| 1 | // This is part of Pico Library\r |
| 2 | \r |
| 3 | // (c) Copyright 2004 Dave, All rights reserved.\r |
| 4 | // (c) Copyright 2006 notaz, All rights reserved.\r |
| 5 | // Free for non-commercial use.\r |
| 6 | \r |
| 7 | // For commercial use, separate licencing terms must be obtained.\r |
| 8 | \r |
| 9 | \r |
| 10 | #include "PicoInt.h"\r |
| 11 | #include "sound/ym2612.h"\r |
| 12 | \r |
| 13 | int PicoVer=0x0133;\r |
| 14 | struct Pico Pico;\r |
| 15 | int PicoOpt=0; // disable everything by default\r |
| 16 | int PicoSkipFrame=0; // skip rendering frame?\r |
| 17 | int PicoRegionOverride = 0; // override the region detection 0: Auto, 1: Japan NTSC, 2: Japan PAL, 4: US, 8: Europe\r |
| 18 | int PicoAutoRgnOrder = 0;\r |
| 19 | int emustatus = 0; // rapid_ym2612, multi_ym_updates\r |
| 20 | void (*PicoWriteSound)(int len) = NULL; // called at the best time to send sound buffer (PsndOut) to hardware\r |
| 21 | void (*PicoResetHook)(void) = NULL;\r |
| 22 | void (*PicoLineHook)(int count) = NULL;\r |
| 23 | \r |
| 24 | struct PicoSRAM SRam = {0,};\r |
| 25 | int z80startCycle, z80stopCycle; // in 68k cycles\r |
| 26 | int PicoPad[2]; // Joypads, format is SACB RLDU\r |
| 27 | int PicoMCD = 0; // mega CD status: scd_started\r |
| 28 | \r |
| 29 | // to be called once on emu init\r |
| 30 | int PicoInit(void)\r |
| 31 | {\r |
| 32 | // Blank space for state:\r |
| 33 | memset(&Pico,0,sizeof(Pico));\r |
| 34 | memset(&PicoPad,0,sizeof(PicoPad));\r |
| 35 | \r |
| 36 | // Init CPUs:\r |
| 37 | SekInit();\r |
| 38 | z80_init(); // init even if we aren't going to use it\r |
| 39 | \r |
| 40 | PicoInitMCD();\r |
| 41 | PicoSVPInit();\r |
| 42 | \r |
| 43 | SRam.data=0;\r |
| 44 | \r |
| 45 | return 0;\r |
| 46 | }\r |
| 47 | \r |
| 48 | // to be called once on emu exit\r |
| 49 | void PicoExit(void)\r |
| 50 | {\r |
| 51 | if (PicoMCD&1)\r |
| 52 | PicoExitMCD();\r |
| 53 | z80_exit();\r |
| 54 | \r |
| 55 | if (SRam.data) free(SRam.data); SRam.data=0;\r |
| 56 | }\r |
| 57 | \r |
| 58 | void PicoPower(void)\r |
| 59 | {\r |
| 60 | // clear all memory of the emulated machine\r |
| 61 | memset(&Pico.ram,0,(unsigned int)&Pico.rom-(unsigned int)&Pico.ram);\r |
| 62 | \r |
| 63 | memset(&Pico.video,0,sizeof(Pico.video));\r |
| 64 | memset(&Pico.m,0,sizeof(Pico.m));\r |
| 65 | \r |
| 66 | Pico.video.pending_ints=0;\r |
| 67 | z80_reset();\r |
| 68 | \r |
| 69 | // default VDP register values (based on Fusion)\r |
| 70 | Pico.video.reg[0] = Pico.video.reg[1] = 0x04;\r |
| 71 | Pico.video.reg[0xc] = 0x81;\r |
| 72 | Pico.video.reg[0xf] = 0x02;\r |
| 73 | \r |
| 74 | if (PicoMCD & 1)\r |
| 75 | PicoPowerMCD();\r |
| 76 | \r |
| 77 | PicoReset();\r |
| 78 | }\r |
| 79 | \r |
| 80 | int PicoReset(void)\r |
| 81 | {\r |
| 82 | unsigned int region=0;\r |
| 83 | int support=0,hw=0,i=0;\r |
| 84 | unsigned char pal=0;\r |
| 85 | unsigned char sram_reg=Pico.m.sram_reg; // must be preserved\r |
| 86 | \r |
| 87 | if (Pico.romsize<=0) return 1;\r |
| 88 | \r |
| 89 | /* must call now, so that banking is reset, and correct vectors get fetched */\r |
| 90 | if (PicoResetHook) PicoResetHook();\r |
| 91 | \r |
| 92 | PicoMemReset();\r |
| 93 | SekReset();\r |
| 94 | // s68k doesn't have the TAS quirk, so we just globally set normal TAS handler in MCD mode (used by Batman games).\r |
| 95 | SekSetRealTAS(PicoMCD & 1);\r |
| 96 | SekCycleCntT=0;\r |
| 97 | \r |
| 98 | if (PicoMCD & 1)\r |
| 99 | // needed for MCD to reset properly, probably some bug hides behind this..\r |
| 100 | memset(Pico.ioports,0,sizeof(Pico.ioports));\r |
| 101 | emustatus = 0;\r |
| 102 | \r |
| 103 | Pico.m.dirtyPal = 1;\r |
| 104 | \r |
| 105 | if(PicoRegionOverride)\r |
| 106 | {\r |
| 107 | support = PicoRegionOverride;\r |
| 108 | }\r |
| 109 | else\r |
| 110 | {\r |
| 111 | // Read cartridge region data:\r |
| 112 | region=PicoRead32(0x1f0);\r |
| 113 | \r |
| 114 | for (i=0;i<4;i++)\r |
| 115 | {\r |
| 116 | int c=0;\r |
| 117 | \r |
| 118 | c=region>>(i<<3); c&=0xff;\r |
| 119 | if (c<=' ') continue;\r |
| 120 | \r |
| 121 | if (c=='J') support|=1;\r |
| 122 | else if (c=='U') support|=4;\r |
| 123 | else if (c=='E') support|=8;\r |
| 124 | else if (c=='j') {support|=1; break; }\r |
| 125 | else if (c=='u') {support|=4; break; }\r |
| 126 | else if (c=='e') {support|=8; break; }\r |
| 127 | else\r |
| 128 | {\r |
| 129 | // New style code:\r |
| 130 | char s[2]={0,0};\r |
| 131 | s[0]=(char)c;\r |
| 132 | support|=strtol(s,NULL,16);\r |
| 133 | }\r |
| 134 | }\r |
| 135 | }\r |
| 136 | \r |
| 137 | // auto detection order override\r |
| 138 | if (PicoAutoRgnOrder) {\r |
| 139 | if (((PicoAutoRgnOrder>>0)&0xf) & support) support = (PicoAutoRgnOrder>>0)&0xf;\r |
| 140 | else if (((PicoAutoRgnOrder>>4)&0xf) & support) support = (PicoAutoRgnOrder>>4)&0xf;\r |
| 141 | else if (((PicoAutoRgnOrder>>8)&0xf) & support) support = (PicoAutoRgnOrder>>8)&0xf;\r |
| 142 | }\r |
| 143 | \r |
| 144 | // Try to pick the best hardware value for English/50hz:\r |
| 145 | if (support&8) { hw=0xc0; pal=1; } // Europe\r |
| 146 | else if (support&4) hw=0x80; // USA\r |
| 147 | else if (support&2) { hw=0x40; pal=1; } // Japan PAL\r |
| 148 | else if (support&1) hw=0x00; // Japan NTSC\r |
| 149 | else hw=0x80; // USA\r |
| 150 | \r |
| 151 | Pico.m.hardware=(unsigned char)(hw|0x20); // No disk attached\r |
| 152 | Pico.m.pal=pal;\r |
| 153 | Pico.video.status = 0x3408 | pal; // 'always set' bits | vblank | pal\r |
| 154 | \r |
| 155 | PsndReset(); // pal must be known here\r |
| 156 | \r |
| 157 | // create an empty "dma" to cause 68k exec start at random frame location\r |
| 158 | if (Pico.m.dma_xfers == 0 && !(PicoOpt&0x10000))\r |
| 159 | Pico.m.dma_xfers = rand() & 0x1fff;\r |
| 160 | \r |
| 161 | if (PicoMCD & 1) {\r |
| 162 | PicoResetMCD();\r |
| 163 | return 0;\r |
| 164 | }\r |
| 165 | \r |
| 166 | // reset sram state; enable sram access by default if it doesn't overlap with ROM\r |
| 167 | Pico.m.sram_reg=sram_reg&0x14;\r |
| 168 | if (!(Pico.m.sram_reg&4) && Pico.romsize <= SRam.start) Pico.m.sram_reg |= 1;\r |
| 169 | \r |
| 170 | elprintf(EL_STATUS, "sram: det: %i; eeprom: %i; start: %06x; end: %06x",\r |
| 171 | (Pico.m.sram_reg>>4)&1, (Pico.m.sram_reg>>2)&1, SRam.start, SRam.end);\r |
| 172 | \r |
| 173 | return 0;\r |
| 174 | }\r |
| 175 | \r |
| 176 | \r |
| 177 | // dma2vram settings are just hacks to unglitch Legend of Galahad (needs <= 104 to work)\r |
| 178 | // same for Outrunners (92-121, when active is set to 24)\r |
| 179 | // 96 is VR hack\r |
| 180 | static const int dma_timings[] = {\r |
| 181 | 96, 167, 166, 83, // vblank: 32cell: dma2vram dma2[vs|c]ram vram_fill vram_copy\r |
| 182 | 102, 205, 204, 102, // vblank: 40cell:\r |
| 183 | 16, 16, 15, 8, // active: 32cell:\r |
| 184 | 24, 18, 17, 9 // ...\r |
| 185 | };\r |
| 186 | \r |
| 187 | static const int dma_bsycles[] = {\r |
| 188 | (488<<8)/96, (488<<8)/167, (488<<8)/166, (488<<8)/83,\r |
| 189 | (488<<8)/102, (488<<8)/205, (488<<8)/204, (488<<8)/102,\r |
| 190 | (488<<8)/16, (488<<8)/16, (488<<8)/15, (488<<8)/8,\r |
| 191 | (488<<8)/24, (488<<8)/18, (488<<8)/17, (488<<8)/9\r |
| 192 | };\r |
| 193 | \r |
| 194 | PICO_INTERNAL int CheckDMA(void)\r |
| 195 | {\r |
| 196 | int burn = 0, xfers_can, dma_op = Pico.video.reg[0x17]>>6; // see gens for 00 and 01 modes\r |
| 197 | int xfers = Pico.m.dma_xfers;\r |
| 198 | int dma_op1;\r |
| 199 | \r |
| 200 | if(!(dma_op&2)) dma_op = (Pico.video.type==1) ? 0 : 1; // setting dma_timings offset here according to Gens\r |
| 201 | dma_op1 = dma_op;\r |
| 202 | if(Pico.video.reg[12] & 1) dma_op |= 4; // 40 cell mode?\r |
| 203 | if(!(Pico.video.status&8)&&(Pico.video.reg[1]&0x40)) dma_op|=8; // active display?\r |
| 204 | xfers_can = dma_timings[dma_op];\r |
| 205 | if(xfers <= xfers_can) {\r |
| 206 | if(dma_op&2) Pico.video.status&=~2; // dma no longer busy\r |
| 207 | else {\r |
| 208 | burn = xfers * dma_bsycles[dma_op] >> 8; // have to be approximate because can't afford division..\r |
| 209 | }\r |
| 210 | Pico.m.dma_xfers = 0;\r |
| 211 | } else {\r |
| 212 | if(!(dma_op&2)) burn = 488;\r |
| 213 | Pico.m.dma_xfers -= xfers_can;\r |
| 214 | }\r |
| 215 | \r |
| 216 | elprintf(EL_VDPDMA, "~Dma %i op=%i can=%i burn=%i [%i]", Pico.m.dma_xfers, dma_op1, xfers_can, burn, SekCyclesDone());\r |
| 217 | //dprintf("~aim: %i, cnt: %i", SekCycleAim, SekCycleCnt);\r |
| 218 | return burn;\r |
| 219 | }\r |
| 220 | \r |
| 221 | static __inline void SekRunM68k(int cyc)\r |
| 222 | {\r |
| 223 | int cyc_do;\r |
| 224 | SekCycleAim+=cyc;\r |
| 225 | if((cyc_do=SekCycleAim-SekCycleCnt) <= 0) return;\r |
| 226 | #if defined(EMU_CORE_DEBUG)\r |
| 227 | // this means we do run-compare\r |
| 228 | SekCycleCnt+=CM_compareRun(cyc_do, 0);\r |
| 229 | #elif defined(EMU_C68K)\r |
| 230 | PicoCpuCM68k.cycles=cyc_do;\r |
| 231 | CycloneRun(&PicoCpuCM68k);\r |
| 232 | SekCycleCnt+=cyc_do-PicoCpuCM68k.cycles;\r |
| 233 | #elif defined(EMU_M68K)\r |
| 234 | SekCycleCnt+=m68k_execute(cyc_do);\r |
| 235 | #elif defined(EMU_F68K)\r |
| 236 | SekCycleCnt+=fm68k_emulate(cyc_do+1, 0);\r |
| 237 | #endif\r |
| 238 | }\r |
| 239 | \r |
| 240 | static __inline void SekStep(void)\r |
| 241 | {\r |
| 242 | // this is required for timing sensitive stuff to work\r |
| 243 | int realaim=SekCycleAim; SekCycleAim=SekCycleCnt+1;\r |
| 244 | #if defined(EMU_CORE_DEBUG)\r |
| 245 | SekCycleCnt+=CM_compareRun(1, 0);\r |
| 246 | #elif defined(EMU_C68K)\r |
| 247 | PicoCpuCM68k.cycles=1;\r |
| 248 | CycloneRun(&PicoCpuCM68k);\r |
| 249 | SekCycleCnt+=1-PicoCpuCM68k.cycles;\r |
| 250 | #elif defined(EMU_M68K)\r |
| 251 | SekCycleCnt+=m68k_execute(1);\r |
| 252 | #elif defined(EMU_F68K)\r |
| 253 | SekCycleCnt+=fm68k_emulate(1, 0);\r |
| 254 | #endif\r |
| 255 | SekCycleAim=realaim;\r |
| 256 | }\r |
| 257 | \r |
| 258 | static int CheckIdle(void)\r |
| 259 | {\r |
| 260 | int i, state[0x24];\r |
| 261 | \r |
| 262 | // See if the state is the same after 2 steps:\r |
| 263 | SekState(state); SekStep(); SekStep(); SekState(state+0x12);\r |
| 264 | for (i = 0x11; i >= 0; i--)\r |
| 265 | if (state[i] != state[i+0x12]) return 0;\r |
| 266 | \r |
| 267 | return 1;\r |
| 268 | }\r |
| 269 | \r |
| 270 | \r |
| 271 | // to be called on 224 or line_sample scanlines only\r |
| 272 | static __inline void getSamples(int y)\r |
| 273 | {\r |
| 274 | #if SIMPLE_WRITE_SOUND\r |
| 275 | if (y != 224) return;\r |
| 276 | PsndRender(0, PsndLen);\r |
| 277 | if (PicoWriteSound) PicoWriteSound(PsndLen);\r |
| 278 | PsndClear();\r |
| 279 | #else\r |
| 280 | static int curr_pos = 0;\r |
| 281 | \r |
| 282 | if(y == 224) {\r |
| 283 | if(emustatus & 2)\r |
| 284 | curr_pos += PsndRender(curr_pos, PsndLen-PsndLen/2);\r |
| 285 | else curr_pos = PsndRender(0, PsndLen);\r |
| 286 | if (emustatus&1) emustatus|=2; else emustatus&=~2;\r |
| 287 | if (PicoWriteSound) PicoWriteSound(curr_pos);\r |
| 288 | // clear sound buffer\r |
| 289 | PsndClear();\r |
| 290 | }\r |
| 291 | else if(emustatus & 3) {\r |
| 292 | emustatus|= 2;\r |
| 293 | emustatus&=~1;\r |
| 294 | curr_pos = PsndRender(0, PsndLen/2);\r |
| 295 | }\r |
| 296 | #endif\r |
| 297 | }\r |
| 298 | \r |
| 299 | \r |
| 300 | #include "PicoFrameHints.c"\r |
| 301 | \r |
| 302 | // helper z80 runner. Runs only if z80 is enabled at this point\r |
| 303 | // (z80WriteBusReq will handle the rest)\r |
| 304 | static void PicoRunZ80Simple(int line_from, int line_to)\r |
| 305 | {\r |
| 306 | int line_from_r=line_from, line_to_r=line_to, line=0;\r |
| 307 | int line_sample = Pico.m.pal ? 68 : 93;\r |
| 308 | \r |
| 309 | if (!(PicoOpt&4) || Pico.m.z80Run == 0) line_to_r = 0;\r |
| 310 | else {\r |
| 311 | extern const unsigned short vcounts[];\r |
| 312 | if (z80startCycle) {\r |
| 313 | line = vcounts[z80startCycle>>8];\r |
| 314 | if (line > line_from)\r |
| 315 | line_from_r = line;\r |
| 316 | }\r |
| 317 | z80startCycle = SekCyclesDone();\r |
| 318 | }\r |
| 319 | \r |
| 320 | if (PicoOpt&1) {\r |
| 321 | // we have ym2612 enabled, so we have to run Z80 in lines, so we could update DAC and timers\r |
| 322 | for (line = line_from; line < line_to; line++) {\r |
| 323 | Psnd_timers_and_dac(line);\r |
| 324 | if ((line == 224 || line == line_sample) && PsndOut) getSamples(line);\r |
| 325 | if (line == 32 && PsndOut) emustatus &= ~1;\r |
| 326 | if (line >= line_from_r && line < line_to_r)\r |
| 327 | z80_run_nr(228);\r |
| 328 | }\r |
| 329 | } else if (line_to_r-line_from_r > 0) {\r |
| 330 | z80_run_nr(228*(line_to_r-line_from_r));\r |
| 331 | // samples will be taken by caller\r |
| 332 | }\r |
| 333 | }\r |
| 334 | \r |
| 335 | // Simple frame without H-Ints\r |
| 336 | static int PicoFrameSimple(void)\r |
| 337 | {\r |
| 338 | struct PicoVideo *pv=&Pico.video;\r |
| 339 | int y=0,line=0,lines=0,lines_step=0,sects;\r |
| 340 | int cycles_68k_vblock,cycles_68k_block;\r |
| 341 | \r |
| 342 | // split to 16 run calls for active scan, for vblank split to 2 (ntsc), 3 (pal 240), 4 (pal 224)\r |
| 343 | if (Pico.m.pal && (pv->reg[1]&8)) {\r |
| 344 | if(pv->reg[1]&8) { // 240 lines\r |
| 345 | cycles_68k_block = 7329; // (488*240+148)/16.0, -4\r |
| 346 | cycles_68k_vblock = 11640; // (72*488-148-68)/3.0, 0\r |
| 347 | lines_step = 15;\r |
| 348 | } else {\r |
| 349 | cycles_68k_block = 6841; // (488*224+148)/16.0, -4\r |
| 350 | cycles_68k_vblock = 10682; // (88*488-148-68)/4.0, 0\r |
| 351 | lines_step = 14;\r |
| 352 | }\r |
| 353 | } else {\r |
| 354 | // M68k cycles/frame: 127840.71\r |
| 355 | cycles_68k_block = 6841; // (488*224+148)/16.0, -4\r |
| 356 | cycles_68k_vblock = 9164; // (38*488-148-68)/2.0, 0\r |
| 357 | lines_step = 14;\r |
| 358 | }\r |
| 359 | \r |
| 360 | // a hack for VR, to get it running in fast mode\r |
| 361 | if (PicoRead16Hook == PicoSVPRead16)\r |
| 362 | Pico.ram[0xd864^1] = 0x1a;\r |
| 363 | \r |
| 364 | // we don't emulate DMA timing in this mode\r |
| 365 | if (Pico.m.dma_xfers) {\r |
| 366 | Pico.m.dma_xfers=0;\r |
| 367 | Pico.video.status&=~2;\r |
| 368 | }\r |
| 369 | \r |
| 370 | // VDP FIFO too\r |
| 371 | pv->lwrite_cnt = 0;\r |
| 372 | Pico.video.status|=0x200;\r |
| 373 | \r |
| 374 | Pico.m.scanline=-1;\r |
| 375 | z80startCycle=0;\r |
| 376 | \r |
| 377 | SekCyclesReset();\r |
| 378 | \r |
| 379 | // 6 button pad: let's just say it timed out now\r |
| 380 | Pico.m.padTHPhase[0]=Pico.m.padTHPhase[1]=0;\r |
| 381 | \r |
| 382 | // ---- Active Scan ----\r |
| 383 | pv->status&=~0x88; // clear V-Int, come out of vblank\r |
| 384 | \r |
| 385 | // Run in sections:\r |
| 386 | for(sects=16; sects; sects--)\r |
| 387 | {\r |
| 388 | if (CheckIdle()) break;\r |
| 389 | \r |
| 390 | lines += lines_step;\r |
| 391 | SekRunM68k(cycles_68k_block);\r |
| 392 | \r |
| 393 | PicoRunZ80Simple(line, lines);\r |
| 394 | if (PicoLineHook) PicoLineHook(lines_step);\r |
| 395 | line=lines;\r |
| 396 | }\r |
| 397 | \r |
| 398 | // run Z80 for remaining sections\r |
| 399 | if(sects) {\r |
| 400 | int c = sects*cycles_68k_block;\r |
| 401 | \r |
| 402 | // this "run" is for approriate line counter, etc\r |
| 403 | SekCycleCnt += c;\r |
| 404 | SekCycleAim += c;\r |
| 405 | \r |
| 406 | lines += sects*lines_step;\r |
| 407 | PicoRunZ80Simple(line, lines);\r |
| 408 | if (PicoLineHook) PicoLineHook(sects*lines_step);\r |
| 409 | }\r |
| 410 | \r |
| 411 | // another hack for VR (it needs hints to work)\r |
| 412 | if (PicoRead16Hook == PicoSVPRead16) {\r |
| 413 | Pico.ram[0xd864^1] = 1;\r |
| 414 | pv->pending_ints|=0x10;\r |
| 415 | if (pv->reg[0]&0x10) SekInterrupt(4);\r |
| 416 | SekRunM68k(160);\r |
| 417 | }\r |
| 418 | \r |
| 419 | // render screen\r |
| 420 | if (!PicoSkipFrame)\r |
| 421 | {\r |
| 422 | if (!(PicoOpt&0x10))\r |
| 423 | {\r |
| 424 | // Draw the screen\r |
| 425 | #if CAN_HANDLE_240_LINES\r |
| 426 | if (pv->reg[1]&8) {\r |
| 427 | for (y=0;y<240;y++) PicoLine(y);\r |
| 428 | } else {\r |
| 429 | for (y=0;y<224;y++) PicoLine(y);\r |
| 430 | }\r |
| 431 | #else\r |
| 432 | for (y=0;y<224;y++) PicoLine(y);\r |
| 433 | #endif\r |
| 434 | }\r |
| 435 | else PicoFrameFull();\r |
| 436 | #ifdef DRAW_FINISH_FUNC\r |
| 437 | DRAW_FINISH_FUNC();\r |
| 438 | #endif\r |
| 439 | }\r |
| 440 | \r |
| 441 | // here we render sound if ym2612 is disabled\r |
| 442 | if (!(PicoOpt&1) && PsndOut) {\r |
| 443 | int len = PsndRender(0, PsndLen);\r |
| 444 | if (PicoWriteSound) PicoWriteSound(len);\r |
| 445 | // clear sound buffer\r |
| 446 | PsndClear();\r |
| 447 | }\r |
| 448 | \r |
| 449 | // a gap between flags set and vint\r |
| 450 | pv->pending_ints|=0x20;\r |
| 451 | pv->status|=8; // go into vblank\r |
| 452 | SekRunM68k(68+4);\r |
| 453 | \r |
| 454 | // ---- V-Blanking period ----\r |
| 455 | // fix line counts\r |
| 456 | if(Pico.m.pal) {\r |
| 457 | if(pv->reg[1]&8) { // 240 lines\r |
| 458 | lines = line = 240;\r |
| 459 | sects = 3;\r |
| 460 | lines_step = 24;\r |
| 461 | } else {\r |
| 462 | lines = line = 224;\r |
| 463 | sects = 4;\r |
| 464 | lines_step = 22;\r |
| 465 | }\r |
| 466 | } else {\r |
| 467 | lines = line = 224;\r |
| 468 | sects = 2;\r |
| 469 | lines_step = 19;\r |
| 470 | }\r |
| 471 | \r |
| 472 | if (pv->reg[1]&0x20) SekInterrupt(6); // Set IRQ\r |
| 473 | if (Pico.m.z80Run && (PicoOpt&4))\r |
| 474 | z80_int();\r |
| 475 | \r |
| 476 | while (sects) {\r |
| 477 | lines += lines_step;\r |
| 478 | \r |
| 479 | SekRunM68k(cycles_68k_vblock);\r |
| 480 | \r |
| 481 | PicoRunZ80Simple(line, lines);\r |
| 482 | if (PicoLineHook) PicoLineHook(lines_step);\r |
| 483 | line=lines;\r |
| 484 | \r |
| 485 | sects--;\r |
| 486 | if (sects && CheckIdle()) break;\r |
| 487 | }\r |
| 488 | \r |
| 489 | // run Z80 for remaining sections\r |
| 490 | if (sects) {\r |
| 491 | lines += sects*lines_step;\r |
| 492 | PicoRunZ80Simple(line, lines);\r |
| 493 | if (PicoLineHook) PicoLineHook(sects*lines_step);\r |
| 494 | }\r |
| 495 | \r |
| 496 | return 0;\r |
| 497 | }\r |
| 498 | \r |
| 499 | int PicoFrame(void)\r |
| 500 | {\r |
| 501 | int acc;\r |
| 502 | \r |
| 503 | Pico.m.frame_count++;\r |
| 504 | \r |
| 505 | if (PicoMCD & 1) {\r |
| 506 | PicoFrameMCD();\r |
| 507 | return 0;\r |
| 508 | }\r |
| 509 | \r |
| 510 | // be accurate if we are asked for this\r |
| 511 | if(PicoOpt&0x40) acc=1;\r |
| 512 | // don't be accurate in alternative render mode, as hint effects will not be rendered anyway\r |
| 513 | else if(PicoOpt&0x10) acc = 0;\r |
| 514 | else acc=Pico.video.reg[0]&0x10; // be accurate if hints are used\r |
| 515 | \r |
| 516 | //if(Pico.video.reg[12]&0x2) Pico.video.status ^= 0x10; // change odd bit in interlace mode\r |
| 517 | \r |
| 518 | if(!(PicoOpt&0x10))\r |
| 519 | PicoFrameStart();\r |
| 520 | \r |
| 521 | if(acc)\r |
| 522 | PicoFrameHints();\r |
| 523 | else PicoFrameSimple();\r |
| 524 | \r |
| 525 | return 0;\r |
| 526 | }\r |
| 527 | \r |
| 528 | void PicoFrameDrawOnly(void)\r |
| 529 | {\r |
| 530 | int y;\r |
| 531 | PicoFrameStart();\r |
| 532 | for (y=0;y<224;y++) PicoLine(y);\r |
| 533 | }\r |
| 534 | \r |
| 535 | int PicoGetStat(pstat_t which)\r |
| 536 | {\r |
| 537 | switch (which)\r |
| 538 | {\r |
| 539 | case PS_PAL: return Pico.m.pal;\r |
| 540 | case PS_40_CELL: return Pico.video.reg[12]&1;\r |
| 541 | case PS_240_LINES: return Pico.m.pal && (Pico.video.reg[1]&8);\r |
| 542 | }\r |
| 543 | return 0;\r |
| 544 | }\r |
| 545 | \r |
| 546 | // callback to output message from emu\r |
| 547 | void (*PicoMessage)(const char *msg)=NULL;\r |
| 548 | \r |
| 549 | #if 1 // defined(__DEBUG_PRINT)\r |
| 550 | // tmp debug: dump some stuff\r |
| 551 | #define bit(r, x) ((r>>x)&1)\r |
| 552 | void z80_debug(char *dstr);\r |
| 553 | char *debugString(void)\r |
| 554 | {\r |
| 555 | #if 1\r |
| 556 | static char dstr[1024];\r |
| 557 | struct PicoVideo *pv=&Pico.video;\r |
| 558 | unsigned char *reg=pv->reg, r;\r |
| 559 | char *dstrp;\r |
| 560 | \r |
| 561 | dstrp = dstr;\r |
| 562 | sprintf(dstrp, "mode set 1: %02x\n", (r=reg[0])); dstrp+=strlen(dstrp);\r |
| 563 | sprintf(dstrp, "display_disable: %i, M3: %i, palette: %i, ?, hints: %i\n", bit(r,0), bit(r,1), bit(r,2), bit(r,4));\r |
| 564 | dstrp+=strlen(dstrp);\r |
| 565 | sprintf(dstrp, "mode set 2: %02x\n", (r=reg[1])); dstrp+=strlen(dstrp);\r |
| 566 | sprintf(dstrp, "SMS/gen: %i, pal: %i, dma: %i, vints: %i, disp: %i, TMS: %i\n", bit(r,2), bit(r,3), bit(r,4),\r |
| 567 | bit(r,5), bit(r,6), bit(r,7)); dstrp+=strlen(dstrp);\r |
| 568 | sprintf(dstrp, "mode set 3: %02x\n", (r=reg[0xB])); dstrp+=strlen(dstrp);\r |
| 569 | sprintf(dstrp, "LSCR: %i, HSCR: %i, 2cell vscroll: %i, IE2: %i\n", bit(r,0), bit(r,1), bit(r,2), bit(r,3)); dstrp+=strlen(dstrp);\r |
| 570 | sprintf(dstrp, "mode set 4: %02x\n", (r=reg[0xC])); dstrp+=strlen(dstrp);\r |
| 571 | sprintf(dstrp, "interlace: %i%i, cells: %i, shadow: %i\n", bit(r,2), bit(r,1), (r&0x80) ? 40 : 32, bit(r,3));\r |
| 572 | dstrp+=strlen(dstrp);\r |
| 573 | sprintf(dstrp, "scroll size: w: %i, h: %i SRAM: %i; eeprom: %i (%i)\n", reg[0x10]&3, (reg[0x10]&0x30)>>4,\r |
| 574 | bit(Pico.m.sram_reg, 4), bit(Pico.m.sram_reg, 2), SRam.eeprom_type); dstrp+=strlen(dstrp);\r |
| 575 | sprintf(dstrp, "sram range: %06x-%06x, reg: %02x\n", SRam.start, SRam.end, Pico.m.sram_reg); dstrp+=strlen(dstrp);\r |
| 576 | sprintf(dstrp, "pend int: v:%i, h:%i, vdp status: %04x\n", bit(pv->pending_ints,5), bit(pv->pending_ints,4), pv->status);\r |
| 577 | dstrp+=strlen(dstrp);\r |
| 578 | #if defined(EMU_C68K)\r |
| 579 | sprintf(dstrp, "M68k: PC: %06x, st_flg: %x, cycles: %u\n", SekPc, PicoCpuCM68k.state_flags, SekCyclesDoneT());\r |
| 580 | dstrp+=strlen(dstrp);\r |
| 581 | sprintf(dstrp, "d0=%08x, a0=%08x, osp=%08x, irql=%i\n", PicoCpuCM68k.d[0], PicoCpuCM68k.a[0], PicoCpuCM68k.osp, PicoCpuCM68k.irq); dstrp+=strlen(dstrp);\r |
| 582 | sprintf(dstrp, "d1=%08x, a1=%08x, sr=%04x\n", PicoCpuCM68k.d[1], PicoCpuCM68k.a[1], CycloneGetSr(&PicoCpuCM68k)); dstrp+=strlen(dstrp);\r |
| 583 | for(r=2; r < 8; r++) {\r |
| 584 | sprintf(dstrp, "d%i=%08x, a%i=%08x\n", r, PicoCpuCM68k.d[r], r, PicoCpuCM68k.a[r]); dstrp+=strlen(dstrp);\r |
| 585 | }\r |
| 586 | #elif defined(EMU_M68K)\r |
| 587 | sprintf(dstrp, "M68k: PC: %06x, cycles: %u, irql: %i\n", SekPc, SekCyclesDoneT(), PicoCpuMM68k.int_level>>8); dstrp+=strlen(dstrp);\r |
| 588 | #elif defined(EMU_F68K)\r |
| 589 | sprintf(dstrp, "M68k: PC: %06x, cycles: %u, irql: %i\n", SekPc, SekCyclesDoneT(), PicoCpuFM68k.interrupts[0]); dstrp+=strlen(dstrp);\r |
| 590 | #endif\r |
| 591 | sprintf(dstrp, "z80Run: %i, pal: %i, frame#: %i\n", Pico.m.z80Run, Pico.m.pal, Pico.m.frame_count); dstrp+=strlen(dstrp);\r |
| 592 | z80_debug(dstrp); dstrp+=strlen(dstrp);\r |
| 593 | if (strlen(dstr) > sizeof(dstr))\r |
| 594 | printf("warning: debug buffer overflow (%i/%i)\n", strlen(dstr), sizeof(dstr));\r |
| 595 | \r |
| 596 | #else\r |
| 597 | struct PicoVideo *pvid=&Pico.video;\r |
| 598 | int table=0;\r |
| 599 | int i,u,n,link=0;\r |
| 600 | static char dstr[1024*8];\r |
| 601 | dstr[0] = 0;\r |
| 602 | \r |
| 603 | table=pvid->reg[5]&0x7f;\r |
| 604 | if (pvid->reg[12]&1) table&=0x7e; // Lowest bit 0 in 40-cell mode\r |
| 605 | table<<=8; // Get sprite table address/2\r |
| 606 | \r |
| 607 | for (i=u=n=0; u < 80 && n < 20; u++)\r |
| 608 | {\r |
| 609 | unsigned int *sprite;\r |
| 610 | int code, code2, sx, sy, height;\r |
| 611 | \r |
| 612 | sprite=(unsigned int *)(Pico.vram+((table+(link<<2))&0x7ffc)); // Find sprite\r |
| 613 | \r |
| 614 | // get sprite info\r |
| 615 | code = sprite[0];\r |
| 616 | \r |
| 617 | // check if it is on this line\r |
| 618 | sy = (code&0x1ff);//-0x80;\r |
| 619 | height = ((code>>24)&3)+1;\r |
| 620 | \r |
| 621 | // masking sprite?\r |
| 622 | code2 = sprite[1];\r |
| 623 | sx = (code2>>16)&0x1ff;\r |
| 624 | \r |
| 625 | printf("#%02i x: %03i y: %03i %ix%i\n", u, sx, sy, ((code>>26)&3)+1, height);\r |
| 626 | \r |
| 627 | link=(code>>16)&0x7f;\r |
| 628 | if(!link) break; // End of sprites\r |
| 629 | }\r |
| 630 | #endif\r |
| 631 | \r |
| 632 | return dstr;\r |
| 633 | }\r |
| 634 | #endif\r |