| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 1998 BERO |
| 5 | * Copyright (C) 2003 Xodnizel |
| 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 | |
| 24 | #include "types.h" |
| 25 | #include "x6502.h" |
| 26 | #include "fce.h" |
| 27 | #include "ppu098.h" |
| 28 | #include "nsf.h" |
| 29 | #include "sound.h" // TODO 098? |
| 30 | #include "memory.h" |
| 31 | |
| 32 | #include "cart.h" |
| 33 | #include "palette.h" |
| 34 | #include "video.h" |
| 35 | #include "input.h" |
| 36 | |
| 37 | #define Pal (PALRAM) |
| 38 | |
| 39 | static void FetchSpriteData098(void); |
| 40 | static void FASTAPASS(1) RefreshLine098(int lastpixel); |
| 41 | static void RefreshSprites098(void); |
| 42 | static void CopySprites098(uint8 *target); |
| 43 | |
| 44 | static void Fixit1(void); |
| 45 | static uint32 ppulut1[256]; |
| 46 | static uint32 ppulut2[256]; |
| 47 | static uint32 ppulut3[128]; |
| 48 | |
| 49 | static void makeppulut(void) |
| 50 | { |
| 51 | int x; |
| 52 | int y; |
| 53 | |
| 54 | for(x=0;x<256;x++) |
| 55 | { |
| 56 | ppulut1[x]=0; |
| 57 | for(y=0;y<8;y++) |
| 58 | ppulut1[x]|=((x>>(7-y))&1)<<(y*4); |
| 59 | ppulut2[x]=ppulut1[x]<<1; |
| 60 | } |
| 61 | |
| 62 | { |
| 63 | |
| 64 | int cc,xo,pixel; |
| 65 | |
| 66 | for(cc=0;cc<16;cc++) |
| 67 | { |
| 68 | for(xo=0;xo<8;xo++) |
| 69 | { |
| 70 | ppulut3[xo|(cc<<3)]=0; |
| 71 | for(pixel=0;pixel<8;pixel++) |
| 72 | { |
| 73 | int shiftr; |
| 74 | shiftr=(pixel+xo)/8; |
| 75 | shiftr*=2; |
| 76 | ppulut3[xo|(cc<<3)]|=(( cc>>shiftr )&3)<<(2+pixel*4); |
| 77 | } |
| 78 | // printf("%08x\n",ppulut3[xo|(cc<<3)]); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | } |
| 83 | } |
| 84 | |
| 85 | // TODO: make this compatible with the new sound code |
| 86 | #ifdef ASM_6502 |
| 87 | static void asmcpu_update(int32 cycles) |
| 88 | { |
| 89 | // some code from x6502.c |
| 90 | fhcnt-=cycles; |
| 91 | if(fhcnt<=0) |
| 92 | { |
| 93 | FrameSoundUpdate(); |
| 94 | fhcnt+=fhinc; |
| 95 | } |
| 96 | |
| 97 | if(PCMIRQCount>0) |
| 98 | { |
| 99 | PCMIRQCount-=cycles; |
| 100 | if(PCMIRQCount<=0) |
| 101 | { |
| 102 | vdis=1; |
| 103 | if((PSG[0x10]&0x80) && !(PSG[0x10]&0x40)) |
| 104 | { |
| 105 | extern uint8 SIRQStat; |
| 106 | SIRQStat|=0x80; |
| 107 | X6502_IRQBegin(FCEU_IQDPCM); |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | } |
| 112 | #endif |
| 113 | |
| 114 | extern int ppudead; |
| 115 | extern int kook; |
| 116 | |
| 117 | /* Color deemphasis emulation. Joy... */ |
| 118 | static uint8 deemp=0; |
| 119 | static int deempcnt[8]; |
| 120 | |
| 121 | extern int maxsprites; |
| 122 | |
| 123 | extern uint8 PPUSPL; |
| 124 | extern uint8 SPRAM[0x100]; |
| 125 | extern uint8 SPRBUF[0x100]; |
| 126 | |
| 127 | |
| 128 | #define MMC5SPRVRAMADR(V) &MMC5SPRVPage[(V)>>10][(V)] |
| 129 | #define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)] |
| 130 | #define VRAMADR(V) &VPage[(V)>>10][(V)] |
| 131 | |
| 132 | |
| 133 | static DECLFR(A2002) |
| 134 | { |
| 135 | uint8 ret; |
| 136 | |
| 137 | FCEUPPU_LineUpdate098(); |
| 138 | ret = PPU_status; |
| 139 | ret|=PPUGenLatch&0x1F; |
| 140 | |
| 141 | { |
| 142 | vtoggle=0; |
| 143 | PPU_status&=0x7F; |
| 144 | PPUGenLatch=ret; |
| 145 | } |
| 146 | return ret; |
| 147 | } |
| 148 | |
| 149 | static DECLFR(A200x) /* Not correct for $2004 reads. */ |
| 150 | { |
| 151 | FCEUPPU_LineUpdate098(); |
| 152 | return PPUGenLatch; |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | static DECLFR(A2004) |
| 157 | { |
| 158 | uint8 ret; |
| 159 | |
| 160 | FCEUPPU_LineUpdate098(); |
| 161 | ret = SPRAM[PPU[3]]; |
| 162 | |
| 163 | if(PPUSPL>=8) |
| 164 | { |
| 165 | if(PPU[3]>=8) |
| 166 | ret = SPRAM[PPU[3]]; |
| 167 | } |
| 168 | else |
| 169 | { |
| 170 | //printf("$%02x:$%02x\n",PPUSPL,V); |
| 171 | ret = SPRAM[PPUSPL]; |
| 172 | } |
| 173 | PPU[3]++; |
| 174 | PPUSPL++; |
| 175 | PPUGenLatch = ret; |
| 176 | printf("%d, %02x\n",scanline,ret); |
| 177 | return(ret); |
| 178 | } |
| 179 | */ |
| 180 | static DECLFR(A2007) |
| 181 | { |
| 182 | uint8 ret; |
| 183 | uint32 tmp=RefreshAddr&0x3FFF; |
| 184 | |
| 185 | FCEUPPU_LineUpdate098(); |
| 186 | |
| 187 | ret=VRAMBuffer; |
| 188 | |
| 189 | { |
| 190 | if(PPU_hook) PPU_hook(tmp); |
| 191 | PPUGenLatch=VRAMBuffer; |
| 192 | if(tmp<0x2000) |
| 193 | { |
| 194 | VRAMBuffer=VPage[tmp>>10][tmp]; |
| 195 | } |
| 196 | else |
| 197 | { |
| 198 | VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF]; |
| 199 | } |
| 200 | } |
| 201 | { |
| 202 | if(INC32) RefreshAddr+=32; |
| 203 | else RefreshAddr++; |
| 204 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 205 | } |
| 206 | return ret; |
| 207 | } |
| 208 | |
| 209 | static DECLFW(B2000) |
| 210 | { |
| 211 | // FCEU_printf("%04x:%02x, (%d) %02x, %02x\n",A,V,scanline,PPU[0],PPU_status); |
| 212 | |
| 213 | FCEUPPU_LineUpdate098(); |
| 214 | PPUGenLatch=V; |
| 215 | if(!(PPU[0]&0x80) && (V&0x80) && (PPU_status&0x80)) |
| 216 | { |
| 217 | // FCEU_printf("Trigger NMI, %d, %d\n",timestamp,ppudead); |
| 218 | // TriggerNMI2(); |
| 219 | TriggerNMI(); |
| 220 | } |
| 221 | PPU[0]=V; |
| 222 | TempAddr&=0xF3FF; |
| 223 | TempAddr|=(V&3)<<10; |
| 224 | } |
| 225 | |
| 226 | static DECLFW(B2001) |
| 227 | { |
| 228 | //printf("%04x:$%02x, %d\n",A,V,scanline); |
| 229 | FCEUPPU_LineUpdate098(); |
| 230 | PPUGenLatch=V; |
| 231 | PPU[1]=V; |
| 232 | if(V&0xE0) |
| 233 | deemp=V>>5; |
| 234 | } |
| 235 | |
| 236 | static DECLFW(B2002) |
| 237 | { |
| 238 | PPUGenLatch=V; |
| 239 | } |
| 240 | |
| 241 | static DECLFW(B2003) |
| 242 | { |
| 243 | //printf("$%04x:$%02x, %d, %d\n",A,V,timestamp,scanline); |
| 244 | PPUGenLatch=V; |
| 245 | PPU[3]=V; |
| 246 | PPUSPL=V&0x7; |
| 247 | } |
| 248 | |
| 249 | static DECLFW(B2004) |
| 250 | { |
| 251 | //printf("Wr: %04x:$%02x\n",A,V); |
| 252 | |
| 253 | PPUGenLatch=V; |
| 254 | if(PPUSPL>=8) |
| 255 | { |
| 256 | if(PPU[3]>=8) |
| 257 | SPRAM[PPU[3]]=V; |
| 258 | } |
| 259 | else |
| 260 | { |
| 261 | //printf("$%02x:$%02x\n",PPUSPL,V); |
| 262 | SPRAM[PPUSPL]=V; |
| 263 | } |
| 264 | PPU[3]++; |
| 265 | PPUSPL++; |
| 266 | |
| 267 | } |
| 268 | |
| 269 | static DECLFW(B2005) |
| 270 | { |
| 271 | uint32 tmp=TempAddr; |
| 272 | FCEUPPU_LineUpdate098(); |
| 273 | PPUGenLatch=V; |
| 274 | if(!vtoggle) |
| 275 | { |
| 276 | tmp&=0xFFE0; |
| 277 | tmp|=V>>3; |
| 278 | XOffset=V&7; |
| 279 | } |
| 280 | else |
| 281 | { |
| 282 | tmp&=0x8C1F; |
| 283 | tmp|=((V&~0x7)<<2); |
| 284 | tmp|=(V&7)<<12; |
| 285 | } |
| 286 | TempAddr=tmp; |
| 287 | vtoggle^=1; |
| 288 | } |
| 289 | |
| 290 | |
| 291 | static DECLFW(B2006) |
| 292 | { |
| 293 | FCEUPPU_LineUpdate098(); |
| 294 | |
| 295 | PPUGenLatch=V; |
| 296 | if(!vtoggle) |
| 297 | { |
| 298 | TempAddr&=0x00FF; |
| 299 | TempAddr|=(V&0x3f)<<8; |
| 300 | } |
| 301 | else |
| 302 | { |
| 303 | TempAddr&=0xFF00; |
| 304 | TempAddr|=V; |
| 305 | |
| 306 | RefreshAddr=TempAddr; |
| 307 | if(PPU_hook) |
| 308 | PPU_hook(RefreshAddr); |
| 309 | //printf("%d, %04x\n",scanline,RefreshAddr); |
| 310 | } |
| 311 | vtoggle^=1; |
| 312 | } |
| 313 | |
| 314 | static DECLFW(B2007) |
| 315 | { |
| 316 | uint32 tmp=RefreshAddr&0x3FFF; |
| 317 | PPUGenLatch=V; |
| 318 | if(tmp>=0x3F00) |
| 319 | { |
| 320 | // hmmm.... |
| 321 | if(!(tmp&0xf)) |
| 322 | PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3F; |
| 323 | else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f; |
| 324 | } |
| 325 | else if(tmp<0x2000) |
| 326 | { |
| 327 | if(PPUCHRRAM&(1<<(tmp>>10))) |
| 328 | VPage[tmp>>10][tmp]=V; |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | if(PPUNTARAM&(1<<((tmp&0xF00)>>10))) |
| 333 | vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V; |
| 334 | } |
| 335 | // FCEU_printf("ppu (%04x) %04x:%04x %d, %d\n",X.PC,RefreshAddr,PPUGenLatch,scanline,timestamp); |
| 336 | if(INC32) RefreshAddr+=32; |
| 337 | else RefreshAddr++; |
| 338 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 339 | } |
| 340 | |
| 341 | static DECLFW(B4014) |
| 342 | { |
| 343 | uint32 t=V<<8; |
| 344 | int x; |
| 345 | |
| 346 | //for(x=0;x<256;x++) |
| 347 | // X6502_DMW(0x2004,X6502_DMR(t+x)); |
| 348 | for(x=0;x<256;x++) |
| 349 | B2004(0x2004,X.DB=ARead[t+x](t+x)); |
| 350 | X6502_AddCycles(512); |
| 351 | } |
| 352 | |
| 353 | #define PAL(c) ((c)+cc) |
| 354 | |
| 355 | #define GETLASTPIXEL (PAL?((timestamp*48-linestartts)/15) : ((timestamp*48-linestartts)>>4) ) |
| 356 | |
| 357 | static uint8 *Pline=0,*Plinef; |
| 358 | static int firsttile; |
| 359 | static int linestartts; |
| 360 | static int tofix=0; |
| 361 | |
| 362 | static void ResetRL(uint8 *target) |
| 363 | { |
| 364 | memset(target,0xFF,256); |
| 365 | if(InputScanlineHook) |
| 366 | InputScanlineHook(0,0,0,0); |
| 367 | Plinef=target; |
| 368 | Pline=target; |
| 369 | firsttile=0; |
| 370 | linestartts=timestamp*48+X.count; |
| 371 | tofix=0; |
| 372 | FCEUPPU_LineUpdate098(); |
| 373 | tofix=1; |
| 374 | } |
| 375 | |
| 376 | extern uint8 sprlinebuf[256+8]; |
| 377 | |
| 378 | void FCEUPPU_LineUpdate098(void) |
| 379 | { |
| 380 | if(Pline) |
| 381 | { |
| 382 | int l=GETLASTPIXEL; |
| 383 | RefreshLine098(l); |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | static int rendis = 0; |
| 388 | |
| 389 | void FCEUI_SetRenderDisable(int sprites, int bg) |
| 390 | { |
| 391 | //printf("%d, %d\n",sprites,bg); |
| 392 | if(sprites >= 0) |
| 393 | { |
| 394 | if(sprites == 2) rendis ^= 1; |
| 395 | else rendis = (rendis &~1) | sprites?1:0; |
| 396 | } |
| 397 | if(bg >= 0) |
| 398 | { |
| 399 | if(bg == 2) rendis ^= 2; |
| 400 | else rendis = (rendis &~2) | bg?2:0; |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | static void CheckSpriteHit(int p); |
| 405 | |
| 406 | static void EndRL(void) |
| 407 | { |
| 408 | RefreshLine098(272); |
| 409 | if(tofix) |
| 410 | Fixit1(); |
| 411 | CheckSpriteHit(272); |
| 412 | Pline=0; |
| 413 | } |
| 414 | |
| 415 | static int32 sphitx; |
| 416 | static uint8 sphitdata; |
| 417 | |
| 418 | static void CheckSpriteHit(int p) |
| 419 | { |
| 420 | int l=p-16; |
| 421 | int x; |
| 422 | |
| 423 | if(sphitx==0x100) return; |
| 424 | |
| 425 | for(x=sphitx;x<(sphitx+8) && x<l;x++) |
| 426 | { |
| 427 | if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64)) |
| 428 | { |
| 429 | PPU_status|=0x40; |
| 430 | //printf("Ha: %d, %d, Hita: %d, %d, %d, %d, %d\n",p,p&~7,scanline,GETLASTPIXEL-16,&Plinef[x],Pline,Pline-Plinef); |
| 431 | //printf("%d\n",GETLASTPIXEL-16); |
| 432 | //if(Plinef[x] == 0xFF) |
| 433 | //printf("PL: %d, %02x\n",scanline, Plinef[x]); |
| 434 | sphitx=0x100; |
| 435 | break; |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | static int spork=0; /* spork the world. Any sprites on this line? |
| 440 | Then this will be set to 1. Needed for zapper |
| 441 | emulation and *gasp* sprite emulation. |
| 442 | */ |
| 443 | |
| 444 | // lasttile is really "second to last tile." |
| 445 | static void FASTAPASS(1) RefreshLine098(int lastpixel) |
| 446 | { |
| 447 | static uint32 pshift[2]; |
| 448 | static uint32 atlatch; |
| 449 | uint32 smorkus=RefreshAddr; |
| 450 | |
| 451 | #define RefreshAddr smorkus |
| 452 | uint32 vofs; |
| 453 | int X1; |
| 454 | |
| 455 | register uint8 *P=Pline; |
| 456 | int lasttile=lastpixel>>3; |
| 457 | int numtiles; |
| 458 | static int norecurse=0; /* Yeah, recursion would be bad. |
| 459 | PPU_hook() functions can call |
| 460 | mirroring/chr bank switching functions, |
| 461 | which call FCEUPPU_LineUpdate, which call this |
| 462 | function. */ |
| 463 | if(norecurse) return; |
| 464 | |
| 465 | if(sphitx != 0x100 && !(PPU_status&0x40)) |
| 466 | { |
| 467 | if((sphitx < (lastpixel-16)) && !(sphitx < ((lasttile - 2)*8))) |
| 468 | { |
| 469 | //printf("OK: %d\n",scanline); |
| 470 | lasttile++; |
| 471 | } |
| 472 | |
| 473 | } |
| 474 | |
| 475 | if(lasttile>34) lasttile=34; |
| 476 | numtiles=lasttile-firsttile; |
| 477 | |
| 478 | if(numtiles<=0) return; |
| 479 | |
| 480 | P=Pline; |
| 481 | |
| 482 | vofs=0; |
| 483 | |
| 484 | vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7); |
| 485 | |
| 486 | if(!ScreenON && !SpriteON) |
| 487 | { |
| 488 | uint32 tem; |
| 489 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 490 | tem|=0x40404040; |
| 491 | FCEU_dwmemset(Pline,tem,numtiles*8); |
| 492 | P+=numtiles*8; |
| 493 | Pline=P; |
| 494 | |
| 495 | firsttile=lasttile; |
| 496 | |
| 497 | #define TOFIXNUM (272-0x4) |
| 498 | if(lastpixel>=TOFIXNUM && tofix) |
| 499 | { |
| 500 | Fixit1(); |
| 501 | tofix=0; |
| 502 | } |
| 503 | |
| 504 | if(InputScanlineHook && (lastpixel-16)>=0) |
| 505 | { |
| 506 | InputScanlineHook(Plinef,spork?sprlinebuf:0,linestartts,lasttile*8-16); |
| 507 | } |
| 508 | return; |
| 509 | } |
| 510 | |
| 511 | /* Priority bits, needed for sprite emulation. */ |
| 512 | Pal[0]|=64; |
| 513 | Pal[4]|=64; |
| 514 | Pal[8]|=64; |
| 515 | Pal[0xC]|=64; |
| 516 | |
| 517 | /* This high-level graphics MMC5 emulation code was written |
| 518 | for MMC5 carts in "CL" mode. It's probably not totally |
| 519 | correct for carts in "SL" mode. |
| 520 | */ |
| 521 | |
| 522 | #define PPUT_MMC5 |
| 523 | if(MMC5Hack && geniestage!=1) |
| 524 | { |
| 525 | if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80)) |
| 526 | { |
| 527 | int tochange=MMC5HackSPMode&0x1F; |
| 528 | tochange-=firsttile; |
| 529 | for(X1=firsttile;X1<lasttile;X1++) |
| 530 | { |
| 531 | if((tochange<=0 && MMC5HackSPMode&0x40) || (tochange>0 && !(MMC5HackSPMode&0x40))) |
| 532 | { |
| 533 | #define PPUT_MMC5SP |
| 534 | #include "pputile098.h" |
| 535 | #undef PPUT_MMC5SP |
| 536 | } |
| 537 | else |
| 538 | { |
| 539 | #include "pputile098.h" |
| 540 | } |
| 541 | tochange--; |
| 542 | } |
| 543 | } |
| 544 | else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80)) |
| 545 | { |
| 546 | int tochange=MMC5HackSPMode&0x1F; |
| 547 | tochange-=firsttile; |
| 548 | |
| 549 | #define PPUT_MMC5SP |
| 550 | #define PPUT_MMC5CHR1 |
| 551 | for(X1=firsttile;X1<lasttile;X1++) |
| 552 | { |
| 553 | #include "pputile098.h" |
| 554 | } |
| 555 | #undef PPUT_MMC5CHR1 |
| 556 | #undef PPUT_MMC5SP |
| 557 | } |
| 558 | else if(MMC5HackCHRMode==1) |
| 559 | { |
| 560 | #define PPUT_MMC5CHR1 |
| 561 | for(X1=firsttile;X1<lasttile;X1++) |
| 562 | { |
| 563 | #include "pputile098.h" |
| 564 | } |
| 565 | #undef PPUT_MMC5CHR1 |
| 566 | } |
| 567 | else |
| 568 | { |
| 569 | for(X1=firsttile;X1<lasttile;X1++) |
| 570 | { |
| 571 | #include "pputile098.h" |
| 572 | } |
| 573 | } |
| 574 | } |
| 575 | #undef PPUT_MMC5 |
| 576 | else if(PPU_hook) |
| 577 | { |
| 578 | norecurse=1; |
| 579 | #define PPUT_HOOK |
| 580 | for(X1=firsttile;X1<lasttile;X1++) |
| 581 | { |
| 582 | #include "pputile098.h" |
| 583 | } |
| 584 | #undef PPUT_HOOK |
| 585 | norecurse=0; |
| 586 | } |
| 587 | else |
| 588 | { |
| 589 | for(X1=firsttile;X1<lasttile;X1++) |
| 590 | { |
| 591 | #include "pputile098.h" |
| 592 | } |
| 593 | } |
| 594 | |
| 595 | #undef vofs |
| 596 | #undef RefreshAddr |
| 597 | |
| 598 | /* Reverse changes made before. */ |
| 599 | Pal[0]&=63; |
| 600 | Pal[4]&=63; |
| 601 | Pal[8]&=63; |
| 602 | Pal[0xC]&=63; |
| 603 | |
| 604 | RefreshAddr=smorkus; |
| 605 | if(firsttile<=2 && 2<lasttile && !(PPU[1]&2)) |
| 606 | { |
| 607 | uint32 tem; |
| 608 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 609 | tem|=0x40404040; |
| 610 | *(uint32 *)Plinef=*(uint32 *)(Plinef+4)=tem; |
| 611 | } |
| 612 | |
| 613 | if(!ScreenON) |
| 614 | { |
| 615 | uint32 tem; |
| 616 | int tstart,tcount; |
| 617 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 618 | tem|=0x40404040; |
| 619 | |
| 620 | tcount=lasttile-firsttile; |
| 621 | tstart=firsttile-2; |
| 622 | if(tstart<0) |
| 623 | { |
| 624 | tcount+=tstart; |
| 625 | tstart=0; |
| 626 | } |
| 627 | if(tcount>0) |
| 628 | FCEU_dwmemset(Plinef+tstart*8,tem,tcount*8); |
| 629 | } |
| 630 | |
| 631 | if(lastpixel>=TOFIXNUM && tofix) |
| 632 | { |
| 633 | //puts("Fixed"); |
| 634 | Fixit1(); |
| 635 | tofix=0; |
| 636 | } |
| 637 | |
| 638 | //CheckSpriteHit(lasttile*8); //lasttile*8); //lastpixel); |
| 639 | |
| 640 | CheckSpriteHit(lastpixel); /* This only works right because |
| 641 | of a hack earlier in this function. |
| 642 | */ |
| 643 | if(InputScanlineHook && (lastpixel-16)>=0) |
| 644 | { |
| 645 | InputScanlineHook(Plinef,spork?sprlinebuf:0,linestartts,lasttile*8-16); |
| 646 | } |
| 647 | Pline=P; |
| 648 | firsttile=lasttile; |
| 649 | } |
| 650 | |
| 651 | static INLINE void Fixit2(void) |
| 652 | { |
| 653 | if(ScreenON || SpriteON) |
| 654 | { |
| 655 | uint32 rad=RefreshAddr; |
| 656 | rad&=0xFBE0; |
| 657 | rad|=TempAddr&0x041f; |
| 658 | RefreshAddr=rad; |
| 659 | //PPU_hook(RefreshAddr); |
| 660 | //PPU_hook(RefreshAddr,-1); |
| 661 | } |
| 662 | } |
| 663 | |
| 664 | static void Fixit1(void) |
| 665 | { |
| 666 | if(ScreenON || SpriteON) |
| 667 | { |
| 668 | uint32 rad=RefreshAddr; |
| 669 | |
| 670 | if((rad&0x7000)==0x7000) |
| 671 | { |
| 672 | rad^=0x7000; |
| 673 | if((rad&0x3E0)==0x3A0) |
| 674 | { |
| 675 | rad^=0x3A0; |
| 676 | rad^=0x800; |
| 677 | } |
| 678 | else |
| 679 | { |
| 680 | if((rad&0x3E0)==0x3e0) |
| 681 | rad^=0x3e0; |
| 682 | else rad+=0x20; |
| 683 | } |
| 684 | } |
| 685 | else |
| 686 | rad+=0x1000; |
| 687 | RefreshAddr=rad; |
| 688 | //PPU_hook(RefreshAddr); //,-1); |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | void MMC5_hb(int); /* Ugh ugh ugh. */ |
| 693 | static void DoLine(void) |
| 694 | { |
| 695 | int x; |
| 696 | uint8 *target=XBuf+scanline*320+32; |
| 697 | |
| 698 | if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline); |
| 699 | |
| 700 | X6502_Run(256); |
| 701 | EndRL(); |
| 702 | |
| 703 | if(rendis & 2) /* User asked to not display background data. */ |
| 704 | { |
| 705 | uint32 tem; |
| 706 | tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24); |
| 707 | tem|=0x40404040; |
| 708 | FCEU_dwmemset(target,tem,256); |
| 709 | } |
| 710 | |
| 711 | if(SpriteON) |
| 712 | CopySprites098(target); |
| 713 | |
| 714 | if(ScreenON || SpriteON) // Yes, very el-cheapo. |
| 715 | { |
| 716 | if(PPU[1]&0x01) |
| 717 | { |
| 718 | for(x=63;x>=0;x--) |
| 719 | *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030; |
| 720 | } |
| 721 | } |
| 722 | if((PPU[1]>>5)==0x7) |
| 723 | { |
| 724 | for(x=63;x>=0;x--) |
| 725 | *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0; |
| 726 | } |
| 727 | else if(PPU[1]&0xE0) |
| 728 | for(x=63;x>=0;x--) |
| 729 | *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040; |
| 730 | else |
| 731 | for(x=63;x>=0;x--) |
| 732 | *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080; |
| 733 | |
| 734 | sphitx=0x100; |
| 735 | |
| 736 | if(ScreenON || SpriteON) |
| 737 | FetchSpriteData098(); |
| 738 | |
| 739 | if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18)) |
| 740 | { |
| 741 | X6502_Run(6); |
| 742 | Fixit2(); |
| 743 | X6502_Run(4); |
| 744 | GameHBIRQHook(); |
| 745 | X6502_Run(85-16-10); |
| 746 | } |
| 747 | else |
| 748 | { |
| 749 | X6502_Run(6); // Tried 65, caused problems with Slalom(maybe others) |
| 750 | Fixit2(); |
| 751 | X6502_Run(85-6-16); |
| 752 | |
| 753 | // A semi-hack for Star Trek: 25th Anniversary |
| 754 | if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18)) |
| 755 | GameHBIRQHook(); |
| 756 | } |
| 757 | |
| 758 | if(SpriteON) |
| 759 | RefreshSprites098(); |
| 760 | if(GameHBIRQHook2 && (ScreenON || SpriteON)) |
| 761 | GameHBIRQHook2(); |
| 762 | scanline++; |
| 763 | if(scanline<240) |
| 764 | { |
| 765 | ResetRL(XBuf+scanline*320+32); |
| 766 | } |
| 767 | X6502_Run(16); |
| 768 | } |
| 769 | |
| 770 | #define V_FLIP 0x80 |
| 771 | #define H_FLIP 0x40 |
| 772 | #define SP_BACK 0x20 |
| 773 | |
| 774 | typedef struct { |
| 775 | uint8 y,no,atr,x; |
| 776 | } SPR; |
| 777 | |
| 778 | typedef struct { |
| 779 | uint8 ca[2],atr,x; |
| 780 | } SPRB; |
| 781 | |
| 782 | static uint8 numsprites,SpriteBlurp; |
| 783 | static void FetchSpriteData098(void) |
| 784 | { |
| 785 | uint8 ns,sb; |
| 786 | SPR *spr; |
| 787 | uint8 H; |
| 788 | int n; |
| 789 | int vofs; |
| 790 | uint8 P0=PPU[0]; |
| 791 | |
| 792 | spr=(SPR *)SPRAM; |
| 793 | H=8; |
| 794 | |
| 795 | ns=sb=0; |
| 796 | |
| 797 | vofs=(unsigned int)(P0&0x8&(((P0&0x20)^0x20)>>2))<<9; |
| 798 | H+=(P0&0x20)>>2; |
| 799 | |
| 800 | if(!PPU_hook) |
| 801 | for(n=63;n>=0;n--,spr++) |
| 802 | { |
| 803 | if((unsigned int)(scanline-spr->y)>=H) continue; |
| 804 | //printf("%d, %u\n",scanline,(unsigned int)(scanline-spr->y)); |
| 805 | if(ns<maxsprites) |
| 806 | { |
| 807 | if(n==63) sb=1; |
| 808 | |
| 809 | { |
| 810 | SPRB dst; |
| 811 | uint8 *C; |
| 812 | int t; |
| 813 | unsigned int vadr; |
| 814 | |
| 815 | t = (int)scanline-(spr->y); |
| 816 | |
| 817 | if(Sprite16) |
| 818 | vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4); |
| 819 | else |
| 820 | vadr = (spr->no<<4)+vofs; |
| 821 | |
| 822 | if(spr->atr&V_FLIP) |
| 823 | { |
| 824 | vadr+=7; |
| 825 | vadr-=t; |
| 826 | vadr+=(P0&0x20)>>1; |
| 827 | vadr-=t&8; |
| 828 | } |
| 829 | else |
| 830 | { |
| 831 | vadr+=t; |
| 832 | vadr+=t&8; |
| 833 | } |
| 834 | |
| 835 | /* Fix this geniestage hack */ |
| 836 | if(MMC5Hack && geniestage!=1) C = MMC5SPRVRAMADR(vadr); |
| 837 | else C = VRAMADR(vadr); |
| 838 | |
| 839 | |
| 840 | dst.ca[0]=C[0]; |
| 841 | dst.ca[1]=C[8]; |
| 842 | dst.x=spr->x; |
| 843 | dst.atr=spr->atr; |
| 844 | |
| 845 | *(uint32 *)&SPRBUF[ns<<2]=*(uint32 *)&dst; |
| 846 | } |
| 847 | |
| 848 | ns++; |
| 849 | } |
| 850 | else |
| 851 | { |
| 852 | PPU_status|=0x20; |
| 853 | break; |
| 854 | } |
| 855 | } |
| 856 | else |
| 857 | for(n=63;n>=0;n--,spr++) |
| 858 | { |
| 859 | if((unsigned int)(scanline-spr->y)>=H) continue; |
| 860 | |
| 861 | if(ns<maxsprites) |
| 862 | { |
| 863 | if(n==63) sb=1; |
| 864 | |
| 865 | { |
| 866 | SPRB dst; |
| 867 | uint8 *C; |
| 868 | int t; |
| 869 | unsigned int vadr; |
| 870 | |
| 871 | t = (int)scanline-(spr->y); |
| 872 | |
| 873 | if(Sprite16) |
| 874 | vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4); |
| 875 | else |
| 876 | vadr = (spr->no<<4)+vofs; |
| 877 | |
| 878 | if(spr->atr&V_FLIP) |
| 879 | { |
| 880 | vadr+=7; |
| 881 | vadr-=t; |
| 882 | vadr+=(P0&0x20)>>1; |
| 883 | vadr-=t&8; |
| 884 | } |
| 885 | else |
| 886 | { |
| 887 | vadr+=t; |
| 888 | vadr+=t&8; |
| 889 | } |
| 890 | |
| 891 | if(MMC5Hack) C = MMC5SPRVRAMADR(vadr); |
| 892 | else C = VRAMADR(vadr); |
| 893 | dst.ca[0]=C[0]; |
| 894 | if(ns<8) |
| 895 | { |
| 896 | PPU_hook(0x2000); |
| 897 | PPU_hook(vadr); |
| 898 | } |
| 899 | dst.ca[1]=C[8]; |
| 900 | dst.x=spr->x; |
| 901 | dst.atr=spr->atr; |
| 902 | |
| 903 | |
| 904 | *(uint32 *)&SPRBUF[ns<<2]=*(uint32 *)&dst; |
| 905 | } |
| 906 | |
| 907 | ns++; |
| 908 | } |
| 909 | else |
| 910 | { |
| 911 | PPU_status|=0x20; |
| 912 | break; |
| 913 | } |
| 914 | } |
| 915 | //if(ns>=7) |
| 916 | //printf("%d %d\n",scanline,ns); |
| 917 | if(ns>8) PPU_status|=0x20; /* Handle case when >8 sprites per |
| 918 | scanline option is enabled. */ |
| 919 | else if(PPU_hook) |
| 920 | { |
| 921 | for(n=0;n<(8-ns);n++) |
| 922 | { |
| 923 | PPU_hook(0x2000); |
| 924 | PPU_hook(vofs); |
| 925 | } |
| 926 | } |
| 927 | numsprites=ns; |
| 928 | SpriteBlurp=sb; |
| 929 | } |
| 930 | |
| 931 | static void RefreshSprites098(void) |
| 932 | { |
| 933 | int n; |
| 934 | SPRB *spr; |
| 935 | |
| 936 | spork=0; |
| 937 | if(!numsprites) return; |
| 938 | |
| 939 | FCEU_dwmemset(sprlinebuf,0x80808080,256); |
| 940 | numsprites--; |
| 941 | spr = (SPRB*)SPRBUF+numsprites; |
| 942 | |
| 943 | for(n=numsprites;n>=0;n--,spr--) |
| 944 | { |
| 945 | //#ifdef C80x86 |
| 946 | //register uint32 pixdata asm ("eax"); |
| 947 | //register uint8 J, atr; |
| 948 | //#else |
| 949 | register uint32 pixdata; |
| 950 | register uint8 J,atr; |
| 951 | //#endif |
| 952 | |
| 953 | int x=spr->x; |
| 954 | uint8 *C; |
| 955 | uint8 *VB; |
| 956 | |
| 957 | pixdata=ppulut1[spr->ca[0]]|ppulut2[spr->ca[1]]; |
| 958 | J=spr->ca[0]|spr->ca[1]; |
| 959 | atr=spr->atr; |
| 960 | |
| 961 | if(J) |
| 962 | { |
| 963 | if(n==0 && SpriteBlurp && !(PPU_status&0x40)) |
| 964 | { |
| 965 | sphitx=x; |
| 966 | sphitdata=J; |
| 967 | if(atr&H_FLIP) |
| 968 | sphitdata= ((J<<7)&0x80) | |
| 969 | ((J<<5)&0x40) | |
| 970 | ((J<<3)&0x20) | |
| 971 | ((J<<1)&0x10) | |
| 972 | ((J>>1)&0x08) | |
| 973 | ((J>>3)&0x04) | |
| 974 | ((J>>5)&0x02) | |
| 975 | ((J>>7)&0x01); |
| 976 | } |
| 977 | |
| 978 | C = sprlinebuf+x; |
| 979 | VB = (PALRAM+0x10)+((atr&3)<<2); |
| 980 | |
| 981 | if(atr&SP_BACK) |
| 982 | { |
| 983 | if(atr&H_FLIP) |
| 984 | { |
| 985 | if(J&0x80) C[7]=VB[pixdata&3]|0x40; |
| 986 | pixdata>>=4; |
| 987 | if(J&0x40) C[6]=VB[pixdata&3]|0x40; |
| 988 | pixdata>>=4; |
| 989 | if(J&0x20) C[5]=VB[pixdata&3]|0x40; |
| 990 | pixdata>>=4; |
| 991 | if(J&0x10) C[4]=VB[pixdata&3]|0x40; |
| 992 | pixdata>>=4; |
| 993 | if(J&0x08) C[3]=VB[pixdata&3]|0x40; |
| 994 | pixdata>>=4; |
| 995 | if(J&0x04) C[2]=VB[pixdata&3]|0x40; |
| 996 | pixdata>>=4; |
| 997 | if(J&0x02) C[1]=VB[pixdata&3]|0x40; |
| 998 | pixdata>>=4; |
| 999 | if(J&0x01) C[0]=VB[pixdata]|0x40; |
| 1000 | } else { |
| 1001 | if(J&0x80) C[0]=VB[pixdata&3]|0x40; |
| 1002 | pixdata>>=4; |
| 1003 | if(J&0x40) C[1]=VB[pixdata&3]|0x40; |
| 1004 | pixdata>>=4; |
| 1005 | if(J&0x20) C[2]=VB[pixdata&3]|0x40; |
| 1006 | pixdata>>=4; |
| 1007 | if(J&0x10) C[3]=VB[pixdata&3]|0x40; |
| 1008 | pixdata>>=4; |
| 1009 | if(J&0x08) C[4]=VB[pixdata&3]|0x40; |
| 1010 | pixdata>>=4; |
| 1011 | if(J&0x04) C[5]=VB[pixdata&3]|0x40; |
| 1012 | pixdata>>=4; |
| 1013 | if(J&0x02) C[6]=VB[pixdata&3]|0x40; |
| 1014 | pixdata>>=4; |
| 1015 | if(J&0x01) C[7]=VB[pixdata]|0x40; |
| 1016 | } |
| 1017 | } else { |
| 1018 | if(atr&H_FLIP) |
| 1019 | { |
| 1020 | if(J&0x80) C[7]=VB[pixdata&3]; |
| 1021 | pixdata>>=4; |
| 1022 | if(J&0x40) C[6]=VB[pixdata&3]; |
| 1023 | pixdata>>=4; |
| 1024 | if(J&0x20) C[5]=VB[pixdata&3]; |
| 1025 | pixdata>>=4; |
| 1026 | if(J&0x10) C[4]=VB[pixdata&3]; |
| 1027 | pixdata>>=4; |
| 1028 | if(J&0x08) C[3]=VB[pixdata&3]; |
| 1029 | pixdata>>=4; |
| 1030 | if(J&0x04) C[2]=VB[pixdata&3]; |
| 1031 | pixdata>>=4; |
| 1032 | if(J&0x02) C[1]=VB[pixdata&3]; |
| 1033 | pixdata>>=4; |
| 1034 | if(J&0x01) C[0]=VB[pixdata]; |
| 1035 | }else{ |
| 1036 | if(J&0x80) C[0]=VB[pixdata&3]; |
| 1037 | pixdata>>=4; |
| 1038 | if(J&0x40) C[1]=VB[pixdata&3]; |
| 1039 | pixdata>>=4; |
| 1040 | if(J&0x20) C[2]=VB[pixdata&3]; |
| 1041 | pixdata>>=4; |
| 1042 | if(J&0x10) C[3]=VB[pixdata&3]; |
| 1043 | pixdata>>=4; |
| 1044 | if(J&0x08) C[4]=VB[pixdata&3]; |
| 1045 | pixdata>>=4; |
| 1046 | if(J&0x04) C[5]=VB[pixdata&3]; |
| 1047 | pixdata>>=4; |
| 1048 | if(J&0x02) C[6]=VB[pixdata&3]; |
| 1049 | pixdata>>=4; |
| 1050 | if(J&0x01) C[7]=VB[pixdata]; |
| 1051 | } |
| 1052 | } |
| 1053 | } |
| 1054 | } |
| 1055 | SpriteBlurp=0; |
| 1056 | spork=1; |
| 1057 | } |
| 1058 | |
| 1059 | static void CopySprites098(uint8 *target) |
| 1060 | { |
| 1061 | uint8 n=((PPU[1]&4)^4)<<1; |
| 1062 | uint8 *P=target; |
| 1063 | |
| 1064 | if(!spork) return; |
| 1065 | spork=0; |
| 1066 | |
| 1067 | if(rendis & 1) return; /* User asked to not display sprites. */ |
| 1068 | |
| 1069 | loopskie: |
| 1070 | { |
| 1071 | uint32 t=*(uint32 *)(sprlinebuf+n); |
| 1072 | |
| 1073 | if(t!=0x80808080) |
| 1074 | { |
| 1075 | #ifdef LSB_FIRST |
| 1076 | if(!(t&0x80)) |
| 1077 | { |
| 1078 | if(!(t&0x40) || (P[n]&0x40)) // Normal sprite || behind bg sprite |
| 1079 | P[n]=sprlinebuf[n]; |
| 1080 | } |
| 1081 | |
| 1082 | if(!(t&0x8000)) |
| 1083 | { |
| 1084 | if(!(t&0x4000) || (P[n+1]&0x40)) // Normal sprite || behind bg sprite |
| 1085 | P[n+1]=(sprlinebuf+1)[n]; |
| 1086 | } |
| 1087 | |
| 1088 | if(!(t&0x800000)) |
| 1089 | { |
| 1090 | if(!(t&0x400000) || (P[n+2]&0x40)) // Normal sprite || behind bg sprite |
| 1091 | P[n+2]=(sprlinebuf+2)[n]; |
| 1092 | } |
| 1093 | |
| 1094 | if(!(t&0x80000000)) |
| 1095 | { |
| 1096 | if(!(t&0x40000000) || (P[n+3]&0x40)) // Normal sprite || behind bg sprite |
| 1097 | P[n+3]=(sprlinebuf+3)[n]; |
| 1098 | } |
| 1099 | #else |
| 1100 | /* TODO: Simplify */ |
| 1101 | if(!(t&0x80000000)) |
| 1102 | { |
| 1103 | if(!(t&0x40000000)) // Normal sprite |
| 1104 | P[n]=sprlinebuf[n]; |
| 1105 | else if(P[n]&64) // behind bg sprite |
| 1106 | P[n]=sprlinebuf[n]; |
| 1107 | } |
| 1108 | |
| 1109 | if(!(t&0x800000)) |
| 1110 | { |
| 1111 | if(!(t&0x400000)) // Normal sprite |
| 1112 | P[n+1]=(sprlinebuf+1)[n]; |
| 1113 | else if(P[n+1]&64) // behind bg sprite |
| 1114 | P[n+1]=(sprlinebuf+1)[n]; |
| 1115 | } |
| 1116 | |
| 1117 | if(!(t&0x8000)) |
| 1118 | { |
| 1119 | if(!(t&0x4000)) // Normal sprite |
| 1120 | P[n+2]=(sprlinebuf+2)[n]; |
| 1121 | else if(P[n+2]&64) // behind bg sprite |
| 1122 | P[n+2]=(sprlinebuf+2)[n]; |
| 1123 | } |
| 1124 | |
| 1125 | if(!(t&0x80)) |
| 1126 | { |
| 1127 | if(!(t&0x40)) // Normal sprite |
| 1128 | P[n+3]=(sprlinebuf+3)[n]; |
| 1129 | else if(P[n+3]&64) // behind bg sprite |
| 1130 | P[n+3]=(sprlinebuf+3)[n]; |
| 1131 | } |
| 1132 | #endif |
| 1133 | } |
| 1134 | } |
| 1135 | n+=4; |
| 1136 | if(n) goto loopskie; |
| 1137 | } |
| 1138 | |
| 1139 | void FCEUPPU_Init(void) |
| 1140 | { |
| 1141 | makeppulut(); |
| 1142 | } |
| 1143 | |
| 1144 | void FCEUPPU_Reset(void) |
| 1145 | { |
| 1146 | VRAMBuffer=PPU[0]=PPU[1]=PPU_status=PPU[3]=0; |
| 1147 | PPUSPL=0; |
| 1148 | PPUGenLatch=0; |
| 1149 | RefreshAddr=TempAddr=0; |
| 1150 | vtoggle = 0; |
| 1151 | ppudead = 2; |
| 1152 | kook = 0; |
| 1153 | |
| 1154 | // XOffset=0; |
| 1155 | } |
| 1156 | |
| 1157 | void FCEUPPU_Power(void) |
| 1158 | { |
| 1159 | int x; |
| 1160 | |
| 1161 | memset(NTARAM,0x00,0x800); |
| 1162 | memset(PALRAM,0x00,0x20); |
| 1163 | memset(SPRAM,0x00,0x100); |
| 1164 | FCEUPPU_Reset(); |
| 1165 | |
| 1166 | for(x=0x2000;x<0x4000;x+=8) |
| 1167 | { |
| 1168 | ARead[x]=A200x; |
| 1169 | BWrite[x]=B2000; |
| 1170 | ARead[x+1]=A200x; |
| 1171 | BWrite[x+1]=B2001; |
| 1172 | ARead[x+2]=A2002; |
| 1173 | BWrite[x+2]=B2002; |
| 1174 | ARead[x+3]=A200x; |
| 1175 | BWrite[x+3]=B2003; |
| 1176 | ARead[x+4]=A200x; //A2004; |
| 1177 | BWrite[x+4]=B2004; |
| 1178 | ARead[x+5]=A200x; |
| 1179 | BWrite[x+5]=B2005; |
| 1180 | ARead[x+6]=A200x; |
| 1181 | BWrite[x+6]=B2006; |
| 1182 | ARead[x+7]=A2007; |
| 1183 | BWrite[x+7]=B2007; |
| 1184 | } |
| 1185 | BWrite[0x4014]=B4014; |
| 1186 | } |
| 1187 | |
| 1188 | |
| 1189 | void FCEUPPU_Loop(int skip) |
| 1190 | { |
| 1191 | uint32 scanlines_per_frame = PAL ? 312 : 262; |
| 1192 | |
| 1193 | if(ppudead) /* Needed for Knight Rider, possibly others. */ |
| 1194 | { |
| 1195 | //memset(XBuf, 0x80, 256*240); |
| 1196 | X6502_Run(scanlines_per_frame*(256+85)); |
| 1197 | ppudead--; |
| 1198 | } |
| 1199 | else |
| 1200 | { |
| 1201 | X6502_Run(256+85); |
| 1202 | PPU_status |= 0x80; |
| 1203 | PPU[3]=PPUSPL=0; /* Not sure if this is correct. According |
| 1204 | to Matt Conte and my own tests, it is. Timing is probably |
| 1205 | off, though. NOTE: Not having this here |
| 1206 | breaks a Super Donkey Kong game. */ |
| 1207 | /* I need to figure out the true nature and length |
| 1208 | of this delay. |
| 1209 | */ |
| 1210 | X6502_Run(12); |
| 1211 | if(FCEUGameInfo.type==GIT_NSF) |
| 1212 | DoNSFFrame(); |
| 1213 | else |
| 1214 | { |
| 1215 | if(VBlankON) |
| 1216 | TriggerNMI(); |
| 1217 | } |
| 1218 | X6502_Run((scanlines_per_frame-242)*(256+85)-12); //-12); |
| 1219 | PPU_status&=0x1f; |
| 1220 | X6502_Run(256); |
| 1221 | |
| 1222 | { |
| 1223 | int x; |
| 1224 | |
| 1225 | if(ScreenON || SpriteON) |
| 1226 | { |
| 1227 | if(GameHBIRQHook && ((PPU[0]&0x38)!=0x18)) |
| 1228 | GameHBIRQHook(); |
| 1229 | if(PPU_hook) |
| 1230 | for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} |
| 1231 | if(GameHBIRQHook2) |
| 1232 | GameHBIRQHook2(); |
| 1233 | } |
| 1234 | X6502_Run(85-16); |
| 1235 | if(ScreenON || SpriteON) |
| 1236 | { |
| 1237 | RefreshAddr=TempAddr; |
| 1238 | if(PPU_hook) PPU_hook(RefreshAddr&0x3fff); |
| 1239 | } |
| 1240 | |
| 1241 | /* Clean this stuff up later. */ |
| 1242 | spork=numsprites=0; |
| 1243 | ResetRL(XBuf+32); |
| 1244 | |
| 1245 | X6502_Run(16-kook); |
| 1246 | kook ^= 1; |
| 1247 | } |
| 1248 | if(FCEUGameInfo.type==GIT_NSF) |
| 1249 | { |
| 1250 | X6502_Run((256+85)*240); |
| 1251 | } |
| 1252 | #ifdef FRAMESKIP |
| 1253 | else if(skip) |
| 1254 | { |
| 1255 | int y; |
| 1256 | |
| 1257 | y=SPRAM[0]; |
| 1258 | y++; |
| 1259 | |
| 1260 | PPU_status|=0x20; // Fixes "Bee 52". Does it break anything? |
| 1261 | if(GameHBIRQHook) |
| 1262 | { |
| 1263 | X6502_Run(256); |
| 1264 | for(scanline=0;scanline<240;scanline++) |
| 1265 | { |
| 1266 | if(ScreenON || SpriteON) |
| 1267 | GameHBIRQHook(); |
| 1268 | if(scanline==y && SpriteON) PPU_status|=0x40; |
| 1269 | X6502_Run((scanline==239)?85:(256+85)); |
| 1270 | } |
| 1271 | } |
| 1272 | else if(y<240) |
| 1273 | { |
| 1274 | X6502_Run((256+85)*y); |
| 1275 | if(SpriteON) PPU_status|=0x40; // Quick and very dirty hack. |
| 1276 | X6502_Run((256+85)*(240-y)); |
| 1277 | } |
| 1278 | else |
| 1279 | X6502_Run((256+85)*240); |
| 1280 | } |
| 1281 | #endif |
| 1282 | else |
| 1283 | { |
| 1284 | int x,max,maxref; |
| 1285 | |
| 1286 | deemp=PPU[1]>>5; |
| 1287 | for(scanline=0;scanline<240;) //scanline is incremented in DoLine. Evil. :/ |
| 1288 | { |
| 1289 | deempcnt[deemp]++; |
| 1290 | #ifdef WIN32 |
| 1291 | if((PPUViewer) && (scanline == PPUViewScanline)) UpdatePPUView(1); |
| 1292 | #endif |
| 1293 | DoLine(); |
| 1294 | } |
| 1295 | if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline); |
| 1296 | for(x=1,max=0,maxref=0;x<7;x++) |
| 1297 | { |
| 1298 | if(deempcnt[x]>max) |
| 1299 | { |
| 1300 | max=deempcnt[x]; |
| 1301 | maxref=x; |
| 1302 | } |
| 1303 | deempcnt[x]=0; |
| 1304 | } |
| 1305 | //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); |
| 1306 | //memset(deempcnt,0,sizeof(deempcnt)); |
| 1307 | SetNESDeemph(maxref,0); |
| 1308 | } |
| 1309 | } /* else... to if(ppudead) */ |
| 1310 | } |
| 1311 | |
| 1312 | |