32_t a6Queue[0x400]; |
| 111 | uint32_t a7Queue[0x400]; |
| 112 | uint32_t d0Queue[0x400]; |
| 113 | uint32_t d1Queue[0x400]; |
| 114 | uint32_t d2Queue[0x400]; |
| 115 | uint32_t d3Queue[0x400]; |
| 116 | uint32_t d4Queue[0x400]; |
| 117 | uint32_t d5Queue[0x400]; |
| 118 | uint32_t d6Queue[0x400]; |
| 119 | uint32_t d7Queue[0x400]; |
| 120 | uint32_t srQueue[0x400]; |
| 121 | uint32_t pcQPtr = 0; |
| 122 | bool startM68KTracing = false; |
| 123 | |
| 124 | // Breakpoint on memory access vars (exported) |
| 125 | bool bpmActive = false; |
| 126 | bool bpmSaveActive = false; |
| 127 | size_t bpmHitCounts; |
| 128 | uint32_t bpmAddress1; |
| 129 | S_BrkInfo *brkInfo; |
| 130 | size_t brkNbr; |
| 131 | |
| 132 | bool frameDone; |
| 133 | |
| 134 | // |
| 135 | // Callback function to detect illegal instructions |
| 136 | // |
| 137 | void GPUDumpDisassembly(void); |
| 138 | void GPUDumpRegisters(void); |
| 139 | static bool start = false; |
| 140 | |
| 141 | void M68KInstructionHook(void) |
| 142 | { |
| 143 | uint32_t m68kPC = m68k_get_reg(NULL, M68K_REG_PC); |
| 144 | // Temp, for comparing... |
| 145 | { |
| 146 | /* static char buffer[2048];//, mem[64]; |
| 147 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); |
| 148 | printf("%08X: %s\n", m68kPC, buffer);//*/ |
| 149 | } |
| 150 | //JaguarDasm(m68kPC, 1); |
| 151 | //Testing Hover Strike... |
| 152 | #if 0 |
| 153 | //Dasm(regs.pc, 1); |
| 154 | static int hitCount = 0; |
| 155 | static int inRoutine = 0; |
| 156 | static int instSeen; |
| 157 | |
| 158 | //if (regs.pc == 0x80340A) |
| 159 | if (m68kPC == 0x803416) |
| 160 | { |
| 161 | hitCount++; |
| 162 | inRoutine = 1; |
| 163 | instSeen = 0; |
| 164 | printf("%i: $80340A start. A0=%08X, A1=%08X ", hitCount, m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1)); |
| 165 | } |
| 166 | else if (m68kPC == 0x803422) |
| 167 | { |
| 168 | inRoutine = 0; |
| 169 | printf("(%i instructions)\n", instSeen); |
| 170 | } |
| 171 | |
| 172 | if (inRoutine) |
| 173 | instSeen++; |
| 174 | #endif |
| 175 | |
| 176 | // For code tracing... |
| 177 | #ifdef CPU_DEBUG_TRACING |
| 178 | if (startM68KTracing) |
| 179 | { |
| 180 | static char buffer[2048]; |
| 181 | |
| 182 | m68k_disassemble(buffer, m68kPC, 0, 1); |
| 183 | WriteLog("%06X: %s\n", m68kPC, buffer); |
| 184 | } |
| 185 | #endif |
| 186 | |
| 187 | // For tracebacks... |
| 188 | // Ideally, we'd save all the registers as well... |
| 189 | pcQueue[pcQPtr] = m68kPC; |
| 190 | a0Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A0); |
| 191 | a1Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A1); |
| 192 | a2Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A2); |
| 193 | a3Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A3); |
| 194 | a4Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A4); |
| 195 | a5Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A5); |
| 196 | a6Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A6); |
| 197 | a7Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_A7); |
| 198 | d0Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D0); |
| 199 | d1Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D1); |
| 200 | d2Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D2); |
| 201 | d3Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D3); |
| 202 | d4Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D4); |
| 203 | d5Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D5); |
| 204 | d6Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D6); |
| 205 | d7Queue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_D7); |
| 206 | srQueue[pcQPtr] = m68k_get_reg(NULL, M68K_REG_SR); |
| 207 | pcQPtr++; |
| 208 | pcQPtr &= 0x3FF; |
| 209 | |
| 210 | if (m68kPC & 0x01) // Oops! We're fetching an odd address! |
| 211 | { |
| 212 | WriteLog("M68K: Attempted to execute from an odd address!\n\nBacktrace:\n\n"); |
| 213 | |
| 214 | static char buffer[2048]; |
| 215 | for(int i=0; i<0x400; i++) |
| 216 | { |
| 217 | // WriteLog("[A2=%08X, D0=%08X]\n", a2Queue[(pcQPtr + i) & 0x3FF], d0Queue[(pcQPtr + i) & 0x3FF]); |
| 218 | WriteLog("[A0=%08X, A1=%08X, A2=%08X, A3=%08X, A4=%08X, A5=%08X, A6=%08X, A7=%08X, D0=%08X, D1=%08X, D2=%08X, D3=%08X, D4=%08X, D5=%08X, D6=%08X, D7=%08X, SR=%04X]\n", a0Queue[(pcQPtr + i) & 0x3FF], a1Queue[(pcQPtr + i) & 0x3FF], a2Queue[(pcQPtr + i) & 0x3FF], a3Queue[(pcQPtr + i) & 0x3FF], a4Queue[(pcQPtr + i) & 0x3FF], a5Queue[(pcQPtr + i) & 0x3FF], a6Queue[(pcQPtr + i) & 0x3FF], a7Queue[(pcQPtr + i) & 0x3FF], d0Queue[(pcQPtr + i) & 0x3FF], d1Queue[(pcQPtr + i) & 0x3FF], d2Queue[(pcQPtr + i) & 0x3FF], d3Queue[(pcQPtr + i) & 0x3FF], d4Queue[(pcQPtr + i) & 0x3FF], d5Queue[(pcQPtr + i) & 0x3FF], d6Queue[(pcQPtr + i) & 0x3FF], d7Queue[(pcQPtr + i) & 0x3FF], srQueue[(pcQPtr + i) & 0x3FF]); |
| 219 | m68k_disassemble(buffer, pcQueue[(pcQPtr + i) & 0x3FF], 0, 1);//M68K_CPU_TYPE_68000); |
| 220 | WriteLog("\t%08X: %s\n", pcQueue[(pcQPtr + i) & 0x3FF], buffer); |
| 221 | } |
| 222 | WriteLog("\n"); |
| 223 | |
| 224 | uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); |
| 225 | WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); |
| 226 | for(int i=0; i<10; i++) |
| 227 | WriteLog("%06X: %08X\n", topOfStack - (i * 4), JaguarReadLong(topOfStack - (i * 4))); |
| 228 | WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); |
| 229 | M68K_show_context(); |
| 230 | LogDone(); |
| 231 | exit(0); |
| 232 | } |
| 233 | |
| 234 | // Disassemble everything |
| 235 | /* { |
| 236 | static char buffer[2048]; |
| 237 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); |
| 238 | WriteLog("%08X: %s", m68kPC, buffer); |
| 239 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", |
| 240 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), |
| 241 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); |
| 242 | }//*/ |
| 243 | /* if (m68kPC >= 0x807EC4 && m68kPC <= 0x807EDB) |
| 244 | { |
| 245 | static char buffer[2048]; |
| 246 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); |
| 247 | WriteLog("%08X: %s", m68kPC, buffer); |
| 248 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", |
| 249 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), |
| 250 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); |
| 251 | }//*/ |
| 252 | /* if (m68kPC == 0x8D0E48 && effect_start5) |
| 253 | { |
| 254 | WriteLog("\nM68K: At collision detection code. Exiting!\n\n"); |
| 255 | GPUDumpRegisters(); |
| 256 | GPUDumpDisassembly(); |
| 257 | log_done(); |
| 258 | exit(0); |
| 259 | }//*/ |
| 260 | /* uint16_t opcode = JaguarReadWord(m68kPC); |
| 261 | if (opcode == 0x4E75) // RTS |
| 262 | { |
| 263 | if (startMemLog) |
| 264 | // WriteLog("Jaguar: Returning from subroutine to %08X\n", JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7))); |
| 265 | { |
| 266 | uint32_t addr = JaguarReadLong(m68k_get_reg(NULL, M68K_REG_A7)); |
| 267 | bool found = false; |
| 268 | if (raPtr != 0xFFFFFFFF) |
| 269 | { |
| 270 | for(uint32_t i=0; i<=raPtr; i++) |
| 271 | { |
| 272 | if (returnAddr[i] == addr) |
| 273 | { |
| 274 | found = true; |
| 275 | break; |
| 276 | } |
| 277 | } |
| 278 | } |
| 279 | |
| 280 | if (!found) |
| 281 | returnAddr[++raPtr] = addr; |
| 282 | } |
| 283 | }//*/ |
| 284 | |
| 285 | //Flip Out! debugging... |
| 286 | //805F46, 806486 |
| 287 | /* |
| 288 | 00805FDC: movea.l #$9c6f8, A0 D0=00100010, A0=00100000 |
| 289 | 00805FE2: move.w #$10, (A0)+ D0=00100010, A0=0009C6F8 |
| 290 | 00805FE6: cmpa.l #$c96f8, A0 D0=00100010, A0=0009C6FA |
| 291 | 00805FEC: bne 805fe2 D0=00100010, A0=0009C6FA |
| 292 | |
| 293 | 0080603A: move.l #$11ed7c, $100.w D0=61700080, A0=000C96F8, D1=00000000, A1=000040D8 |
| 294 | |
| 295 | 0012314C: move.l (A0)+, (A1)+ D0=61700080, A0=00124174, D1=00000000, A1=00F03FFC |
| 296 | 0012314E: cmpa.l #$f04000, A1 D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 297 | 00123154: blt 12314c D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 298 | 00123156: move.l #$0, $f035d0.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 299 | 00123160: move.l #$f03000, $f02110.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 300 | 0012316A: move.l #$1, $f02114.l D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 301 | 00123174: rts D0=61700080, A0=00124178, D1=00000000, A1=00F04000 |
| 302 | */ |
| 303 | /* static char buffer[2048]; |
| 304 | //if (m68kPC > 0x805F48) start = true; |
| 305 | //if (m68kPC > 0x806486) start = true; |
| 306 | //if (m68kPC == 0x805FEE) start = true; |
| 307 | //if (m68kPC == 0x80600C)// start = true; |
| 308 | if (m68kPC == 0x802058) start = true; |
| 309 | //{ |
| 310 | // GPUDumpRegisters(); |
| 311 | // GPUDumpDisassembly(); |
| 312 | // |
| 313 | // M68K_show_context(); |
| 314 | // log_done(); |
| 315 | // exit(0); |
| 316 | //} |
| 317 | if (start) |
| 318 | { |
| 319 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); |
| 320 | WriteLog("%08X: %s \t\tD0=%08X, A0=%08X, D1=%08X, A1=%08X\n", m68kPC, buffer, m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_A1)); |
| 321 | }//*/ |
| 322 | |
| 323 | /* if (m68kPC == 0x803F16) |
| 324 | { |
| 325 | WriteLog("M68K: Registers found at $803F16:\n"); |
| 326 | WriteLog("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); |
| 327 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) |
| 328 | WriteLog("\tD%i = %08X\n", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 329 | WriteLog("\n"); |
| 330 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) |
| 331 | WriteLog("\tA%i = %08X\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 332 | }*/ |
| 333 | //Looks like the DSP is supposed to return $12345678 when it finishes its validation routine... |
| 334 | // !!! Investigate !!! |
| 335 | /*extern bool doDSPDis; |
| 336 | static bool disgo = false; |
| 337 | if (m68kPC == 0x50222) |
| 338 | { |
| 339 | // CD BIOS hacking |
| 340 | // WriteLog("M68K: About to stuff $12345678 into $F1B000 (=%08X)...\n", DSPReadLong(0xF1B000, M68K)); |
| 341 | // DSPWriteLong(0xF1B000, 0x12345678, M68K); |
| 342 | // disgo = true; |
| 343 | } |
| 344 | if (m68kPC == 0x5000) |
| 345 | // doDSPDis = true; |
| 346 | disgo = true; |
| 347 | if (disgo) |
| 348 | { |
| 349 | static char buffer[2048]; |
| 350 | m68k_disassemble(buffer, m68kPC, M68K_CPU_TYPE_68000); |
| 351 | WriteLog("%08X: %s", m68kPC, buffer); |
| 352 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n", |
| 353 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), |
| 354 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); |
| 355 | }//*/ |
| 356 | /* if (m68kPC == 0x82E1A) |
| 357 | { |
| 358 | static char buffer[2048]; |
| 359 | m68k_disassemble(buffer, m68kPC, 0);//M68K_CPU_TYPE_68000); |
| 360 | WriteLog("--> [Routine start] %08X: %s", m68kPC, buffer); |
| 361 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X(cmd), D1=%08X(# bytes), D2=%08X\n", |
| 362 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), |
| 363 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); |
| 364 | }//*/ |
| 365 | /* if (m68kPC == 0x82E58) |
| 366 | WriteLog("--> [Routine end]\n"); |
| 367 | if (m68kPC == 0x80004) |
| 368 | { |
| 369 | WriteLog("--> [Calling BusWrite2] D2: %08X\n", m68k_get_reg(NULL, M68K_REG_D2)); |
| 370 | // m68k_set_reg(M68K_REG_D2, 0x12345678); |
| 371 | }//*/ |
| 372 | |
| 373 | #ifdef LOG_CD_BIOS_CALLS |
| 374 | /* |
| 375 | CD_init:: -> $3000 |
| 376 | BIOS_VER:: -> $3004 |
| 377 | CD_mode:: -> $3006 |
| 378 | CD_ack:: -> $300C |
| 379 | CD_jeri:: -> $3012 |
| 380 | CD_spin:: -> $3018 |
| 381 | CD_stop:: -> $301E |
| 382 | CD_mute:: -> $3024 |
| 383 | CD_umute:: -> $302A |
| 384 | CD_paus:: -> $3030 |
| 385 | CD_upaus:: -> $3036 |
| 386 | CD_read:: -> $303C |
| 387 | CD_uread:: -> $3042 |
| 388 | CD_setup:: -> $3048 |
| 389 | CD_ptr:: -> $304E |
| 390 | CD_osamp:: -> $3054 |
| 391 | CD_getoc:: -> $305A |
| 392 | CD_initm:: -> $3060 |
| 393 | CD_initf:: -> $3066 |
| 394 | CD_switch:: -> $306C |
| 395 | */ |
| 396 | if (m68kPC == 0x3000) |
| 397 | WriteLog("M68K: CD_init\n"); |
| 398 | else if (m68kPC == 0x3006 + (6 * 0)) |
| 399 | WriteLog("M68K: CD_mode\n"); |
| 400 | else if (m68kPC == 0x3006 + (6 * 1)) |
| 401 | WriteLog("M68K: CD_ack\n"); |
| 402 | else if (m68kPC == 0x3006 + (6 * 2)) |
| 403 | WriteLog("M68K: CD_jeri\n"); |
| 404 | else if (m68kPC == 0x3006 + (6 * 3)) |
| 405 | WriteLog("M68K: CD_spin\n"); |
| 406 | else if (m68kPC == 0x3006 + (6 * 4)) |
| 407 | WriteLog("M68K: CD_stop\n"); |
| 408 | else if (m68kPC == 0x3006 + (6 * 5)) |
| 409 | WriteLog("M68K: CD_mute\n"); |
| 410 | else if (m68kPC == 0x3006 + (6 * 6)) |
| 411 | WriteLog("M68K: CD_umute\n"); |
| 412 | else if (m68kPC == 0x3006 + (6 * 7)) |
| 413 | WriteLog("M68K: CD_paus\n"); |
| 414 | else if (m68kPC == 0x3006 + (6 * 8)) |
| 415 | WriteLog("M68K: CD_upaus\n"); |
| 416 | else if (m68kPC == 0x3006 + (6 * 9)) |
| 417 | WriteLog("M68K: CD_read\n"); |
| 418 | else if (m68kPC == 0x3006 + (6 * 10)) |
| 419 | WriteLog("M68K: CD_uread\n"); |
| 420 | else if (m68kPC == 0x3006 + (6 * 11)) |
| 421 | WriteLog("M68K: CD_setup\n"); |
| 422 | else if (m68kPC == 0x3006 + (6 * 12)) |
| 423 | WriteLog("M68K: CD_ptr\n"); |
| 424 | else if (m68kPC == 0x3006 + (6 * 13)) |
| 425 | WriteLog("M68K: CD_osamp\n"); |
| 426 | else if (m68kPC == 0x3006 + (6 * 14)) |
| 427 | WriteLog("M68K: CD_getoc\n"); |
| 428 | else if (m68kPC == 0x3006 + (6 * 15)) |
| 429 | WriteLog("M68K: CD_initm\n"); |
| 430 | else if (m68kPC == 0x3006 + (6 * 16)) |
| 431 | WriteLog("M68K: CD_initf\n"); |
| 432 | else if (m68kPC == 0x3006 + (6 * 17)) |
| 433 | WriteLog("M68K: CD_switch\n"); |
| 434 | |
| 435 | if (m68kPC >= 0x3000 && m68kPC <= 0x306C) |
| 436 | WriteLog("\t\tA0=%08X, A1=%08X, D0=%08X, D1=%08X, D2=%08X\n", |
| 437 | m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), |
| 438 | m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1), m68k_get_reg(NULL, M68K_REG_D2)); |
| 439 | #endif |
| 440 | |
| 441 | #ifdef ABORT_ON_ILLEGAL_INSTRUCTIONS |
| 442 | if (!m68k_is_valid_instruction(m68k_read_memory_16(m68kPC), 0))//M68K_CPU_TYPE_68000)) |
| 443 | { |
| 444 | #ifndef ABORT_ON_OFFICIAL_ILLEGAL_INSTRUCTION |
| 445 | if (m68k_read_memory_16(m68kPC) == 0x4AFC) |
| 446 | { |
| 447 | // This is a kludge to let homebrew programs work properly (i.e., let the other processors |
| 448 | // keep going even when the 68K dumped back to the debugger or what have you). |
| 449 | //dis no wok right! |
| 450 | // m68k_set_reg(M68K_REG_PC, m68kPC - 2); |
| 451 | // Try setting the vector to the illegal instruction... |
| 452 | //This doesn't work right either! Do something else! Quick! |
| 453 | // SET32(jaguar_mainRam, 0x10, m68kPC); |
| 454 | |
| 455 | return; |
| 456 | } |
| 457 | #endif |
| 458 | |
| 459 | WriteLog("\nM68K encountered an illegal instruction at %08X!!!\n\nAborting!\n", m68kPC); |
| 460 | uint32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); |
| 461 | WriteLog("M68K: Top of stack: %08X. Stack trace:\n", JaguarReadLong(topOfStack)); |
| 462 | uint32_t address = topOfStack - (4 * 4 * 3); |
| 463 | |
| 464 | for(int i=0; i<10; i++) |
| 465 | { |
| 466 | WriteLog("%06X:", address); |
| 467 | |
| 468 | for(int j=0; j<4; j++) |
| 469 | { |
| 470 | WriteLog(" %08X", JaguarReadLong(address)); |
| 471 | address += 4; |
| 472 | } |
| 473 | |
| 474 | WriteLog("\n"); |
| 475 | } |
| 476 | |
| 477 | WriteLog("Jaguar: VBL interrupt is %s\n", ((TOMIRQEnabled(IRQ_VIDEO)) && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled"); |
| 478 | M68K_show_context(); |
| 479 | |
| 480 | //temp |
| 481 | // WriteLog("\n\n68K disasm\n\n"); |
| 482 | // jaguar_dasm(0x802000, 0x50C); |
| 483 | // WriteLog("\n\n"); |
| 484 | //endoftemp |
| 485 | |
| 486 | LogDone(); |
| 487 | exit(0); |
| 488 | }//*/ |
| 489 | #endif |
| 490 | } |
| 491 | |
| 492 | #if 0 |
| 493 | Now here be dragons... |
| 494 | Here is how memory ranges are defined in the CoJag driver. |
| 495 | Note that we only have to be concerned with 3 entities read/writing anything: |
| 496 | The main CPU, the GPU, and the DSP. Everything else is unnecessary. So we can keep our main memory |
| 497 | checking in jaguar.cpp, gpu.cpp and dsp.cpp. There should be NO checking in TOM, JERRY, etc. other than |
| 498 | things that are entirely internal to those modules. This way we should be able to get a handle on all |
| 499 | this crap which is currently scattered over Hell's Half Acre(tm). |
| 500 | |
| 501 | Also: We need to distinguish whether or not we need .b, .w, and .dw versions of everything, or if there |
| 502 | is a good way to collapse that shit (look below for inspiration). Current method works, but is error prone. |
| 503 | |
| 504 | /************************************* |
| 505 | * |
| 506 | * Main CPU memory handlers |
| 507 | * |
| 508 | *************************************/ |
| 509 | |
| 510 | static ADDRESS_MAP_START( m68020_map, ADDRESS_SPACE_PROGRAM, 32 ) |
| 511 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_BASE(&jaguar_shared_ram) AM_SHARE(1) |
| 512 | AM_RANGE(0x800000, 0x9fffff) AM_ROM AM_REGION(REGION_USER1, 0) AM_BASE(&rom_base) |
| 513 | AM_RANGE(0xa00000, 0xa1ffff) AM_RAM |
| 514 | AM_RANGE(0xa20000, 0xa21fff) AM_READWRITE(eeprom_data_r, eeprom_data_w) AM_BASE(&generic_nvram32) AM_SIZE(&generic_nvram_size) |
| 515 | AM_RANGE(0xa30000, 0xa30003) AM_WRITE(watchdog_reset32_w) |
| 516 | AM_RANGE(0xa40000, 0xa40003) AM_WRITE(eeprom_enable_w) |
| 517 | AM_RANGE(0xb70000, 0xb70003) AM_READWRITE(misc_control_r, misc_control_w) |
| 518 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(2) |
| 519 | AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) |
| 520 | AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) |
| 521 | AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_BASE(&jaguar_gpu_clut) AM_SHARE(2) |
| 522 | AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) |
| 523 | AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) |
| 524 | AM_RANGE(0xf03000, 0xf03fff) AM_MIRROR(0x008000) AM_RAM AM_BASE(&jaguar_gpu_ram) AM_SHARE(3) |
| 525 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) |
| 526 | AM_RANGE(0xf16000, 0xf1600b) AM_READ(cojag_gun_input_r) // GPI02 |
| 527 | AM_RANGE(0xf17000, 0xf17003) AM_READ(status_r) // GPI03 |
| 528 | // AM_RANGE(0xf17800, 0xf17803) AM_WRITE(latch_w) // GPI04 |
| 529 | AM_RANGE(0xf17c00, 0xf17c03) AM_READ(jamma_r) // GPI05 |
| 530 | AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) |
| 531 | AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) |
| 532 | AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_BASE(&jaguar_dsp_ram) AM_SHARE(4) |
| 533 | ADDRESS_MAP_END |
| 534 | |
| 535 | /************************************* |
| 536 | * |
| 537 | * GPU memory handlers |
| 538 | * |
| 539 | *************************************/ |
| 540 | |
| 541 | static ADDRESS_MAP_START( gpu_map, ADDRESS_SPACE_PROGRAM, 32 ) |
| 542 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) |
| 543 | AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) |
| 544 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) |
| 545 | AM_RANGE(0xe00000, 0xe003ff) AM_DEVREADWRITE(IDE_CONTROLLER, "ide", ide_controller32_r, ide_controller32_w) |
| 546 | AM_RANGE(0xf00000, 0xf003ff) AM_READWRITE(jaguar_tom_regs32_r, jaguar_tom_regs32_w) |
| 547 | AM_RANGE(0xf00400, 0xf007ff) AM_RAM AM_SHARE(2) |
| 548 | AM_RANGE(0xf02100, 0xf021ff) AM_READWRITE(gpuctrl_r, gpuctrl_w) |
| 549 | AM_RANGE(0xf02200, 0xf022ff) AM_READWRITE(jaguar_blitter_r, jaguar_blitter_w) |
| 550 | AM_RANGE(0xf03000, 0xf03fff) AM_RAM AM_SHARE(3) |
| 551 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) |
| 552 | ADDRESS_MAP_END |
| 553 | |
| 554 | /************************************* |
| 555 | * |
| 556 | * DSP memory handlers |
| 557 | * |
| 558 | *************************************/ |
| 559 | |
| 560 | static ADDRESS_MAP_START( dsp_map, ADDRESS_SPACE_PROGRAM, 32 ) |
| 561 | AM_RANGE(0x000000, 0x7fffff) AM_RAM AM_SHARE(1) |
| 562 | AM_RANGE(0x800000, 0xbfffff) AM_ROMBANK(8) |
| 563 | AM_RANGE(0xc00000, 0xdfffff) AM_ROMBANK(9) |
| 564 | AM_RANGE(0xf10000, 0xf103ff) AM_READWRITE(jaguar_jerry_regs32_r, jaguar_jerry_regs32_w) |
| 565 | AM_RANGE(0xf1a100, 0xf1a13f) AM_READWRITE(dspctrl_r, dspctrl_w) |
| 566 | AM_RANGE(0xf1a140, 0xf1a17f) AM_READWRITE(jaguar_serial_r, jaguar_serial_w) |
| 567 | AM_RANGE(0xf1b000, 0xf1cfff) AM_RAM AM_SHARE(4) |
| 568 | AM_RANGE(0xf1d000, 0xf1dfff) AM_READ(jaguar_wave_rom_r) AM_BASE(&jaguar_wave_rom) |
| 569 | ADDRESS_MAP_END |
| 570 | */ |
| 571 | #endif |
| 572 | |
| 573 | //#define EXPERIMENTAL_MEMORY_HANDLING |
| 574 | // Experimental memory mappage... |
| 575 | // Dunno if this is a good approach or not, but it seems to make better |
| 576 | // sense to have all this crap in one spot intstead of scattered all over |
| 577 | // the place the way it is now. |
| 578 | #ifdef EXPERIMENTAL_MEMORY_HANDLING |
| 579 | // Needed defines... |
| 580 | #define NEW_TIMER_SYSTEM |
| 581 | |
| 582 | /* |
| 583 | uint8_t jaguarMainRAM[0x400000]; // 68K CPU RAM |
| 584 | uint8_t jaguarMainROM[0x600000]; // 68K CPU ROM |
| 585 | uint8_t jaguarBootROM[0x040000]; // 68K CPU BIOS ROM--uses only half of this! |
| 586 | uint8_t jaguarCDBootROM[0x040000]; // 68K CPU CD BIOS ROM |
| 587 | bool BIOSLoaded = false; |
| 588 | bool CDBIOSLoaded = false; |
| 589 | |
| 590 | uint8_t cdRAM[0x100]; |
| 591 | uint8_t tomRAM[0x4000]; |
| 592 | uint8_t jerryRAM[0x10000]; |
| 593 | static uint16_t eeprom_ram[64]; |
| 594 | |
| 595 | // NOTE: CD BIOS ROM is read from cartridge space @ $802000 (it's a cartridge, after all) |
| 596 | */ |
| 597 | |
| 598 | enum MemType { MM_NOP = 0, MM_RAM, MM_ROM, MM_IO }; |
| 599 | |
| 600 | // M68K Memory map/handlers |
| 601 | uint32_t { |
| 602 | { 0x000000, 0x3FFFFF, MM_RAM, jaguarMainRAM }, |
| 603 | { 0x800000, 0xDFFEFF, MM_ROM, jaguarMainROM }, |
| 604 | // Note that this is really memory mapped I/O region... |
| 605 | // { 0xDFFF00, 0xDFFFFF, MM_RAM, cdRAM }, |
| 606 | { 0xDFFF00, 0xDFFF03, MM_IO, cdBUTCH }, // base of Butch == interrupt control register, R/W |
| 607 | { 0xDFFF04, 0xDFFF07, MM_IO, cdDSCNTRL }, // DSA control register, R/W |
| 608 | { 0xDFFF0A, 0xDFFF0B, MM_IO, cdDS_DATA }, // DSA TX/RX data, R/W |
| 609 | { 0xDFFF10, 0xDFFF13, MM_IO, cdI2CNTRL }, // i2s bus control register, R/W |
| 610 | { 0xDFFF14, 0xDFFF17, MM_IO, cdSBCNTRL }, // CD subcode control register, R/W |
| 611 | { 0xDFFF18, 0xDFFF1B, MM_IO, cdSUBDATA }, // Subcode data register A |
| 612 | { 0xDFFF1C, 0xDFFF1F, MM_IO, cdSUBDATB }, // Subcode data register B |
| 613 | { 0xDFFF20, 0xDFFF23, MM_IO, cdSB_TIME }, // Subcode time and compare enable (D24) |
| 614 | { 0xDFFF24, 0xDFFF27, MM_IO, cdFIFO_DATA }, // i2s FIFO data |
| 615 | { 0xDFFF28, 0xDFFF2B, MM_IO, cdI2SDAT2 }, // i2s FIFO data (old) |
| 616 | { 0xDFFF2C, 0xDFFF2F, MM_IO, cdUNKNOWN }, // Seems to be some sort of I2S interface |
| 617 | |
| 618 | { 0xE00000, 0xE3FFFF, MM_ROM, jaguarBootROM }, |
| 619 | |
| 620 | // { 0xF00000, 0xF0FFFF, MM_IO, TOM_REGS_RW }, |
| 621 | { 0xF00050, 0xF00051, MM_IO, tomTimerPrescaler }, |
| 622 | { 0xF00052, 0xF00053, MM_IO, tomTimerDivider }, |
| 623 | { 0xF00400, 0xF005FF, MM_RAM, tomRAM }, // CLUT A&B: How to link these? Write to one writes to the other... |
| 624 | { 0xF00600, 0xF007FF, MM_RAM, tomRAM }, // Actually, this is a good approach--just make the reads the same as well |
| 625 | //What about LBUF writes??? |
| 626 | { 0xF02100, 0xF0211F, MM_IO, GPUWriteByte }, // GPU CONTROL |
| 627 | { 0xF02200, 0xF0229F, MM_IO, BlitterWriteByte }, // BLITTER |
| 628 | { 0xF03000, 0xF03FFF, MM_RAM, GPUWriteByte }, // GPU RAM |
| 629 | |
| 630 | { 0xF10000, 0xF1FFFF, MM_IO, JERRY_REGS_RW }, |
| 631 | |
| 632 | /* |
| 633 | EEPROM: |
| 634 | { 0xF14001, 0xF14001, MM_IO_RO, eepromFOO } |
| 635 | { 0xF14801, 0xF14801, MM_IO_WO, eepromBAR } |
| 636 | { 0xF15001, 0xF15001, MM_IO_RW, eepromBAZ } |
| 637 | |
| 638 | JOYSTICK: |
| 639 | { 0xF14000, 0xF14003, MM_IO, joystickFoo } |
| 640 | 0 = pad0/1 button values (4 bits each), RO(?) |
| 641 | 1 = pad0/1 index value (4 bits each), WO |
| 642 | 2 = unused, RO |
| 643 | 3 = NTSC/PAL, certain button states, RO |
| 644 | |
| 645 | JOYSTICK $F14000 Read/Write |
| 646 | 15.....8 7......0 |
| 647 | Read fedcba98 7654321q f-1 Signals J15 to J1 |
| 648 | q Cartridge EEPROM output data |
| 649 | Write exxxxxxm 76543210 e 1 = enable J7-J0 outputs |
| 650 | 0 = disable J7-J0 outputs |
| 651 | x don't care |
| 652 | m Audio mute |
| 653 | 0 = Audio muted (reset state) |
| 654 | 1 = Audio enabled |
| 655 | 7-4 J7-J4 outputs (port 2) |
| 656 | 3-0 J3-J0 outputs (port 1) |
| 657 | JOYBUTS $F14002 Read Only |
| 658 | 15.....8 7......0 |
| 659 | Read xxxxxxxx rrdv3210 x don't care |
| 660 | r Reserved |
| 661 | d Reserved |
| 662 | v 1 = NTSC Video hardware |
| 663 | 0 = PAL Video hardware |
| 664 | 3-2 Button inputs B3 & B2 (port 2) |
| 665 | 1-0 Button inputs B1 & B0 (port 1) |
| 666 | |
| 667 | J4 J5 J6 J7 Port 2 B2 B3 J12 J13 J14 J15 |
| 668 | J3 J2 J1 J0 Port 1 B0 B1 J8 J9 J10 J11 |
| 669 | 0 0 0 0 |
| 670 | 0 0 0 1 |
| 671 | 0 0 1 0 |
| 672 | 0 0 1 1 |
| 673 | 0 1 0 0 |
| 674 | 0 1 0 1 |
| 675 | 0 1 1 0 |
| 676 | 0 1 1 1 Row 3 C3 Option # 9 6 3 |
| 677 | 1 0 0 0 |
| 678 | 1 0 0 1 |
| 679 | 1 0 1 0 |
| 680 | 1 0 1 1 Row 2 C2 C 0 8 5 2 |
| 681 | 1 1 0 0 |
| 682 | 1 1 0 1 Row 1 C1 B * 7 4 1 |
| 683 | 1 1 1 0 Row 0 Pause A Up Down Left Right |
| 684 | 1 1 1 1 |
| 685 | |
| 686 | 0 bit read in any position means that button is pressed. |
| 687 | C3 = C2 = 1 means std. Jag. cntrlr. or nothing attached. |
| 688 | */ |
| 689 | }; |
| 690 | |
| 691 | void WriteByte(uint32_t address, uint8_t byte, uint32_t who/*=UNKNOWN*/) |
| 692 | { |
| 693 | // Not sure, but I think the system only has 24 address bits... |
| 694 | address &= 0x00FFFFFF; |
| 695 | |
| 696 | // RAM ($000000 - $3FFFFF) 4M |
| 697 | if (address <= 0x3FFFFF) |
| 698 | jaguarMainRAM[address] = byte; |
| 699 | // hole ($400000 - $7FFFFF) 4M |
| 700 | else if (address <= 0x7FFFFF) |
| 701 | ; // Do nothing |
| 702 | // GAME ROM ($800000 - $DFFEFF) 6M - 256 bytes |
| 703 | else if (address <= 0xDFFEFF) |
| 704 | ; // Do nothing |
| 705 | // CDROM ($DFFF00 - $DFFFFF) 256 bytes |
| 706 | else if (address <= 0xDFFFFF) |
| 707 | { |
| 708 | cdRAM[address & 0xFF] = byte; |
| 709 | #ifdef CDROM_LOG |
| 710 | if ((address & 0xFF) < 12 * 4) |
| 711 | WriteLog("[%s] ", BReg[(address & 0xFF) / 4]); |
| 712 | WriteLog("CDROM: %s writing byte $%02X at $%08X [68K PC=$%08X]\n", whoName[who], data, offset, m68k_get_reg(NULL, M68K_REG_PC)); |
| 713 | #endif |
| 714 | } |
| 715 | // BIOS ROM ($E00000 - $E3FFFF) 256K |
| 716 | else if (address <= 0xE3FFFF) |
| 717 | ; // Do nothing |
| 718 | // hole ($E40000 - $EFFFFF) 768K |
| 719 | else if (address <= 0xEFFFFF) |
| 720 | ; // Do nothing |
| 721 | // TOM ($F00000 - $F0FFFF) 64K |
| 722 | else if (address <= 0xF0FFFF) |
| 723 | // ; // Do nothing |
| 724 | { |
| 725 | if (address == 0xF00050) |
| 726 | { |
| 727 | tomTimerPrescaler = (tomTimerPrescaler & 0x00FF) | ((uint16_t)byte << 8); |
| 728 | TOMResetPIT(); |
| 729 | return; |
| 730 | } |
| 731 | else if (address == 0xF00051) |
| 732 | { |
| 733 | tomTimerPrescaler = (tomTimerPrescaler & 0xFF00) | byte; |
| 734 | TOMResetPIT(); |
| 735 | return; |
| 736 | } |
| 737 | else if (address == 0xF00052) |
| 738 | { |
| 739 | tomTimerDivider = (tomTimerDivider & 0x00FF) | ((uint16_t)byte << 8); |
| 740 | TOMResetPIT(); |
| 741 | return; |
| 742 | } |
| 743 | else if (address == 0xF00053) |
| 744 | { |
| 745 | tomTimerDivider = (tomTimerDivider & 0xFF00) | byte; |
| 746 | TOMResetPIT(); |
| 747 | return; |
| 748 | } |
| 749 | else if (address >= 0xF00400 && address <= 0xF007FF) // CLUT (A & B) |
| 750 | { |
| 751 | // Writing to one CLUT writes to the other |
| 752 | address &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF) |
| 753 | tomRAM[address] = tomRAM[address + 0x200] = byte; |
| 754 | return; |
| 755 | } |
| 756 | //What about LBUF writes??? |
| 757 | else if ((address >= 0xF02100) && (address <= 0xF0211F)) // GPU CONTROL |
| 758 | { |
| 759 | GPUWriteByte(address, byte, who); |
| 760 | return; |
| 761 | } |
| 762 | else if ((address >= 0xF02200) && (address <= 0xF0229F)) // BLITTER |
| 763 | { |
| 764 | BlitterWriteByte(address, byte, who); |
| 765 | return; |
| 766 | } |
| 767 | else if ((address >= 0xF03000) && (address <= 0xF03FFF)) // GPU RAM |
| 768 | { |
| 769 | GPUWriteByte(address, byte, who); |
| 770 | return; |
| 771 | } |
| 772 | |
| 773 | tomRAM[address & 0x3FFF] = byte; |
| 774 | } |
| 775 | // JERRY ($F10000 - $F1FFFF) 64K |
| 776 | else if (address <= 0xF1FFFF) |
| 777 | // ; // Do nothing |
| 778 | { |
| 779 | #ifdef JERRY_DEBUG |
| 780 | WriteLog("jerry: writing byte %.2x at 0x%.6x\n", byte, address); |
| 781 | #endif |
| 782 | if ((address >= DSP_CONTROL_RAM_BASE) && (address < DSP_CONTROL_RAM_BASE+0x20)) |
| 783 | { |
| 784 | DSPWriteByte(address, byte, who); |
| 785 | return; |
| 786 | } |
| 787 | else if ((address >= DSP_WORK_RAM_BASE) && (address < DSP_WORK_RAM_BASE+0x2000)) |
| 788 | { |
| 789 | DSPWriteByte(address, byte, who); |
| 790 | return; |
| 791 | } |
| 792 | // SCLK ($F1A150--8 bits wide) |
| 793 | //NOTE: This should be taken care of in DAC... |
| 794 | else if ((address >= 0xF1A152) && (address <= 0xF1A153)) |
| 795 | { |
| 796 | // WriteLog("JERRY: Writing %02X to SCLK...\n", data); |
| 797 | if ((address & 0x03) == 2) |
| 798 | JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0x00FF) | ((uint32_t)byte << 8); |
| 799 | else |
| 800 | JERRYI2SInterruptDivide = (JERRYI2SInterruptDivide & 0xFF00) | (uint32_t)byte; |
| 801 | |
| 802 | JERRYI2SInterruptTimer = -1; |
| 803 | #ifndef NEW_TIMER_SYSTEM |
| 804 | jerry_i2s_exec(0); |
| 805 | #else |
| 806 | RemoveCallback(JERRYI2SCallback); |
| 807 | JERRYI2SCallback(); |
| 808 | #endif |
| 809 | // return; |
| 810 | } |
| 811 | // LTXD/RTXD/SCLK/SMODE $F1A148/4C/50/54 (really 16-bit registers...) |
| 812 | else if (address >= 0xF1A148 && address <= 0xF1A157) |
| 813 | { |
| 814 | DACWriteByte(address, byte, who); |
| 815 | return; |
| 816 | } |
| 817 | else if (address >= 0xF10000 && address <= 0xF10007) |
| 818 | { |
| 819 | #ifndef NEW_TIMER_SYSTEM |
| 820 | switch (address & 0x07) |
| 821 | { |
| 822 | case 0: |
| 823 | JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0x00FF) | (byte << 8); |
| 824 | JERRYResetPIT1(); |
| 825 | break; |
| 826 | case 1: |
| 827 | JERRYPIT1Prescaler = (JERRYPIT1Prescaler & 0xFF00) | byte; |
| 828 | JERRYResetPIT1(); |
| 829 | break; |
| 830 | case 2: |
| 831 | JERRYPIT1Divider = (JERRYPIT1Divider & 0x00FF) | (byte << 8); |
| 832 | JERRYResetPIT1(); |
| 833 | break; |
| 834 | case 3: |
| 835 | JERRYPIT1Divider = (JERRYPIT1Divider & 0xFF00) | byte; |
| 836 | JERRYResetPIT1(); |
| 837 | break; |
| 838 | case 4: |
| 839 | JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0x00FF) | (byte << 8); |
| 840 | JERRYResetPIT2(); |
| 841 | break; |
| 842 | case 5: |
| 843 | JERRYPIT2Prescaler = (JERRYPIT2Prescaler & 0xFF00) | byte; |
| 844 | JERRYResetPIT2(); |
| 845 | break; |
| 846 | case 6: |
| 847 | JERRYPIT2Divider = (JERRYPIT2Divider & 0x00FF) | (byte << 8); |
| 848 | JERRYResetPIT2(); |
| 849 | break; |
| 850 | case 7: |
| 851 | JERRYPIT2Divider = (JERRYPIT2Divider & 0xFF00) | byte; |
| 852 | JERRYResetPIT2(); |
| 853 | } |
| 854 | #else |
| 855 | WriteLog("JERRY: Unhandled timer write (BYTE) at %08X...\n", address); |
| 856 | #endif |
| 857 | return; |
| 858 | } |
| 859 | /* else if ((offset >= 0xF10010) && (offset <= 0xF10015)) |
| 860 | { |
| 861 | clock_byte_write(offset, byte); |
| 862 | return; |
| 863 | }//*/ |
| 864 | // JERRY -> 68K interrupt enables/latches (need to be handled!) |
| 865 | else if (address >= 0xF10020 && address <= 0xF10023) |
| 866 | { |
| 867 | WriteLog("JERRY: (68K int en/lat - Unhandled!) Tried to write $%02X to $%08X!\n", byte, address); |
| 868 | } |
| 869 | /* else if ((offset >= 0xF17C00) && (offset <= 0xF17C01)) |
| 870 | { |
| 871 | anajoy_byte_write(offset, byte); |
| 872 | return; |
| 873 | }*/ |
| 874 | else if ((address >= 0xF14000) && (address <= 0xF14003)) |
| 875 | { |
| 876 | JoystickWriteByte(address, byte); |
| 877 | EepromWriteByte(address, byte); |
| 878 | return; |
| 879 | } |
| 880 | else if ((address >= 0xF14004) && (address <= 0xF1A0FF)) |
| 881 | { |
| 882 | EepromWriteByte(address, byte); |
| 883 | return; |
| 884 | } |
| 885 | //Need to protect write attempts to Wavetable ROM (F1D000-FFF) |
| 886 | else if (address >= 0xF1D000 && address <= 0xF1DFFF) |
| 887 | return; |
| 888 | |
| 889 | jerryRAM[address & 0xFFFF] = byte; |
| 890 | } |
| 891 | // hole ($F20000 - $FFFFFF) 1M - 128K |
| 892 | else |
| 893 | ; // Do nothing |
| 894 | } |
| 895 | |
| 896 | |
| 897 | void WriteWord(uint32_t adddress, uint16_t word) |
| 898 | { |
| 899 | } |
| 900 | |
| 901 | |
| 902 | void WriteDWord(uint32_t adddress, uint32_t dword) |
| 903 | { |
| 904 | } |
| 905 | |
| 906 | |
| 907 | uint8_t ReadByte(uint32_t adddress) |
| 908 | { |
| 909 | } |
| 910 | |
| 911 | |
| 912 | uint16_t ReadWord(uint32_t adddress) |
| 913 | { |
| 914 | } |
| 915 | |
| 916 | |
| 917 | uint32_t ReadDWord(uint32_t adddress) |
| 918 | { |
| 919 | } |
| 920 | #endif |
| 921 | |
| 922 | |
| 923 | void ShowM68KContext(void) |
| 924 | { |
| 925 | printf("\t68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); |
| 926 | |
| 927 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) |
| 928 | { |
| 929 | printf("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 930 | |
| 931 | if (i == M68K_REG_D3 || i == M68K_REG_D7) |
| 932 | printf("\n"); |
| 933 | } |
| 934 | |
| 935 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) |
| 936 | { |
| 937 | printf("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 938 | |
| 939 | if (i == M68K_REG_A3 || i == M68K_REG_A7) |
| 940 | printf("\n"); |
| 941 | } |
| 942 | |
| 943 | uint32_t currpc = m68k_get_reg(NULL, M68K_REG_PC); |
| 944 | uint32_t disPC = currpc - 30; |
| 945 | char buffer[128]; |
| 946 | |
| 947 | do |
| 948 | { |
| 949 | uint32_t oldpc = disPC; |
| 950 | disPC += m68k_disassemble(buffer, disPC, 0, 1); |
| 951 | printf("%s%08X: %s\n", (oldpc == currpc ? ">" : " "), oldpc, buffer); |
| 952 | } |
| 953 | while (disPC < (currpc + 10)); |
| 954 | } |
| 955 | |
| 956 | |
| 957 | // |
| 958 | // Custom UAE 68000 read/write/IRQ functions |
| 959 | // |
| 960 | |
| 961 | #if 0 |
| 962 | IRQs: |
| 963 | =-=-= |
| 964 | |
| 965 | IPL Name Vector Control |
| 966 | ---------+---------------+---------------+--------------- |
| 967 | 2 VBLANK IRQ $100 INT1 bit #0 |
| 968 | 2 GPU IRQ $100 INT1 bit #1 |
| 969 | 2 HBLANK IRQ $100 INT1 bit #2 |
| 970 | 2 Timer IRQ $100 INT1 bit #3 |
| 971 | |
| 972 | Note: Both timer interrupts (JPIT && PIT) are on the same INT1 bit. |
| 973 | and are therefore indistinguishable. |
| 974 | |
| 975 | A typical way to install a LEVEL2 handler for the 68000 would be |
| 976 | something like this, you gotta supply "last_line" and "handler". |
| 977 | Note that the interrupt is auto vectored thru $100 (not $68) |
| 978 | |
| 979 | |
| 980 | V_AUTO = $100 |
| 981 | VI = $F004E |
| 982 | INT1 = $F00E0 |
| 983 | INT2 = $F00E2 |
| 984 | |
| 985 | IRQS_HANDLED=$909 ;; VBLANK and TIMER |
| 986 | |
| 987 | move.w #$2700,sr ;; no IRQs please |
| 988 | move.l #handler,V_AUTO ;; install our routine |
| 989 | |
| 990 | move.w #last_line,VI ;; scanline where IRQ should occur |
| 991 | ;; should be 'odd' BTW |
| 992 | move.w #IRQS_HANDLE&$FF,INT1 ;; enable VBLANK + TIMER |
| 993 | move.w #$2100,sr ;; enable IRQs on the 68K |
| 994 | ... |
| 995 | |
| 996 | handler: |
| 997 | move.w d0,-(a7) |
| 998 | move.w INT1,d0 |
| 999 | btst.b #0,d0 |
| 1000 | bne.b .no_blank |
| 1001 | |
| 1002 | ... |
| 1003 | |
| 1004 | .no_blank: |
| 1005 | btst.b #3,d0 |
| 1006 | beq.b .no_timer |
| 1007 | |
| 1008 | ... |
| 1009 | |
| 1010 | .no_timer: |
| 1011 | move.w #IRQS_HANDLED,INT1 ; clear latch, keep IRQ alive |
| 1012 | move.w #0,INT2 ; let GPU run again |
| 1013 | move.w (a7)+,d0 |
| 1014 | rte |
| 1015 | |
| 1016 | As you can see, if you have multiple INT1 interrupts coming in, |
| 1017 | you need to check the lower byte of INT1, to see which interrupt |
| 1018 | happened. |
| 1019 | #endif |
| 1020 | int irq_ack_handler(int level) |
| 1021 | { |
| 1022 | #ifdef CPU_DEBUG_TRACING |
| 1023 | if (startM68KTracing) |
| 1024 | { |
| 1025 | WriteLog("irq_ack_handler: M68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); |
| 1026 | } |
| 1027 | #endif |
| 1028 | |
| 1029 | // Tracing the IPL lines on the Jaguar schematic yields the following: |
| 1030 | // IPL1 is connected to INTL on TOM (OUT to 68K) |
| 1031 | // IPL0-2 are also tied to Vcc via 4.7K resistors! |
| 1032 | // (DINT on TOM goes into DINT on JERRY (IN Tom from Jerry)) |
| 1033 | // There doesn't seem to be any other path to IPL0 or 2 on the schematic, |
| 1034 | // which means that *all* IRQs to the 68K are routed thru TOM at level 2. |
| 1035 | // Which means they're all maskable. |
| 1036 | |
| 1037 | // The GPU/DSP/etc are probably *not* issuing an NMI, but it seems to work |
| 1038 | // OK... |
| 1039 | // They aren't, and this causes problems with a, err, specific ROM. :-D |
| 1040 | |
| 1041 | if (level == 2) |
| 1042 | { |
| 1043 | m68k_set_irq(0); // Clear the IRQ (NOTE: Without this, the BIOS fails)... |
| 1044 | return 64; // Set user interrupt #0 |
| 1045 | } |
| 1046 | |
| 1047 | return M68K_INT_ACK_AUTOVECTOR; |
| 1048 | } |
| 1049 | |
| 1050 | |
| 1051 | #if 0 |
| 1052 | void M68K_Debughalt(void) |
| 1053 | { |
| 1054 | M68KDebugHalt(); |
| 1055 | } |
| 1056 | #endif |
| 1057 | |
| 1058 | |
| 1059 | // M68000 breakpoints initialisations |
| 1060 | void m68k_brk_init(void) |
| 1061 | { |
| 1062 | brkNbr = 0; |
| 1063 | brkInfo = NULL; |
| 1064 | } |
| 1065 | |
| 1066 | |
| 1067 | // Reset the M68000 breakpoints structures |
| 1068 | void m68k_brk_reset(void) |
| 1069 | { |
| 1070 | // Reset the breakpoints |
| 1071 | free(brkInfo); |
| 1072 | brkInfo = NULL; |
| 1073 | brkNbr = 0; |
| 1074 | } |
| 1075 | |
| 1076 | |
| 1077 | // Delete a M68000 breakpoint (starting from 1) |
| 1078 | void m68k_brk_del(unsigned int NumBrk) |
| 1079 | { |
| 1080 | // Remove the breakpoint |
| 1081 | memset((void *)(brkInfo + (NumBrk - 1)), 0, sizeof(S_BrkInfo)); |
| 1082 | } |
| 1083 | |
| 1084 | |
| 1085 | // Add a M68000 breakpoint |
| 1086 | // return true if breakpoint has been added, and false if breakpoint already exists |
| 1087 | unsigned int m68k_brk_add(void *PtrInfo) |
| 1088 | { |
| 1089 | S_BrkInfo *Ptr = NULL; |
| 1090 | |
| 1091 | // Check if breakpoint already exists |
| 1092 | for (size_t i = 0; i < brkNbr; i++) |
| 1093 | { |
| 1094 | if (brkInfo[i].Used) |
| 1095 | { |
| 1096 | if (brkInfo[i].Adr == ((S_BrkInfo *)PtrInfo)->Adr) |
| 1097 | { |
| 1098 | return false; |
| 1099 | } |
| 1100 | } |
| 1101 | } |
| 1102 | |
| 1103 | // Look for an available breakpoint |
| 1104 | for (size_t i = 0; i < brkNbr, Ptr; i++) |
| 1105 | { |
| 1106 | if (!brkInfo[i].Used) |
| 1107 | { |
| 1108 | Ptr = &brkInfo[i]; |
| 1109 | } |
| 1110 | } |
| 1111 | |
| 1112 | // Add a breakpoint |
| 1113 | if (!Ptr) |
| 1114 | { |
| 1115 | brkInfo = (S_BrkInfo *)realloc(brkInfo, (++brkNbr * sizeof(S_BrkInfo))); |
| 1116 | Ptr = &brkInfo[brkNbr - 1]; |
| 1117 | } |
| 1118 | |
| 1119 | // Transfert the breakpoint information and init the activities |
| 1120 | memcpy((void *)Ptr, PtrInfo, sizeof(S_BrkInfo)); |
| 1121 | Ptr->HitCounts = 0; |
| 1122 | return (Ptr->Active = Ptr->Used = true); |
| 1123 | } |
| 1124 | |
| 1125 | |
| 1126 | // Check if breakpoint has been reached |
| 1127 | unsigned int m68k_brk_check(unsigned int adr) |
| 1128 | { |
| 1129 | // Check if BPM has been reached |
| 1130 | if ((adr == bpmAddress1) && bpmActive) |
| 1131 | { |
| 1132 | bpmHitCounts++; |
| 1133 | return true; |
| 1134 | } |
| 1135 | else |
| 1136 | { |
| 1137 | // Check user breakpoints |
| 1138 | for (size_t i = 0; i < brkNbr; i++) |
| 1139 | { |
| 1140 | if (brkInfo[i].Used && brkInfo[i].Active) |
| 1141 | { |
| 1142 | if (brkInfo[i].Adr == adr) |
| 1143 | { |
| 1144 | brkInfo[i].HitCounts++; |
| 1145 | return true; |
| 1146 | } |
| 1147 | } |
| 1148 | } |
| 1149 | } |
| 1150 | |
| 1151 | // No breakpoint found |
| 1152 | return false; |
| 1153 | } |
| 1154 | |
| 1155 | |
| 1156 | // Disable the M68000 breakpoints |
| 1157 | void m68k_brk_disable(void) |
| 1158 | { |
| 1159 | // reset active for the breakpoints |
| 1160 | for (size_t i = 0; i < brkNbr; i++) |
| 1161 | { |
| 1162 | brkInfo[i].Active = 0; |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | |
| 1167 | // Reset the M68000 breakpoints |
| 1168 | void m68k_brk_hitcounts_reset(void) |
| 1169 | { |
| 1170 | // reset hit counts for the breakpoints |
| 1171 | for (size_t i = 0; i < brkNbr; i++) |
| 1172 | { |
| 1173 | brkInfo[i].HitCounts = 0; |
| 1174 | } |
| 1175 | } |
| 1176 | |
| 1177 | |
| 1178 | // Close the M68000 breakpoints structures |
| 1179 | void m68k_brk_close(void) |
| 1180 | { |
| 1181 | free(brkInfo); |
| 1182 | } |
| 1183 | |
| 1184 | |
| 1185 | // Read 1 byte from address |
| 1186 | // Check if address reaches a breakpoint |
| 1187 | unsigned int m68k_read_memory_8(unsigned int address) |
| 1188 | { |
| 1189 | #ifdef ALPINE_FUNCTIONS |
| 1190 | // Check if breakpoint on memory is active, and deal with it |
| 1191 | if (!startM68KTracing && m68k_brk_check(address)) |
| 1192 | { |
| 1193 | M68KDebugHalt(); |
| 1194 | } |
| 1195 | #endif |
| 1196 | |
| 1197 | // Musashi does this automagically for you, UAE core does not :-P |
| 1198 | address &= 0x00FFFFFF; |
| 1199 | #ifdef CPU_DEBUG_MEMORY |
| 1200 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1201 | if ((address >= 0x000000) && (address <= 0x1FFFFF)) |
| 1202 | { |
| 1203 | if (startMemLog) |
| 1204 | readMem[address] = 1; |
| 1205 | } |
| 1206 | #endif |
| 1207 | //WriteLog("[RM8] Addr: %08X\n", address); |
| 1208 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. |
| 1209 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 |
| 1210 | || address == 0x1AF05E) |
| 1211 | WriteLog("[RM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, jaguar_mainRam[address]);//*/ |
| 1212 | #ifndef USE_NEW_MMU |
| 1213 | unsigned int retVal = 0; |
| 1214 | |
| 1215 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1216 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 1))) |
| 1217 | { |
| 1218 | retVal = jaguarMainRAM[address]; |
| 1219 | } |
| 1220 | // else if ((address >= 0x800000) && (address <= 0xDFFFFF)) |
| 1221 | else |
| 1222 | { |
| 1223 | if ((address >= 0x800000) && (address <= 0xDFFEFF)) |
| 1224 | { |
| 1225 | retVal = jaguarMainROM[address - 0x800000]; |
| 1226 | } |
| 1227 | else |
| 1228 | { |
| 1229 | if ((address >= 0xE00000) && (address <= 0xE3FFFF)) |
| 1230 | { |
| 1231 | // retVal = jaguarBootROM[address - 0xE00000]; |
| 1232 | // retVal = jaguarDevBootROM1[address - 0xE00000]; |
| 1233 | retVal = jagMemSpace[address]; |
| 1234 | } |
| 1235 | else |
| 1236 | { |
| 1237 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) |
| 1238 | { |
| 1239 | retVal = CDROMReadByte(address); |
| 1240 | } |
| 1241 | else |
| 1242 | { |
| 1243 | if ((address >= 0xF00000) && (address <= 0xF0FFFF)) |
| 1244 | { |
| 1245 | retVal = TOMReadByte(address, M68K); |
| 1246 | } |
| 1247 | else |
| 1248 | { |
| 1249 | if ((address >= 0xF10000) && (address <= 0xF1FFFF)) |
| 1250 | { |
| 1251 | retVal = JERRYReadByte(address, M68K); |
| 1252 | } |
| 1253 | else |
| 1254 | { |
| 1255 | retVal = jaguar_unknown_readbyte(address, M68K); |
| 1256 | } |
| 1257 | } |
| 1258 | } |
| 1259 | } |
| 1260 | } |
| 1261 | } |
| 1262 | |
| 1263 | //if (address >= 0x2800 && address <= 0x281F) |
| 1264 | // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1265 | //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) |
| 1266 | // WriteLog("M68K: Read byte $%02X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1267 | return retVal; |
| 1268 | #else |
| 1269 | return MMURead8(address, M68K); |
| 1270 | #endif |
| 1271 | } |
| 1272 | |
| 1273 | |
| 1274 | /* |
| 1275 | void gpu_dump_disassembly(void); |
| 1276 | void gpu_dump_registers(void); |
| 1277 | */ |
| 1278 | |
| 1279 | unsigned int m68k_read_memory_16(unsigned int address) |
| 1280 | { |
| 1281 | #ifdef ALPINE_FUNCTIONS |
| 1282 | // Check if breakpoint on memory is active, and deal with it |
| 1283 | if (!startM68KTracing && m68k_brk_check(address)) |
| 1284 | { |
| 1285 | M68KDebugHalt(); |
| 1286 | } |
| 1287 | #endif |
| 1288 | |
| 1289 | // Musashi does this automagically for you, UAE core does not :-P |
| 1290 | address &= 0x00FFFFFF; |
| 1291 | #ifdef CPU_DEBUG_MEMORY |
| 1292 | /* if ((address >= 0x000000) && (address <= 0x3FFFFE)) |
| 1293 | { |
| 1294 | if (startMemLog) |
| 1295 | readMem[address] = 1, readMem[address + 1] = 1; |
| 1296 | }//*/ |
| 1297 | /* if (effect_start && (address >= 0x8064FC && address <= 0x806501)) |
| 1298 | { |
| 1299 | return 0x4E71; // NOP |
| 1300 | } |
| 1301 | if (effect_start2 && (address >= 0x806502 && address <= 0x806507)) |
| 1302 | { |
| 1303 | return 0x4E71; // NOP |
| 1304 | } |
| 1305 | if (effect_start3 && (address >= 0x806512 && address <= 0x806517)) |
| 1306 | { |
| 1307 | return 0x4E71; // NOP |
| 1308 | } |
| 1309 | if (effect_start4 && (address >= 0x806524 && address <= 0x806527)) |
| 1310 | { |
| 1311 | return 0x4E71; // NOP |
| 1312 | } |
| 1313 | if (effect_start5 && (address >= 0x80653E && address <= 0x806543)) //Collision detection! |
| 1314 | { |
| 1315 | return 0x4E71; // NOP |
| 1316 | } |
| 1317 | if (effect_start6 && (address >= 0x806544 && address <= 0x806547)) |
| 1318 | { |
| 1319 | return 0x4E71; // NOP |
| 1320 | }//*/ |
| 1321 | #endif |
| 1322 | //WriteLog("[RM16] Addr: %08X\n", address); |
| 1323 | /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005FBA) |
| 1324 | // for(int i=0; i<10000; i++) |
| 1325 | WriteLog("[M68K] In routine #6!\n");//*/ |
| 1326 | //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00006696) // GPU Program #4 |
| 1327 | //if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005B3C) // GPU Program #2 |
| 1328 | /*if (m68k_get_reg(NULL, M68K_REG_PC) == 0x00005BA8) // GPU Program #3 |
| 1329 | { |
| 1330 | WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address)); |
| 1331 | gpu_dump_registers(); |
| 1332 | gpu_dump_disassembly(); |
| 1333 | // for(int i=0; i<10000; i++) |
| 1334 | // WriteLog("[M68K] About to run GPU!\n"); |
| 1335 | }//*/ |
| 1336 | //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); |
| 1337 | /*if (m68k_get_reg(NULL, M68K_REG_PC) >= 0x00006696 && m68k_get_reg(NULL, M68K_REG_PC) <= 0x000066A8) |
| 1338 | { |
| 1339 | if (address == 0x000066A0) |
| 1340 | { |
| 1341 | gpu_dump_registers(); |
| 1342 | gpu_dump_disassembly(); |
| 1343 | } |
| 1344 | for(int i=0; i<10000; i++) |
| 1345 | WriteLog("[M68K] About to run GPU! (Addr:%08X, data:%04X)\n", address, TOMReadWord(address)); |
| 1346 | }//*/ |
| 1347 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. |
| 1348 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 |
| 1349 | || address == 0x1AF05E) |
| 1350 | WriteLog("[RM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, GET16(jaguar_mainRam, address));//*/ |
| 1351 | #ifndef USE_NEW_MMU |
| 1352 | unsigned int retVal = 0; |
| 1353 | |
| 1354 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1355 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 2))) |
| 1356 | { |
| 1357 | // retVal = (jaguar_mainRam[address] << 8) | jaguar_mainRam[address+1]; |
| 1358 | retVal = GET16(jaguarMainRAM, address); |
| 1359 | } |
| 1360 | // else if ((address >= 0x800000) && (address <= 0xDFFFFE)) |
| 1361 | else |
| 1362 | { |
| 1363 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) |
| 1364 | { |
| 1365 | // Memory Track reading... |
| 1366 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) |
| 1367 | { |
| 1368 | retVal = MTReadWord(address); |
| 1369 | } |
| 1370 | else |
| 1371 | { |
| 1372 | retVal = (jaguarMainROM[address - 0x800000] << 8) | jaguarMainROM[address - 0x800000 + 1]; |
| 1373 | } |
| 1374 | } |
| 1375 | else |
| 1376 | { |
| 1377 | if ((address >= 0xE00000) && (address <= 0xE3FFFE)) |
| 1378 | { |
| 1379 | // retVal = (jaguarBootROM[address - 0xE00000] << 8) | jaguarBootROM[address - 0xE00000 + 1]; |
| 1380 | // retVal = (jaguarDevBootROM1[address - 0xE00000] << 8) | jaguarDevBootROM1[address - 0xE00000 + 1]; |
| 1381 | retVal = (jagMemSpace[address] << 8) | jagMemSpace[address + 1]; |
| 1382 | } |
| 1383 | else |
| 1384 | { |
| 1385 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) |
| 1386 | { |
| 1387 | retVal = CDROMReadWord(address, M68K); |
| 1388 | } |
| 1389 | else |
| 1390 | { |
| 1391 | if ((address >= 0xF00000) && (address <= 0xF0FFFE)) |
| 1392 | { |
| 1393 | retVal = TOMReadWord(address, M68K); |
| 1394 | } |
| 1395 | else |
| 1396 | { |
| 1397 | if ((address >= 0xF10000) && (address <= 0xF1FFFE)) |
| 1398 | { |
| 1399 | retVal = JERRYReadWord(address, M68K); |
| 1400 | } |
| 1401 | else |
| 1402 | { |
| 1403 | retVal = jaguar_unknown_readword(address, M68K); |
| 1404 | } |
| 1405 | } |
| 1406 | } |
| 1407 | } |
| 1408 | } |
| 1409 | } |
| 1410 | |
| 1411 | //if (address >= 0xF1B000 && address <= 0xF1CFFF) |
| 1412 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1413 | //if (address >= 0x2800 && address <= 0x281F) |
| 1414 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1415 | //$8B3AE -> Transferred from $F1C010 |
| 1416 | //$8B5E4 -> Only +1 read at $808AA |
| 1417 | //if (address >= 0x8B5E4 && address <= 0x8B5E4 + 16) |
| 1418 | // WriteLog("M68K: Read word $%04X at $%08X [PC=%08X]\n", retVal, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1419 | return retVal; |
| 1420 | #else |
| 1421 | return MMURead16(address, M68K); |
| 1422 | #endif |
| 1423 | } |
| 1424 | |
| 1425 | |
| 1426 | // Alert message in case of exception vector request |
| 1427 | bool m68k_read_exception_vector(unsigned int address, char *text) |
| 1428 | { |
| 1429 | QString msg; |
| 1430 | QMessageBox msgBox; |
| 1431 | |
| 1432 | #if 0 |
| 1433 | msg.sprintf("68000 exception\n%s at $%06x", text, pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF]); |
| 1434 | #else |
| 1435 | msg.sprintf("68000 exception\n$%06x: %s", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], text); |
| 1436 | #endif |
| 1437 | msgBox.setText(msg); |
| 1438 | msgBox.setStandardButtons(QMessageBox::Abort); |
| 1439 | msgBox.setDefaultButton(QMessageBox::Abort); |
| 1440 | msgBox.exec(); |
| 1441 | return M68KDebugHalt(); |
| 1442 | } |
| 1443 | |
| 1444 | |
| 1445 | // Read 4 bytes from memory |
| 1446 | unsigned int m68k_read_memory_32(unsigned int address) |
| 1447 | { |
| 1448 | #ifdef ALPINE_FUNCTIONS |
| 1449 | // Check if breakpoint on memory is active, and deal with it |
| 1450 | if (!startM68KTracing && m68k_brk_check(address)) |
| 1451 | { |
| 1452 | M68KDebugHalt(); |
| 1453 | } |
| 1454 | #endif |
| 1455 | |
| 1456 | // Musashi does this automagically for you, UAE core does not :-P |
| 1457 | address &= 0x00FFFFFF; |
| 1458 | //; So, it seems that it stores the returned DWORD at $51136 and $FB074. |
| 1459 | /* if (address == 0x51136 || address == 0xFB074 || address == 0x1AF05E) |
| 1460 | WriteLog("[RM32 PC=%08X] Addr: %08X, val: %08X\n", m68k_get_reg(NULL, M68K_REG_PC), address, (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2));//*/ |
| 1461 | |
| 1462 | //WriteLog("--> [RM32]\n"); |
| 1463 | #ifndef USE_NEW_MMU |
| 1464 | //uint32_t retVal = 0; |
| 1465 | |
| 1466 | // check exception vectors access |
| 1467 | if (vjs.allowM68KExceptionCatch && (address >= 0x8) && (address <= 0x7c)) |
| 1468 | { |
| 1469 | switch (address) |
| 1470 | { |
| 1471 | case 0x08: |
| 1472 | m68k_read_exception_vector(address, "Bus error"); |
| 1473 | break; |
| 1474 | |
| 1475 | case 0x0c: |
| 1476 | m68k_read_exception_vector(address, "Address error"); |
| 1477 | break; |
| 1478 | |
| 1479 | case 0x10: |
| 1480 | m68k_read_exception_vector(address, "Illegal instruction"); |
| 1481 | break; |
| 1482 | |
| 1483 | case 0x2c: |
| 1484 | m68k_read_exception_vector(address, "Unimplemented instruction"); |
| 1485 | break; |
| 1486 | |
| 1487 | default: |
| 1488 | m68k_read_exception_vector(address, "Exception not referenced"); |
| 1489 | break; |
| 1490 | } |
| 1491 | |
| 1492 | frameDone = true; // Hack to avoid the freeze of the emulator |
| 1493 | } |
| 1494 | else |
| 1495 | { |
| 1496 | // check ROM or Memory Track access |
| 1497 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) |
| 1498 | { |
| 1499 | // Memory Track reading... |
| 1500 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) |
| 1501 | { |
| 1502 | return MTReadLong(address); |
| 1503 | } |
| 1504 | else |
| 1505 | { |
| 1506 | return GET32(jaguarMainROM, address - 0x800000); |
| 1507 | } |
| 1508 | } |
| 1509 | } |
| 1510 | |
| 1511 | // return value from memory |
| 1512 | return (m68k_read_memory_16(address) << 16) | m68k_read_memory_16(address + 2); |
| 1513 | #else |
| 1514 | return MMURead32(address, M68K); |
| 1515 | #endif |
| 1516 | } |
| 1517 | |
| 1518 | |
| 1519 | // Alert message in case of writing to unknown memory location |
| 1520 | bool m68k_write_unknown_alert(unsigned int address, char *bits, unsigned int value) |
| 1521 | { |
| 1522 | QString msg; |
| 1523 | QMessageBox msgBox; |
| 1524 | |
| 1525 | msg.sprintf("$%06x: Writing at this unknown memory location $%06x with a (%s bits) value of $%0x", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], address, bits, value); |
| 1526 | msgBox.setText(msg); |
| 1527 | msgBox.setStandardButtons(QMessageBox::Abort); |
| 1528 | msgBox.setDefaultButton(QMessageBox::Abort); |
| 1529 | msgBox.exec(); |
| 1530 | return M68KDebugHalt(); |
| 1531 | } |
| 1532 | |
| 1533 | |
| 1534 | // Alert message in case of writing to cartridge/ROM memory location |
| 1535 | bool m68k_write_cartridge_alert(unsigned int address, char *bits, unsigned int value) |
| 1536 | { |
| 1537 | if (!M68KDebugHaltStatus()) |
| 1538 | { |
| 1539 | QString msg; |
| 1540 | QMessageBox msgBox; |
| 1541 | |
| 1542 | msg.sprintf("$%06x: Writing at this ROM cartridge location $%06x with a (%s bits) value of $%0x", pcQueue[pcQPtr ? (pcQPtr - 1) : 0x3FF], address, bits, value); |
| 1543 | msgBox.setText(msg); |
| 1544 | |
| 1545 | msgBox.setInformativeText("Do you want to continue?"); |
| 1546 | msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No); |
| 1547 | msgBox.setDefaultButton(QMessageBox::No); |
| 1548 | |
| 1549 | int retVal = msgBox.exec(); |
| 1550 | |
| 1551 | if (retVal == QMessageBox::Yes) |
| 1552 | { |
| 1553 | return false; |
| 1554 | } |
| 1555 | else |
| 1556 | { |
| 1557 | return M68KDebugHalt(); |
| 1558 | } |
| 1559 | } |
| 1560 | else |
| 1561 | { |
| 1562 | return 1; |
| 1563 | } |
| 1564 | } |
| 1565 | |
| 1566 | |
| 1567 | // Check memory write location |
| 1568 | // BPM & cartridge/ROM detections |
| 1569 | bool m68k_write_memory_check(unsigned int address, char *bits, unsigned int value) |
| 1570 | { |
| 1571 | unsigned int address1; |
| 1572 | |
| 1573 | #ifdef ALPINE_FUNCTIONS |
| 1574 | // Check if breakpoint on memory is active, and deal with it |
| 1575 | if (!M68KDebugHaltStatus() && bpmActive && (address == bpmAddress1)) |
| 1576 | { |
| 1577 | return M68KDebugHalt(); |
| 1578 | } |
| 1579 | else |
| 1580 | #endif |
| 1581 | { |
| 1582 | // Rom writing authorisation detection |
| 1583 | if (!vjs.allowWritesToROM) |
| 1584 | { |
| 1585 | // Calcul the end address |
| 1586 | if (strstr(bits, "32")) |
| 1587 | { |
| 1588 | address1 = address + 3; |
| 1589 | } |
| 1590 | else |
| 1591 | { |
| 1592 | if (strstr(bits, "16")) |
| 1593 | { |
| 1594 | address1 = address + 1; |
| 1595 | } |
| 1596 | else |
| 1597 | { |
| 1598 | address1 = address; |
| 1599 | } |
| 1600 | } |
| 1601 | |
| 1602 | // Rom writing detection |
| 1603 | if ((address >= 0x800000) && (address1 < 0xDFFF00)) |
| 1604 | { |
| 1605 | return m68k_write_cartridge_alert(address, bits, value); |
| 1606 | } |
| 1607 | } |
| 1608 | |
| 1609 | return false; |
| 1610 | } |
| 1611 | } |
| 1612 | |
| 1613 | |
| 1614 | // Memory write location on 8 bits |
| 1615 | void m68k_write_memory_8(unsigned int address, unsigned int value) |
| 1616 | { |
| 1617 | // Check memory write location on 8 bits |
| 1618 | if (!m68k_write_memory_check(address, "8", value)) |
| 1619 | { |
| 1620 | // Musashi does this automagically for you, UAE core does not :-P |
| 1621 | //address &= 0x00FFFFFF; |
| 1622 | #ifdef CPU_DEBUG_MEMORY |
| 1623 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1624 | if ((address >= 0x000000) && (address <= 0x1FFFFF)) |
| 1625 | { |
| 1626 | if (startMemLog) |
| 1627 | { |
| 1628 | if (value > writeMemMax[address]) |
| 1629 | writeMemMax[address] = value; |
| 1630 | if (value < writeMemMin[address]) |
| 1631 | writeMemMin[address] = value; |
| 1632 | } |
| 1633 | } |
| 1634 | #endif |
| 1635 | /*if (address == 0x4E00) |
| 1636 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1637 | //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) |
| 1638 | // WriteLog("M68K: Writing %02X at %08X\n", value, address); |
| 1639 | //WriteLog("[WM8 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); |
| 1640 | /*if (effect_start) |
| 1641 | if (address >= 0x18FA70 && address < (0x18FA70 + 8000)) |
| 1642 | WriteLog("M68K: Byte %02X written at %08X by 68K\n", value, address);//*/ |
| 1643 | //$53D0 |
| 1644 | /*if (address >= 0x53D0 && address <= 0x53FF) |
| 1645 | printf("M68K: Writing byte $%02X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1646 | //Testing AvP on UAE core... |
| 1647 | //000075A0: FFFFF80E B6320220 (BITMAP) |
| 1648 | /*if (address == 0x75A0 && value == 0xFF) |
| 1649 | printf("M68K: (8) Tripwire hit...\n");//*/ |
| 1650 | |
| 1651 | #ifndef USE_NEW_MMU |
| 1652 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1653 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 1))) |
| 1654 | { |
| 1655 | jaguarMainRAM[address] = value; |
| 1656 | } |
| 1657 | else |
| 1658 | { |
| 1659 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFF)) |
| 1660 | { |
| 1661 | CDROMWriteByte(address, value, M68K); |
| 1662 | } |
| 1663 | else |
| 1664 | { |
| 1665 | if ((address >= 0xF00000) && (address <= 0xF0FFFF)) |
| 1666 | { |
| 1667 | TOMWriteByte(address, value, M68K); |
| 1668 | } |
| 1669 | else |
| 1670 | { |
| 1671 | if ((address >= 0xF10000) && (address <= 0xF1FFFF)) |
| 1672 | { |
| 1673 | JERRYWriteByte(address, value, M68K); |
| 1674 | } |
| 1675 | else |
| 1676 | { |
| 1677 | if ((address >= 0x800000) && (address <= 0xDFFEFF)) |
| 1678 | { |
| 1679 | jagMemSpace[address] = (uint8_t)value; |
| 1680 | } |
| 1681 | else |
| 1682 | { |
| 1683 | jaguar_unknown_writebyte(address, value, M68K); |
| 1684 | } |
| 1685 | } |
| 1686 | } |
| 1687 | } |
| 1688 | } |
| 1689 | #else |
| 1690 | MMUWrite8(address, value, M68K); |
| 1691 | #endif |
| 1692 | } |
| 1693 | } |
| 1694 | |
| 1695 | |
| 1696 | // Memory write location on 16 bits |
| 1697 | void m68k_write_memory_16(unsigned int address, unsigned int value) |
| 1698 | { |
| 1699 | // Check memory write location on 16 bits |
| 1700 | if (!m68k_write_memory_check(address, "16", value)) |
| 1701 | { |
| 1702 | // Musashi does this automagically for you, UAE core does not :-P |
| 1703 | //address &= 0x00FFFFFF; |
| 1704 | #ifdef CPU_DEBUG_MEMORY |
| 1705 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1706 | if ((address >= 0x000000) && (address <= 0x1FFFFE)) |
| 1707 | { |
| 1708 | if (startMemLog) |
| 1709 | { |
| 1710 | uint8_t hi = value >> 8, lo = value & 0xFF; |
| 1711 | |
| 1712 | if (hi > writeMemMax[address]) |
| 1713 | writeMemMax[address] = hi; |
| 1714 | if (hi < writeMemMin[address]) |
| 1715 | writeMemMin[address] = hi; |
| 1716 | |
| 1717 | if (lo > writeMemMax[address + 1]) |
| 1718 | writeMemMax[address + 1] = lo; |
| 1719 | if (lo < writeMemMin[address + 1]) |
| 1720 | writeMemMin[address + 1] = lo; |
| 1721 | } |
| 1722 | } |
| 1723 | #endif |
| 1724 | /*if (address == 0x4E00) |
| 1725 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1726 | //if ((address >= 0x1FF020 && address <= 0x1FF03F) || (address >= 0x1FF820 && address <= 0x1FF83F)) |
| 1727 | // WriteLog("M68K: Writing %04X at %08X\n", value, address); |
| 1728 | //WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value); |
| 1729 | //if (address >= 0xF02200 && address <= 0xF0229F) |
| 1730 | // WriteLog("M68K: Writing to blitter --> %04X at %08X\n", value, address); |
| 1731 | //if (address >= 0x0E75D0 && address <= 0x0E75E7) |
| 1732 | // WriteLog("M68K: Writing %04X at %08X, M68K PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1733 | /*extern uint32_t totalFrames; |
| 1734 | if (address == 0xF02114) |
| 1735 | WriteLog("M68K: Writing to GPU_CTRL (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC)); |
| 1736 | if (address == 0xF02110) |
| 1737 | WriteLog("M68K: Writing to GPU_PC (frame:%u)... [M68K PC:%08X]\n", totalFrames, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1738 | //if (address >= 0xF03B00 && address <= 0xF03DFF) |
| 1739 | // WriteLog("M68K: Writing %04X to %08X...\n", value, address); |
| 1740 | |
| 1741 | /*if (address == 0x0100)//64*4) |
| 1742 | WriteLog("M68K: Wrote word to VI vector value %04X...\n", value);//*/ |
| 1743 | /*if (effect_start) |
| 1744 | if (address >= 0x18FA70 && address < (0x18FA70 + 8000)) |
| 1745 | WriteLog("M68K: Word %04X written at %08X by 68K\n", value, address);//*/ |
| 1746 | /* if (address == 0x51136 || address == 0x51138 || address == 0xFB074 || address == 0xFB076 |
| 1747 | || address == 0x1AF05E) |
| 1748 | WriteLog("[WM16 PC=%08X] Addr: %08X, val: %04X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ |
| 1749 | //$53D0 |
| 1750 | /*if (address >= 0x53D0 && address <= 0x53FF) |
| 1751 | printf("M68K: Writing word $%04X at $%08X, PC=$%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1752 | //Testing AvP on UAE core... |
| 1753 | //000075A0: FFFFF80E B6320220 (BITMAP) |
| 1754 | /*if (address == 0x75A0 && value == 0xFFFF) |
| 1755 | { |
| 1756 | printf("\nM68K: (16) Tripwire hit...\n"); |
| 1757 | ShowM68KContext(); |
| 1758 | }//*/ |
| 1759 | |
| 1760 | #ifndef USE_NEW_MMU |
| 1761 | // Note that the Jaguar only has 2M of RAM, not 4! |
| 1762 | if ((address >= 0x000000) && (address <= (vjs.DRAM_size - 2))) |
| 1763 | { |
| 1764 | /* jaguar_mainRam[address] = value >> 8; |
| 1765 | jaguar_mainRam[address + 1] = value & 0xFF;*/ |
| 1766 | SET16(jaguarMainRAM, address, value); |
| 1767 | } |
| 1768 | else |
| 1769 | { |
| 1770 | // Memory Track device writes.... |
| 1771 | if ((address >= 0x800000) && (address <= 0x87FFFE)) |
| 1772 | { |
| 1773 | if (((TOMGetMEMCON1() & 0x0006) == (2 << 1)) && (jaguarMainROMCRC32 == 0xFDF37F47)) |
| 1774 | { |
| 1775 | MTWriteWord(address, value); |
| 1776 | return; |
| 1777 | } |
| 1778 | } |
| 1779 | |
| 1780 | if ((address >= 0xDFFF00) && (address <= 0xDFFFFE)) |
| 1781 | { |
| 1782 | CDROMWriteWord(address, value, M68K); |
| 1783 | } |
| 1784 | else |
| 1785 | { |
| 1786 | if ((address >= 0xF00000) && (address <= 0xF0FFFE)) |
| 1787 | { |
| 1788 | TOMWriteWord(address, value, M68K); |
| 1789 | } |
| 1790 | else |
| 1791 | { |
| 1792 | if ((address >= 0xF10000) && (address <= 0xF1FFFE)) |
| 1793 | { |
| 1794 | JERRYWriteWord(address, value, M68K); |
| 1795 | } |
| 1796 | else |
| 1797 | { |
| 1798 | if ((address >= 0x800000) && (address <= 0xDFFEFE)) |
| 1799 | { |
| 1800 | SET16(jagMemSpace, address, value); |
| 1801 | } |
| 1802 | else |
| 1803 | { |
| 1804 | jaguar_unknown_writeword(address, value, M68K); |
| 1805 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
| 1806 | WriteLog("\tA0=%08X, A1=%08X, D0=%08X, D1=%08X\n", m68k_get_reg(NULL, M68K_REG_A0), m68k_get_reg(NULL, M68K_REG_A1), m68k_get_reg(NULL, M68K_REG_D0), m68k_get_reg(NULL, M68K_REG_D1)); |
| 1807 | #endif |
| 1808 | } |
| 1809 | } |
| 1810 | } |
| 1811 | } |
| 1812 | } |
| 1813 | #else |
| 1814 | MMUWrite16(address, value, M68K); |
| 1815 | #endif |
| 1816 | } |
| 1817 | } |
| 1818 | |
| 1819 | |
| 1820 | // Memory write location on 32 bits |
| 1821 | void m68k_write_memory_32(unsigned int address, unsigned int value) |
| 1822 | { |
| 1823 | // Check memory write location on 32 bits |
| 1824 | if (!m68k_write_memory_check(address, "32", value)) |
| 1825 | { |
| 1826 | // Musashi does this automagically for you, UAE core does not :-P |
| 1827 | //address &= 0x00FFFFFF; |
| 1828 | /*if (address == 0x4E00) |
| 1829 | WriteLog("M68K: Writing %02X at %08X, PC=%08X\n", value, address, m68k_get_reg(NULL, M68K_REG_PC));//*/ |
| 1830 | //WriteLog("--> [WM32]\n"); |
| 1831 | /*if (address == 0x0100)//64*4) |
| 1832 | WriteLog("M68K: Wrote dword to VI vector value %08X...\n", value);//*/ |
| 1833 | /*if (address >= 0xF03214 && address < 0xF0321F) |
| 1834 | WriteLog("M68K: Writing DWORD (%08X) to GPU RAM (%08X)...\n", value, address);//*/ |
| 1835 | //M68K: Writing DWORD (88E30047) to GPU RAM (00F03214)... |
| 1836 | /*extern bool doGPUDis; |
| 1837 | if (address == 0xF03214 && value == 0x88E30047) |
| 1838 | // start = true; |
| 1839 | doGPUDis = true;//*/ |
| 1840 | /* if (address == 0x51136 || address == 0xFB074) |
| 1841 | WriteLog("[WM32 PC=%08X] Addr: %08X, val: %02X\n", m68k_get_reg(NULL, M68K_REG_PC), address, value);//*/ |
| 1842 | //Testing AvP on UAE core... |
| 1843 | //000075A0: FFFFF80E B6320220 (BITMAP) |
| 1844 | /*if (address == 0x75A0 && (value & 0xFFFF0000) == 0xFFFF0000) |
| 1845 | { |
| 1846 | printf("\nM68K: (32) Tripwire hit...\n"); |
| 1847 | ShowM68KContext(); |
| 1848 | }//*/ |
| 1849 | |
| 1850 | #ifndef USE_NEW_MMU |
| 1851 | m68k_write_memory_16(address, value >> 16); |
| 1852 | m68k_write_memory_16(address + 2, value & 0xFFFF); |
| 1853 | #else |
| 1854 | MMUWrite32(address, value, M68K); |
| 1855 | #endif |
| 1856 | } |
| 1857 | } |
| 1858 | |
| 1859 | |
| 1860 | uint32_t JaguarGetHandler(uint32_t i) |
| 1861 | { |
| 1862 | return JaguarReadLong(i * 4); |
| 1863 | } |
| 1864 | |
| 1865 | |
| 1866 | bool JaguarInterruptHandlerIsValid(uint32_t i) // Debug use only... |
| 1867 | { |
| 1868 | uint32_t handler = JaguarGetHandler(i); |
| 1869 | return (handler && (handler != 0xFFFFFFFF) ? true : false); |
| 1870 | } |
| 1871 | |
| 1872 | |
| 1873 | void M68K_show_context(void) |
| 1874 | { |
| 1875 | WriteLog("68K PC=%06X\n", m68k_get_reg(NULL, M68K_REG_PC)); |
| 1876 | |
| 1877 | for(int i=M68K_REG_D0; i<=M68K_REG_D7; i++) |
| 1878 | { |
| 1879 | WriteLog("D%i = %08X ", i-M68K_REG_D0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 1880 | |
| 1881 | if (i == M68K_REG_D3 || i == M68K_REG_D7) |
| 1882 | WriteLog("\n"); |
| 1883 | } |
| 1884 | |
| 1885 | for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) |
| 1886 | { |
| 1887 | WriteLog("A%i = %08X ", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 1888 | |
| 1889 | if (i == M68K_REG_A3 || i == M68K_REG_A7) |
| 1890 | WriteLog("\n"); |
| 1891 | } |
| 1892 | |
| 1893 | WriteLog("68K disasm\n"); |
| 1894 | // jaguar_dasm(s68000readPC()-0x1000,0x20000); |
| 1895 | JaguarDasm(m68k_get_reg(NULL, M68K_REG_PC) - 0x80, 0x200); |
| 1896 | // jaguar_dasm(0x5000, 0x14414); |
| 1897 | |
| 1898 | // WriteLog("\n.......[Cart start]...........\n\n"); |
| 1899 | // jaguar_dasm(0x192000, 0x1000);//0x200); |
| 1900 | |
| 1901 | WriteLog("..................\n"); |
| 1902 | |
| 1903 | if (TOMIRQEnabled(IRQ_VIDEO)) |
| 1904 | { |
| 1905 | WriteLog("video int: enabled\n"); |
| 1906 | JaguarDasm(JaguarGetHandler(64), 0x200); |
| 1907 | } |
| 1908 | else |
| 1909 | WriteLog("video int: disabled\n"); |
| 1910 | |
| 1911 | WriteLog("..................\n"); |
| 1912 | |
| 1913 | for(int i=0; i<256; i++) |
| 1914 | { |
| 1915 | WriteLog("handler %03i at ", i);//$%08X\n", i, (unsigned int)JaguarGetHandler(i)); |
| 1916 | uint32_t address = (uint32_t)JaguarGetHandler(i); |
| 1917 | |
| 1918 | if (address == 0) |
| 1919 | WriteLog(".........\n"); |
| 1920 | else |
| 1921 | WriteLog("$%08X\n", address); |
| 1922 | } |
| 1923 | } |
| 1924 | |
| 1925 | |
| 1926 | // |
| 1927 | // Unknown read/write byte/word routines |
| 1928 | // |
| 1929 | |
| 1930 | // It's hard to believe that developers would be sloppy with their memory |
| 1931 | // writes, yet in some cases the developers screwed up royal. E.g., Club Drive |
| 1932 | // has the following code: |
| 1933 | // |
| 1934 | // 807EC4: movea.l #$f1b000, A1 |
| 1935 | // 807ECA: movea.l #$8129e0, A0 |
| 1936 | // 807ED0: move.l A0, D0 |
| 1937 | // 807ED2: move.l #$f1bb94, D1 |
| 1938 | // 807ED8: sub.l D0, D1 |
| 1939 | // 807EDA: lsr.l #2, D1 |
| 1940 | // 807EDC: move.l (A0)+, (A1)+ |
| 1941 | // 807EDE: dbra D1, 807edc |
| 1942 | // |
| 1943 | // The problem is at $807ED0--instead of putting A0 into D0, they really meant |
| 1944 | // to put A1 in. This mistake causes it to try and overwrite approximately |
| 1945 | // $700000 worth of address space! (That is, unless the 68K causes a bus |
| 1946 | // error...) |
| 1947 | |
| 1948 | void jaguar_unknown_writebyte(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) |
| 1949 | { |
| 1950 | m68k_write_unknown_alert(address, "8", data); |
| 1951 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
| 1952 | WriteLog("Jaguar: Unknown byte %02X written at %08X by %s (M68K PC=%06X)\n", data, address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); |
| 1953 | #endif |
| 1954 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS |
| 1955 | // extern bool finished; |
| 1956 | finished = true; |
| 1957 | // extern bool doDSPDis; |
| 1958 | if (who == DSP) |
| 1959 | doDSPDis = true; |
| 1960 | #endif |
| 1961 | } |
| 1962 | |
| 1963 | |
| 1964 | void jaguar_unknown_writeword(unsigned address, unsigned data, uint32_t who/*=UNKNOWN*/) |
| 1965 | { |
| 1966 | m68k_write_unknown_alert(address, "16", data); |
| 1967 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
| 1968 | WriteLog("Jaguar: Unknown word %04X written at %08X by %s (M68K PC=%06X)\n", data, address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); |
| 1969 | #endif |
| 1970 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS |
| 1971 | // extern bool finished; |
| 1972 | finished = true; |
| 1973 | // extern bool doDSPDis; |
| 1974 | if (who == DSP) |
| 1975 | doDSPDis = true; |
| 1976 | #endif |
| 1977 | } |
| 1978 | |
| 1979 | |
| 1980 | unsigned jaguar_unknown_readbyte(unsigned address, uint32_t who/*=UNKNOWN*/) |
| 1981 | { |
| 1982 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
| 1983 | WriteLog("Jaguar: Unknown byte read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); |
| 1984 | #endif |
| 1985 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS |
| 1986 | // extern bool finished; |
| 1987 | finished = true; |
| 1988 | // extern bool doDSPDis; |
| 1989 | if (who == DSP) |
| 1990 | doDSPDis = true; |
| 1991 | #endif |
| 1992 | return 0xFF; |
| 1993 | } |
| 1994 | |
| 1995 | |
| 1996 | unsigned jaguar_unknown_readword(unsigned address, uint32_t who/*=UNKNOWN*/) |
| 1997 | { |
| 1998 | #ifdef LOG_UNMAPPED_MEMORY_ACCESSES |
| 1999 | WriteLog("Jaguar: Unknown word read at %08X by %s (M68K PC=%06X)\n", address, whoName[who], m68k_get_reg(NULL, M68K_REG_PC)); |
| 2000 | #endif |
| 2001 | #ifdef ABORT_ON_UNMAPPED_MEMORY_ACCESS |
| 2002 | // extern bool finished; |
| 2003 | finished = true; |
| 2004 | // extern bool doDSPDis; |
| 2005 | if (who == DSP) |
| 2006 | doDSPDis = true; |
| 2007 | #endif |
| 2008 | return 0xFFFF; |
| 2009 | } |
| 2010 | |
| 2011 | |
| 2012 | // |
| 2013 | // Disassemble M68K instructions at the given offset |
| 2014 | // |
| 2015 | |
| 2016 | unsigned int m68k_read_disassembler_8(unsigned int address) |
| 2017 | { |
| 2018 | return m68k_read_memory_8(address); |
| 2019 | } |
| 2020 | |
| 2021 | |
| 2022 | unsigned int m68k_read_disassembler_16(unsigned int address) |
| 2023 | { |
| 2024 | return m68k_read_memory_16(address); |
| 2025 | } |
| 2026 | |
| 2027 | |
| 2028 | unsigned int m68k_read_disassembler_32(unsigned int address) |
| 2029 | { |
| 2030 | return m68k_read_memory_32(address); |
| 2031 | } |
| 2032 | |
| 2033 | |
| 2034 | void JaguarDasm(uint32_t offset, uint32_t qt) |
| 2035 | { |
| 2036 | #ifdef CPU_DEBUG |
| 2037 | static char buffer[2048];//, mem[64]; |
| 2038 | int pc = offset, oldpc; |
| 2039 | |
| 2040 | for(uint32_t i=0; i<qt; i++) |
| 2041 | { |
| 2042 | /* oldpc = pc; |
| 2043 | for(int j=0; j<64; j++) |
| 2044 | mem[j^0x01] = jaguar_byte_read(pc + j); |
| 2045 | |
| 2046 | pc += Dasm68000((char *)mem, buffer, 0); |
| 2047 | WriteLog("%08X: %s\n", oldpc, buffer);//*/ |
| 2048 | oldpc = pc; |
| 2049 | pc += m68k_disassemble(buffer, pc, 0, 1);//M68K_CPU_TYPE_68000); |
| 2050 | WriteLog("%08X: %s\n", oldpc, buffer);//*/ |
| 2051 | } |
| 2052 | #endif |
| 2053 | } |
| 2054 | |
| 2055 | |
| 2056 | uint8_t JaguarReadByte(uint32_t offset, uint32_t who/*=UNKNOWN*/) |
| 2057 | { |
| 2058 | uint8_t data = 0x00; |
| 2059 | offset &= 0xFFFFFF; |
| 2060 | |
| 2061 | // First 2M is mirrored in the $0 - $7FFFFF range |
| 2062 | if (offset < 0x800000) |
| 2063 | data = jaguarMainRAM[offset & (vjs.DRAM_size - 1)]; |
| 2064 | else if ((offset >= 0x800000) && (offset < 0xDFFF00)) |
| 2065 | data = jaguarMainROM[offset - 0x800000]; |
| 2066 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) |
| 2067 | data = CDROMReadByte(offset, who); |
| 2068 | else if ((offset >= 0xE00000) && (offset < 0xE40000)) |
| 2069 | // data = jaguarBootROM[offset & 0x3FFFF]; |
| 2070 | // data = jaguarDevBootROM1[offset & 0x3FFFF]; |
| 2071 | data = jagMemSpace[offset]; |
| 2072 | else if ((offset >= 0xF00000) && (offset < 0xF10000)) |
| 2073 | data = TOMReadByte(offset, who); |
| 2074 | else if ((offset >= 0xF10000) && (offset < 0xF20000)) |
| 2075 | data = JERRYReadByte(offset, who); |
| 2076 | else |
| 2077 | data = jaguar_unknown_readbyte(offset, who); |
| 2078 | |
| 2079 | return data; |
| 2080 | } |
| 2081 | |
| 2082 | |
| 2083 | uint16_t JaguarReadWord(uint32_t offset, uint32_t who/*=UNKNOWN*/) |
| 2084 | { |
| 2085 | offset &= 0xFFFFFF; |
| 2086 | |
| 2087 | // First 2M is mirrored in the $0 - $7FFFFF range |
| 2088 | if (offset < 0x800000) |
| 2089 | { |
| 2090 | return (jaguarMainRAM[(offset+0) & (vjs.DRAM_size - 1)] << 8) | jaguarMainRAM[(offset+1) & (vjs.DRAM_size - 1)]; |
| 2091 | } |
| 2092 | else if ((offset >= 0x800000) && (offset < 0xDFFF00)) |
| 2093 | { |
| 2094 | offset -= 0x800000; |
| 2095 | return (jaguarMainROM[offset+0] << 8) | jaguarMainROM[offset+1]; |
| 2096 | } |
| 2097 | // else if ((offset >= 0xDFFF00) && (offset < 0xDFFF00)) |
| 2098 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFE)) |
| 2099 | return CDROMReadWord(offset, who); |
| 2100 | else if ((offset >= 0xE00000) && (offset <= 0xE3FFFE)) |
| 2101 | // return (jaguarBootROM[(offset+0) & 0x3FFFF] << 8) | jaguarBootROM[(offset+1) & 0x3FFFF]; |
| 2102 | // return (jaguarDevBootROM1[(offset+0) & 0x3FFFF] << 8) | jaguarDevBootROM1[(offset+1) & 0x3FFFF]; |
| 2103 | return (jagMemSpace[offset + 0] << 8) | jagMemSpace[offset + 1]; |
| 2104 | else if ((offset >= 0xF00000) && (offset <= 0xF0FFFE)) |
| 2105 | return TOMReadWord(offset, who); |
| 2106 | else if ((offset >= 0xF10000) && (offset <= 0xF1FFFE)) |
| 2107 | return JERRYReadWord(offset, who); |
| 2108 | |
| 2109 | return jaguar_unknown_readword(offset, who); |
| 2110 | } |
| 2111 | |
| 2112 | |
| 2113 | void JaguarWriteByte(uint32_t offset, uint8_t data, uint32_t who/*=UNKNOWN*/) |
| 2114 | { |
| 2115 | /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18) |
| 2116 | { |
| 2117 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]); |
| 2118 | }//*/ |
| 2119 | /* if (offset >= 0x4E00 && offset < 0x4E04) |
| 2120 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ |
| 2121 | //Need to check for writes in the range of $18FA70 + 8000... |
| 2122 | /*if (effect_start) |
| 2123 | if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000)) |
| 2124 | WriteLog("JWB: Byte %02X written at %08X by %s\n", data, offset, whoName[who]);//*/ |
| 2125 | |
| 2126 | offset &= 0xFFFFFF; |
| 2127 | |
| 2128 | // First 2M is mirrored in the $0 - $7FFFFF range |
| 2129 | if (offset < 0x800000) |
| 2130 | { |
| 2131 | jaguarMainRAM[offset & (vjs.DRAM_size - 1)] = data; |
| 2132 | return; |
| 2133 | } |
| 2134 | else if ((offset >= 0xDFFF00) && (offset <= 0xDFFFFF)) |
| 2135 | { |
| 2136 | CDROMWriteByte(offset, data, who); |
| 2137 | return; |
| 2138 | } |
| 2139 | else if ((offset >= 0xF00000) && (offset <= 0xF0FFFF)) |
| 2140 | { |
| 2141 | TOMWriteByte(offset, data, who); |
| 2142 | return; |
| 2143 | } |
| 2144 | else if ((offset >= 0xF10000) && (offset <= 0xF1FFFF)) |
| 2145 | { |
| 2146 | JERRYWriteByte(offset, data, who); |
| 2147 | return; |
| 2148 | } |
| 2149 | |
| 2150 | jaguar_unknown_writebyte(offset, data, who); |
| 2151 | } |
| 2152 | |
| 2153 | |
| 2154 | uint32_t starCount; |
| 2155 | void JaguarWriteWord(uint32_t offset, uint16_t data, uint32_t who/*=UNKNOWN*/) |
| 2156 | { |
| 2157 | /* if ((offset & 0x1FFFFF) >= 0xE00 && (offset & 0x1FFFFF) < 0xE18) |
| 2158 | { |
| 2159 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]); |
| 2160 | WriteLog(" GPU PC = $%06X\n", GPUReadLong(0xF02110, DEBUG)); |
| 2161 | }//*/ |
| 2162 | /* if (offset >= 0x4E00 && offset < 0x4E04) |
| 2163 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/ |
| 2164 | /*if (offset == 0x0100)//64*4) |
| 2165 | WriteLog("M68K: %s wrote word to VI vector value %04X...\n", whoName[who], data); |
| 2166 | if (offset == 0x0102)//64*4) |
| 2167 | WriteLog("M68K: %s wrote word to VI vector+2 value %04X...\n", whoName[who], data);//*/ |
| 2168 | //TEMP--Mirror of F03000? Yes, but only 32-bit CPUs can do it (i.e., NOT the 68K!) |
| 2169 | // PLUS, you would handle this in the GPU/DSP WriteLong code! Not here! |
| 2170 | //Need to check for writes in the range of $18FA70 + 8000... |
| 2171 | /*if (effect_start) |
| 2172 | if (offset >= 0x18FA70 && offset < (0x18FA70 + 8000)) |
| 2173 | WriteLog("JWW: Word %04X written at %08X by %s\n", data, offset, whoName[who]);//*/ |
| 2174 | /*if (offset >= 0x2C00 && offset <= 0x2CFF) |
| 2175 | WriteLog("Jaguar: Word %04X written to TOC+%02X by %s\n", data, offset-0x2C00, whoName[who]);//*/ |
| 2176 | |
| 2177 | offset &= 0xFFFFFF; |
| 2178 | |
| 2179 | // First 2M is mirrored in the $0 - $7FFFFF range |
| 2180 | if (offset <= 0x7FFFFE) |
| 2181 | { |
| 2182 | /* |
| 2183 | GPU Table (CD BIOS) |
| 2184 | |
| 2185 | 1A 69 F0 ($0000) -> Starfield |
| 2186 | 1A 73 C8 ($0001) -> Final clearing blit & bitmap blit? |
| 2187 | 1A 79 F0 ($0002) |
| 2188 | 1A 88 C0 ($0003) |
| 2189 | 1A 8F E8 ($0004) -> "Jaguar" small color logo? |
| 2190 | 1A 95 20 ($0005) |
| 2191 | 1A 9F 08 ($0006) |
| 2192 | 1A A1 38 ($0007) |
| 2193 | 1A AB 38 ($0008) |
| 2194 | 1A B3 C8 ($0009) |
| 2195 | 1A B9 C0 ($000A) |
| 2196 | */ |
| 2197 | |
| 2198 | //This MUST be done by the 68K! |
| 2199 | /*if (offset == 0x670C) |
| 2200 | WriteLog("Jaguar: %s writing to location $670C...\n", whoName[who]);*/ |
| 2201 | |
| 2202 | /*extern bool doGPUDis; |
| 2203 | //if ((offset == 0x100000 + 75522) && who == GPU) // 76,226 -> 75522 |
| 2204 | if ((offset == 0x100000 + 128470) && who == GPU) // 107,167 -> 128470 (384 x 250 screen size 16BPP) |
| 2205 | //if ((offset >= 0x100000 && offset <= 0x12C087) && who == GPU) |
| 2206 | doGPUDis = true;//*/ |
| 2207 | /*if (offset == 0x100000 + 128470) // 107,167 -> 128470 (384 x 250 screen size 16BPP) |
| 2208 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]); |
| 2209 | if ((data & 0xFF00) != 0x7700) |
| 2210 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/ |
| 2211 | /*if ((offset >= 0x100000 && offset <= 0x147FFF) && who == GPU) |
| 2212 | return;//*/ |
| 2213 | /*if ((data & 0xFF00) != 0x7700 && who == GPU) |
| 2214 | WriteLog("JWW: Writing value %04X at %08X by %s...\n", data, offset, whoName[who]);//*/ |
| 2215 | /*if ((offset >= 0x100000 + 0x48000 && offset <= 0x12C087 + 0x48000) && who == GPU) |
| 2216 | return;//*/ |
| 2217 | /*extern bool doGPUDis; |
| 2218 | if (offset == 0x120216 && who == GPU) |
| 2219 | doGPUDis = true;//*/ |
| 2220 | /*extern uint32_t gpu_pc; |
| 2221 | if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) |
| 2222 | { |
| 2223 | uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); |
| 2224 | uint32_t y = base / 0x300; |
| 2225 | uint32_t x = (base - (y * 0x300)) / 2; |
| 2226 | WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); |
| 2227 | }//*/ |
| 2228 | /* |
| 2229 | JWW: Writing starfield star 775E at 0011F650 (555984/1447) |
| 2230 | */ |
| 2231 | //if (offset == (0x001E17F8 + 0x34)) |
| 2232 | /*if (who == GPU && offset == (0x001E17F8 + 0x34)) |
| 2233 | data = 0xFE3C;//*/ |
| 2234 | // WriteLog("JWW: Write at %08X written to by %s.\n", 0x001E17F8 + 0x34, whoName[who]);//*/ |
| 2235 | /*extern uint32_t gpu_pc; |
| 2236 | if (who == GPU && (gpu_pc == 0xF03604 || gpu_pc == 0xF03638)) |
| 2237 | { |
| 2238 | extern int objectPtr; |
| 2239 | // if (offset > 0x148000) |
| 2240 | // return; |
| 2241 | starCount++; |
| 2242 | if (starCount > objectPtr) |
| 2243 | return; |
| 2244 | |
| 2245 | // if (starCount == 1) |
| 2246 | // WriteLog("--> Drawing 1st star...\n"); |
| 2247 | // |
| 2248 | // uint32_t base = offset - (offset > 0x148000 ? 0x148000 : 0x100000); |
| 2249 | // uint32_t y = base / 0x300; |
| 2250 | // uint32_t x = (base - (y * 0x300)) / 2; |
| 2251 | // WriteLog("JWW: Writing starfield star %04X at %08X (%u/%u) [%s]\n", data, offset, x, y, (gpu_pc == 0xF03604 ? "s" : "L")); |
| 2252 | |
| 2253 | //A star of interest... |
| 2254 | //-->JWW: Writing starfield star 77C9 at 0011D31A (269/155) [s] |
| 2255 | //1st trail +3(x), -1(y) -> 272, 154 -> 0011D020 |
| 2256 | //JWW: Blitter writing echo 77B3 at 0011D022... |
| 2257 | }//*/ |
| 2258 | //extern bool doGPUDis; |
| 2259 | /*if (offset == 0x11D022 + 0x48000 || offset == 0x11D022)// && who == GPU) |
| 2260 | { |
| 2261 | // doGPUDis = true; |
| 2262 | WriteLog("JWW: %s writing echo %04X at %08X...\n", whoName[who], data, offset); |
| 2263 | // LogBlit(); |
| 2264 | } |
| 2265 | if (offset == 0x11D31A + 0x48000 || offset == 0x11D31A) |
| 2266 | WriteLog("JWW: %s writing star %04X at %08X...\n", whoName[who], data, offset);//*/ |
| 2267 | |
| 2268 | jaguarMainRAM[(offset+0) & (vjs.DRAM_size - 1)] = data >> 8; |
| 2269 | jaguarMainRAM[(offset+1) & (vjs.DRAM_size - 1)] = data & 0xFF; |
| 2270 | return; |
| 2271 | } |
| 2272 | else if (offset >= 0xDFFF00 && offset <= 0xDFFFFE) |
| 2273 | { |
| 2274 | CDROMWriteWord(offset, data, who); |
| 2275 | return; |
| 2276 | } |
| 2277 | else if (offset >= 0xF00000 && offset <= 0xF0FFFE) |
| 2278 | { |
| 2279 | TOMWriteWord(offset, data, who); |
| 2280 | return; |
| 2281 | } |
| 2282 | else if (offset >= 0xF10000 && offset <= 0xF1FFFE) |
| 2283 | { |
| 2284 | JERRYWriteWord(offset, data, who); |
| 2285 | return; |
| 2286 | } |
| 2287 | // Don't bomb on attempts to write to ROM |
| 2288 | else if (offset >= 0x800000 && offset <= 0xEFFFFF) |
| 2289 | return; |
| 2290 | |
| 2291 | jaguar_unknown_writeword(offset, data, who); |
| 2292 | } |
| 2293 | |
| 2294 | |
| 2295 | // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! |
| 2296 | uint32_t JaguarReadLong(uint32_t offset, uint32_t who/*=UNKNOWN*/) |
| 2297 | { |
| 2298 | return (JaguarReadWord(offset, who) << 16) | JaguarReadWord(offset+2, who); |
| 2299 | } |
| 2300 | |
| 2301 | |
| 2302 | // We really should re-do this so that it does *real* 32-bit access... !!! FIX !!! |
| 2303 | void JaguarWriteLong(uint32_t offset, uint32_t data, uint32_t who/*=UNKNOWN*/) |
| 2304 | { |
| 2305 | /* extern bool doDSPDis; |
| 2306 | if (offset < 0x400 && !doDSPDis) |
| 2307 | { |
| 2308 | WriteLog("JLW: Write to %08X by %s... Starting DSP log!\n\n", offset, whoName[who]); |
| 2309 | doDSPDis = true; |
| 2310 | }//*/ |
| 2311 | /*if (offset == 0x0100)//64*4) |
| 2312 | WriteLog("M68K: %s wrote dword to VI vector value %08X...\n", whoName[who], data);//*/ |
| 2313 | |
| 2314 | JaguarWriteWord(offset, data >> 16, who); |
| 2315 | JaguarWriteWord(offset+2, data & 0xFFFF, who); |
| 2316 | } |
| 2317 | |
| 2318 | |
| 2319 | void JaguarSetScreenBuffer(uint32_t * buffer) |
| 2320 | { |
| 2321 | // This is in TOM, but we set it here... |
| 2322 | screenBuffer = buffer; |
| 2323 | } |
| 2324 | |
| 2325 | |
| 2326 | void JaguarSetScreenPitch(uint32_t pitch) |
| 2327 | { |
| 2328 | // This is in TOM, but we set it here... |
| 2329 | screenPitch = pitch; |
| 2330 | } |
| 2331 | |
| 2332 | |
| 2333 | // |
| 2334 | // Jaguar console initialization |
| 2335 | // |
| 2336 | void JaguarInit(void) |
| 2337 | { |
| 2338 | // For randomizing RAM |
| 2339 | srand((unsigned int)time(NULL)); |
| 2340 | |
| 2341 | // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents |
| 2342 | for(uint32_t i=0; i<vjs.DRAM_size; i+=4) |
| 2343 | *((uint32_t *)(&jaguarMainRAM[i])) = rand(); |
| 2344 | |
| 2345 | #ifdef CPU_DEBUG_MEMORY |
| 2346 | memset(readMem, 0x00, 0x400000); |
| 2347 | memset(writeMemMin, 0xFF, 0x400000); |
| 2348 | memset(writeMemMax, 0x00, 0x400000); |
| 2349 | #endif |
| 2350 | // memset(jaguarMainRAM, 0x00, 0x200000); |
| 2351 | // memset(jaguar_mainRom, 0xFF, 0x200000); // & set it to all Fs... |
| 2352 | // memset(jaguar_mainRom, 0x00, 0x200000); // & set it to all 0s... |
| 2353 | //NOTE: This *doesn't* fix FlipOut... |
| 2354 | //Or does it? Hmm... |
| 2355 | //Seems to want $01010101... Dunno why. Investigate! |
| 2356 | // memset(jaguarMainROM, 0x01, 0x600000); // & set it to all 01s... |
| 2357 | // memset(jaguar_mainRom, 0xFF, 0x600000); // & set it to all Fs... |
| 2358 | lowerField = false; // Reset the lower field flag |
| 2359 | //temp, for crappy crap that sux |
| 2360 | memset(jaguarMainRAM + 0x804, 0xFF, 4); |
| 2361 | |
| 2362 | m68k_pulse_reset(); // Need to do this so UAE disasm doesn't segfault on exit |
| 2363 | GPUInit(); |
| 2364 | DSPInit(); |
| 2365 | TOMInit(); |
| 2366 | JERRYInit(); |
| 2367 | CDROMInit(); |
| 2368 | m68k_brk_init(); |
| 2369 | } |
| 2370 | |
| 2371 | |
| 2372 | //New timer based code stuffola... |
| 2373 | void HalflineCallback(void); |
| 2374 | void RenderCallback(void); |
| 2375 | void JaguarReset(void) |
| 2376 | { |
| 2377 | // Only problem with this approach: It wipes out RAM loaded files...! |
| 2378 | // Contents of local RAM are quasi-stable; we simulate this by randomizing RAM contents |
| 2379 | for (uint32_t i = 8; i < vjs.DRAM_size; i += 4) |
| 2380 | { |
| 2381 | *((uint32_t *)(&jaguarMainRAM[i])) = rand(); |
| 2382 | } |
| 2383 | |
| 2384 | // New timer base code stuffola... |
| 2385 | InitializeEventList(); |
| 2386 | //Need to change this so it uses the single RAM space and load the BIOS |
| 2387 | //into it somewhere... |
| 2388 | //Also, have to change this here and in JaguarReadXX() currently |
| 2389 | // Only use the system BIOS if it's available...! (it's always available now!) |
| 2390 | // AND only if a jaguar cartridge has been inserted. |
| 2391 | #ifndef NEWMODELSBIOSHANDLER |
| 2392 | if (vjs.useJaguarBIOS && jaguarCartInserted && !vjs.hardwareTypeAlpine && !vjs.softTypeDebugger) |
| 2393 | { |
| 2394 | memcpy(jaguarMainRAM, jagMemSpace + 0xE00000, 8); |
| 2395 | #else |
| 2396 | if (vjs.useJaguarBIOS && jaguarCartInserted) |
| 2397 | { |
| 2398 | SetBIOS(); |
| 2399 | #endif |
| 2400 | } |
| 2401 | else |
| 2402 | { |
| 2403 | SET32(jaguarMainRAM, 4, jaguarRunAddress); |
| 2404 | } |
| 2405 | |
| 2406 | // WriteLog("jaguar_reset():\n"); |
| 2407 | TOMReset(); |
| 2408 | JERRYReset(); |
| 2409 | GPUReset(); |
| 2410 | DSPReset(); |
| 2411 | CDROMReset(); |
| 2412 | m68k_pulse_reset(); // Reset the 68000 |
| 2413 | WriteLog("Jaguar: 68K reset. PC=%06X SP=%08X\n", m68k_get_reg(NULL, M68K_REG_PC), m68k_get_reg(NULL, M68K_REG_A7)); |
| 2414 | lowerField = false; // Reset the lower field flag |
| 2415 | // SetCallbackTime(ScanlineCallback, 63.5555); |
| 2416 | // SetCallbackTime(ScanlineCallback, 31.77775); |
| 2417 | SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); |
| 2418 | } |
| 2419 | |
| 2420 | |
| 2421 | void JaguarDone(void) |
| 2422 | { |
| 2423 | #ifdef CPU_DEBUG_MEMORY |
| 2424 | /* WriteLog("\nJaguar: Memory Usage Stats (return addresses)\n\n"); |
| 2425 | |
| 2426 | for(uint32_t i=0; i<=raPtr; i++) |
| 2427 | { |
| 2428 | WriteLog("\t%08X\n", returnAddr[i]); |
| 2429 | WriteLog("M68000 disassembly at $%08X...\n", returnAddr[i] - 16); |
| 2430 | jaguar_dasm(returnAddr[i] - 16, 16); |
| 2431 | WriteLog("\n"); |
| 2432 | } |
| 2433 | WriteLog("\n");//*/ |
| 2434 | |
| 2435 | /* int start = 0, end = 0; |
| 2436 | bool endTriggered = false, startTriggered = false; |
| 2437 | for(int i=0; i<0x400000; i++) |
| 2438 | { |
| 2439 | if (readMem[i] && writeMemMin[i] != 0xFF && writeMemMax != 0x00) |
| 2440 | { |
| 2441 | if (!startTriggered) |
| 2442 | startTriggered = true, endTriggered = false, start = i; |
| 2443 | |
| 2444 | WriteLog("\t\tMin/Max @ %06X: %u/%u\n", i, writeMemMin[i], writeMemMax[i]); |
| 2445 | } |
| 2446 | else |
| 2447 | { |
| 2448 | if (!endTriggered) |
| 2449 | { |
| 2450 | end = i - 1, endTriggered = true, startTriggered = false; |
| 2451 | WriteLog("\tMemory range accessed: %06X - %06X\n", start, end); |
| 2452 | } |
| 2453 | } |
| 2454 | } |
| 2455 | WriteLog("\n");//*/ |
| 2456 | #endif |
| 2457 | //#ifdef CPU_DEBUG |
| 2458 | // for(int i=M68K_REG_A0; i<=M68K_REG_A7; i++) |
| 2459 | // WriteLog("\tA%i = 0x%.8x\n", i-M68K_REG_A0, m68k_get_reg(NULL, (m68k_register_t)i)); |
| 2460 | int32_t topOfStack = m68k_get_reg(NULL, M68K_REG_A7); |
| 2461 | WriteLog("M68K: Top of stack: %08X -> (%08X). Stack trace:\n", topOfStack, JaguarReadLong(topOfStack)); |
| 2462 | #if 0 |
| 2463 | for(int i=-2; i<9; i++) |
| 2464 | WriteLog("%06X: %08X\n", topOfStack + (i * 4), JaguarReadLong(topOfStack + (i * 4))); |
| 2465 | #else |
| 2466 | uint32_t address = topOfStack - (4 * 4 * 3); |
| 2467 | |
| 2468 | for(int i=0; i<10; i++) |
| 2469 | { |
| 2470 | WriteLog("%06X:", address); |
| 2471 | |
| 2472 | for(int j=0; j<4; j++) |
| 2473 | { |
| 2474 | WriteLog(" %08X", JaguarReadLong(address)); |
| 2475 | address += 4; |
| 2476 | } |
| 2477 | |
| 2478 | WriteLog("\n"); |
| 2479 | } |
| 2480 | #endif |
| 2481 | |
| 2482 | /* WriteLog("\nM68000 disassembly at $802288...\n"); |
| 2483 | jaguar_dasm(0x802288, 3); |
| 2484 | WriteLog("\nM68000 disassembly at $802200...\n"); |
| 2485 | jaguar_dasm(0x802200, 500); |
| 2486 | WriteLog("\nM68000 disassembly at $802518...\n"); |
| 2487 | jaguar_dasm(0x802518, 100);//*/ |
| 2488 | |
| 2489 | /* WriteLog("\n\nM68000 disassembly at $803F00 (look @ $803F2A)...\n"); |
| 2490 | jaguar_dasm(0x803F00, 500); |
| 2491 | WriteLog("\n");//*/ |
| 2492 | |
| 2493 | /* WriteLog("\n\nM68000 disassembly at $802B00 (look @ $802B5E)...\n"); |
| 2494 | jaguar_dasm(0x802B00, 500); |
| 2495 | WriteLog("\n");//*/ |
| 2496 | |
| 2497 | /* WriteLog("\n\nM68000 disassembly at $809900 (look @ $8099F8)...\n"); |
| 2498 | jaguar_dasm(0x809900, 500); |
| 2499 | WriteLog("\n");//*/ |
| 2500 | //8099F8 |
| 2501 | /* WriteLog("\n\nDump of $8093C8:\n\n"); |
| 2502 | for(int i=0x8093C8; i<0x809900; i+=4) |
| 2503 | WriteLog("%06X: %08X\n", i, JaguarReadLong(i));//*/ |
| 2504 | /* WriteLog("\n\nM68000 disassembly at $90006C...\n"); |
| 2505 | jaguar_dasm(0x90006C, 500); |
| 2506 | WriteLog("\n");//*/ |
| 2507 | /* WriteLog("\n\nM68000 disassembly at $1AC000...\n"); |
| 2508 | jaguar_dasm(0x1AC000, 6000); |
| 2509 | WriteLog("\n");//*/ |
| 2510 | |
| 2511 | // WriteLog("Jaguar: CD BIOS version %04X\n", JaguarReadWord(0x3004)); |
| 2512 | WriteLog("Jaguar: Interrupt enable = $%02X\n", TOMReadByte(0xF000E1, JAGUAR) & 0x1F); |
| 2513 | WriteLog("Jaguar: Video interrupt is %s (line=%u)\n", ((TOMIRQEnabled(IRQ_VIDEO)) |
| 2514 | && (JaguarInterruptHandlerIsValid(64))) ? "enabled" : "disabled", TOMReadWord(0xF0004E, JAGUAR)); |
| 2515 | M68K_show_context(); |
| 2516 | //#endif |
| 2517 | |
| 2518 | CDROMDone(); |
| 2519 | GPUDone(); |
| 2520 | DSPDone(); |
| 2521 | TOMDone(); |
| 2522 | JERRYDone(); |
| 2523 | m68k_brk_close(); |
| 2524 | |
| 2525 | // temp, until debugger is in place |
| 2526 | //00802016: jsr $836F1A.l |
| 2527 | //0080201C: jsr $836B30.l |
| 2528 | //00802022: jsr $836B18.l |
| 2529 | //00802028: jsr $8135F0.l |
| 2530 | //00813C1E: jsr $813F76.l |
| 2531 | //00802038: jsr $836D00.l |
| 2532 | //00802098: jsr $8373A4.l |
| 2533 | //008020A2: jsr $83E24A.l |
| 2534 | //008020BA: jsr $83E156.l |
| 2535 | //008020C6: jsr $83E19C.l |
| 2536 | //008020E6: jsr $8445E8.l |
| 2537 | //008020EC: jsr $838C20.l |
| 2538 | //0080211A: jsr $838ED6.l |
| 2539 | //00802124: jsr $89CA56.l |
| 2540 | //0080212A: jsr $802B48.l |
| 2541 | #if 0 |
| 2542 | WriteLog("-------------------------------------------\n"); |
| 2543 | JaguarDasm(0x8445E8, 0x200); |
| 2544 | WriteLog("-------------------------------------------\n"); |
| 2545 | JaguarDasm(0x838C20, 0x200); |
| 2546 | WriteLog("-------------------------------------------\n"); |
| 2547 | JaguarDasm(0x838ED6, 0x200); |
| 2548 | WriteLog("-------------------------------------------\n"); |
| 2549 | JaguarDasm(0x89CA56, 0x200); |
| 2550 | WriteLog("-------------------------------------------\n"); |
| 2551 | JaguarDasm(0x802B48, 0x200); |
| 2552 | WriteLog("\n\nM68000 disassembly at $802000...\n"); |
| 2553 | JaguarDasm(0x802000, 6000); |
| 2554 | WriteLog("\n");//*/ |
| 2555 | #endif |
| 2556 | /* WriteLog("\n\nM68000 disassembly at $6004...\n"); |
| 2557 | JaguarDasm(0x6004, 10000); |
| 2558 | WriteLog("\n");//*/ |
| 2559 | // WriteLog("\n\nM68000 disassembly at $802000...\n"); |
| 2560 | // JaguarDasm(0x802000, 0x1000); |
| 2561 | // WriteLog("\n\nM68000 disassembly at $4100...\n"); |
| 2562 | // JaguarDasm(0x4100, 200); |
| 2563 | // WriteLog("\n\nM68000 disassembly at $800800...\n"); |
| 2564 | // JaguarDasm(0x800800, 0x1000); |
| 2565 | } |
| 2566 | |
| 2567 | |
| 2568 | // Temp debugging stuff |
| 2569 | |
| 2570 | void DumpMainMemory(void) |
| 2571 | { |
| 2572 | FILE * fp = fopen("./memdump.bin", "wb"); |
| 2573 | |
| 2574 | if (fp == NULL) |
| 2575 | return; |
| 2576 | |
| 2577 | fwrite(jaguarMainRAM, 1, vjs.DRAM_size, fp); |
| 2578 | fclose(fp); |
| 2579 | } |
| 2580 | |
| 2581 | |
| 2582 | uint8_t * GetRamPtr(void) |
| 2583 | { |
| 2584 | return jaguarMainRAM; |
| 2585 | } |
| 2586 | |
| 2587 | |
| 2588 | // |
| 2589 | // New Jaguar execution stack |
| 2590 | // This executes 1 frame's worth of code. |
| 2591 | // |
| 2592 | void JaguarExecuteNew(void) |
| 2593 | { |
| 2594 | frameDone = false; |
| 2595 | |
| 2596 | do |
| 2597 | { |
| 2598 | double timeToNextEvent = GetTimeToNextEvent(); |
| 2599 | //WriteLog("JEN: Time to next event (%u) is %f usec (%u RISC cycles)...\n", nextEvent, timeToNextEvent, USEC_TO_RISC_CYCLES(timeToNextEvent)); |
| 2600 | |
| 2601 | m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent)); |
| 2602 | |
| 2603 | if (vjs.GPUEnabled) |
| 2604 | GPUExec(USEC_TO_RISC_CYCLES(timeToNextEvent)); |
| 2605 | |
| 2606 | HandleNextEvent(); |
| 2607 | } |
| 2608 | while (!frameDone); |
| 2609 | } |
| 2610 | |
| 2611 | |
| 2612 | // Step over function |
| 2613 | int JaguarStepOver(int depth) |
| 2614 | { |
| 2615 | bool exit = !depth; |
| 2616 | int cycles = 0; |
| 2617 | //bool case55 = false; |
| 2618 | //uint32_t m68kSR; |
| 2619 | |
| 2620 | // if (!depth) |
| 2621 | // { |
| 2622 | // cycles = 0; |
| 2623 | // exit = true; |
| 2624 | // } |
| 2625 | // else |
| 2626 | // { |
| 2627 | // exit = false; |
| 2628 | // } |
| 2629 | |
| 2630 | do |
| 2631 | { |
| 2632 | cycles += JaguarStepInto(); |
| 2633 | |
| 2634 | switch (M68KGetCurrentOpcodeFamily()) |
| 2635 | { |
| 2636 | // rts |
| 2637 | case 49: |
| 2638 | //if (depth) |
| 2639 | { |
| 2640 | //if (!--depth) |
| 2641 | { |
| 2642 | exit = true; |
| 2643 | } |
| 2644 | //exit = false; |
| 2645 | } |
| 2646 | break; |
| 2647 | |
| 2648 | #if 0 |
| 2649 | // bcc |
| 2650 | case 55: |
| 2651 | if (!depth) |
| 2652 | { |
| 2653 | //m68kSR = m68k_get_reg(NULL, M68K_REG_SR); |
| 2654 | if (m68k_get_reg(NULL, M68K_REG_SR) & 0x4) |
| 2655 | { |
| 2656 | exit = true; |
| 2657 | } |
| 2658 | else |
| 2659 | { |
| 2660 | exit = false; |
| 2661 | } |
| 2662 | } |
| 2663 | break; |
| 2664 | #endif |
| 2665 | |
| 2666 | // bsr & jsr |
| 2667 | case 54: |
| 2668 | case 52: |
| 2669 | cycles += JaguarStepOver(depth+1); |
| 2670 | //if (depth) |
| 2671 | //{ |
| 2672 | // exit = false; |
| 2673 | //} |
| 2674 | break; |
| 2675 | |
| 2676 | default: |
| 2677 | //if (case55) |
| 2678 | //{ |
| 2679 | // exit = true; |
| 2680 | //} |
| 2681 | break; |
| 2682 | } |
| 2683 | } |
| 2684 | while (!exit && !M68KDebugHaltStatus()); |
| 2685 | |
| 2686 | #ifdef _MSC_VER |
| 2687 | #pragma message("Warning: !!! Need to verify the Jaguar Step Over function !!!") |
| 2688 | #else |
| 2689 | #warning "!!! Need to verify the Jaguar Step Over function !!!" |
| 2690 | #endif // _MSC_VER |
| 2691 | return cycles; |
| 2692 | } |
| 2693 | |
| 2694 | |
| 2695 | // Step into function |
| 2696 | int JaguarStepInto(void) |
| 2697 | { |
| 2698 | int cycles; |
| 2699 | // double timeToNextEvent = GetTimeToNextEvent(); |
| 2700 | |
| 2701 | cycles = m68k_execute(USEC_TO_M68K_CYCLES(0)); |
| 2702 | // m68k_execute(USEC_TO_M68K_CYCLES(timeToNextEvent)); |
| 2703 | |
| 2704 | if (vjs.GPUEnabled) |
| 2705 | GPUExec(USEC_TO_RISC_CYCLES(0)); |
| 2706 | |
| 2707 | // HandleNextEvent(); |
| 2708 | #ifdef _MSC_VER |
| 2709 | #pragma message("Warning: !!! Need to verify the Jaguar Step Into function !!!") |
| 2710 | #else |
| 2711 | #warning "!!! Need to verify the Jaguar Step Into function !!!" |
| 2712 | #endif // _MSC_VER |
| 2713 | return cycles; |
| 2714 | } |
| 2715 | |
| 2716 | |
| 2717 | // |
| 2718 | // The thing to keep in mind is that the VC is advanced every HALF line, |
| 2719 | // regardless of whether the display is interlaced or not. The only difference |
| 2720 | // with an interlaced display is that the high bit of VC will be set when the |
| 2721 | // lower field is being rendered. (NB: The high bit of VC is ALWAYS set on the |
| 2722 | // lower field, regardless of whether it's in interlace mode or not. |
| 2723 | // NB2: Seems it doesn't always, not sure what the constraint is...) |
| 2724 | // |
| 2725 | // Normally, TVs will render a full frame in 1/30s (NTSC) or 1/25s (PAL) by |
| 2726 | // rendering two fields that are slighty vertically offset from each other. |
| 2727 | // Each field is created in 1/60s (NTSC) or 1/50s (PAL), and every other line |
| 2728 | // is rendered in this mode so that each field, when overlaid on each other, |
| 2729 | // will yield the final picture at the full resolution for the full frame. |
| 2730 | // |
| 2731 | // We execute a half frame in each timeslice (1/60s NTSC, 1/50s PAL). |
| 2732 | // Since the number of lines in a FULL frame is 525 for NTSC, 625 for PAL, |
| 2733 | // it will be half this number for a half frame. BUT, since we're counting |
| 2734 | // HALF lines, we double this number and we're back at 525 for NTSC, 625 for |
| 2735 | // PAL. |
| 2736 | // |
| 2737 | // Scanline times are 63.5555... μs in NTSC and 64 μs in PAL |
| 2738 | // Half line times are, naturally, half of this. :-P |
| 2739 | // |
| 2740 | void HalflineCallback(void) |
| 2741 | { |
| 2742 | uint16_t vc = TOMReadWord(0xF00006, JAGUAR); |
| 2743 | uint16_t vp = TOMReadWord(0xF0003E, JAGUAR) + 1; |
| 2744 | uint16_t vi = TOMReadWord(0xF0004E, JAGUAR); |
| 2745 | // uint16_t vbb = TOMReadWord(0xF00040, JAGUAR); |
| 2746 | vc++; |
| 2747 | |
| 2748 | // Each # of lines is for a full frame == 1/30s (NTSC), 1/25s (PAL). |
| 2749 | // So we cut the number of half-lines in a frame in half. :-P |
| 2750 | uint16_t numHalfLines = ((vjs.hardwareTypeNTSC ? 525 : 625) * 2) / 2; |
| 2751 | |
| 2752 | if ((vc & 0x7FF) >= numHalfLines) |
| 2753 | { |
| 2754 | lowerField = !lowerField; |
| 2755 | // If we're rendering the lower field, set the high bit (#11, counting |
| 2756 | // from 0) of VC |
| 2757 | vc = (lowerField ? 0x0800 : 0x0000); |
| 2758 | } |
| 2759 | |
| 2760 | //WriteLog("HLC: Currently on line %u (VP=%u)...\n", vc, vp); |
| 2761 | TOMWriteWord(0xF00006, vc, JAGUAR); |
| 2762 | |
| 2763 | // Time for Vertical Interrupt? |
| 2764 | if ((vc & 0x7FF) == vi && (vc & 0x7FF) > 0 && TOMIRQEnabled(IRQ_VIDEO)) |
| 2765 | { |
| 2766 | // We don't have to worry about autovectors & whatnot because the Jaguar |
| 2767 | // tells you through its HW registers who sent the interrupt... |
| 2768 | TOMSetPendingVideoInt(); |
| 2769 | m68k_set_irq(2); |
| 2770 | } |
| 2771 | |
| 2772 | TOMExecHalfline(vc, true); |
| 2773 | |
| 2774 | //Change this to VBB??? |
| 2775 | //Doesn't seem to matter (at least for Flip Out & I-War) |
| 2776 | if ((vc & 0x7FF) == 0) |
| 2777 | // if (vc == vbb) |
| 2778 | { |
| 2779 | JoystickExec(); |
| 2780 | frameDone = true; |
| 2781 | }//*/ |
| 2782 | |
| 2783 | SetCallbackTime(HalflineCallback, (vjs.hardwareTypeNTSC ? 31.777777777 : 32.0)); |
| 2784 | } |
| 2785 | |