c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
d97315ac |
4 | * Copyright (C) 2002 Xodnizel |
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 |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | */ |
20 | |
21 | #include "mapinc.h" |
22 | |
d97315ac |
23 | static uint8 DReg; |
24 | static SFORMAT StateRegs[]= |
c62d2810 |
25 | { |
d97315ac |
26 | {&DReg, 1, "DREG"}, |
27 | {0} |
28 | }; |
29 | |
30 | static void Sync(void) |
31 | { |
32 | if(DReg) |
33 | { |
34 | if(DReg & 0x10) |
35 | setprg16(0x8000,(DReg&7)); |
36 | else |
37 | setprg16(0x8000,(DReg&7)|8); |
38 | } |
39 | else |
40 | setprg16(0x8000,7); |
c62d2810 |
41 | } |
d97315ac |
42 | |
43 | static void StateRestore(int version) |
c62d2810 |
44 | { |
d97315ac |
45 | Sync(); |
c62d2810 |
46 | } |
47 | |
d97315ac |
48 | static DECLFW(M188Write) |
c62d2810 |
49 | { |
d97315ac |
50 | DReg=V; |
51 | Sync(); |
c62d2810 |
52 | } |
53 | |
d97315ac |
54 | static DECLFR(testr) |
55 | { |
56 | return(3); |
57 | } |
58 | |
59 | |
60 | static void Power(void) |
61 | { |
62 | setchr8(0); |
63 | setprg8(0xc000,0xE); |
64 | setprg8(0xe000,0xF); |
65 | DReg = 0; |
66 | Sync(); |
67 | SetReadHandler(0x6000,0x7FFF,testr); |
68 | SetReadHandler(0x8000,0xFFFF,CartBR); |
69 | SetWriteHandler(0x8000,0xFFFF,M188Write); |
70 | } |
71 | |
72 | |
73 | void Mapper188_Init(CartInfo *info) |
74 | { |
75 | info->Power=Power; |
76 | GameStateRestore=StateRestore; |
77 | AddExState(&StateRegs, ~0, 0, 0); |
78 | } |