mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 06:55:05 +01:00
54 lines
1.5 KiB
C
54 lines
1.5 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"
|
|
|
|
|
|
#define IREMCon mapbyte1[0]
|
|
|
|
static DECLFW(Mapper32_write)
|
|
{
|
|
switch(A>>12)
|
|
{
|
|
case 0x8:
|
|
mapbyte1[1]=V;
|
|
if(IREMCon) {ROM_BANK8(0xc000,V);ROM_BANK8(0x8000,~1);}
|
|
else {ROM_BANK8(0x8000,V);ROM_BANK8(0xc000,~1);}
|
|
break;
|
|
case 0x9:IREMCon=(V>>1)&1;
|
|
if(IREMCon) {ROM_BANK8(0xc000,mapbyte1[1]);ROM_BANK8(0x8000,~1);}
|
|
else {ROM_BANK8(0x8000,mapbyte1[1]); ROM_BANK8(0xc000,~1);}
|
|
MIRROR_SET(V&1);
|
|
break;
|
|
case 0xa:ROM_BANK8(0xA000,V);
|
|
break;
|
|
}
|
|
|
|
if((A&0xF000)==0xb000)
|
|
VROM_BANK1((A&0x7)<<10,V);
|
|
}
|
|
|
|
void Mapper32_init(void)
|
|
{
|
|
ROM_BANK16(0x8000,0);
|
|
ROM_BANK16(0xc000,~0);
|
|
SetWriteHandler(0x8000,0xffff,Mapper32_write);
|
|
}
|