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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 //zero 14-apr-2012 - redid this entirely to match bizhawk
27 static void DoSync(uint32 A)
30 int M_horz = (A>>1)&1;
31 int p = (A >> 2) & 0x1F;
32 p += (A&0x100) ? 0x20 : 0;
44 ROM_BANK16(0xC000,p+1);
49 ROM_BANK16(0xC000,p&0x38);
53 ROM_BANK16(0x8000,p&0x3E);
54 ROM_BANK16(0xC000,p&0x38);
59 ROM_BANK16(0xC000,p|7);
63 ROM_BANK16(0x8000,p&0x3E);
64 ROM_BANK16(0xC000,p|7);
73 static DECLFW(Mapper227_write)
78 static void M227Reset(void)
83 static void M227Restore(int version)
85 DoSync(rg[0]|(rg[1]<<8));
88 void Mapper227_init(void)
90 SetWriteHandler(0x8000,0xffff,Mapper227_write);
91 MapperReset=M227Reset;
92 GameStateRestore=M227Restore;