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1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
5 | * |
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. |
10 | * |
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. |
15 | * |
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 |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
23 | static void DoIt(void) |
24 | { |
25 | ROM_BANK16(0x8000,(mapbyte1[1]&3) | ((mapbyte1[0]&0x18)>>1)); |
26 | ROM_BANK16(0xc000,3|(((mapbyte1[0])&0x18)>>1)); |
27 | } |
28 | |
29 | DECLFW(Mapper232_write) |
30 | { |
31 | if(A<=0x9FFF) |
32 | mapbyte1[0]=V; |
33 | else |
34 | mapbyte1[1]=V; |
35 | DoIt(); |
36 | } |
37 | |
38 | static void QuattroReset(void) |
39 | { |
40 | mapbyte1[0]=0x18; |
41 | DoIt(); |
42 | } |
43 | |
44 | void Mapper232_init(void) |
45 | { |
46 | SetWriteHandler(0x6000,0xffff,Mapper232_write); |
47 | MapperReset=QuattroReset; |
48 | QuattroReset(); |
49 | } |
50 | |