c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
43725da7 |
4 | * Copyright (C) 2011 CaH4e3 |
c62d2810 |
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 |
43725da7 |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
c62d2810 |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
43725da7 |
23 | static uint8 prg_perm[4][4] = { |
24 | {0, 1, 2, 3,}, |
25 | {3, 2, 1, 0,}, |
26 | {0, 2, 1, 3,}, |
27 | {3, 1, 2, 0,}, |
28 | }; |
29 | |
30 | static uint8 chr_perm[8][8] = { |
31 | {0, 1, 2, 3, 4, 5, 6, 7,}, |
32 | {0, 2, 1, 3, 4, 6, 5, 7,}, |
33 | {0, 1, 4, 5, 2, 3, 6, 7,}, |
34 | {0, 4, 1, 5, 2, 6, 3, 7,}, |
35 | {0, 4, 2, 6, 1, 5, 3, 7,}, |
36 | {0, 2, 4, 6, 1, 3, 5, 7,}, |
37 | {7, 6, 5, 4, 3, 2, 1, 0,}, |
38 | {7, 6, 5, 4, 3, 2, 1, 0,}, |
39 | }; |
c62d2810 |
40 | |
43725da7 |
41 | static DECLFW(Mapper244_write) |
c62d2810 |
42 | { |
43725da7 |
43 | if(V&8) |
44 | VROM_BANK8(chr_perm[(V>>4)&7][V&7]); |
45 | else |
46 | ROM_BANK32(prg_perm[(V>>4)&3][V&3]); |
c62d2810 |
47 | } |
48 | |
d97315ac |
49 | void Mapper244_init(void) |
50 | { |
51 | ROM_BANK32(0); |
43725da7 |
52 | SetWriteHandler(0x8000,0xffff,Mapper244_write); |
d97315ac |
53 | } |