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
54 static void (*RefreshLine)(uint8 *P, uint32 vofs) = NULL;
55 static void PRefreshLine(void);
57 static void ResetPPU(void);
58 static void PowerPPU(void);
60 uint64 timestampbase=0;
63 uint32 MMC5HackVROMMask;
64 uint8 *MMC5HackExNTARAMPtr;
65 uint8 *MMC5HackVROMPTR;
66 uint8 MMC5HackCHRMode=0;
68 uint8 MMC5HackSPScroll;
71 uint8 *MMC5SPRVPage[8];
72 uint8 *MMC5BGVPage[8];
75 uint8 VRAMBuffer,PPUGenLatch;
81 /* Color deemphasis emulation. Joy... */
83 static int deempcnt[8];
88 void (*GameInterface)(int h);
90 void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
92 void (*GameStateRestore)(int version);
93 void (*GameHBIRQHook)(void);
95 readfunc ARead[0x10000];
96 writefunc BWrite[0x10000];
97 static readfunc *AReadG;
98 static writefunc *BWriteG;
111 int AllocGenieRW(void)
113 if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
115 if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
121 void FlushGenieRW(void)
127 for(x=0;x<0x8000;x++)
129 ARead[x+0x8000]=AReadG[x];
130 BWrite[x+0x8000]=BWriteG[x];
140 readfunc FASTAPASS(1) GetReadHandler(int32 a)
142 if(a>=0x8000 && RWWrap)
143 return AReadG[a-0x8000];
148 void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
156 for(x=end;x>=start;x--)
159 AReadG[x-0x8000]=func;
165 for(x=end;x>=start;x--)
169 writefunc FASTAPASS(1) GetWriteHandler(int32 a)
171 if(RWWrap && a>=0x8000)
172 return BWriteG[a-0x8000];
177 void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
185 for(x=end;x>=start;x--)
188 BWriteG[x-0x8000]=func;
193 for(x=end;x>=start;x--)
200 uint32 TempAddr,RefreshAddr;
203 /* scanline is equal to the current visible scanline we're on. */
206 static uint32 scanlines_per_frame;
208 uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
209 uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
210 uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
211 uint8 RAM[0x800] __attribute__ ((aligned (4)));
219 #define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)]
220 #define VRAMADR(V) &VPage[(V)>>10][(V)]
249 return ret|(PPUGenLatch&0x1F);
260 uint32 tmp=RefreshAddr&0x3FFF;
262 PPUGenLatch=ret=VRAMBuffer;
263 if(PPU_hook) PPU_hook(tmp);
266 VRAMBuffer=VPage[tmp>>10][tmp];
270 VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
273 if (INC32) RefreshAddr+=32;
275 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
293 //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
319 //printf("$%02x:$%02x\n",PPUSPL,V);
355 TempAddr|=(V&0x3f)<<8;
361 RefreshAddr=TempAddr;
364 PPU_hook(RefreshAddr);
371 uint32 tmp=RefreshAddr&0x3FFF;
378 PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=
379 PALRAM[0x10]=PALRAM[0x14]=PALRAM[0x18]=PALRAM[0x1c]=V&0x3f;
380 else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
384 if(PPUCHRRAM&(1<<(tmp>>10)))
385 VPage[tmp>>10][tmp]=V;
389 if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
390 vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
392 if (INC32) RefreshAddr+=32;
394 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
402 B2004(0x2004,X.DB=ARead[t+x](t+x));
403 X6502_AddCycles(512);
406 void BGRender(uint8 *target)
409 vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
415 RefreshLine(target-XOffset, vofs);
426 *(uint32 *)target=*(uint32 *)(target+4)=tem;
431 int FSkip_setting=-1; // auto
433 void FCEUI_FrameSkip(int x)
439 /* This is called at the beginning of each visible scanline */
440 static void Loop6502(void)
444 uint8 *target=XBuf+(scanline<<8)+(scanline<<4)+8;
446 if(ScreenON || SpriteON)
448 /* PRefreshLine() will not get called on skipped frames. This
449 could cause a problem, but the solution would be rather complex,
450 due to the current sprite 0 hit code.
458 if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
468 tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
470 FCEU_dwmemset(target,tem,264);
475 if (SpriteON && scanline)
476 RefreshSprite(target);
484 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0xF0F0F0F0;
488 *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x40404040;
491 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0xC0C0C0C0;
494 *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x3f3f3f3f;
502 tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
503 FCEU_dwmemset(target,tem,256);
505 if(InputScanlineHook)
506 InputScanlineHook(target, scanline);
509 #define PAL(c) ((c)+cc)
512 static void PRefreshLine(void)
518 if (BGAdrHI) vofs = 0x1000;
520 vofs+=(RefreshAddr>>12)&7;
526 zz2=(uint8)((RefreshAddr>>10)&3);
527 PPU_hook(0x2000|(RefreshAddr&0xFFF));
528 no = vnapage[zz2][(RefreshAddr&0x3ff)];
529 PPU_hook((no<<4)+vofs);
530 if((RefreshAddr&0x1f)==0x1f)
537 /* This high-level graphics MMC5 emulation code was written
538 for MMC5 carts in "CL" mode. It's probably not totally
539 correct for carts in "SL" mode.
541 static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
545 tochange=MMC5HackSPMode&0x1F;
547 for(X1=33;X1;X1--,P+=8)
553 if((tochange<=0 && MMC5HackSPMode&0x40) ||
554 (tochange>0 && !(MMC5HackSPMode&0x40)))
559 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
560 if(ys>=0x1E) ys-=0x1E;
561 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
563 C = MMC5HackVROMPTR+vadr;
564 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
566 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
567 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
572 zz2=(RefreshAddr>>10)&3;
573 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
574 C = MMC5BGVRAMADR(vadr);
575 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
576 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
580 if((RefreshAddr&0x1f)==0x1f)
588 static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
592 tochange=MMC5HackSPMode&0x1F;
594 for(X1=33;X1;X1--,P+=8)
601 if((tochange<=0 && MMC5HackSPMode&0x40) ||
602 (tochange>0 && !(MMC5HackSPMode&0x40)))
607 ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
608 if(ys>=0x1E) ys-=0x1E;
609 vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
611 C = MMC5HackVROMPTR+vadr;
612 C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
614 cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
615 cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
620 zz2=(RefreshAddr>>10)&3;
621 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
622 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
623 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
624 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
628 if((RefreshAddr&0x1f)==0x1f)
636 static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
640 for(X1=33;X1;X1--,P+=8)
648 zz2=(RefreshAddr>>10)&3;
649 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
650 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
651 MMC5HackVROMMask) << 12) + (vadr & 0xfff);
652 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
656 if((RefreshAddr&0x1f)==0x1f)
663 static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
667 for(X1=33;X1;X1--,P+=8)
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;
682 if((RefreshAddr&0x1f)==0x1f)
689 static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
693 for(X1=33;X1;X1--,P+=8)
700 zz2=(RefreshAddr>>10)&3;
701 PPU_hook(0x2000|(RefreshAddr&0xFFF));
702 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
703 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
704 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
711 if((RefreshAddr&0x1f)==0x1f)
718 static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
721 uint32 rfraddr = RefreshAddr;
722 uint8 *page = vnapage[(rfraddr>>10)&3];
725 if ((rfraddr&0xc)!=0)
726 cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
728 for (X1=33;X1;X1--,P+=8)
733 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
735 if ((rfraddr&0xc)==0)
736 cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
737 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
741 if((rfraddr&0x1f)==0x1f) {
743 page = vnapage[(rfraddr>>10)&3];
747 RefreshAddr = rfraddr;
750 static void SetRefreshLine(void)
752 if(MMC5Hack && geniestage!=1)
754 if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
756 if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
757 RefreshLine = RefreshLine_MMC5Hack1;
759 else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
761 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
762 RefreshLine = RefreshLine_MMC5Hack2;
764 else if(MMC5HackCHRMode==1)
766 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
767 RefreshLine = RefreshLine_MMC5Hack3;
771 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
772 RefreshLine = RefreshLine_MMC5Hack4;
774 } // End if(MMC5Hack)
777 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
778 RefreshLine = RefreshLine_PPU_hook;
782 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
783 RefreshLine = RefreshLine_normal;
787 static INLINE void Fixit2(void)
789 if(ScreenON || SpriteON)
791 uint32 rad=RefreshAddr;
793 rad|=TempAddr&0x041f;
795 //PPU_hook(RefreshAddr,-1);
799 static INLINE void Fixit1(void)
801 if(ScreenON || SpriteON)
803 uint32 rad=RefreshAddr;
805 if((rad&0x7000)==0x7000)
808 if((rad&0x3E0)==0x3A0)
815 if((rad&0x3E0)==0x3e0)
823 //PPU_hook(RefreshAddr,-1);
827 /* This is called at the beginning of all h-blanks on visible lines. */
828 static void DoHBlank(void)
830 if(ScreenON || SpriteON)
832 if(GameHBIRQHook && (ScreenON || SpriteON))
842 X6502_Run(25); // Tried 65, caused problems with Slalom(maybe others)
847 //fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr);
852 // ============================//
854 // ===========================//
856 void ResetMapping(void)
860 SetReadHandler(0x0000,0xFFFF,ANull);
861 SetWriteHandler(0x0000,0xFFFF,BNull);
863 SetReadHandler(0,0x7FF,ARAML);
864 SetWriteHandler(0,0x7FF,BRAML);
866 SetReadHandler(0x800,0x1FFF,ARAMH); /* Part of a little */
867 SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
869 for(x=0x2000;x<0x4000;x+=8)
889 BWrite[0x4014]=B4014;
899 if(FCEUGameInfo.type!=GIT_NSF)
902 if(FSettings.NetworkPlay) KillNetplay();
904 GameInterface(GI_CLOSE);
910 void ResetGameLoaded(void)
912 if(GameLoaded) CloseGame();
917 GameExpSound.RChange=0;
918 if(GameExpSound.Kill)
927 FCEUGameInfo.type=GIT_CART;
928 FCEUGameInfo.vidsys=GIV_USER;
929 FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
930 FCEUGameInfo.inputfc=-1;
933 FCEUGI *FCEUI_LoadGame(char *name)
940 fp=FCEU_fopen(name,"rb");
943 FCEU_PrintError("Error opening \"%s\"!",name);
948 if(iNESLoad(name,fp))
954 if(UNIFLoad(name,fp))
957 FCEU_PrintError("An error occurred while loading the file.");
966 if(FCEUGameInfo.type!=GIT_NSF)
967 if(FSettings.GameGenie)
972 if(FSettings.NetworkPlay) InitNetplay();
975 if(FCEUGameInfo.type!=GIT_NSF)
983 return(&FCEUGameInfo);
987 void FCEU_ResetVidSys(void)
991 if(FCEUGameInfo.vidsys==GIV_NTSC)
993 else if(FCEUGameInfo.vidsys==GIV_PAL)
1001 scanlines_per_frame=312;
1002 FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1003 FSettings.LastSLine=FSettings.UsrLastSLine[1];
1008 scanlines_per_frame=262;
1009 FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1010 FSettings.LastSLine=FSettings.UsrLastSLine[0];
1012 printf("PAL = %i\n", PAL);
1013 SetSoundVariables();
1016 int FCEUI_Initialize(void)
1018 if(!InitVirtualVideo())
1020 memset(&FSettings,0,sizeof(FSettings));
1021 FSettings.UsrFirstSLine[0]=8;
1022 FSettings.UsrFirstSLine[1]=0;
1023 FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1024 FSettings.SoundVolume=65535; // 100%
1028 #define harko 0xe //0x9
1029 static INLINE void Thingo(void)
1035 X6502_Run(256-harko);
1043 X6502_Run(tosprite);
1045 X6502_Run(256-tosprite-harko);
1051 X6502_Run(256-harko);
1053 X6502_Run(tosprite-(256-harko));
1055 X6502_Run(256-tosprite);
1067 ApplyPeriodicCheats();
1071 PPU[3]=PPUSPL=0; /* Not sure if this is correct. According
1072 to Matt Conte and my own tests, it is. Timing is probably
1073 off, though. NOTE: Not having this here
1074 breaks a Super Donkey Kong game. */
1076 X6502_Run(12); /* I need to figure out the true nature and length
1079 if(FCEUGameInfo.type==GIT_NSF)
1084 X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1091 if(ScreenON || SpriteON)
1099 if(ScreenON || SpriteON)
1101 RefreshAddr=TempAddr;
1102 if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1104 if(FCEUGameInfo.type==GIT_NSF)
1105 X6502_Run((256+85)*240);
1112 for(scanline=0;scanline<240;scanline++)
1117 for(x=1,max=0,maxref=0;x<7;x++)
1126 //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);
1127 //memset(deempcnt,0,sizeof(deempcnt));
1128 SetNESDeemph(maxref,0);
1134 ssize=FlushEmulateSound();
1139 FCEU_PutImageDummy();
1141 FCEUD_Update(0,WaveFinalMono,ssize);
1147 FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
1162 #include <sys/time.h>
1165 void FCEUI_Emulate(void)
1168 uint64 starttime,end;
1171 gettimeofday(&tv,0);
1172 starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1177 // Probably won't work well on Windows port; for
1178 // debugging/speed testing.
1182 gettimeofday(&tv,0);
1183 end=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1184 w=frcount*10000000000LL/(end-starttime);
1187 printf("Average FPS: %d.%04d\n",i,frac);
1193 void FCEUI_CloseGame(void)
1198 static void ResetPPU(void)
1200 VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1203 RefreshAddr=TempAddr=0;
1207 static void PowerPPU(void)
1209 memset(NTARAM,0x00,0x800);
1210 memset(PALRAM,0x00,0x20);
1211 memset(SPRAM,0x00,0x100);
1217 if(!GameLoaded || (FCEUGameInfo.type==GIT_NSF)) return;
1218 GameInterface(GI_RESETM2);
1226 if(!GameLoaded) return;
1228 FCEU_CheatResetRAM();
1229 FCEU_CheatAddRAM(2,0,RAM);
1233 memset(RAM,0x00,0x800);
1235 GameInterface(GI_POWER);