d97315ac |
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 uint8 reg[8]; |
24 | static uint8 mirror, cmd; |
25 | static uint8 *WRAM=NULL; |
26 | static SFORMAT StateRegs[]= |
27 | { |
28 | {&cmd, 1, "CMD"}, |
29 | {&mirror, 1, "MIRR"}, |
30 | {reg, 8, "REGS"}, |
31 | {0} |
32 | }; |
33 | |
34 | static void Sync(void) |
35 | { |
36 | setmirror(mirror^1); |
37 | setprg8(0x8000,reg[0]); |
38 | setprg8(0xA000,reg[1]); |
39 | setchr2(0x0000,reg[2]>>1); |
40 | setchr2(0x0800,reg[3]>>1); |
41 | setchr1(0x1000,reg[4]); |
42 | setchr1(0x1400,reg[5]); |
43 | setchr1(0x1800,reg[6]); |
44 | setchr1(0x1C00,reg[7]); |
45 | } |
46 | |
47 | static DECLFW(M112Write) |
48 | { |
49 | switch(A) |
50 | { |
51 | case 0xe000: mirror=V&1; Sync(); ;break; |
52 | case 0x8000: cmd=V&7; break; |
53 | case 0xa000: reg[cmd]=V; Sync(); break; |
54 | } |
55 | } |
56 | |
57 | static void M112Close(void) |
58 | { |
59 | if(WRAM) |
60 | FCEU_gfree(WRAM); |
61 | WRAM = NULL; |
62 | } |
63 | |
64 | static void M112Power(void) |
65 | { |
66 | Sync(); |
67 | setprg16(0xC000,~0); |
68 | setprg8r(0x10,0x6000,0); |
69 | SetReadHandler(0x8000,0xFFFF,CartBR); |
70 | SetWriteHandler(0x8000,0xFFFF,M112Write); |
71 | SetReadHandler(0x6000,0x7FFF,CartBR); |
72 | SetWriteHandler(0x6000,0x7FFF,CartBW); |
73 | } |
74 | |
75 | static void StateRestore(int version) |
76 | { |
77 | Sync(); |
78 | } |
79 | |
80 | void Mapper112_Init(CartInfo *info) |
81 | { |
82 | info->Power=M112Power; |
83 | info->Close=M112Close; |
84 | GameStateRestore=StateRestore; |
85 | WRAM=(uint8*)FCEU_gmalloc(8192); |
86 | SetupCartPRGMapping(0x10,WRAM,8192,1); |
87 | AddExState(WRAM, 8192, 0, "WRAM"); |
88 | AddExState(&StateRegs, ~0, 0, 0); |
89 | } |