/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
- * Copyright (C) 2003 Xodnizel
+ * 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
*/
#include "mapinc.h"
+#include "mmc3.h"
-static uint8 PRGSel;
-static uint8 PBuf[4],PSel;
-static uint8 cmd;
-static uint8 DRegs[8];
-static uint32 count=0;
-static uint32 last=0;
-
-static DECLFW(M208Write1)
-{
- PRGSel=(V&0x1)|((V>>3)&0x2);
- setprg32(0x8000,PRGSel);
-}
-
-static DECLFW(M208Write2)
-{
- static uint8 lut[256]={
+static uint8 lut[256]={
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59,0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59,0x51, 0x41, 0x11, 0x01, 0x51, 0x41, 0x11, 0x01,
0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59, 0x59,0x59, 0x49, 0x19, 0x09, 0x59, 0x49, 0x19, 0x09,
0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x11, 0x41, 0x51, 0x01, 0x11, 0x41, 0x51,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x09, 0x19, 0x49, 0x59, 0x09, 0x19, 0x49, 0x59,0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
- };
- if(A<=0x57FF) PSel=V;
- else
- PBuf[(A&0x03)]=V^lut[PSel];
-}
-
-static DECLFR(M208Read)
+static void M208PW(uint32 A, uint8 V)
{
- return(PBuf[(A&0x3)]);
+ setprg32(0x8000,EXPREGS[5]);
}
-static void Sync(void)
+static DECLFW(M208Write)
{
- int x;
-
- setchr2(0x0000,DRegs[0]>>1);
- setchr2(0x0800,DRegs[1]>>1);
- for(x=0;x<4;x++)
- setchr1(0x1000+x*0x400,DRegs[2+x]);
+ EXPREGS[5]=(V&0x1)|((V>>3)&0x2);
+ FixMMC3PRG(MMC3_cmd);
}
-static DECLFW(M208HWrite)
+static DECLFW(M208ProtWrite)
{
- switch(A&0xe001)
- {
- case 0xc000:IRQLatch=IRQCount=V;break;
- case 0xc001:IRQCount=IRQLatch;last=count=0;break;
- case 0xe000:IRQa=0;X6502_IRQEnd(FCEU_IQEXT);break;
- case 0xe001:IRQa=1;break;
- case 0x8000:cmd=V;break;
- case 0x8001:DRegs[cmd&7]=V;
- Sync();
- break;
-
- }
+ if(A<=0x57FF)
+ EXPREGS[4]=V;
+ else
+ EXPREGS[(A&0x03)]=V^lut[EXPREGS[4]];
}
-static void M208Power(void)
+static DECLFR(M208ProtRead)
{
- PRGSel=3;
- setprg32(0x8000,3);
- SetWriteHandler(0x4800,0x4FFF,M208Write1);
- SetWriteHandler(0x5000,0x5fff,M208Write2);
- SetWriteHandler(0x8000,0xFFFF,M208HWrite);
- SetReadHandler(0x5800,0x5FFF,M208Read);
- SetReadHandler(0x8000,0xffff,CartBR);
+ return(EXPREGS[(A&0x3)]);
}
-static void sl(void)
-{
- if(IRQa)
- {
- if(IRQCount>=0)
- {
- IRQCount--;
- if(IRQCount<0)
- {
- X6502_IRQBegin(FCEU_IQEXT);
- }
- }
- }
-}
-
-static void FP_FASTAPASS(1) foo(uint32 A)
+static void M208Power(void)
{
- if((A&0x2000) && !(last&0x2000))
- {
- count++;
- if(count==42)
- {
- sl();
- count=0;
- }
- }
- last=A;
+ EXPREGS[5]=3;
+ GenMMC3Power();
+ SetWriteHandler(0x4800,0x4FFF,M208Write);
+ SetWriteHandler(0x5000,0x5fff,M208ProtWrite);
+ SetReadHandler(0x5800,0x5FFF,M208ProtRead);
+ SetReadHandler(0x8000,0xffff,CartBR);
}
void Mapper208_Init(CartInfo *info)
{
- info->Power=M208Power;
- //GameHBIRQHook=sl;
- PPU_hook=foo;
+ GenMMC3_Init(info, 128, 256, 0, 0);
+ pwrap=M208PW;
+ info->Power=M208Power;
+ AddExState(EXPREGS, 6, 0, "EXPR");
}
-