+++ /dev/null
-/* FCE Ultra - NES/Famicom Emulator
- *
- * Copyright notice for this file:
- * Copyright (C) 1998 BERO
- * Copyright (C) 2002 Ben Parnell
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-/* Code for emulating iNES mappers 4, 118,119 */
-
-#include "mapinc.h"
-
-#define resetmode mapbyte1[0]
-#define MMC3_cmd mapbyte1[1]
-#define A000B mapbyte1[2]
-#define A001B mapbyte1[3]
-#define DRegBuf mapbyte4
-
-#define PPUCHRBus mapbyte2[0]
-#define TKSMIR mapbyte3
-#define PIRREGS mapbyte2
-
-static void (*pwrap)(uint32 A, uint8 V);
-static void (*cwrap)(uint32 A, uint8 V);
-static void (*mwrap)(uint8 V);
-
-static int mmc3opts=0;
-
-static INLINE void FixMMC3PRG(int V);
-static INLINE void FixMMC3CHR(int V);
-
-static int latched;
-
-static DECLFW(MMC3_IRQWrite)
-{
- //printf("$%04x:$%02x, %d\n",A,V,scanline);
- switch(A&0xE001)
- {
- case 0xc000:IRQLatch=V;
- latched=1;
- if(resetmode)
- {
- IRQCount=V;
- latched=0;
- //resetmode=0;
- }
- break;
- case 0xc001:IRQCount=IRQLatch;
- break;
- case 0xE000:IRQa=0;
- X6502_IRQEnd(FCEU_IQEXT);
- resetmode=1;
- break;
- case 0xE001:IRQa=1;
- if(latched)
- IRQCount=IRQLatch;
- break;
- }
-}
-
-static INLINE void FixMMC3PRG(int V)
-{
- if(V&0x40)
- {
- pwrap(0xC000,DRegBuf[6]);
- pwrap(0x8000,~1);
- }
- else
- {
- pwrap(0x8000,DRegBuf[6]);
- pwrap(0xC000,~1);
- }
- pwrap(0xA000,DRegBuf[7]);
- pwrap(0xE000,~0);
- X6502_Rebase();
-}
-
-static INLINE void FixMMC3CHR(int V)
-{
- int cbase=(V&0x80)<<5;
- cwrap((cbase^0x000),DRegBuf[0]&(~1));
- cwrap((cbase^0x400),DRegBuf[0]|1);
- cwrap((cbase^0x800),DRegBuf[1]&(~1));
- cwrap((cbase^0xC00),DRegBuf[1]|1);
-
- cwrap(cbase^0x1000,DRegBuf[2]);
- cwrap(cbase^0x1400,DRegBuf[3]);
- cwrap(cbase^0x1800,DRegBuf[4]);
- cwrap(cbase^0x1c00,DRegBuf[5]);
-}
-
-static void MMC3RegReset(void)
-{
- IRQCount=IRQLatch=IRQa=MMC3_cmd=0;
-
- DRegBuf[0]=0;
- DRegBuf[1]=2;
- DRegBuf[2]=4;
- DRegBuf[3]=5;
- DRegBuf[4]=6;
- DRegBuf[5]=7;
- DRegBuf[6]=0;
- DRegBuf[7]=1;
-
- FixMMC3PRG(0);
- FixMMC3CHR(0);
-}
-
-static DECLFW(Mapper4_write)
-{
- switch(A&0xE001)
- {
- case 0x8000:
- if((V&0x40) != (MMC3_cmd&0x40))
- FixMMC3PRG(V);
- if((V&0x80) != (MMC3_cmd&0x80))
- FixMMC3CHR(V);
- MMC3_cmd = V;
- break;
-
- case 0x8001:
- {
- int cbase=(MMC3_cmd&0x80)<<5;
- DRegBuf[MMC3_cmd&0x7]=V;
- switch(MMC3_cmd&0x07)
- {
- case 0: cwrap((cbase^0x000),V&(~1));
- cwrap((cbase^0x400),V|1);
- break;
- case 1: cwrap((cbase^0x800),V&(~1));
- cwrap((cbase^0xC00),V|1);
- break;
- case 2: cwrap(cbase^0x1000,V); break;
- case 3: cwrap(cbase^0x1400,V); break;
- case 4: cwrap(cbase^0x1800,V); break;
- case 5: cwrap(cbase^0x1C00,V); break;
- case 6: if (MMC3_cmd&0x40) pwrap(0xC000,V);
- else pwrap(0x8000,V);
- X6502_Rebase();
- break;
- case 7: pwrap(0xA000,V);
- X6502_Rebase();
- break;
- }
- }
- break;
-
- case 0xA000:
- if(mwrap) mwrap(V&1);
- break;
- case 0xA001:
- A001B=V;
- break;
- }
-}
-
-static void MMC3_hb(void)
-{
- resetmode=0;
- if(IRQCount>=0)
- {
- IRQCount--;
- if(IRQCount<0)
- {
- //printf("IRQ: %d\n",scanline);
- if(IRQa)
- X6502_IRQBegin(FCEU_IQEXT);
- }
- }
-}
-static int isines;
-
-static void genmmc3restore(int version)
-{
- if(version>=56)
- {
- mwrap(A000B&1);
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
- }
- else if(isines)
- iNESStateRestore(version);
-}
-
-static void GENCWRAP(uint32 A, uint8 V)
-{
- setchr1(A,V);
-}
-
-static void GENPWRAP(uint32 A, uint8 V)
-{
- setprg8(A,V&0x3F);
-}
-
-static void GENMWRAP(uint8 V)
-{
- A000B=V;
- setmirror(V^1);
-}
-
-static void GENNOMWRAP(uint8 V)
-{
- A000B=V;
-}
-
-static void genmmc3ii(void (*PW)(uint32 A, uint8 V),
- void (*CW)(uint32 A, uint8 V),
- void (*MW)(uint8 V))
-{
- pwrap=GENPWRAP;
- cwrap=GENCWRAP;
- mwrap=GENMWRAP;
- if(PW) pwrap=PW;
- if(CW) cwrap=CW;
- if(MW) mwrap=MW;
- A000B=(Mirroring&1)^1; // For hard-wired mirroring on some MMC3 games.
- // iNES format needs to die or be extended...
- mmc3opts=0;
- SetWriteHandler(0x8000,0xBFFF,Mapper4_write);
- SetWriteHandler(0xC000,0xFFFF,MMC3_IRQWrite);
-
- GameHBIRQHook=MMC3_hb;
- GameStateRestore=genmmc3restore;
- if(!VROM_size)
- SetupCartCHRMapping(0, CHRRAM, 8192, 1);
- isines=1;
- MMC3RegReset();
- MapperReset=MMC3RegReset;
-}
-
-void Mapper4_init(void)
-{
- genmmc3ii(0,0,0);
-}
-
-static void M47PW(uint32 A, uint8 V)
-{
- V&=0xF;
- V|=PIRREGS[0]<<4;
- setprg8(A,V);
-}
-
-static void M47CW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- NV&=0x7F;
- NV|=PIRREGS[0]<<7;
- setchr1(A,NV);
-}
-
-static DECLFW(M47Write)
-{
- PIRREGS[0]=V&1;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
-}
-
-void Mapper47_init(void)
-{
- genmmc3ii(M47PW,M47CW,0);
- SetWriteHandler(0x6000,0x7FFF,M47Write);
- SetReadHandler(0x6000,0x7FFF,0);
-}
-
-static void M44PW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- if(PIRREGS[0]>=6) NV&=0x1F;
- else NV&=0x0F;
- NV|=PIRREGS[0]<<4;
- setprg8(A,NV);
-}
-static void M44CW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- if(PIRREGS[0]<6) NV&=0x7F;
- NV|=PIRREGS[0]<<7;
- setchr1(A,NV);
-}
-
-static DECLFW(Mapper44_write)
-{
- if(A&1)
- {
- PIRREGS[0]=V&7;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
- }
- else
- Mapper4_write(A,V);
-}
-
-void Mapper44_init(void)
-{
- genmmc3ii(M44PW,M44CW,0);
- SetWriteHandler(0xA000,0xBFFF,Mapper44_write);
-}
-
-static void M52PW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- NV&=0x1F^((PIRREGS[0]&8)<<1);
- NV|=((PIRREGS[0]&6)|((PIRREGS[0]>>3)&PIRREGS[0]&1))<<4;
- setprg8(A,NV);
-}
-
-static void M52CW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- NV&=0xFF^((PIRREGS[0]&0x40)<<1);
- NV|=(((PIRREGS[0]>>3)&4)|((PIRREGS[0]>>1)&2)|((PIRREGS[0]>>6)&(PIRREGS[0]>>4)&1))<<7;
- setchr1(A,NV);
-}
-
-static DECLFW(Mapper52_write)
-{
- if(PIRREGS[1])
- {
- (WRAM-0x6000)[A]=V;
- return;
- }
- PIRREGS[1]=1;
- PIRREGS[0]=V;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
-}
-
-static void M52Reset(void)
-{
- PIRREGS[0]=PIRREGS[1]=0;
- MMC3RegReset();
-}
-
-void Mapper52_init(void)
-{
- genmmc3ii(M52PW,M52CW,0);
- SetWriteHandler(0x6000,0x7FFF,Mapper52_write);
- MapperReset=M52Reset;
-}
-
-static void M45CW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- if(PIRREGS[2]&8)
- NV&=(1<<( (PIRREGS[2]&7)+1 ))-1;
- else
- NV&=0;
- NV|=PIRREGS[0]|((PIRREGS[2]&0x10)<<4);
- setchr1(A,NV);
-}
-
-static void M45PW(uint32 A, uint8 V)
-{
- V&=(PIRREGS[3]&0x3F)^0x3F;
- V|=PIRREGS[1];
- setprg8(A,V);
-}
-
-static DECLFW(Mapper45_write)
-{
- if(PIRREGS[3]&0x40) return;
- PIRREGS[PIRREGS[4]]=V;
- PIRREGS[4]=(PIRREGS[4]+1)&3;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
-}
-
-static void M45Reset(void)
-{
- FCEU_dwmemset(PIRREGS,0,5);
- MMC3RegReset();
-}
-
-void Mapper45_init(void)
-{
- genmmc3ii(M45PW,M45CW,0);
- SetWriteHandler(0x6000,0x7FFF,Mapper45_write);
- SetReadHandler(0x6000,0x7FFF,0);
- MapperReset=M45Reset;
-}
-static void M49PW(uint32 A, uint8 V)
-{
- if(PIRREGS[0]&1)
- {
- V&=0xF;
- V|=(PIRREGS[0]&0xC0)>>2;
- setprg8(A,V);
- }
- else
- {
- setprg32(0x8000,(PIRREGS[0]>>4)&3);
- X6502_Rebase();
- }
-}
-
-static void M49CW(uint32 A, uint8 V)
-{
- uint32 NV=V;
- NV&=0x7F;
- NV|=(PIRREGS[0]&0xC0)<<1;
- setchr1(A,NV);
-}
-
-static DECLFW(M49Write)
-{
- //printf("$%04x:$%02x\n",A,V);
- if(A001B&0x80)
- {
- PIRREGS[0]=V;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
- }
-}
-
-static void M49Reset(void)
-{
- PIRREGS[0]=0;
- MMC3RegReset();
-}
-
-void Mapper49_init(void)
-{
- genmmc3ii(M49PW,M49CW,0);
- SetWriteHandler(0x6000,0x7FFF,M49Write);
- SetReadHandler(0x6000,0x7FFF,0);
- MapperReset=M49Reset;
-}
-
-static DECLFW(Mapper250_write)
-{
- Mapper4_write((A&0xE000)|((A&0x400)>>10),A&0xFF);
-}
-
-static DECLFW(M250_IRQWrite)
-{
- MMC3_IRQWrite((A&0xE000)|((A&0x400)>>10),A&0xFF);
-}
-
-void Mapper250_init(void)
-{
- genmmc3ii(0,0,0);
- SetWriteHandler(0x8000,0xBFFF,Mapper250_write);
- SetWriteHandler(0xC000,0xFFFF,M250_IRQWrite);
-}
-
-static void FP_FASTAPASS(1) TKSPPU(uint32 A)
-{
- //static uint8 z;
- //if(A>=0x2000 || type<0) return;
- //if(type<0) return;
- A&=0x1FFF;
- //if(scanline>=140 && scanline<=200) {setmirror(MI_1);return;}
- //if(scanline>=140 && scanline<=200)
- // if(scanline>=190 && scanline<=200) {setmirror(MI_1);return;}
- // setmirror(MI_1);
- //printf("$%04x\n",A);
-
- A>>=10;
- PPUCHRBus=A;
- setmirror(MI_0+TKSMIR[A]);
-}
-
-static void TKSWRAP(uint32 A, uint8 V)
-{
- TKSMIR[A>>10]=V>>7;
- setchr1(A,V&0x7F);
- if(PPUCHRBus==(A>>10))
- setmirror(MI_0+(V>>7));
-}
-
-void Mapper118_init(void)
-{
- genmmc3ii(0,TKSWRAP,GENNOMWRAP);
- PPU_hook=TKSPPU;
-}
-
-static void TQWRAP(uint32 A, uint8 V)
-{
- setchr1r((V&0x40)>>2,A,V&0x3F);
-}
-
-void Mapper119_init(void)
-{
- genmmc3ii(0,TQWRAP,0);
- SetupCartCHRMapping(0x10, CHRRAM, 8192, 1);
-}
-
-static int wrams;
-
-static void GenMMC3Close(void)
-{
- UNIFOpenWRAM(UOW_WR,0,1);
- UNIFWriteWRAM(WRAM,wrams);
- UNIFCloseWRAM();
-}
-
-static DECLFW(MBWRAM)
-{
- (WRAM-0x6000)[A]=V;
-}
-
-static DECLFR(MAWRAM)
-{
- return((WRAM-0x6000)[A]);
-}
-
-static DECLFW(MBWRAMMMC6)
-{
- WRAM[A&0x3ff]=V;
-}
-
-static DECLFR(MAWRAMMMC6)
-{
- return(WRAM[A&0x3ff]);
-}
-
-static void GenMMC3Power(void)
-{
- SetWriteHandler(0x8000,0xBFFF,Mapper4_write);
- SetReadHandler(0x8000,0xFFFF,CartBR);
- SetWriteHandler(0xC000,0xFFFF,MMC3_IRQWrite);
-
- if(mmc3opts&1)
- {
- if(wrams==1024)
- {
- FCEU_CheatAddRAM(1,0x7000,WRAM);
- SetReadHandler(0x7000,0x7FFF,MAWRAMMMC6);
- SetWriteHandler(0x7000,0x7FFF,MBWRAMMMC6);
- }
- else
- {
- FCEU_CheatAddRAM(wrams/1024,0x6000,WRAM);
- SetReadHandler(0x6000,0x6000+wrams-1,MAWRAM);
- SetWriteHandler(0x6000,0x6000+wrams-1,MBWRAM);
- }
- if(!(mmc3opts&2))
- FCEU_dwmemset(WRAM,0,wrams);
- }
- MMC3RegReset();
-}
-
-void GenMMC3_Init(int prg, int chr, int wram, int battery)
-{
- pwrap=GENPWRAP;
- cwrap=GENCWRAP;
- mwrap=GENMWRAP;
-
- wrams=wram*1024;
-
- PRGmask8[0]&=(prg>>13)-1;
- CHRmask1[0]&=(chr>>10)-1;
- CHRmask2[0]&=(chr>>11)-1;
-
- if(wram)
- {
- mmc3opts|=1;
- AddExState(WRAM, wram*1024, 0, "WRAM");
- }
-
- if(battery)
- {
- mmc3opts|=2;
- BoardClose=GenMMC3Close;
-
- UNIFOpenWRAM(UOW_RD,0,1);
- UNIFReadWRAM(WRAM,wram*1024);
- UNIFCloseWRAM();
- }
-
- if(!chr)
- {
- CHRmask1[0]=7;
- CHRmask2[0]=3;
- SetupCartCHRMapping(0, CHRRAM, 8192, 1);
- AddExState(CHRRAM, 8192, 0, "CHRR");
- }
- AddExState(mapbyte1, 32, 0, "MPBY");
- AddExState(&IRQa, 1, 0, "IRQA");
- AddExState(&IRQCount, 4, 1, "IRQC");
- AddExState(&IRQLatch, 4, 1, "IQL1");
-
- BoardPower=GenMMC3Power;
- BoardReset=MMC3RegReset;
-
- GameHBIRQHook=MMC3_hb;
- GameStateRestore=genmmc3restore;
- isines=0;
-}
-
-// void GenMMC3_Init(int prg, int chr, int wram, int battery)
-
-void TFROM_Init(void)
-{
- GenMMC3_Init(512, 64, 0, 0);
-}
-
-void TGROM_Init(void)
-{
- GenMMC3_Init(512, 0, 0, 0);
-}
-
-void TKROM_Init(void)
-{
- GenMMC3_Init(512, 256, 8, 1);
-}
-
-void TLROM_Init(void)
-{
- GenMMC3_Init(512, 256, 0, 0);
-}
-
-void TSROM_Init(void)
-{
- GenMMC3_Init(512, 256, 8, 0);
-}
-
-void TLSROM_Init(void)
-{
- GenMMC3_Init(512, 256, 8, 0);
- cwrap=TKSWRAP;
- mwrap=GENNOMWRAP;
-}
-
-void TKSROM_Init(void)
-{
- GenMMC3_Init(512, 256, 8, 1);
- cwrap=TKSWRAP;
- mwrap=GENNOMWRAP;
-}
-
-void TQROM_Init(void)
-{
- GenMMC3_Init(512, 64, 0, 0);
- cwrap=TQWRAP;
-}
-
-/* MMC6 board */
-void HKROM_Init(void)
-{
- GenMMC3_Init(512, 512, 1, 1);
-}
notaz.gp2x.de / fceu.git / blobdiff