fceux/mappers/232.cpp

51 lines
1.3 KiB
C++

/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2002 Xodnizel
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mapinc.h"
static void DoIt(void)
{
ROM_BANK16(0x8000,(mapbyte1[1]&3) | ((mapbyte1[0]&0x18)>>1));
ROM_BANK16(0xc000,3|(((mapbyte1[0])&0x18)>>1));
}
DECLFW(Mapper232_write)
{
if(A<=0x9FFF)
mapbyte1[0]=V;
else
mapbyte1[1]=V;
DoIt();
}
static void QuattroReset(void)
{
mapbyte1[0]=0x18;
DoIt();
}
void Mapper232_init(void)
{
SetWriteHandler(0x6000,0xffff,Mapper232_write);
MapperReset=QuattroReset;
QuattroReset();
}