1 /* FCE Ultra - NES/Famicom Emulator
3 * Copyright notice for this file:
4 * Copyright (C) 2002 Ben Parnell
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #define suntoggle mapbyte1[0]
26 DECLFW(Mapper67_write)
29 if((A&0x800) && A<=0xb800)
31 VROM_BANK2((A-0x8800)>>1,V);
36 case 0xc000:if(!suntoggle)
37 {IRQCount&=0xFF;IRQCount|=V<<8;}
38 else{IRQCount&=0xFF00;IRQCount|=V;}
41 case 0xd800:suntoggle=0;IRQa=V&0x10;break;
43 case 0xe800:switch(V&3)
45 case 0:MIRROR_SET2(1);break;
46 case 1:MIRROR_SET2(0);break;
47 case 2:onemir(0);break;
48 case 3:onemir(1);break;
51 case 0xf800:ROM_BANK16(0x8000,V);break;
54 static void FP_FASTAPASS(1) SunIRQHook(int a)
60 {TriggerIRQ();IRQa=0;IRQCount=0xFFFF;}
63 void Mapper67_init(void)
65 SetWriteHandler(0x8000,0xffff,Mapper67_write);
66 MapIRQHook=SunIRQHook;