+++ /dev/null
-/* 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 void Fixerit(void)
-{
- switch(mapbyte2[0]&3)
- {
- case 0:vnapage[0]=vnapage[2]=CHRptr[0]+(((mapbyte1[0]|128)&CHRmask1[0])<<10);
- vnapage[1]=vnapage[3]=CHRptr[0]+(((mapbyte1[1]|128)&CHRmask1[0])<<10);
- break;
- case 1:vnapage[0]=vnapage[1]=CHRptr[0]+(((mapbyte1[0]|128)&CHRmask1[0])<<10);
- vnapage[2]=vnapage[3]=CHRptr[0]+(((mapbyte1[1]|128)&CHRmask1[0])<<10);
- break;
- case 2:vnapage[0]=vnapage[1]=vnapage[2]=vnapage[3]=CHRptr[0]+(((mapbyte1[0]|128)&CHRmask1[0])<<10);
- break;
- case 3:vnapage[0]=vnapage[1]=vnapage[2]=vnapage[3]=CHRptr[0]+(((mapbyte1[1]|128)&CHRmask1[0])<<10);
- break;
- }
-}
-
-DECLFW(Mapper68_write)
-{
-// FCEU_printf("%04x,%04x\n",A,V);
- A&=0xF000;
-
- if(A>=0x8000 && A<=0xB000)
- {
- VROM_BANK2((A-0x8000)>>1,V);
- }
- else switch(A)
- {
- case 0xc000:mapbyte1[0]=V;
- if(VROM_size && mapbyte2[0]&0x10)
- Fixerit();
- break;
-
- case 0xd000:mapbyte1[1]=V;
- if(VROM_size && mapbyte2[0]&0x10)
- Fixerit();
- break;
-
- case 0xe000: mapbyte2[0]=V;
- if(!(V&0x10))
- {
- switch(V&3)
- {
- case 0:MIRROR_SET2(1);break;
- case 1:MIRROR_SET2(0);break;
- case 2:onemir(0);break;
- case 3:onemir(1);break;
- }
- }
- else if(VROM_size)
- {
- Fixerit();
- PPUNTARAM=0;
- }
- break;
- case 0xf000: ROM_BANK16(0x8000,V);break;
- }
-}
-
-static void Mapper68_StateRestore(int version)
-{
- if(!(mapbyte2[0]&0x10))
- {
- switch(mapbyte2[0]&3)
- {
- case 0:MIRROR_SET(0);break;
- case 1:MIRROR_SET(1);break;
- case 2:onemir(0);break;
- case 3:onemir(1);break;
- }
- }
- else if(VROM_size)
- {
- Fixerit();
- PPUNTARAM=0;
- }
-}
-
-void Mapper68_init(void)
-{
- SetWriteHandler(0x8000,0xffff,Mapper68_write);
- MapStateRestore=Mapper68_StateRestore;
-}