/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
- * Copyright (C) 2002 Ben Parnell
+ * Copyright (C) 2005 CaH4e3
*
* 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
*
* 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
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "mapinc.h"
-//undef printf
-
-static int32 IRQCount,IRQLatch;
-static uint8 IRQa,resetmode,mbia;
-static uint8 sizer,bigbank,bigbank2;
-
-static uint8 DRegBuf[8],MMC3_cmd;
+#include "mmc3.h"
+static uint8 *CHRRAM = NULL; // there is no more extern CHRRAM in mmc3.h
+ // I need chrram here and local static == local
static int masko8[8]={63,31,15,1,3,0,0,0};
-//static int masko1[8]={511,255,127,7,7,0,0,0};
-
-static void swsetprg8(uint32 A, uint32 V)
-{
- V&=masko8[sizer&7];
- V|=(bigbank*2);
- setprg8r((V/64)&15,A,V);
-}
-
-static void swsetchr1(uint32 A, uint32 V)
-{
- if(sizer&0x20)
- setchr1r(0x10,A,V);
- else
- {
-// V&=masko1[sizer&7];
- V|=bigbank2*8;
- setchr1r((V/512)&15,A,V);
- }
-}
-
-static void swsetchr2(uint32 A, uint32 V)
-{
- if(sizer&0x20)
- setchr2r(0x10,A,V);
- else
- {
- //V&=masko1[sizer&7]>>1;
- V|=bigbank2*4;
- setchr2r((V/256)&15,A,V);
- }
-}
-static void Sup24_hb(void)
+static void Super24PW(uint32 A, uint8 V)
{
- if(ScreenON || SpriteON)
- {
- resetmode=0;
- if(IRQCount>=0)
- {
- IRQCount--;
- if(IRQCount<0)
- {
- if(IRQa)
- {
- resetmode = 1;
- X6502_IRQBegin(FCEU_IQEXT);
- }
- }
- }
- }
+ uint32 NV=V&masko8[EXPREGS[0]&7];
+ NV|=(EXPREGS[1]<<1);
+ setprg8r((NV>>6)&0xF,A,NV);
}
-static DECLFW(Sup24IRQWrite)
+static void Super24CW(uint32 A, uint8 V)
{
- switch(A&0xE001)
- {
- case 0xc000:IRQLatch=V;
- if(resetmode==1)
- IRQCount=IRQLatch;
- break;
- case 0xc001:resetmode=1;
- IRQCount=IRQLatch;
- break;
- case 0xE000:IRQa=0;X6502_IRQEnd(FCEU_IQEXT);
- if(resetmode==1)
- {IRQCount=IRQLatch;}
- break;
- case 0xE001:IRQa=1;
- if(resetmode==1)
- {IRQCount=IRQLatch;}
- break;
- }
+ if(EXPREGS[0]&0x20)
+ setchr1r(0x10,A,V);
+ else
+ {
+ uint32 NV=V|(EXPREGS[2]<<3);
+ setchr1r((NV>>9)&0xF,A,NV);
+ }
}
-static INLINE void FixMMC3PRG(int V)
+static DECLFW(Super24Write)
{
- swsetprg8(0xA000,DRegBuf[7]);
- swsetprg8(0xE000,~0);
- if(V&0x40)
- {
- swsetprg8(0xC000,DRegBuf[6]);
- swsetprg8(0x8000,~1);
- }
- else
- {
- swsetprg8(0x8000,DRegBuf[6]);
- swsetprg8(0xC000,~1);
- }
+ switch(A)
+ {
+ case 0x5FF0: EXPREGS[0]=V;
+ FixMMC3PRG(MMC3_cmd);
+ FixMMC3CHR(MMC3_cmd);
+ break;
+ case 0x5FF1: EXPREGS[1]=V;
+ FixMMC3PRG(MMC3_cmd);
+ break;
+ case 0x5FF2: EXPREGS[2]=V;
+ FixMMC3CHR(MMC3_cmd);
+ break;
+ }
}
-static INLINE void FixMMC3CHR(int V)
+static void Super24Power(void)
{
- int cbase=(V&0x80)<<5;
- swsetchr2((cbase^0x000),DRegBuf[0]>>1);
- swsetchr2((cbase^0x800),DRegBuf[1]>>1);
- swsetchr1(cbase^0x1000,DRegBuf[2]);
- swsetchr1(cbase^0x1400,DRegBuf[3]);
- swsetchr1(cbase^0x1800,DRegBuf[4]);
- swsetchr1(cbase^0x1c00,DRegBuf[5]);
-}
-
-static DECLFW(Super24hiwrite)
-{
- //printf("$%04x:$%02x, %d\n",A,V,scanline);
- 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: V>>=1;swsetchr2((cbase^0x000),V);break;
- case 1: V>>=1;swsetchr2((cbase^0x800),V);break;
- case 2: swsetchr1(cbase^0x1000,V); break;
- case 3: swsetchr1(cbase^0x1400,V); break;
- case 4: swsetchr1(cbase^0x1800,V); break;
- case 5: swsetchr1(cbase^0x1C00,V); break;
- case 6: if (MMC3_cmd&0x40) swsetprg8(0xC000,V);
- else swsetprg8(0x8000,V);
- break;
- case 7: swsetprg8(0xA000,V);
- break;
- }
- }
- break;
-
- case 0xA000:
- mbia=V;
- setmirror((V&1)^1);
- break;
- }
-}
-
-
-DECLFW(Super24Write)
-{
- //printf("$%04x:$%02x\n",A,V);
- switch(A)
- {
- case 0x5ff0:sizer=V;
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
- break;
- case 0x5FF1:
- bigbank=V;
- FixMMC3PRG(MMC3_cmd);
- break;
- case 0x5FF2:
- bigbank2=V;
- FixMMC3CHR(MMC3_cmd);
- break;
- }
+ EXPREGS[0]=0x24;
+ EXPREGS[1]=159;
+ EXPREGS[2]=0;
+ GenMMC3Power();
+ SetWriteHandler(0x5000,0x7FFF,Super24Write);
+ SetReadHandler(0x8000,0xFFFF,CartBR);
}
static void Super24Reset(void)
{
- SetWriteHandler(0x8000,0xBFFF,Super24hiwrite);
- SetWriteHandler(0x5000,0x7FFF,Super24Write);
- SetWriteHandler(0xC000,0xFFFF,Sup24IRQWrite);
- SetReadHandler(0x8000,0xFFFF,CartBR);
- GameHBIRQHook=Sup24_hb;
- IRQCount=IRQLatch=IRQa=resetmode=0;
- sizer=0x24;
- bigbank=159;
- bigbank2=0;
-
- MMC3_cmd=0;
- DRegBuf[6]=0;
- DRegBuf[7]=1;
-
- FixMMC3PRG(0);
- FixMMC3CHR(0);
+ EXPREGS[0]=0x24;
+ EXPREGS[1]=159;
+ EXPREGS[2]=0;
+ MMC3RegReset();
}
-static void MrRestore(int version)
+static void Super24Close(void)
{
- FixMMC3PRG(MMC3_cmd);
- FixMMC3CHR(MMC3_cmd);
- setmirror((mbia&1)^1);
+ if(CHRRAM)
+ FCEU_gfree(CHRRAM);
+ CHRRAM = NULL;
}
-void Super24_Init(void)
+void Super24_Init(CartInfo *info)
{
- BoardPower=Super24Reset;
- SetupCartCHRMapping(0x10, GameMemBlock, 8192, 1);
- GameStateRestore=MrRestore;
-
- AddExState(GameMemBlock, 8192, 0, "CHRR");
- AddExState(DRegBuf, 8, 0, "DREG");
- AddExState(&IRQCount, 4, 1, "IRQC");
- AddExState(&IRQLatch, 4, 1, "IQL1");
- AddExState(&IRQa, 1, 0, "IRQA");
- AddExState(&sizer, 1, 0, "SIZA");
- AddExState(&bigbank, 1, 0, "BIG1");
- AddExState(&bigbank2, 1, 0, "BIG2");
+ GenMMC3_Init(info, 128, 256, 0, 0);
+ info->Power=Super24Power;
+ info->Reset=Super24Reset;
+ info->Close=Super24Close;
+ cwrap=Super24CW;
+ pwrap=Super24PW;
+ CHRRAM=(uint8*)FCEU_gmalloc(8192);
+ SetupCartCHRMapping(0x10, CHRRAM, 8192, 1);
+ AddExState(CHRRAM, 8192, 0, "CHRR");
+ AddExState(EXPREGS, 3, 0, "BIG2");
}
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