129 lines
3.0 KiB
C
129 lines
3.0 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) 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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* CAI Shogakko no Sansu
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*/
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#include "mapinc.h"
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static uint8 *CHRRAM=NULL;
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static uint8 SWRAM[4096];
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static uint8 regs[16];
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static uint8 WRAM[4096];
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static SFORMAT StateRegs[]=
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{
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{®s, 16, "REGS"},
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{WRAM, 4096, "WRAM"},
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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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if(regs[5]&0x40)
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{
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setchr4r(0,0x1000,regs[5]&0x3F);
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}
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else
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{
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setchr4r(0x10,0x0000,regs[5]);
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setchr4r(0x10,0x1000,regs[5]^1);
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}
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setprg8r((regs[2]>>6)&1,0x8000,(regs[2]&0x3F));
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setprg8r((regs[3]>>6)&1,0xA000,(regs[3]&0x3F));
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setprg8r((regs[4]>>6)&1,0xC000,(regs[4]&0x3F));
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setprg8r(1,0xE000,~0);
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setmirror((regs[0xA]&3));
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}
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static DECLFW(M190Write)
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{
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// FCEU_printf("write %04x:%04x %d, %d\n",A,V,scanline,timestamp);
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regs[(A&0x0F00)>>8]=V;
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Sync();
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}
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static DECLFR(M190Read)
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{
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// FCEU_printf("read %04x:%04x %d, %d\n",A,regs[(A&0x0F00)>>8],scanline,timestamp);
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return regs[(A&0x0F00)>>8];
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}
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static DECLFR(AWRAM)
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{
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return(WRAM[A-0x7000]);
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}
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static DECLFW(BWRAM)
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{
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WRAM[A-0x7000]=V;
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}
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static DECLFR(ASWRAM)
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{
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return(SWRAM[A-0x6000]);
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}
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static DECLFW(BSWRAM)
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{
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SWRAM[A-0x6000]=V;
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}
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static void M190Power(void)
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{
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setvram8(CHRRAM);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,M190Write);
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// SetReadHandler(0xDA00,0xDA00,M190Read);
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// SetReadHandler(0xDB00,0xDB00,M190Read);
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SetReadHandler(0xDC00,0xDC00,M190Read);
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SetReadHandler(0xDD00,0xDD00,M190Read);
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SetReadHandler(0x7000,0x7FFF,AWRAM);
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SetWriteHandler(0x7000,0x7FFF,BWRAM);
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SetReadHandler(0x6000,0x6FFF,ASWRAM);
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SetWriteHandler(0x6000,0x6FFF,BSWRAM);
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Sync();
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}
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static void M190Close(void)
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{
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if(CHRRAM)
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FCEU_gfree(CHRRAM);
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CHRRAM=NULL;
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}
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static void StateRestore(int version)
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{
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Sync();
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}
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void Mapper190_Init(CartInfo *info)
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{
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info->Power=M190Power;
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info->Close=M190Close;
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if(info->battery)
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{
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info->SaveGame[0]=SWRAM;
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info->SaveGameLen[0]=4096;
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}
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GameStateRestore=StateRestore;
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CHRRAM=(uint8*)FCEU_gmalloc(8192);
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SetupCartCHRMapping(0x10,CHRRAM,8192,1);
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AddExState(CHRRAM, 8192, 0, "CHRRAM");
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AddExState(&StateRegs, ~0, 0, 0);
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}
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