mirror of
https://github.com/dborth/fceugx.git
synced 2024-12-27 00:51:53 +01:00
50 lines
1.3 KiB
C
50 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 DECLFW(Mapper57_write)
|
|
{
|
|
A&=0x8800;
|
|
if(A==0x8800)
|
|
{
|
|
mapbyte1[0]=V;
|
|
if(V&0x80)
|
|
ROM_BANK32(2|(V>>6));
|
|
else
|
|
{
|
|
ROM_BANK16(0x8000,(V>>5)&3);
|
|
ROM_BANK16(0xc000,(V>>5)&3);
|
|
}
|
|
MIRROR_SET((V&0x8)>>3);
|
|
}
|
|
else
|
|
mapbyte1[1]=V;
|
|
VROM_BANK8((mapbyte1[1]&3)|(mapbyte1[0]&7)|((mapbyte1[0]&0x10)>>1));
|
|
//printf("$%04x:$%02x\n",A,V);
|
|
}
|
|
|
|
void Mapper57_init(void)
|
|
{
|
|
SetWriteHandler(0x8000,0xffff,Mapper57_write);
|
|
}
|