mirror of
https://github.com/dborth/fceugx.git
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54 lines
1.4 KiB
C
54 lines
1.4 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) 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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static DECLFW(Mapper235_write)
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{
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uint32 m;
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int z;
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if(A&0x400)
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onemir(0);
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else
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setmirror(((A>>13)&1)^1);
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m=A&0x1f;
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z=(A>>8)&3;
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if(A&0x800)
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{
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setprg16r(0x10|z,0x8000,(m<<1)|((A>>12)&1));
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setprg16r(0x10|z,0xC000,(m<<1)|((A>>12)&1));
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}
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else
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setprg32r(0x10|z,0x8000,m);
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}
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void Mapper235_init(void)
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{
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/* Fixme: Possible crashy bug if header is bad. */
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SetupCartPRGMapping(0x10,PRGptr[0],1024*1024,0);
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SetupCartPRGMapping(0x12,PRGptr[0]+1024*1024,1024,0);
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setprg32r(0x10,0x8000,0);
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SetReadHandler(0x8000,0xffff,CartBROB);
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SetWriteHandler(0x8000,0xffff,Mapper235_write);
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}
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