1 /* FCE Ultra - NES/Famicom Emulator
3 * Copyright notice for this file:
4 * Copyright (C) 1998 BERO
5 * Copyright (C) 2002 Ben Parnell
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.
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.
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
52 static void FetchSpriteData(void);
53 static void FASTAPASS(1) RefreshLine(uint8 *target);
54 static void PRefreshLine(void);
55 static void FASTAPASS(1) RefreshSprite(uint8 *target);
56 static void ResetPPU(void);
57 static void PowerPPU(void);
59 uint64 timestampbase=0;
62 uint32 MMC5HackVROMMask;
63 uint8 *MMC5HackExNTARAMPtr;
64 uint8 *MMC5HackVROMPTR;
65 uint8 MMC5HackCHRMode=0;
67 uint8 MMC5HackSPScroll;
70 uint8 *MMC5SPRVPage[8];
71 uint8 *MMC5BGVPage[8];
74 uint8 VRAMBuffer,PPUGenLatch;
80 /* Color deemphasis emulation. Joy... */
82 static int deempcnt[8];
84 static int tosprite=256;
87 void (*GameInterface)(int h);
89 void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
91 void (*GameStateRestore)(int version);
92 void (*GameHBIRQHook)(void);
94 readfunc ARead[0x10000];
95 writefunc BWrite[0x10000];
96 static readfunc *AReadG;
97 static writefunc *BWriteG;
110 int AllocGenieRW(void)
112 if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
114 if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
120 void FlushGenieRW(void)
126 for(x=0;x<0x8000;x++)
128 ARead[x+0x8000]=AReadG[x];
129 BWrite[x+0x8000]=BWriteG[x];
139 readfunc FASTAPASS(1) GetReadHandler(int32 a)
141 if(a>=0x8000 && RWWrap)
142 return AReadG[a-0x8000];
147 void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
155 for(x=end;x>=start;x--)
158 AReadG[x-0x8000]=func;
164 for(x=end;x>=start;x--)
168 writefunc FASTAPASS(1) GetWriteHandler(int32 a)
170 if(RWWrap && a>=0x8000)
171 return BWriteG[a-0x8000];
176 void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
184 for(x=end;x>=start;x--)
187 BWriteG[x-0x8000]=func;
192 for(x=end;x>=start;x--)
199 uint32 TempAddr,RefreshAddr;
201 static int maxsprites=8;
203 /* scanline is equal to the current visible scanline we're on. */
206 static uint32 scanlines_per_frame;
211 uint8 GameMemBlock[131072];
212 uint8 NTARAM[0x800],PALRAM[0x20],SPRAM[0x100],SPRBUF[0x100];
217 #define MMC5SPRVRAMADR(V) &MMC5SPRVPage[(V)>>10][(V)]
218 #define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)]
219 #define VRAMADR(V) &VPage[(V)>>10][(V)]
248 return ret|(PPUGenLatch&0x1F);
259 uint32 tmp=RefreshAddr&0x3FFF;
261 PPUGenLatch=ret=VRAMBuffer;
262 if(PPU_hook) PPU_hook(tmp);
265 VRAMBuffer=VPage[tmp>>10][tmp];
269 VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
272 if (INC32) RefreshAddr+=32;
274 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
292 //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
318 //printf("$%02x:$%02x\n",PPUSPL,V);
353 TempAddr|=(V&0x3f)<<8;
359 RefreshAddr=TempAddr;
362 PPU_hook(RefreshAddr);
369 uint32 tmp=RefreshAddr&0x3FFF;
376 PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=
377 PALRAM[0x10]=PALRAM[0x14]=PALRAM[0x18]=PALRAM[0x1c]=V&0x3f;
378 else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
382 if(PPUCHRRAM&(1<<(tmp>>10)))
383 VPage[tmp>>10][tmp]=V;
387 if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
388 vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
390 if (INC32) RefreshAddr+=32;
392 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
400 B2004(0x2004,X.DB=ARead[t+x](t+x));
401 X6502_AddCycles(512);
404 static void FASTAPASS(1) BGRender(uint8 *target)
410 tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
412 *(uint32 *)target=*(uint32 *)(target+4)=tem;
418 void FCEUI_FrameSkip(int x)
424 /* This is called at the beginning of each visible scanline */
425 static void Loop6502(void)
429 uint8 *target=XBuf+(scanline<<8)+(scanline<<4)+8;
431 if(ScreenON || SpriteON)
433 /* PRefreshLine() will not get called on skipped frames. This
434 could cause a problem, but the solution would be rather complex,
435 due to the current sprite 0 hit code.
443 if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
453 tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
455 FCEU_dwmemset(target,tem,264);
460 if (SpriteON && scanline)
461 RefreshSprite(target);
469 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0xF0F0F0F0;
473 *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x40404040;
476 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0xC0C0C0C0;
479 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x3f3f3f3f;
487 tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
488 FCEU_dwmemset(target,tem,256);
490 if(InputScanlineHook)
491 InputScanlineHook(target, scanline);
494 #define PAL(c) ((c)+cc)
497 static void PRefreshLine(void)
503 if (BGAdrHI) vofs = 0x1000;
505 vofs+=(RefreshAddr>>12)&7;
511 zz2=(uint8)((RefreshAddr>>10)&3);
512 PPU_hook(0x2000|(RefreshAddr&0xFFF));
513 no = vnapage[zz2][(RefreshAddr&0x3ff)];
514 PPU_hook((no<<4)+vofs);
515 if((RefreshAddr&0x1f)==0x1f)
522 /* Total of 33 tiles(32 + 1 extra) */
523 static void FASTAPASS(1) RefreshLine(uint8 *target)
527 register uint8 *P=target;
536 vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
539 /* This high-level graphics MMC5 emulation code was written
540 for MMC5 carts in "CL" mode. It's probably not totally
541 correct for carts in "SL" mode.
543 if(MMC5Hack && geniestage!=1)
545 if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
549 tochange=MMC5HackSPMode&0x1F;
551 for(X1=33;X1;X1--,P+=8)
554 register uint8 cc,zz,zz2;
557 if((tochange<=0 && MMC5HackSPMode&0x40) ||
558 (tochange>0 && !(MMC5HackSPMode&0x40)))
563 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
564 if(ys>=0x1E) ys-=0x1E;
565 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
567 C = MMC5HackVROMPTR+vadr;
568 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
570 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
571 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
576 zz2=(RefreshAddr>>10)&3;
577 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
578 C = MMC5BGVRAMADR(vadr);
579 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
580 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
584 if((RefreshAddr&0x1f)==0x1f)
591 else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
595 tochange=MMC5HackSPMode&0x1F;
597 for(X1=33;X1;X1--,P+=8)
604 if((tochange<=0 && MMC5HackSPMode&0x40) ||
605 (tochange>0 && !(MMC5HackSPMode&0x40)))
610 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
611 if(ys>=0x1E) ys-=0x1E;
612 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
614 C = MMC5HackVROMPTR+vadr;
615 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
617 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
618 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
623 zz2=(RefreshAddr>>10)&3;
624 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
625 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
626 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
627 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
631 if((RefreshAddr&0x1f)==0x1f)
639 else if(MMC5HackCHRMode==1)
641 for(X1=33;X1;X1--,P+=8)
649 zz2=(RefreshAddr>>10)&3;
650 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
651 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
652 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
653 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
657 if((RefreshAddr&0x1f)==0x1f)
665 for(X1=33;X1;X1--,P+=8)
668 register uint8 cc,zz,zz2;
672 zz2=(RefreshAddr>>10)&3;
673 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
674 C = MMC5BGVRAMADR(vadr);
675 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
676 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
680 if((RefreshAddr&0x1f)==0x1f)
686 } // End if(MMC5Hack)
690 for(X1=33;X1;X1--,P+=8)
693 register uint8 cc,zz,zz2;
697 zz2=(RefreshAddr>>10)&3;
698 PPU_hook(0x2000|(RefreshAddr&0xFFF));
699 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
700 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
701 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
708 if((RefreshAddr&0x1f)==0x1f)
716 for(X1=33;X1;X1--,P+=8)
719 register uint8 cc,zz,zz2;
723 zz2=(RefreshAddr>>10)&3;
724 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
726 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
727 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
730 if((RefreshAddr&0x1f)==0x1f)
745 static INLINE void Fixit2(void)
747 if(ScreenON || SpriteON)
749 uint32 rad=RefreshAddr;
751 rad|=TempAddr&0x041f;
753 //PPU_hook(RefreshAddr,-1);
757 static INLINE void Fixit1(void)
759 if(ScreenON || SpriteON)
761 uint32 rad=RefreshAddr;
763 if((rad&0x7000)==0x7000)
766 if((rad&0x3E0)==0x3A0)
773 if((rad&0x3E0)==0x3e0)
781 //PPU_hook(RefreshAddr,-1);
785 /* This is called at the beginning of all h-blanks on visible lines. */
786 static void DoHBlank(void)
788 if(ScreenON || SpriteON)
790 if(GameHBIRQHook && (ScreenON || SpriteON))
800 X6502_Run(25); // Tried 65, caused problems with Slalom(maybe others)
805 //fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr);
820 uint8 sprlinebuf[256+8];
822 void FCEUI_DisableSpriteLimitation(int a)
827 static uint8 nosprites,SpriteBlurp;
829 static void FetchSpriteData(void)
838 nosprites=SpriteBlurp=0;
840 vofs=(unsigned int)(PPU[0]&0x8&(((PPU[0]&0x20)^0x20)>>2))<<9;
844 for(n=63;n>=0;n--,spr++)
846 if((unsigned int)(scanline-spr->y)>=H) continue;
848 if(nosprites<maxsprites)
850 if(n==63) SpriteBlurp=1;
858 t = (int)scanline-(spr->y);
861 vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4);
863 vadr = (spr->no<<4)+vofs;
869 vadr+=(PPU[0]&0x20)>>1;
878 /* Fix this geniestage hack */
879 if(MMC5Hack && geniestage!=1) C = MMC5SPRVRAMADR(vadr);
880 else C = VRAMADR(vadr);
889 *(uint32 *)&SPRBUF[nosprites<<2]=*(uint32 *)&dst;
901 for(n=63;n>=0;n--,spr++)
903 if((unsigned int)(scanline-spr->y)>=H) continue;
905 if(nosprites<maxsprites)
907 if(n==63) SpriteBlurp=1;
915 t = (int)scanline-(spr->y);
918 vadr = ((spr->no&1)<<12) + ((spr->no&0xFE)<<4);
920 vadr = (spr->no<<4)+vofs;
926 vadr+=(PPU[0]&0x20)>>1;
935 if(MMC5Hack) C = MMC5SPRVRAMADR(vadr);
936 else C = VRAMADR(vadr);
945 *(uint32 *)&SPRBUF[nosprites<<2]=*(uint32 *)&dst;
958 static void FASTAPASS(1) RefreshSprite(uint8 *target)
964 if(!nosprites) return;
978 FCEU_dwmemset(sprlinebuf,0x80808080,256);
980 spr = (SPRB*)SPRBUF+nosprites;
982 for(n=nosprites;n>=0;n--,spr--)
984 register uint8 J,atr,c1,c2;
991 c1=((spr->ca[0]>>1)&0x55)|(spr->ca[1]&0xAA);
992 c2=(spr->ca[0]&0x55)|((spr->ca[1]<<1)&0xAA);
994 J=spr->ca[0]|spr->ca[1];
999 if(n==0 && SpriteBlurp && !(PPU_status&0x40))
1002 if(ze>256) {ze=256;}
1003 if(ScreenON && (scanline<FSettings.FirstSLine || scanline>FSettings.LastSLine
1032 //FCEU_DispMessage("%d, %d:%d",scanline,x,tosprite);
1036 VB = (PALRAM+0x10)+((atr&3)<<2);
1042 if (J&0x02) C[1]=VB[c1&3]|0x40;
1043 if (J&0x01) *C=VB[c2&3]|0x40;
1045 if (J&0x08) C[3]=VB[c1&3]|0x40;;
1046 if (J&0x04) C[2]=VB[c2&3]|0x40;;
1048 if (J&0x20) C[5]=VB[c1&3]|0x40;;
1049 if (J&0x10) C[4]=VB[c2&3]|0x40;;
1051 if (J&0x80) C[7]=VB[c1]|0x40;;
1052 if (J&0x40) C[6]=VB[c2]|0x40;;
1054 if (J&0x02) C[6]=VB[c1&3]|0x40;
1055 if (J&0x01) C[7]=VB[c2&3]|0x40;
1057 if (J&0x08) C[4]=VB[c1&3]|0x40;
1058 if (J&0x04) C[5]=VB[c2&3]|0x40;
1060 if (J&0x20) C[2]=VB[c1&3]|0x40;
1061 if (J&0x10) C[3]=VB[c2&3]|0x40;
1063 if (J&0x80) *C=VB[c1]|0x40;
1064 if (J&0x40) C[1]=VB[c2]|0x40;
1069 if (J&0x02) C[1]=VB[(c1&3)];
1070 if (J&0x01) *C=VB[(c2&3)];
1072 if (J&0x08) C[3]=VB[(c1&3)];
1073 if (J&0x04) C[2]=VB[(c2&3)];
1075 if (J&0x20) C[5]=VB[(c1&3)];
1076 if (J&0x10) C[4]=VB[(c2&3)];
1078 if (J&0x80) C[7]=VB[c1];
1079 if (J&0x40) C[6]=VB[c2];
1081 if (J&0x02) C[6]=VB[(c1&3)];
1082 if (J&0x01) C[7]=VB[(c2&3)];
1084 if (J&0x08) C[4]=VB[(c1&3)];
1085 if (J&0x04) C[5]=VB[(c2&3)];
1087 if (J&0x20) C[2]=VB[(c1&3)];
1088 if (J&0x10) C[3]=VB[(c2&3)];
1090 if (J&0x80) *C=VB[c1];
1091 if (J&0x40) C[1]=VB[c2];
1104 uint8 n=((PPU[1]&4)^4)<<1;
1107 uint32 t=*(uint32 *)(sprlinebuf+n);
1113 if(!(t&0x40)) // Normal sprite
1115 else if(P[n]&64) // behind bg sprite
1121 if(!(t&0x4000)) // Normal sprite
1122 P[n+1]=(sprlinebuf+1)[n];
1123 else if(P[n+1]&64) // behind bg sprite
1124 P[n+1]=(sprlinebuf+1)[n];
1129 if(!(t&0x400000)) // Normal sprite
1130 P[n+2]=(sprlinebuf+2)[n];
1131 else if(P[n+2]&64) // behind bg sprite
1132 P[n+2]=(sprlinebuf+2)[n];
1137 if(!(t&0x40000000)) // Normal sprite
1138 P[n+3]=(sprlinebuf+3)[n];
1139 else if(P[n+3]&64) // behind bg sprite
1140 P[n+3]=(sprlinebuf+3)[n];
1145 if(!(t&0x40)) // Normal sprite
1147 else if(P[n]&64) // behind bg sprite
1153 if(!(t&0x4000)) // Normal sprite
1154 P[n+1]=(sprlinebuf+1)[n];
1155 else if(P[n+1]&64) // behind bg sprite
1156 P[n+1]=(sprlinebuf+1)[n];
1161 if(!(t&0x400000)) // Normal sprite
1162 P[n+2]=(sprlinebuf+2)[n];
1163 else if(P[n+2]&64) // behind bg sprite
1164 P[n+2]=(sprlinebuf+2)[n];
1169 if(!(t&0x40000000)) // Normal sprite
1170 P[n+3]=(sprlinebuf+3)[n];
1171 else if(P[n+3]&64) // behind bg sprite
1172 P[n+3]=(sprlinebuf+3)[n];
1178 if(n) goto loopskie;
1182 void ResetMapping(void)
1186 SetReadHandler(0x0000,0xFFFF,ANull);
1187 SetWriteHandler(0x0000,0xFFFF,BNull);
1189 SetReadHandler(0,0x7FF,ARAML);
1190 SetWriteHandler(0,0x7FF,BRAML);
1192 SetReadHandler(0x800,0x1FFF,ARAMH); /* Part of a little */
1193 SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1195 for(x=0x2000;x<0x4000;x+=8)
1215 BWrite[0x4014]=B4014;
1221 void CloseGame(void)
1225 if(FCEUGameInfo.type!=GIT_NSF)
1228 if(FSettings.NetworkPlay) KillNetplay();
1230 GameInterface(GI_CLOSE);
1236 void ResetGameLoaded(void)
1238 if(GameLoaded) CloseGame();
1242 GameExpSound.Fill=0;
1243 GameExpSound.RChange=0;
1244 if(GameExpSound.Kill)
1245 GameExpSound.Kill();
1246 GameExpSound.Kill=0;
1252 FCEUGameInfo.name=0;
1253 FCEUGameInfo.type=GIT_CART;
1254 FCEUGameInfo.vidsys=GIV_USER;
1255 FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1256 FCEUGameInfo.inputfc=-1;
1259 FCEUGI *FCEUI_LoadGame(char *name)
1266 fp=FCEU_fopen(name,"rb");
1269 FCEU_PrintError("Error opening \"%s\"!",name);
1274 if(iNESLoad(name,fp))
1278 if(FDSLoad(name,fp))
1280 if(UNIFLoad(name,fp))
1283 FCEU_PrintError("An error occurred while loading the file.");
1292 if(FCEUGameInfo.type!=GIT_NSF)
1293 if(FSettings.GameGenie)
1298 if(FSettings.NetworkPlay) InitNetplay();
1301 if(FCEUGameInfo.type!=GIT_NSF)
1307 FCEU_ResetPalette();
1309 return(&FCEUGameInfo);
1313 void FCEU_ResetVidSys(void)
1317 if(FCEUGameInfo.vidsys==GIV_NTSC)
1319 else if(FCEUGameInfo.vidsys==GIV_PAL)
1327 scanlines_per_frame=312;
1328 FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1329 FSettings.LastSLine=FSettings.UsrLastSLine[1];
1334 scanlines_per_frame=262;
1335 FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1336 FSettings.LastSLine=FSettings.UsrLastSLine[0];
1338 SetSoundVariables();
1341 int FCEUI_Initialize(void)
1343 if(!InitVirtualVideo())
1345 memset(&FSettings,0,sizeof(FSettings));
1346 FSettings.UsrFirstSLine[0]=8;
1347 FSettings.UsrFirstSLine[1]=0;
1348 FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1349 FSettings.SoundVolume=65536; // 100%
1353 #define harko 0xe //0x9
1354 static INLINE void Thingo(void)
1360 X6502_Run(256-harko);
1368 X6502_Run(tosprite);
1370 X6502_Run(256-tosprite-harko);
1376 X6502_Run(256-harko);
1378 X6502_Run(tosprite-(256-harko));
1380 X6502_Run(256-tosprite);
1392 ApplyPeriodicCheats();
1396 PPU[3]=PPUSPL=0; /* Not sure if this is correct. According
1397 to Matt Conte and my own tests, it is. Timing is probably
1398 off, though. NOTE: Not having this here
1399 breaks a Super Donkey Kong game. */
1401 X6502_Run(12); /* I need to figure out the true nature and length
1404 if(FCEUGameInfo.type==GIT_NSF)
1409 X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1416 if(ScreenON || SpriteON)
1424 if(ScreenON || SpriteON)
1426 RefreshAddr=TempAddr;
1427 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1429 if(FCEUGameInfo.type==GIT_NSF)
1430 X6502_Run((256+85)*240);
1436 for(scanline=0;scanline<240;scanline++)
1441 for(x=1,max=0,maxref=0;x<7;x++)
1450 //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);
1451 //memset(deempcnt,0,sizeof(deempcnt));
1452 SetNESDeemph(maxref,0);
1458 ssize=FlushEmulateSound();
1463 FCEU_PutImageDummy();
1465 FCEUD_Update(0,WaveFinal,ssize);
1471 FCEUD_Update(XBuf+8,WaveFinal,ssize);
1486 #include <sys/time.h>
1489 void FCEUI_Emulate(void)
1492 uint64 starttime,end;
1495 gettimeofday(&tv,0);
1496 starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1501 // Probably won't work well on Windows port; for
1502 // debugging/speed testing.
1506 gettimeofday(&tv,0);
1507 end=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1508 w=frcount*10000000000LL/(end-starttime);
1511 printf("Average FPS: %d.%04d\n",i,frac);
1517 void FCEUI_CloseGame(void)
1522 static void ResetPPU(void)
1524 VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1527 RefreshAddr=TempAddr=0;
1531 static void PowerPPU(void)
1533 memset(NTARAM,0x00,0x800);
1534 memset(PALRAM,0x00,0x20);
1535 memset(SPRAM,0x00,0x100);
1541 if(!GameLoaded || (FCEUGameInfo.type==GIT_NSF)) return;
1542 GameInterface(GI_RESETM2);
1550 if(!GameLoaded) return;
1552 FCEU_CheatResetRAM();
1553 FCEU_CheatAddRAM(2,0,RAM);
1557 memset(RAM,0x00,0x800);
1559 GameInterface(GI_POWER);