| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2002 Ben Parnell |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include <string.h> |
| 23 | #include <stdio.h> |
| 24 | #include <stdlib.h> |
| 25 | |
| 26 | #include "types.h" |
| 27 | #include "x6502.h" |
| 28 | #include "fce.h" |
| 29 | #include "sound.h" |
| 30 | #include "svga.h" |
| 31 | #include "netplay.h" |
| 32 | #include "general.h" |
| 33 | #include "endian.h" |
| 34 | #include "version.h" |
| 35 | #include "memory.h" |
| 36 | |
| 37 | #include "cart.h" |
| 38 | #include "nsf.h" |
| 39 | #include "fds.h" |
| 40 | #include "ines.h" |
| 41 | #include "unif.h" |
| 42 | #include "cheat.h" |
| 43 | |
| 44 | #include "state.h" |
| 45 | #include "video.h" |
| 46 | #include "input.h" |
| 47 | #include "file.h" |
| 48 | #include "crc32.h" |
| 49 | #include "ppu.h" |
| 50 | |
| 51 | #define Pal (PALRAM) |
| 52 | |
| 53 | |
| 54 | static void FASTAPASS(1) RefreshLine(uint8 *target); |
| 55 | static void PRefreshLine(void); |
| 56 | |
| 57 | static void ResetPPU(void); |
| 58 | static void PowerPPU(void); |
| 59 | |
| 60 | uint64 timestampbase=0; |
| 61 | |
| 62 | int MMC5Hack; |
| 63 | uint32 MMC5HackVROMMask; |
| 64 | uint8 *MMC5HackExNTARAMPtr; |
| 65 | uint8 *MMC5HackVROMPTR; |
| 66 | uint8 MMC5HackCHRMode=0; |
| 67 | uint8 MMC5HackSPMode; |
| 68 | uint8 MMC5HackSPScroll; |
| 69 | uint8 MMC5HackSPPage; |
| 70 | |
| 71 | uint8 *MMC5SPRVPage[8]; |
| 72 | uint8 *MMC5BGVPage[8]; |
| 73 | |
| 74 | |
| 75 | uint8 VRAMBuffer,PPUGenLatch; |
| 76 | |
| 77 | uint8 *vnapage[4]; |
| 78 | uint8 PPUNTARAM; |
| 79 | uint8 PPUCHRRAM; |
| 80 | |
| 81 | /* Color deemphasis emulation. Joy... */ |
| 82 | static uint8 deemp=0; |
| 83 | static int deempcnt[8]; |
| 84 | |
| 85 | int tosprite=256; |
| 86 | |
| 87 | FCEUGI FCEUGameInfo; |
| 88 | void (*GameInterface)(int h); |
| 89 | |
| 90 | void FP_FASTAPASS(1) (*PPU_hook)(uint32 A); |
| 91 | |
| 92 | void (*GameStateRestore)(int version); |
| 93 | void (*GameHBIRQHook)(void); |
| 94 | |
| 95 | readfunc ARead[0x10000]; |
| 96 | writefunc BWrite[0x10000]; |
| 97 | static readfunc *AReadG; |
| 98 | static writefunc *BWriteG; |
| 99 | static int RWWrap=0; |
| 100 | |
| 101 | DECLFW(BNull) |
| 102 | { |
| 103 | |
| 104 | } |
| 105 | |
| 106 | DECLFR(ANull) |
| 107 | { |
| 108 | return(X.DB); |
| 109 | } |
| 110 | |
| 111 | int AllocGenieRW(void) |
| 112 | { |
| 113 | if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc)))) |
| 114 | return 0; |
| 115 | if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc)))) |
| 116 | return 0; |
| 117 | RWWrap=1; |
| 118 | return 1; |
| 119 | } |
| 120 | |
| 121 | void FlushGenieRW(void) |
| 122 | { |
| 123 | int32 x; |
| 124 | |
| 125 | if(RWWrap) |
| 126 | { |
| 127 | for(x=0;x<0x8000;x++) |
| 128 | { |
| 129 | ARead[x+0x8000]=AReadG[x]; |
| 130 | BWrite[x+0x8000]=BWriteG[x]; |
| 131 | } |
| 132 | free(AReadG); |
| 133 | free(BWriteG); |
| 134 | AReadG=0; |
| 135 | BWriteG=0; |
| 136 | RWWrap=0; |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | readfunc FASTAPASS(1) GetReadHandler(int32 a) |
| 141 | { |
| 142 | if(a>=0x8000 && RWWrap) |
| 143 | return AReadG[a-0x8000]; |
| 144 | else |
| 145 | return ARead[a]; |
| 146 | } |
| 147 | |
| 148 | void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func) |
| 149 | { |
| 150 | int32 x; |
| 151 | |
| 152 | if(!func) |
| 153 | func=ANull; |
| 154 | |
| 155 | if(RWWrap) |
| 156 | for(x=end;x>=start;x--) |
| 157 | { |
| 158 | if(x>=0x8000) |
| 159 | AReadG[x-0x8000]=func; |
| 160 | else |
| 161 | ARead[x]=func; |
| 162 | } |
| 163 | else |
| 164 | |
| 165 | for(x=end;x>=start;x--) |
| 166 | ARead[x]=func; |
| 167 | } |
| 168 | |
| 169 | writefunc FASTAPASS(1) GetWriteHandler(int32 a) |
| 170 | { |
| 171 | if(RWWrap && a>=0x8000) |
| 172 | return BWriteG[a-0x8000]; |
| 173 | else |
| 174 | return BWrite[a]; |
| 175 | } |
| 176 | |
| 177 | void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func) |
| 178 | { |
| 179 | int32 x; |
| 180 | |
| 181 | if(!func) |
| 182 | func=BNull; |
| 183 | |
| 184 | if(RWWrap) |
| 185 | for(x=end;x>=start;x--) |
| 186 | { |
| 187 | if(x>=0x8000) |
| 188 | BWriteG[x-0x8000]=func; |
| 189 | else |
| 190 | BWrite[x]=func; |
| 191 | } |
| 192 | else |
| 193 | for(x=end;x>=start;x--) |
| 194 | BWrite[x]=func; |
| 195 | } |
| 196 | |
| 197 | uint8 vtoggle=0; |
| 198 | uint8 XOffset=0; |
| 199 | |
| 200 | uint32 TempAddr,RefreshAddr; |
| 201 | |
| 202 | |
| 203 | /* scanline is equal to the current visible scanline we're on. */ |
| 204 | |
| 205 | int scanline; |
| 206 | static uint32 scanlines_per_frame; |
| 207 | |
| 208 | uint8 PPU[4]; |
| 209 | uint8 PPUSPL; |
| 210 | |
| 211 | uint8 GameMemBlock[131072]; |
| 212 | uint8 NTARAM[0x800],PALRAM[0x20]; |
| 213 | uint8 RAM[0x800]; |
| 214 | |
| 215 | uint8 PAL=0; |
| 216 | |
| 217 | |
| 218 | #define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)] |
| 219 | #define VRAMADR(V) &VPage[(V)>>10][(V)] |
| 220 | |
| 221 | static DECLFW(BRAML) |
| 222 | { |
| 223 | RAM[A]=V; |
| 224 | } |
| 225 | |
| 226 | static DECLFW(BRAMH) |
| 227 | { |
| 228 | RAM[A&0x7FF]=V; |
| 229 | } |
| 230 | |
| 231 | static DECLFR(ARAML) |
| 232 | { |
| 233 | return RAM[A]; |
| 234 | } |
| 235 | |
| 236 | static DECLFR(ARAMH) |
| 237 | { |
| 238 | return RAM[A&0x7FF]; |
| 239 | } |
| 240 | |
| 241 | |
| 242 | static DECLFR(A2002) |
| 243 | { |
| 244 | uint8 ret; |
| 245 | ret = PPU_status; |
| 246 | vtoggle=0; |
| 247 | PPU_status&=0x7F; |
| 248 | return ret|(PPUGenLatch&0x1F); |
| 249 | } |
| 250 | |
| 251 | static DECLFR(A200x) |
| 252 | { |
| 253 | return PPUGenLatch; |
| 254 | } |
| 255 | |
| 256 | static DECLFR(A2007) |
| 257 | { |
| 258 | uint8 ret; |
| 259 | uint32 tmp=RefreshAddr&0x3FFF; |
| 260 | |
| 261 | PPUGenLatch=ret=VRAMBuffer; |
| 262 | if(PPU_hook) PPU_hook(tmp); |
| 263 | if(tmp<0x2000) |
| 264 | { |
| 265 | VRAMBuffer=VPage[tmp>>10][tmp]; |
| 266 | } |
| 267 | else |
| 268 | { |
| 269 | VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF]; |
| 270 | } |
| 271 | |
| 272 | if (INC32) RefreshAddr+=32; |
| 273 | else RefreshAddr++; |
| 274 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 275 | return ret; |
| 276 | } |
| 277 | |
| 278 | static DECLFW(B2000) |
| 279 | { |
| 280 | PPUGenLatch=V; |
| 281 | PPU[0]=V; |
| 282 | TempAddr&=0xF3FF; |
| 283 | TempAddr|=(V&3)<<10; |
| 284 | } |
| 285 | |
| 286 | static DECLFW(B2001) |
| 287 | { |
| 288 | PPUGenLatch=V; |
| 289 | PPU[1]=V; |
| 290 | if(V&0xE0) |
| 291 | deemp=V>>5; |
| 292 | //printf("$%04x:$%02x, %d\n",X.PC,V,scanline); |
| 293 | } |
| 294 | |
| 295 | static DECLFW(B2002) |
| 296 | { |
| 297 | PPUGenLatch=V; |
| 298 | } |
| 299 | |
| 300 | static DECLFW(B2003) |
| 301 | { |
| 302 | PPUGenLatch=V; |
| 303 | PPU[3]=V; |
| 304 | PPUSPL=V&0x7; |
| 305 | } |
| 306 | |
| 307 | static DECLFW(B2004) |
| 308 | { |
| 309 | PPUGenLatch=V; |
| 310 | //SPRAM[PPU[3]++]=V; |
| 311 | if(PPUSPL&8) |
| 312 | { |
| 313 | if(PPU[3]>=8) |
| 314 | SPRAM[PPU[3]]=V; |
| 315 | } |
| 316 | else |
| 317 | { |
| 318 | //printf("$%02x:$%02x\n",PPUSPL,V); |
| 319 | SPRAM[PPUSPL]=V; |
| 320 | PPUSPL++; |
| 321 | } |
| 322 | PPU[3]++; |
| 323 | |
| 324 | } |
| 325 | |
| 326 | static DECLFW(B2005) |
| 327 | { |
| 328 | uint32 tmp=TempAddr; |
| 329 | |
| 330 | PPUGenLatch=V; |
| 331 | if (!vtoggle) |
| 332 | { |
| 333 | tmp&=0xFFE0; |
| 334 | tmp|=V>>3; |
| 335 | XOffset=V&7; |
| 336 | } |
| 337 | else |
| 338 | { |
| 339 | tmp&=0x8C1F; |
| 340 | tmp|=((V&~0x7)<<2); |
| 341 | tmp|=(V&7)<<12; |
| 342 | } |
| 343 | |
| 344 | TempAddr=tmp; |
| 345 | vtoggle^=1; |
| 346 | } |
| 347 | |
| 348 | static DECLFW(B2006) |
| 349 | { |
| 350 | PPUGenLatch=V; |
| 351 | if(!vtoggle) |
| 352 | { |
| 353 | TempAddr&=0x00FF; |
| 354 | TempAddr|=(V&0x3f)<<8; |
| 355 | } |
| 356 | else |
| 357 | { |
| 358 | TempAddr&=0xFF00; |
| 359 | TempAddr|=V; |
| 360 | RefreshAddr=TempAddr; |
| 361 | |
| 362 | if(PPU_hook) |
| 363 | PPU_hook(RefreshAddr); |
| 364 | } |
| 365 | vtoggle^=1; |
| 366 | } |
| 367 | |
| 368 | static DECLFW(B2007) |
| 369 | { |
| 370 | uint32 tmp=RefreshAddr&0x3FFF; |
| 371 | |
| 372 | PPUGenLatch=V; |
| 373 | if(tmp>=0x3F00) |
| 374 | { |
| 375 | // hmmm.... |
| 376 | if(!(tmp&0xf)) |
| 377 | PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]= |
| 378 | PALRAM[0x10]=PALRAM[0x14]=PALRAM[0x18]=PALRAM[0x1c]=V&0x3f; |
| 379 | else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f; |
| 380 | } |
| 381 | else if(tmp<0x2000) |
| 382 | { |
| 383 | if(PPUCHRRAM&(1<<(tmp>>10))) |
| 384 | VPage[tmp>>10][tmp]=V; |
| 385 | } |
| 386 | else |
| 387 | { |
| 388 | if(PPUNTARAM&(1<<((tmp&0xF00)>>10))) |
| 389 | vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V; |
| 390 | } |
| 391 | if (INC32) RefreshAddr+=32; |
| 392 | else RefreshAddr++; |
| 393 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 394 | } |
| 395 | |
| 396 | static DECLFW(B4014) |
| 397 | { |
| 398 | uint32 t=V<<8; |
| 399 | int x; |
| 400 | for(x=0;x<256;x++) |
| 401 | B2004(0x2004,X.DB=ARead[t+x](t+x)); |
| 402 | X6502_AddCycles(512); |
| 403 | } |
| 404 | |
| 405 | void BGRender(uint8 *target) |
| 406 | { |
| 407 | uint32 tem; |
| 408 | RefreshLine(target); |
| 409 | if(!(PPU[1]&2)) |
| 410 | { |
| 411 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 412 | tem|=0x40404040; |
| 413 | *(uint32 *)target=*(uint32 *)(target+4)=tem; |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | #ifdef FRAMESKIP |
| 418 | int FSkip_setting=-1; // auto |
| 419 | int FSkip=0; |
| 420 | void FCEUI_FrameSkip(int x) |
| 421 | { |
| 422 | FSkip=x; |
| 423 | } |
| 424 | #endif |
| 425 | |
| 426 | /* This is called at the beginning of each visible scanline */ |
| 427 | static void Loop6502(void) |
| 428 | { |
| 429 | uint32 tem; |
| 430 | int x; |
| 431 | uint8 *target=XBuf+(scanline<<8)+(scanline<<4)+8; |
| 432 | |
| 433 | if(ScreenON || SpriteON) |
| 434 | { |
| 435 | /* PRefreshLine() will not get called on skipped frames. This |
| 436 | could cause a problem, but the solution would be rather complex, |
| 437 | due to the current sprite 0 hit code. |
| 438 | */ |
| 439 | #ifdef FRAMESKIP |
| 440 | if(!FSkip) |
| 441 | { |
| 442 | #endif |
| 443 | if(ScreenON) |
| 444 | { |
| 445 | if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine) |
| 446 | BGRender(target); |
| 447 | else |
| 448 | { |
| 449 | if(PPU_hook) |
| 450 | PRefreshLine(); |
| 451 | } |
| 452 | } |
| 453 | else |
| 454 | { |
| 455 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 456 | tem|=0x40404040; |
| 457 | FCEU_dwmemset(target,tem,264); |
| 458 | } |
| 459 | #ifdef FRAMESKIP |
| 460 | } |
| 461 | #endif |
| 462 | if (SpriteON && scanline) |
| 463 | RefreshSprite(target); |
| 464 | #ifdef FRAMESKIP |
| 465 | if(!FSkip) |
| 466 | { |
| 467 | #endif |
| 468 | if(PPU[1]&0x01) |
| 469 | { |
| 470 | for(x=63;x>=0;x--) |
| 471 | *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0xF0F0F0F0; |
| 472 | } |
| 473 | if((PPU[1]>>5)==0x7) |
| 474 | for(x=63;x>=0;x--) |
| 475 | *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x40404040; |
| 476 | else if(PPU[1]&0xE0) |
| 477 | for(x=63;x>=0;x--) |
| 478 | *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0xC0C0C0C0; |
| 479 | else |
| 480 | for(x=63;x>=0;x--) |
| 481 | *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x3f3f3f3f; |
| 482 | |
| 483 | #ifdef FRAMESKIP |
| 484 | } |
| 485 | #endif |
| 486 | } |
| 487 | else |
| 488 | { |
| 489 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 490 | FCEU_dwmemset(target,tem,256); |
| 491 | } |
| 492 | if(InputScanlineHook) |
| 493 | InputScanlineHook(target, scanline); |
| 494 | } |
| 495 | |
| 496 | #define PAL(c) ((c)+cc) |
| 497 | |
| 498 | |
| 499 | static void PRefreshLine(void) |
| 500 | { |
| 501 | uint32 vofs; |
| 502 | uint8 X1; |
| 503 | |
| 504 | vofs = 0; |
| 505 | if (BGAdrHI) vofs = 0x1000; |
| 506 | |
| 507 | vofs+=(RefreshAddr>>12)&7; |
| 508 | |
| 509 | for(X1=33;X1;X1--) |
| 510 | { |
| 511 | register uint8 no; |
| 512 | register uint8 zz2; |
| 513 | zz2=(uint8)((RefreshAddr>>10)&3); |
| 514 | PPU_hook(0x2000|(RefreshAddr&0xFFF)); |
| 515 | no = vnapage[zz2][(RefreshAddr&0x3ff)]; |
| 516 | PPU_hook((no<<4)+vofs); |
| 517 | if((RefreshAddr&0x1f)==0x1f) |
| 518 | RefreshAddr^=0x41F; |
| 519 | else |
| 520 | RefreshAddr++; |
| 521 | } |
| 522 | } |
| 523 | |
| 524 | /* Total of 33 tiles(32 + 1 extra) */ |
| 525 | static void FASTAPASS(1) RefreshLine(uint8 *target) |
| 526 | { |
| 527 | uint32 vofs; |
| 528 | int X1; |
| 529 | uint8 *P=target; |
| 530 | |
| 531 | vofs=0; |
| 532 | |
| 533 | Pal[0]|=64; |
| 534 | Pal[4]|=64; |
| 535 | Pal[8]|=64; |
| 536 | Pal[0xC]|=64; |
| 537 | |
| 538 | vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7); |
| 539 | P-=XOffset; |
| 540 | |
| 541 | /* This high-level graphics MMC5 emulation code was written |
| 542 | for MMC5 carts in "CL" mode. It's probably not totally |
| 543 | correct for carts in "SL" mode. |
| 544 | */ |
| 545 | if(MMC5Hack && geniestage!=1) |
| 546 | { |
| 547 | if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80)) |
| 548 | { |
| 549 | int8 tochange; |
| 550 | |
| 551 | tochange=MMC5HackSPMode&0x1F; |
| 552 | |
| 553 | for(X1=33;X1;X1--,P+=8) |
| 554 | { |
| 555 | uint8 *C; |
| 556 | uint8 cc,zz,zz2; |
| 557 | uint32 vadr; |
| 558 | |
| 559 | if((tochange<=0 && MMC5HackSPMode&0x40) || |
| 560 | (tochange>0 && !(MMC5HackSPMode&0x40))) |
| 561 | { |
| 562 | uint8 xs,ys; |
| 563 | |
| 564 | xs=33-X1; |
| 565 | ys=((scanline>>3)+MMC5HackSPScroll)&0x1F; |
| 566 | if(ys>=0x1E) ys-=0x1E; |
| 567 | vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7); |
| 568 | |
| 569 | C = MMC5HackVROMPTR+vadr; |
| 570 | C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12); |
| 571 | |
| 572 | cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)]; |
| 573 | cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2; |
| 574 | } |
| 575 | else |
| 576 | { |
| 577 | zz=RefreshAddr&0x1F; |
| 578 | zz2=(RefreshAddr>>10)&3; |
| 579 | vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs; |
| 580 | C = MMC5BGVRAMADR(vadr); |
| 581 | cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)]; |
| 582 | cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2; |
| 583 | } |
| 584 | #include "fceline.h" |
| 585 | |
| 586 | if((RefreshAddr&0x1f)==0x1f) |
| 587 | RefreshAddr^=0x41F; |
| 588 | else |
| 589 | RefreshAddr++; |
| 590 | tochange--; |
| 591 | } |
| 592 | } |
| 593 | else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80)) |
| 594 | { |
| 595 | int8 tochange; |
| 596 | |
| 597 | tochange=MMC5HackSPMode&0x1F; |
| 598 | |
| 599 | for(X1=33;X1;X1--,P+=8) |
| 600 | { |
| 601 | uint8 *C; |
| 602 | uint8 cc; |
| 603 | uint8 zz2; |
| 604 | uint32 vadr; |
| 605 | |
| 606 | if((tochange<=0 && MMC5HackSPMode&0x40) || |
| 607 | (tochange>0 && !(MMC5HackSPMode&0x40))) |
| 608 | { |
| 609 | uint8 xs,ys; |
| 610 | |
| 611 | xs=33-X1; |
| 612 | ys=((scanline>>3)+MMC5HackSPScroll)&0x1F; |
| 613 | if(ys>=0x1E) ys-=0x1E; |
| 614 | vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7); |
| 615 | |
| 616 | C = MMC5HackVROMPTR+vadr; |
| 617 | C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12); |
| 618 | |
| 619 | cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)]; |
| 620 | cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2; |
| 621 | } |
| 622 | else |
| 623 | { |
| 624 | C=MMC5HackVROMPTR; |
| 625 | zz2=(RefreshAddr>>10)&3; |
| 626 | vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs; |
| 627 | C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f & |
| 628 | MMC5HackVROMMask) << 12) + (vadr & 0xfff); |
| 629 | vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4; |
| 630 | cc = vadr; |
| 631 | } |
| 632 | #include "fceline.h" |
| 633 | if((RefreshAddr&0x1f)==0x1f) |
| 634 | RefreshAddr^=0x41F; |
| 635 | else |
| 636 | RefreshAddr++; |
| 637 | tochange--; |
| 638 | } |
| 639 | } |
| 640 | |
| 641 | else if(MMC5HackCHRMode==1) |
| 642 | { |
| 643 | for(X1=33;X1;X1--,P+=8) |
| 644 | { |
| 645 | uint8 *C; |
| 646 | uint8 cc; |
| 647 | uint8 zz2; |
| 648 | uint32 vadr; |
| 649 | |
| 650 | C=MMC5HackVROMPTR; |
| 651 | zz2=(RefreshAddr>>10)&3; |
| 652 | vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs; |
| 653 | C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f & |
| 654 | MMC5HackVROMMask) << 12) + (vadr & 0xfff); |
| 655 | vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4; |
| 656 | cc = vadr; |
| 657 | |
| 658 | #include "fceline.h" |
| 659 | if((RefreshAddr&0x1f)==0x1f) |
| 660 | RefreshAddr^=0x41F; |
| 661 | else |
| 662 | RefreshAddr++; |
| 663 | } |
| 664 | } |
| 665 | else |
| 666 | { |
| 667 | for(X1=33;X1;X1--,P+=8) |
| 668 | { |
| 669 | uint8 *C; |
| 670 | uint8 cc,zz,zz2; |
| 671 | uint32 vadr; |
| 672 | |
| 673 | zz=RefreshAddr&0x1F; |
| 674 | zz2=(RefreshAddr>>10)&3; |
| 675 | vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs; |
| 676 | C = MMC5BGVRAMADR(vadr); |
| 677 | cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)]; |
| 678 | cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2; |
| 679 | |
| 680 | #include "fceline.h" |
| 681 | |
| 682 | if((RefreshAddr&0x1f)==0x1f) |
| 683 | RefreshAddr^=0x41F; |
| 684 | else |
| 685 | RefreshAddr++; |
| 686 | } |
| 687 | } |
| 688 | } // End if(MMC5Hack) |
| 689 | |
| 690 | else if(PPU_hook) |
| 691 | { |
| 692 | for(X1=33;X1;X1--,P+=8) |
| 693 | { |
| 694 | uint8 *C; |
| 695 | uint8 cc,zz,zz2; |
| 696 | uint32 vadr; |
| 697 | |
| 698 | zz=RefreshAddr&0x1F; |
| 699 | zz2=(RefreshAddr>>10)&3; |
| 700 | PPU_hook(0x2000|(RefreshAddr&0xFFF)); |
| 701 | cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)]; |
| 702 | cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2; |
| 703 | vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs; |
| 704 | C = VRAMADR(vadr); |
| 705 | |
| 706 | #include "fceline.h" |
| 707 | |
| 708 | PPU_hook(vadr); |
| 709 | |
| 710 | if((RefreshAddr&0x1f)==0x1f) |
| 711 | RefreshAddr^=0x41F; |
| 712 | else |
| 713 | RefreshAddr++; |
| 714 | } |
| 715 | } |
| 716 | else |
| 717 | { |
| 718 | for(X1=33;X1;X1--,P+=8) |
| 719 | { |
| 720 | uint8 *C; |
| 721 | uint8 cc,zz,zz2; |
| 722 | uint32 vadr; |
| 723 | |
| 724 | zz=RefreshAddr&0x1F; |
| 725 | zz2=(RefreshAddr>>10)&3; |
| 726 | vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs; |
| 727 | C = VRAMADR(vadr); |
| 728 | cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)]; |
| 729 | cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2; |
| 730 | #include "fceline.h" |
| 731 | |
| 732 | if((RefreshAddr&0x1f)==0x1f) |
| 733 | RefreshAddr^=0x41F; |
| 734 | else |
| 735 | RefreshAddr++; |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | #undef vofs |
| 740 | |
| 741 | Pal[0]&=63; |
| 742 | Pal[4]&=63; |
| 743 | Pal[8]&=63; |
| 744 | Pal[0xC]&=63; |
| 745 | } |
| 746 | |
| 747 | static INLINE void Fixit2(void) |
| 748 | { |
| 749 | if(ScreenON || SpriteON) |
| 750 | { |
| 751 | uint32 rad=RefreshAddr; |
| 752 | rad&=0xFBE0; |
| 753 | rad|=TempAddr&0x041f; |
| 754 | RefreshAddr=rad; |
| 755 | //PPU_hook(RefreshAddr,-1); |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | static INLINE void Fixit1(void) |
| 760 | { |
| 761 | if(ScreenON || SpriteON) |
| 762 | { |
| 763 | uint32 rad=RefreshAddr; |
| 764 | |
| 765 | if((rad&0x7000)==0x7000) |
| 766 | { |
| 767 | rad^=0x7000; |
| 768 | if((rad&0x3E0)==0x3A0) |
| 769 | { |
| 770 | rad^=0x3A0; |
| 771 | rad^=0x800; |
| 772 | } |
| 773 | else |
| 774 | { |
| 775 | if((rad&0x3E0)==0x3e0) |
| 776 | rad^=0x3e0; |
| 777 | else rad+=0x20; |
| 778 | } |
| 779 | } |
| 780 | else |
| 781 | rad+=0x1000; |
| 782 | RefreshAddr=rad; |
| 783 | //PPU_hook(RefreshAddr,-1); |
| 784 | } |
| 785 | } |
| 786 | |
| 787 | /* This is called at the beginning of all h-blanks on visible lines. */ |
| 788 | static void DoHBlank(void) |
| 789 | { |
| 790 | if(ScreenON || SpriteON) |
| 791 | FetchSpriteData(); |
| 792 | if(GameHBIRQHook && (ScreenON || SpriteON)) |
| 793 | { |
| 794 | X6502_Run(12); |
| 795 | GameHBIRQHook(); |
| 796 | X6502_Run(25-12); |
| 797 | Fixit2(); |
| 798 | X6502_Run(85-25); |
| 799 | } |
| 800 | else |
| 801 | { |
| 802 | X6502_Run(25); // Tried 65, caused problems with Slalom(maybe others) |
| 803 | Fixit2(); |
| 804 | X6502_Run(85-25); |
| 805 | } |
| 806 | //PPU_hook(0,-1); |
| 807 | //fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr); |
| 808 | } |
| 809 | |
| 810 | |
| 811 | |
| 812 | |
| 813 | |
| 814 | |
| 815 | |
| 816 | |
| 817 | |
| 818 | |
| 819 | |
| 820 | |
| 821 | |
| 822 | |
| 823 | |
| 824 | |
| 825 | |
| 826 | // ============================// |
| 827 | // end of new code |
| 828 | // ===========================// |
| 829 | |
| 830 | void ResetMapping(void) |
| 831 | { |
| 832 | int x; |
| 833 | |
| 834 | SetReadHandler(0x0000,0xFFFF,ANull); |
| 835 | SetWriteHandler(0x0000,0xFFFF,BNull); |
| 836 | |
| 837 | SetReadHandler(0,0x7FF,ARAML); |
| 838 | SetWriteHandler(0,0x7FF,BRAML); |
| 839 | |
| 840 | SetReadHandler(0x800,0x1FFF,ARAMH); /* Part of a little */ |
| 841 | SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */ |
| 842 | |
| 843 | for(x=0x2000;x<0x4000;x+=8) |
| 844 | { |
| 845 | ARead[x]=A200x; |
| 846 | BWrite[x]=B2000; |
| 847 | ARead[x+1]=A200x; |
| 848 | BWrite[x+1]=B2001; |
| 849 | ARead[x+2]=A2002; |
| 850 | BWrite[x+2]=B2002; |
| 851 | ARead[x+3]=A200x; |
| 852 | BWrite[x+3]=B2003; |
| 853 | ARead[x+4]=A200x; |
| 854 | BWrite[x+4]=B2004; |
| 855 | ARead[x+5]=A200x; |
| 856 | BWrite[x+5]=B2005; |
| 857 | ARead[x+6]=A200x; |
| 858 | BWrite[x+6]=B2006; |
| 859 | ARead[x+7]=A2007; |
| 860 | BWrite[x+7]=B2007; |
| 861 | } |
| 862 | |
| 863 | BWrite[0x4014]=B4014; |
| 864 | SetNESSoundMap(); |
| 865 | InitializeInput(); |
| 866 | } |
| 867 | |
| 868 | int GameLoaded=0; |
| 869 | void CloseGame(void) |
| 870 | { |
| 871 | if(GameLoaded) |
| 872 | { |
| 873 | if(FCEUGameInfo.type!=GIT_NSF) |
| 874 | FlushGameCheats(); |
| 875 | #ifdef NETWORK |
| 876 | if(FSettings.NetworkPlay) KillNetplay(); |
| 877 | #endif |
| 878 | GameInterface(GI_CLOSE); |
| 879 | CloseGenie(); |
| 880 | GameLoaded=0; |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | void ResetGameLoaded(void) |
| 885 | { |
| 886 | if(GameLoaded) CloseGame(); |
| 887 | GameStateRestore=0; |
| 888 | PPU_hook=0; |
| 889 | GameHBIRQHook=0; |
| 890 | GameExpSound.Fill=0; |
| 891 | GameExpSound.RChange=0; |
| 892 | if(GameExpSound.Kill) |
| 893 | GameExpSound.Kill(); |
| 894 | GameExpSound.Kill=0; |
| 895 | MapIRQHook=0; |
| 896 | MMC5Hack=0; |
| 897 | PAL&=1; |
| 898 | pale=0; |
| 899 | |
| 900 | FCEUGameInfo.name=0; |
| 901 | FCEUGameInfo.type=GIT_CART; |
| 902 | FCEUGameInfo.vidsys=GIV_USER; |
| 903 | FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1; |
| 904 | FCEUGameInfo.inputfc=-1; |
| 905 | } |
| 906 | |
| 907 | FCEUGI *FCEUI_LoadGame(char *name) |
| 908 | { |
| 909 | int fp; |
| 910 | |
| 911 | Exit=1; |
| 912 | ResetGameLoaded(); |
| 913 | |
| 914 | fp=FCEU_fopen(name,"rb"); |
| 915 | if(!fp) |
| 916 | { |
| 917 | FCEU_PrintError("Error opening \"%s\"!",name); |
| 918 | return 0; |
| 919 | } |
| 920 | |
| 921 | GetFileBase(name); |
| 922 | if(iNESLoad(name,fp)) |
| 923 | goto endlseq; |
| 924 | if(NSFLoad(fp)) |
| 925 | goto endlseq; |
| 926 | if(FDSLoad(name,fp)) |
| 927 | goto endlseq; |
| 928 | if(UNIFLoad(name,fp)) |
| 929 | goto endlseq; |
| 930 | |
| 931 | FCEU_PrintError("An error occurred while loading the file."); |
| 932 | FCEU_fclose(fp); |
| 933 | return 0; |
| 934 | |
| 935 | endlseq: |
| 936 | FCEU_fclose(fp); |
| 937 | GameLoaded=1; |
| 938 | |
| 939 | FCEU_ResetVidSys(); |
| 940 | if(FCEUGameInfo.type!=GIT_NSF) |
| 941 | if(FSettings.GameGenie) |
| 942 | OpenGenie(); |
| 943 | |
| 944 | PowerNES(); |
| 945 | #ifdef NETWORK |
| 946 | if(FSettings.NetworkPlay) InitNetplay(); |
| 947 | #endif |
| 948 | SaveStateRefresh(); |
| 949 | if(FCEUGameInfo.type!=GIT_NSF) |
| 950 | { |
| 951 | LoadGamePalette(); |
| 952 | LoadGameCheats(); |
| 953 | } |
| 954 | |
| 955 | FCEU_ResetPalette(); |
| 956 | Exit=0; |
| 957 | return(&FCEUGameInfo); |
| 958 | } |
| 959 | |
| 960 | |
| 961 | void FCEU_ResetVidSys(void) |
| 962 | { |
| 963 | int w; |
| 964 | |
| 965 | if(FCEUGameInfo.vidsys==GIV_NTSC) |
| 966 | w=0; |
| 967 | else if(FCEUGameInfo.vidsys==GIV_PAL) |
| 968 | w=1; |
| 969 | else |
| 970 | w=FSettings.PAL; |
| 971 | |
| 972 | if(w) |
| 973 | { |
| 974 | PAL=1; |
| 975 | scanlines_per_frame=312; |
| 976 | FSettings.FirstSLine=FSettings.UsrFirstSLine[1]; |
| 977 | FSettings.LastSLine=FSettings.UsrLastSLine[1]; |
| 978 | } |
| 979 | else |
| 980 | { |
| 981 | PAL=0; |
| 982 | scanlines_per_frame=262; |
| 983 | FSettings.FirstSLine=FSettings.UsrFirstSLine[0]; |
| 984 | FSettings.LastSLine=FSettings.UsrLastSLine[0]; |
| 985 | } |
| 986 | printf("PAL = %i\n", PAL); |
| 987 | SetSoundVariables(); |
| 988 | } |
| 989 | |
| 990 | int FCEUI_Initialize(void) |
| 991 | { |
| 992 | if(!InitVirtualVideo()) |
| 993 | return 0; |
| 994 | memset(&FSettings,0,sizeof(FSettings)); |
| 995 | FSettings.UsrFirstSLine[0]=8; |
| 996 | FSettings.UsrFirstSLine[1]=0; |
| 997 | FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239; |
| 998 | FSettings.SoundVolume=65535; // 100% |
| 999 | return 1; |
| 1000 | } |
| 1001 | |
| 1002 | #define harko 0xe //0x9 |
| 1003 | static INLINE void Thingo(void) |
| 1004 | { |
| 1005 | Loop6502(); |
| 1006 | |
| 1007 | if(tosprite>=256) |
| 1008 | { |
| 1009 | X6502_Run(256-harko); |
| 1010 | Fixit1(); |
| 1011 | X6502_Run(harko); |
| 1012 | } |
| 1013 | else |
| 1014 | { |
| 1015 | if(tosprite<=240) |
| 1016 | { |
| 1017 | X6502_Run(tosprite); |
| 1018 | PPU[2]|=0x40; |
| 1019 | X6502_Run(256-tosprite-harko); |
| 1020 | Fixit1(); |
| 1021 | X6502_Run(harko); |
| 1022 | } |
| 1023 | else |
| 1024 | { |
| 1025 | X6502_Run(256-harko); |
| 1026 | Fixit1(); |
| 1027 | X6502_Run(tosprite-(256-harko)); |
| 1028 | PPU[2]|=0x40; |
| 1029 | X6502_Run(256-tosprite); |
| 1030 | } |
| 1031 | tosprite=256; |
| 1032 | } |
| 1033 | DoHBlank(); |
| 1034 | } |
| 1035 | #undef harko |
| 1036 | |
| 1037 | void EmLoop(void) |
| 1038 | { |
| 1039 | for(;;) |
| 1040 | { |
| 1041 | ApplyPeriodicCheats(); |
| 1042 | X6502_Run(256+85); |
| 1043 | |
| 1044 | PPU[2]|=0x80; |
| 1045 | PPU[3]=PPUSPL=0; /* Not sure if this is correct. According |
| 1046 | to Matt Conte and my own tests, it is. Timing is probably |
| 1047 | off, though. NOTE: Not having this here |
| 1048 | breaks a Super Donkey Kong game. */ |
| 1049 | |
| 1050 | X6502_Run(12); /* I need to figure out the true nature and length |
| 1051 | of this delay. |
| 1052 | */ |
| 1053 | if(FCEUGameInfo.type==GIT_NSF) |
| 1054 | TriggerNMINSF(); |
| 1055 | else if(VBlankON) |
| 1056 | TriggerNMI(); |
| 1057 | |
| 1058 | X6502_Run((scanlines_per_frame-242)*(256+85)-12); |
| 1059 | |
| 1060 | PPU_status&=0x1f; |
| 1061 | |
| 1062 | X6502_Run(256); |
| 1063 | { |
| 1064 | static int kook=0; |
| 1065 | if(ScreenON || SpriteON) |
| 1066 | if(GameHBIRQHook) |
| 1067 | GameHBIRQHook(); |
| 1068 | |
| 1069 | X6502_Run(85-kook); |
| 1070 | kook=(kook+1)&1; |
| 1071 | } |
| 1072 | |
| 1073 | if(ScreenON || SpriteON) |
| 1074 | { |
| 1075 | RefreshAddr=TempAddr; |
| 1076 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 1077 | } |
| 1078 | if(FCEUGameInfo.type==GIT_NSF) |
| 1079 | X6502_Run((256+85)*240); |
| 1080 | else |
| 1081 | { |
| 1082 | int x,max,maxref; |
| 1083 | |
| 1084 | deemp=PPU[1]>>5; |
| 1085 | for(scanline=0;scanline<240;scanline++) |
| 1086 | { |
| 1087 | deempcnt[deemp]++; |
| 1088 | Thingo(); |
| 1089 | } |
| 1090 | for(x=1,max=0,maxref=0;x<7;x++) |
| 1091 | { |
| 1092 | if(deempcnt[x]>max) |
| 1093 | { |
| 1094 | max=deempcnt[x]; |
| 1095 | maxref=x; |
| 1096 | } |
| 1097 | deempcnt[x]=0; |
| 1098 | } |
| 1099 | //FCEU_DispMessage("%2x:%2x:%2x:%2x:%2x:%2x:%2x:%2x %d",deempcnt[0],deempcnt[1],deempcnt[2],deempcnt[3],deempcnt[4],deempcnt[5],deempcnt[6],deempcnt[7],maxref); |
| 1100 | //memset(deempcnt,0,sizeof(deempcnt)); |
| 1101 | SetNESDeemph(maxref,0); |
| 1102 | } |
| 1103 | |
| 1104 | { |
| 1105 | int ssize; |
| 1106 | |
| 1107 | ssize=FlushEmulateSound(); |
| 1108 | |
| 1109 | #ifdef FRAMESKIP |
| 1110 | if(FSkip) |
| 1111 | { |
| 1112 | FCEU_PutImageDummy(); |
| 1113 | FSkip--; |
| 1114 | FCEUD_Update(0,WaveFinalMono,ssize); |
| 1115 | } |
| 1116 | else |
| 1117 | #endif |
| 1118 | { |
| 1119 | FCEU_PutImage(); |
| 1120 | FCEUD_Update(XBuf+8,WaveFinalMono,ssize); |
| 1121 | } |
| 1122 | UpdateInput(); |
| 1123 | } |
| 1124 | |
| 1125 | if(Exit) |
| 1126 | { |
| 1127 | CloseGame(); |
| 1128 | break; |
| 1129 | } |
| 1130 | |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | #ifdef FPS |
| 1135 | #include <sys/time.h> |
| 1136 | uint64 frcount; |
| 1137 | #endif |
| 1138 | void FCEUI_Emulate(void) |
| 1139 | { |
| 1140 | #ifdef FPS |
| 1141 | uint64 starttime,end; |
| 1142 | struct timeval tv; |
| 1143 | frcount=0; |
| 1144 | gettimeofday(&tv,0); |
| 1145 | starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec; |
| 1146 | #endif |
| 1147 | EmLoop(); |
| 1148 | |
| 1149 | #ifdef FPS |
| 1150 | // Probably won't work well on Windows port; for |
| 1151 | // debugging/speed testing. |
| 1152 | { |
| 1153 | uint64 w; |
| 1154 | int i,frac; |
| 1155 | gettimeofday(&tv,0); |
| 1156 | end=((uint64)tv.tv_sec*1000000)+tv.tv_usec; |
| 1157 | w=frcount*10000000000LL/(end-starttime); |
| 1158 | i=w/10000; |
| 1159 | frac=w-i*10000; |
| 1160 | printf("Average FPS: %d.%04d\n",i,frac); |
| 1161 | } |
| 1162 | #endif |
| 1163 | |
| 1164 | } |
| 1165 | |
| 1166 | void FCEUI_CloseGame(void) |
| 1167 | { |
| 1168 | Exit=1; |
| 1169 | } |
| 1170 | |
| 1171 | static void ResetPPU(void) |
| 1172 | { |
| 1173 | VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0; |
| 1174 | PPUSPL=0; |
| 1175 | PPUGenLatch=0; |
| 1176 | RefreshAddr=TempAddr=0; |
| 1177 | vtoggle = 0; |
| 1178 | } |
| 1179 | |
| 1180 | static void PowerPPU(void) |
| 1181 | { |
| 1182 | memset(NTARAM,0x00,0x800); |
| 1183 | memset(PALRAM,0x00,0x20); |
| 1184 | memset(SPRAM,0x00,0x100); |
| 1185 | ResetPPU(); |
| 1186 | } |
| 1187 | |
| 1188 | void ResetNES(void) |
| 1189 | { |
| 1190 | if(!GameLoaded || (FCEUGameInfo.type==GIT_NSF)) return; |
| 1191 | GameInterface(GI_RESETM2); |
| 1192 | ResetSound(); |
| 1193 | ResetPPU(); |
| 1194 | X6502_Reset(); |
| 1195 | } |
| 1196 | |
| 1197 | void PowerNES(void) |
| 1198 | { |
| 1199 | if(!GameLoaded) return; |
| 1200 | |
| 1201 | FCEU_CheatResetRAM(); |
| 1202 | FCEU_CheatAddRAM(2,0,RAM); |
| 1203 | |
| 1204 | GeniePower(); |
| 1205 | |
| 1206 | memset(RAM,0x00,0x800); |
| 1207 | ResetMapping(); |
| 1208 | GameInterface(GI_POWER); |
| 1209 | PowerSound(); |
| 1210 | PowerPPU(); |
| 1211 | timestampbase=0; |
| 1212 | X6502_Power(); |
| 1213 | } |
| 1214 | |