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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 | * BMC 42-in-1 reset switch |
21 | */ |
22 | |
23 | #include "mapinc.h" |
24 | |
25 | static uint8 hrd_sw; |
26 | static uint8 latche; |
27 | static SFORMAT StateRegs[]= |
28 | { |
29 | {&latche, 1, "LATCHE"}, |
30 | {&hrd_sw, 1, "HRDSW"}, |
31 | {0} |
32 | }; |
33 | |
34 | static void Sync(void) |
35 | { |
36 | if(!(latche&0x20)) |
37 | setprg32r(hrd_sw,0x8000,(latche>>1)&0x0f); |
38 | else |
39 | { |
40 | setprg16r(hrd_sw,0x8000,latche&0x1f); |
41 | setprg16r(hrd_sw,0xC000,latche&0x1f); |
42 | } |
43 | switch((latche>>6)&3) |
44 | { |
45 | case 0: setmirrorw(0,0,0,1); break; |
46 | case 1: setmirror(MI_V); break; |
47 | case 2: setmirror(MI_H); break; |
48 | case 3: setmirror(MI_1); break; |
49 | } |
50 | } |
51 | |
52 | static DECLFW(BMC42in1rWrite) |
53 | { |
54 | latche=V; |
55 | Sync(); |
56 | } |
57 | |
58 | static void BMC42in1rReset(void) |
59 | { |
60 | hrd_sw^=1; |
61 | Sync(); |
62 | } |
63 | |
64 | static void BMC42in1rPower(void) |
65 | { |
66 | latche=0x00; |
67 | hrd_sw=0; |
68 | setchr8(0); |
69 | Sync(); |
70 | SetWriteHandler(0x8000,0xFFFF,BMC42in1rWrite); |
71 | SetReadHandler(0x8000,0xFFFF,CartBR); |
72 | } |
73 | |
74 | static void StateRestore(int version) |
75 | { |
76 | Sync(); |
77 | } |
78 | |
79 | void BMC42in1r_Init(CartInfo *info) |
80 | { |
81 | info->Power=BMC42in1rPower; |
82 | info->Reset=BMC42in1rReset; |
83 | AddExState(&StateRegs, ~0, 0, 0); |
84 | GameStateRestore=StateRestore; |
85 | } |
86 | |
87 | |