fceux/mappers/92.cpp

46 lines
1.2 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"
/* Original code provided by LULU */
static DECLFW(Mapper92_write)
{
uint8 reg=(A&0xF0)>>4;
uint8 bank=A&0xF;
if(A>=0x9000)
{
if(reg==0xD) ROM_BANK16(0xc000,bank);
else if(reg==0xE) VROM_BANK8(bank);
}
else
{
if(reg==0xB) ROM_BANK16(0xc000,bank);
else if(reg==0x7) VROM_BANK8(bank);
}
}
void Mapper92_init(void)
{
SetWriteHandler(0x8000,0xFFFF,Mapper92_write);
}