mirror of
https://github.com/dborth/fceugx.git
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105 lines
2.3 KiB
C++
105 lines
2.3 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2005 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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* Family Study Box by Fukutake Shoten
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*/
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#include "mapinc.h"
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static uint8 SWRAM[2816];
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static uint8 *WRAM=NULL;
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static uint8 regs[4];
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static SFORMAT StateRegs[]=
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{
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{regs, 4, "DREG"},
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{SWRAM, 2816, "SWRAM"},
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{0}
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};
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static void Sync(void)
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{
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setprg8r(0x10,0x6000,regs[0]>>6);
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setprg16(0x8000,regs[1]);
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setprg16(0xc000,0);
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}
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static DECLFW(M186Write)
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{
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if(A&0x4203) regs[A&3]=V;
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Sync();
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}
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static DECLFR(M186Read)
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{
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switch(A)
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{
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case 0x4200: return 0x00; break;
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case 0x4201: return 0x00; break;
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case 0x4202: return 0x40; break;
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case 0x4203: return 0x00; break;
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}
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return 0xFF;
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}
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static DECLFR(ASWRAM)
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{
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return(SWRAM[A-0x4400]);
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}
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static DECLFW(BSWRAM)
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{
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SWRAM[A-0x4400]=V;
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}
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static void M186Power(void)
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{
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setchr8(0);
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SetReadHandler(0x6000,0xFFFF,CartBR);
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SetWriteHandler(0x6000,0xFFFF,CartBW);
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SetReadHandler(0x4200,0x43FF,M186Read);
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SetWriteHandler(0x4200,0x43FF,M186Write);
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SetReadHandler(0x4400,0x4EFF,ASWRAM);
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SetWriteHandler(0x4400,0x4EFF,BSWRAM);
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regs[0]=regs[1]=regs[2]=regs[3];
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Sync();
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}
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static void M186Close(void)
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{
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if(WRAM)
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FCEU_gfree(WRAM);
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WRAM=NULL;
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}
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static void M186Restore(int version)
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{
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Sync();
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}
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void Mapper186_Init(CartInfo *info)
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{
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info->Power=M186Power;
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info->Close=M186Close;
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GameStateRestore=M186Restore;
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WRAM=(uint8*)FCEU_gmalloc(32768);
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SetupCartPRGMapping(0x10,WRAM,32768,1);
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AddExState(WRAM, 32768, 0, "WRAM");
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AddExState(StateRegs, ~0, 0, 0);
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}
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