1 /* FCE Ultra - NES/Famicom Emulator
3 * Copyright notice for this file:
4 * Copyright (C) 2002 Xodnizel
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
25 static DECLFW(Mapper255_write)
27 uint32 pbank=(A>>7)&0x1F;
29 uint32 rbank=(A>>14)&1;
31 // printf("$%04x:$%02x\n",A,V);
32 // printf("%2x:%2x:%2x,%2x\n",pbank,cbank,rbank,(A&0x40)>>6);
36 ROM_BANK16(0x8000,((pbank|(rbank<<5))<<1)|((A&0x40)>>6));
37 ROM_BANK16(0xc000,((pbank|(rbank<<5))<<1)|((A&0x40)>>6));
41 ROM_BANK32(pbank|(rbank<<5));
43 MIRROR_SET((A>>13)&1);
44 VROM_BANK8((rbank<<6)|cbank);
47 static DECLFW(Mapper255_wl)
49 // printf("Wr: $%04x:$%02x\n",A,V);
53 static DECLFR(Mapper255_read)
55 //printf("Rd: $%04x\n",A);
56 return(mapbyte1[A&3]); //|(X.DB&0xF0));
59 void Mapper255_init(void)
61 mapbyte1[0]=mapbyte1[1]=0xF;
64 SetWriteHandler(0x5800,0x5FFF,Mapper255_wl);
65 SetWriteHandler(0x8000,0xffff,Mapper255_write);
66 SetReadHandler(0x5800,0x5FFF,Mapper255_read);