fceux/mappers/61.cpp

55 lines
1.4 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 DECLFW(Mapper61_write)
{
// printf("$%04x:$%02x\n",A,V);
switch(A&0x30)
{
case 0x00:
case 0x30:
ROM_BANK32(A&0xF);
break;
case 0x20:
case 0x10:
ROM_BANK16(0x8000,((A&0xF)<<1)| (((A&0x20)>>4)) );
ROM_BANK16(0xC000,((A&0xF)<<1)| (((A&0x20)>>4)) );
break;
}
#ifdef moo
if(!(A&0x10))
ROM_BANK32(A&0xF);
else
{
ROM_BANK16(0x8000,((A&0xF)<<1)| (((A&0x10)>>4)^1) );
ROM_BANK16(0xC000,((A&0xF)<<1)| (((A&0x10)>>4)^1) );
}
#endif
MIRROR_SET((A&0x80)>>7);
}
void Mapper61_init(void)
{
SetWriteHandler(0x8000,0xffff,Mapper61_write);
}