/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
- * Copyright (C) 1998 BERO
+ * Copyright (C) 1998 BERO
* Copyright (C) 2002 Ben Parnell
*
* This program is free software; you can redistribute it and/or modify
#define Pal (PALRAM)
-static void FASTAPASS(1) RefreshLine(uint8 *target);
+#ifdef DEBUG_ASM_6502
+extern int cpu_repeat;
+extern int cpu_lastval;
+#endif
+
+static void (*RefreshLine)(uint8 *P, uint32 vofs) = NULL;
static void PRefreshLine(void);
static void ResetPPU(void);
uint32 MMC5HackVROMMask;
uint8 *MMC5HackExNTARAMPtr;
uint8 *MMC5HackVROMPTR;
-uint8 MMC5HackCHRMode=0;
+uint8 MMC5HackCHRMode=0;
uint8 MMC5HackSPMode;
uint8 MMC5HackSPScroll;
uint8 MMC5HackSPPage;
static writefunc *BWriteG;
static int RWWrap=0;
+#ifdef ASM_6502
+static void asmcpu_update(int32 cycles)
+{
+ // timestamp..
+ timestamp += ((cycles >> 4) * 43) >> 7; // aproximating /= 48
+
+ // some code from x6502.c
+ fhcnt-=cycles;
+ if(fhcnt<=0)
+ {
+ FrameSoundUpdate();
+ fhcnt+=fhinc;
+ }
+
+ if(PCMIRQCount>0)
+ {
+ PCMIRQCount-=cycles;
+ if(PCMIRQCount<=0)
+ {
+ vdis=1;
+ if((PSG[0x10]&0x80) && !(PSG[0x10]&0x40))
+ {
+ extern uint8 SIRQStat;
+ SIRQStat|=0x80;
+ X6502_IRQBegin(FCEU_IQDPCM);
+ }
+ }
+ }
+}
+
+void asmcpu_unpack(void)
+{
+ nes_registers[0] = X.A << 24;
+ nes_registers[1] = X.X;
+ nes_registers[2] = X.Y;
+ pc_base = 0;
+ nes_registers[3] = X.PC;
+ X6502_rebase_a();
+ nes_registers[4] = X.S << 24;
+ nes_registers[4]|= X.IRQlow << 8;
+ nes_registers[7] = (uint32)X.count;
+
+ // NVUB DIZC
+ nes_registers[4]|= X.P & 0x5d;
+ nes_registers[5] = X.P << 24; // N
+ if (!(X.P&0x02)) nes_registers[5] |= 1; // Z
+}
+
+void asmcpu_pack(void)
+{
+ X.A = nes_registers[0] >> 24;
+ X.X = nes_registers[1];
+ X.Y = nes_registers[2];
+ X.PC= nes_registers[3] - pc_base;
+ X.S = nes_registers[4] >> 24;
+ X.IRQlow = nes_registers[4] >> 8;
+ X.count = (int32) nes_registers[7];
+
+ // NVUB DIZC
+ X.P = nes_registers[4] & 0x5d;
+ if ( nes_registers[5]&0x80000000) X.P |= 0x80; // N
+ if (!(nes_registers[5]&0x000000ff)) X.P |= 0x02; // Z
+}
+#endif
+
DECLFW(BNull)
{
/* scanline is equal to the current visible scanline we're on. */
int scanline;
-static uint32 scanlines_per_frame;
+
+uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
+uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
+uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
+#if !defined(ASM_6502) || defined(DEBUG_ASM_6502)
+uint8 RAM[0x800] __attribute__ ((aligned (4)));
+#endif
uint8 PPU[4];
uint8 PPUSPL;
-uint8 GameMemBlock[131072];
-uint8 NTARAM[0x800],PALRAM[0x20];
-uint8 RAM[0x800];
-
uint8 PAL=0;
#define MMC5BGVRAMADR(V) &MMC5BGVPage[(V)>>10][(V)]
#define VRAMADR(V) &VPage[(V)>>10][(V)]
-
+
static DECLFW(BRAML)
-{
+{
RAM[A]=V;
}
return RAM[A&0x7FF];
}
-
+
static DECLFR(A2002)
{
uint8 ret;
+#ifdef DEBUG_ASM_6502
+ if (cpu_repeat) return cpu_lastval;
+#endif
ret = PPU_status;
vtoggle=0;
PPU_status&=0x7F;
+#ifdef DEBUG_ASM_6502
+ cpu_lastval=ret|(PPUGenLatch&0x1F);
+#endif
return ret|(PPUGenLatch&0x1F);
}
{
uint8 ret;
uint32 tmp=RefreshAddr&0x3FFF;
+#ifdef DEBUG_ASM_6502
+ if (cpu_repeat) return cpu_lastval;
+#endif
PPUGenLatch=ret=VRAMBuffer;
if(PPU_hook) PPU_hook(tmp);
- if(tmp<0x2000)
+ if(tmp<0x2000)
{
VRAMBuffer=VPage[tmp>>10][tmp];
}
- else
+ else
{
VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
}
if (INC32) RefreshAddr+=32;
else RefreshAddr++;
if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
+#ifdef DEBUG_ASM_6502
+ cpu_lastval=ret;
+#endif
return ret;
}
}
static DECLFW(B2007)
-{
+{
uint32 tmp=RefreshAddr&0x3FFF;
PPUGenLatch=V;
VPage[tmp>>10][tmp]=V;
}
else
- {
+ {
if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
}
}
static DECLFW(B4014)
-{
+{
uint32 t=V<<8;
int x;
+#ifdef DEBUG_ASM_6502
+ if (cpu_repeat) { X6502_AddCycles_a(512); return; }
+ for(x=0;x<256;x++)
+ B2004(0x2004,X.DB=ARead[t+x](t+x));
+ X6502_AddCycles_c(512);
+#else
for(x=0;x<256;x++)
B2004(0x2004,X.DB=ARead[t+x](t+x));
X6502_AddCycles(512);
+#endif
}
void BGRender(uint8 *target)
{
- uint32 tem;
- RefreshLine(target);
+ uint32 tem, vofs;
+ vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
+
+ Pal[0]|=64;
+ Pal[4]|=64;
+ Pal[8]|=64;
+ Pal[0xC]|=64;
+ RefreshLine(target-XOffset, vofs);
+ Pal[0]&=63;
+ Pal[4]&=63;
+ Pal[8]&=63;
+ Pal[0xC]&=63;
+
if(!(PPU[1]&2))
{
- tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
- tem|=0x40404040;
+ tem=Pal[0]|0x40;
+ tem|=tem<<8;
+ tem|=tem<<16;
*(uint32 *)target=*(uint32 *)(target+4)=tem;
}
}
#ifdef FRAMESKIP
-extern int framesRendered;
+int FSkip_setting=-1; // auto
int FSkip=0;
void FCEUI_FrameSkip(int x)
{
{
uint32 tem;
int x;
- uint8 *target=XBuf+(scanline<<8)+(scanline<<4)+8;
+ uint8 *target=XBuf+scanline*320+32;
if(ScreenON || SpriteON)
{
{
#endif
if(PPU[1]&0x01)
- {
+ {
for(x=63;x>=0;x--)
- *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0xF0F0F0F0;
+ ((uint32 *)target)[x]=((uint32*)target)[x]&0xF0F0F0F0;
}
if((PPU[1]>>5)==0x7)
for(x=63;x>=0;x--)
- *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x40404040;
+ ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x40404040;
else if(PPU[1]&0xE0)
for(x=63;x>=0;x--)
- *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0xC0C0C0C0;
+ ((uint32 *)target)[x]=((uint32*)target)[x]|0xC0C0C0C0;
else
for(x=63;x>=0;x--)
- *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x3f3f3f3f;
-
+ ((uint32 *)target)[x]=((uint32*)target)[x]&0x3f3f3f3f;
+ FCEU_dwmemset(target- 8,0x3f3f3f3f,8);
+ FCEU_dwmemset(target+256,0x3f3f3f3f,8);
#ifdef FRAMESKIP
}
#endif
{
tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
FCEU_dwmemset(target,tem,256);
- }
+ }
if(InputScanlineHook)
InputScanlineHook(target, scanline);
}
}
}
-/* Total of 33 tiles(32 + 1 extra) */
-static void FASTAPASS(1) RefreshLine(uint8 *target)
+/* This high-level graphics MMC5 emulation code was written
+ for MMC5 carts in "CL" mode. It's probably not totally
+ correct for carts in "SL" mode.
+ */
+static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
{
- uint32 vofs;
- int X1;
- uint8 *P=target;
-
- vofs=0;
-
- Pal[0]|=64;
- Pal[4]|=64;
- Pal[8]|=64;
- Pal[0xC]|=64;
-
- vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
- P-=XOffset;
-
- /* This high-level graphics MMC5 emulation code was written
- for MMC5 carts in "CL" mode. It's probably not totally
- correct for carts in "SL" mode.
- */
- if(MMC5Hack && geniestage!=1)
- {
- if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
- {
- int8 tochange;
+ int8 tochange, X1;
tochange=MMC5HackSPMode&0x1F;
uint8 cc,zz,zz2;
uint32 vadr;
- if((tochange<=0 && MMC5HackSPMode&0x40) ||
+ if((tochange<=0 && MMC5HackSPMode&0x40) ||
(tochange>0 && !(MMC5HackSPMode&0x40)))
{
uint8 xs,ys;
- xs=33-X1;
+ xs=33-X1;
ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
if(ys>=0x1E) ys-=0x1E;
vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
RefreshAddr++;
tochange--;
}
- }
- else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
- {
- int8 tochange;
+}
+
+static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
+{
+ int8 tochange, X1;
tochange=MMC5HackSPMode&0x1F;
{
uint8 xs,ys;
- xs=33-X1;
+ xs=33-X1;
ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
if(ys>=0x1E) ys-=0x1E;
vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
RefreshAddr++;
tochange--;
}
- }
+}
+
+static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
+{
+ int8 X1;
- else if(MMC5HackCHRMode==1)
- {
for(X1=33;X1;X1--,P+=8)
{
- uint8 *C;
+ uint8 *C;
uint8 cc;
uint8 zz2;
- uint32 vadr;
+ uint32 vadr;
C=MMC5HackVROMPTR;
zz2=(RefreshAddr>>10)&3;
vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
- C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
+ C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
MMC5HackVROMMask) << 12) + (vadr & 0xfff);
vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
cc = vadr;
else
RefreshAddr++;
}
- }
- else
- {
+}
+
+static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
+{
+ int8 X1;
+
for(X1=33;X1;X1--,P+=8)
{
uint8 *C;
cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
#include "fceline.h"
-
+
if((RefreshAddr&0x1f)==0x1f)
RefreshAddr^=0x41F;
else
RefreshAddr++;
- }
- }
- } // End if(MMC5Hack)
+ }
+}
+
+static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
+{
+ int8 X1;
- else if(PPU_hook)
- {
for(X1=33;X1;X1--,P+=8)
{
- uint8 *C;
+ uint8 *C;
uint8 cc,zz,zz2;
- uint32 vadr;
+ uint32 vadr;
zz=RefreshAddr&0x1F;
zz2=(RefreshAddr>>10)&3;
else
RefreshAddr++;
}
- }
- else
- {
- for(X1=33;X1;X1--,P+=8)
+}
+
+static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
+{
+ int8 X1;
+ uint32 rfraddr = RefreshAddr;
+ uint8 *page = vnapage[(rfraddr>>10)&3];
+ uint32 cc2=0;
+
+ if ((rfraddr&0xc)!=0)
+ cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
+
+ for (X1=33;X1;X1--,P+=8)
{
- uint8 *C;
- uint8 cc,zz,zz2;
+ uint8 cc,*C;
uint32 vadr;
- zz=RefreshAddr&0x1F;
- zz2=(RefreshAddr>>10)&3;
- vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
+ vadr=(page[rfraddr&0x3ff]<<4)+vofs;
C = VRAMADR(vadr);
- cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
- cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
- #include "fceline.h"
-
- if((RefreshAddr&0x1f)==0x1f)
- RefreshAddr^=0x41F;
- else
- RefreshAddr++;
- }
- }
+ if ((rfraddr&0xc)==0)
+ cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
+ cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
- #undef vofs
+ #include "fceline.h"
- Pal[0]&=63;
- Pal[4]&=63;
- Pal[8]&=63;
- Pal[0xC]&=63;
+ if((rfraddr&0x1f)==0x1f) {
+ rfraddr^=0x41F;
+ page = vnapage[(rfraddr>>10)&3];
+ } else
+ rfraddr++;
+ }
+ RefreshAddr = rfraddr;
+}
+
+static void SetRefreshLine(void)
+{
+ if(MMC5Hack && geniestage!=1)
+ {
+ if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
+ {
+ if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
+ RefreshLine = RefreshLine_MMC5Hack1;
+ }
+ else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
+ {
+ if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
+ RefreshLine = RefreshLine_MMC5Hack2;
+ }
+ else if(MMC5HackCHRMode==1)
+ {
+ if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
+ RefreshLine = RefreshLine_MMC5Hack3;
+ }
+ else
+ {
+ if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
+ RefreshLine = RefreshLine_MMC5Hack4;
+ }
+ } // End if(MMC5Hack)
+ else if(PPU_hook)
+ {
+ if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
+ RefreshLine = RefreshLine_PPU_hook;
+ }
+ else
+ {
+ if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
+ RefreshLine = RefreshLine_normal;
+ }
}
-static INLINE void Fixit2(void)
+//static INLINE
+void Fixit2(void)
{
if(ScreenON || SpriteON)
{
}
}
-static INLINE void Fixit1(void)
+//static INLINE
+void Fixit1(void)
{
if(ScreenON || SpriteON)
{
}
}
+//#define NEW_TRY
+
/* This is called at the beginning of all h-blanks on visible lines. */
+#ifndef NEW_TRY
static void DoHBlank(void)
{
if(ScreenON || SpriteON)
//PPU_hook(0,-1);
//fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr);
}
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
+#endif
// ============================//
FlushGameCheats();
#ifdef NETWORK
if(FSettings.NetworkPlay) KillNetplay();
- #endif
+ #endif
GameInterface(GI_CLOSE);
CloseGenie();
GameLoaded=0;
endlseq:
FCEU_fclose(fp);
- GameLoaded=1;
+ GameLoaded=1;
FCEU_ResetVidSys();
if(FCEUGameInfo.type!=GIT_NSF)
LoadGamePalette();
LoadGameCheats();
}
-
+
FCEU_ResetPalette();
Exit=0;
return(&FCEUGameInfo);
if(w)
{
PAL=1;
- scanlines_per_frame=312;
FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
FSettings.LastSLine=FSettings.UsrLastSLine[1];
}
else
{
PAL=0;
- scanlines_per_frame=262;
FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
FSettings.LastSLine=FSettings.UsrLastSLine[0];
}
+ printf("PAL = %i\n", PAL);
SetSoundVariables();
}
static INLINE void Thingo(void)
{
Loop6502();
+#ifndef NEW_TRY
if(tosprite>=256)
- {
+ {
X6502_Run(256-harko);
Fixit1();
X6502_Run(harko);
tosprite=256;
}
DoHBlank();
+#else
+ X6502_Run_scanline();
+#endif
}
#undef harko
{
for(;;)
{
+ uint32 scanlines_per_frame = PAL ? 312 : 262;
+ //extern int asdc;
+ //printf("asdc: %i\n", asdc);
+ //asdc=0;
ApplyPeriodicCheats();
X6502_Run(256+85);
breaks a Super Donkey Kong game. */
X6502_Run(12); /* I need to figure out the true nature and length
- of this delay.
+ of this delay.
*/
if(FCEUGameInfo.type==GIT_NSF)
TriggerNMINSF();
else if(VBlankON)
TriggerNMI();
- X6502_Run((scanlines_per_frame-242)*(256+85)-12);
+ X6502_Run(256+85-12);
+ for(scanline=242+1;scanline<scanlines_per_frame;scanline++)
+ X6502_Run(256+85);
PPU_status&=0x1f;
if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
}
if(FCEUGameInfo.type==GIT_NSF)
+ {
X6502_Run((256+85)*240);
+ }
else
{
int x,max,maxref;
deemp=PPU[1]>>5;
+ SetRefreshLine();
for(scanline=0;scanline<240;scanline++)
{
deempcnt[deemp]++;
{
FCEU_PutImageDummy();
FSkip--;
- framesRendered++;
FCEUD_Update(0,WaveFinalMono,ssize);
}
else
X6502_Reset();
}
-void PowerNES(void)
+void PowerNES(void)
{
if(!GameLoaded) return;
GeniePower();
+printf("X.DB offs: %02x\n", (int)&X.DB - (int)&X);
+
memset(RAM,0x00,0x800);
ResetMapping();
GameInterface(GI_POWER);
notaz.gp2x.de / fceu.git / blobdiff