e2d0dd92 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2005 CaH4e3 |
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 uint16 cmdreg; |
24 | static SFORMAT StateRegs[]= |
25 | { |
26 | {&cmdreg, 2, "CMDREG"}, |
27 | {0} |
28 | }; |
29 | |
30 | static void Sync(void) |
31 | { |
32 | if(cmdreg&0x400) |
33 | setmirror(MI_0); |
34 | else |
35 | setmirror(((cmdreg>>13)&1)^1); |
36 | if(cmdreg&0x800) |
37 | { |
38 | setprg16(0x8000,((cmdreg&0x300)>>3)|((cmdreg&0x1F)<<1)|((cmdreg>>12)&1)); |
39 | setprg16(0xC000,((cmdreg&0x300)>>3)|((cmdreg&0x1F)<<1)|((cmdreg>>12)&1)); |
40 | } |
41 | else |
42 | setprg32(0x8000,((cmdreg&0x300)>>4)|(cmdreg&0x1F)); |
43 | } |
44 | |
45 | static DECLFW(M235Write) |
46 | { |
47 | cmdreg=A; |
48 | Sync(); |
49 | } |
50 | |
51 | static void M235Power(void) |
52 | { |
53 | setchr8(0); |
54 | SetWriteHandler(0x8000,0xFFFF,M235Write); |
55 | SetReadHandler(0x8000,0xFFFF,CartBR); |
56 | cmdreg=0; |
57 | Sync(); |
58 | } |
59 | |
60 | static void M235Restore(int version) |
61 | { |
62 | Sync(); |
63 | } |
64 | |
65 | void Mapper235_Init(CartInfo *info) |
66 | { |
67 | info->Power=M235Power; |
68 | GameStateRestore=M235Restore; |
69 | AddExState(&StateRegs, ~0, 0, 0); |
70 | } |