128 lines
2.9 KiB
C++
128 lines
2.9 KiB
C++
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2006 CaH4e3
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static uint8 unromchr;
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static uint8 dipswitch;
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static void BMCFK23CCW(uint32 A, uint8 V)
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{
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if(EXPREGS[0]&0x40)
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setchr8(EXPREGS[2]|unromchr);
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else
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{
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uint16 base=(EXPREGS[2]&0x7F)<<3;
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setchr1(A,V|base);
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if(EXPREGS[3]&2)
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{
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setchr1(0x0400,EXPREGS[6]|base);
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setchr1(0x0C00,EXPREGS[7]|base);
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}
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}
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}
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static void BMCFK23CPW(uint32 A, uint8 V)
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{
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if(EXPREGS[0]&4)
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setprg32(0x8000,EXPREGS[1]>>1);
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else
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{
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if(EXPREGS[0]&2)
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setprg8(A,(V&(0x3F>>(EXPREGS[0]&3)))|(EXPREGS[1]<<1));
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else
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setprg8(A,V);
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if(EXPREGS[3]&2)
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{
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setprg8(0xC000,EXPREGS[4]);
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setprg8(0xE000,EXPREGS[5]);
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}
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}
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}
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static DECLFW(BMCFK23CHiWrite)
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{
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if(EXPREGS[0]&0x40)
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{
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if(EXPREGS[0]&0x20)
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unromchr=0;
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else
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{
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unromchr=V&3;
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FixMMC3CHR(MMC3_cmd);
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}
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}
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else
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{
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if((A==0x8001)&&(EXPREGS[3]&2&&MMC3_cmd&8))
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{
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EXPREGS[4|(MMC3_cmd&3)]=V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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else
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if(A<0xC000)
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MMC3_CMDWrite(A,V);
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else
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MMC3_IRQWrite(A,V);
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}
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}
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static DECLFW(BMCFK23CWrite)
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{
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if(A&(1<<(dipswitch+4)))
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{
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EXPREGS[A&3]=V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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}
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static void BMCFK23CReset(void)
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{
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dipswitch++;
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dipswitch&=3;
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EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
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EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
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MMC3RegReset();
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}
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static void BMCFK23CPower(void)
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{
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EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=EXPREGS[3]=0;
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EXPREGS[4]=EXPREGS[5]=EXPREGS[6]=EXPREGS[7]=0xFF;
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GenMMC3Power();
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SetWriteHandler(0x5001,0x5fff,BMCFK23CWrite);
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SetWriteHandler(0x8000,0xFFFF,BMCFK23CHiWrite);
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}
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void BMCFK23C_Init(CartInfo *info)
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{
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GenMMC3_Init(info, 512, 256, 8, 0);
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cwrap=BMCFK23CCW;
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pwrap=BMCFK23CPW;
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info->Power=BMCFK23CPower;
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info->Reset=BMCFK23CReset;
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AddExState(EXPREGS, 8, 0, "EXPR");
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AddExState(&unromchr, 1, 0, "UNCHR");
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AddExState(&dipswitch, 1, 0, "DIPSW");
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}
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