fceux/mappers/204.c

39 lines
1.2 KiB
C

/* FCE Ultra - NES/Famicom Emulator
*
* Copyright notice for this file:
* Copyright (C) 2003 CaH4e3
*
* 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 DECLFW(Mapper204_write)
{
int tmp2=A&0x6;
int tmp1=tmp2+((tmp2==0x6)?0:(A&1));
MIRROR_SET((A>>4)&1);
ROM_BANK16(0x8000,tmp1);
ROM_BANK16(0xc000,tmp2+((tmp2==0x6)?1:(A&1)));
VROM_BANK8(tmp1);
}
void Mapper204_init(void)
{
ROM_BANK32(~0);
VROM_BANK8(~0);
SetWriteHandler(0x8000,0xFFFF,Mapper204_write);
}