54 lines
1.5 KiB
C
54 lines
1.5 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) 2002 Xodnizel
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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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#define IREMCon mapbyte1[0]
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static DECLFW(Mapper32_write)
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{
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switch(A>>12)
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{
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case 0x8:
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mapbyte1[1]=V;
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if(IREMCon) {ROM_BANK8(0xc000,V);ROM_BANK8(0x8000,~1);}
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else {ROM_BANK8(0x8000,V);ROM_BANK8(0xc000,~1);}
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break;
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case 0x9:IREMCon=(V>>1)&1;
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if(IREMCon) {ROM_BANK8(0xc000,mapbyte1[1]);ROM_BANK8(0x8000,~1);}
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else {ROM_BANK8(0x8000,mapbyte1[1]); ROM_BANK8(0xc000,~1);}
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MIRROR_SET(V&1);
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break;
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case 0xa:ROM_BANK8(0xA000,V);
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break;
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}
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if((A&0xF000)==0xb000)
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VROM_BANK1((A&0x7)<<10,V);
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}
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void Mapper32_init(void)
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{
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ROM_BANK16(0x8000,0);
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ROM_BANK16(0xc000,~0);
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SetWriteHandler(0x8000,0xffff,Mapper32_write);
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}
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