88 lines
1.9 KiB
C++
88 lines
1.9 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 reg1 mapbyte1[0]
|
||
|
|
#define reg2 mapbyte1[1]
|
||
|
|
#define reg3 mapbyte1[2]
|
||
|
|
#define reg4 mapbyte1[3]
|
||
|
|
|
||
|
|
DECLFR(A110in1read)
|
||
|
|
{
|
||
|
|
switch(A&0x3)
|
||
|
|
{
|
||
|
|
case 0:return reg1;break;
|
||
|
|
case 1:return reg2;break;
|
||
|
|
case 2:return reg3;break;
|
||
|
|
case 3:return reg4;break;
|
||
|
|
}
|
||
|
|
return 0xF;
|
||
|
|
}
|
||
|
|
DECLFW(A110in1regwr)
|
||
|
|
{
|
||
|
|
switch(A&0x3)
|
||
|
|
{
|
||
|
|
case 0:reg1=V&0xF;break;
|
||
|
|
case 1:reg2=V&0xF;break;
|
||
|
|
case 2:reg3=V&0xF;break;
|
||
|
|
case 3:reg4=V&0xF;break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
DECLFW(Mapper225_write)
|
||
|
|
{
|
||
|
|
int banks=0;
|
||
|
|
|
||
|
|
MIRROR_SET((A>>13)&1);
|
||
|
|
if(A&0x4000)
|
||
|
|
banks=1;
|
||
|
|
else
|
||
|
|
banks=0;
|
||
|
|
|
||
|
|
VROM_BANK8(((A&0x003f)+(banks<<6)));
|
||
|
|
if(A&0x1000)
|
||
|
|
{
|
||
|
|
if(A&0x40)
|
||
|
|
{
|
||
|
|
ROM_BANK16(0x8000,((((((A>>7)&0x1F)+(banks<<5)))<<1)+1));
|
||
|
|
ROM_BANK16(0xC000,((((((A>>7)&0x1F)+(banks<<5)))<<1)+1));
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ROM_BANK16(0x8000,(((((A>>7)&0x1F)+(banks<<5)))<<1));
|
||
|
|
ROM_BANK16(0xC000,(((((A>>7)&0x1F)+(banks<<5)))<<1));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ROM_BANK32(((((A>>7)&0x1F)+(banks<<5))));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void Mapper225_init(void)
|
||
|
|
{
|
||
|
|
SetWriteHandler(0x8000,0xffff,Mapper225_write);
|
||
|
|
SetReadHandler(0x5800,0x5fff,A110in1read);
|
||
|
|
SetWriteHandler(0x5800,0x5fff,A110in1regwr);
|
||
|
|
}
|
||
|
|
|