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
23 static DECLFW(Mapper228_write)
25 uint32 page,pagel,pageh;
27 MIRROR_SET((A>>13)&1);
33 pagel=pageh=(page<<1) + (((A>>6)&1)&((A>>5)&1));
36 ROM_BANK16(0x8000,pagel);
37 ROM_BANK16(0xC000,pageh);
38 VROM_BANK8( (V&0x3) | ((A&0xF)<<2) );
42 static void A52Reset(void)
47 void Mapper228_init(void)
51 SetWriteHandler(0x8000,0xffff,Mapper228_write);