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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 | |
21 | #include "mapinc.h" |
22 | |
23 | static uint8 reg[8]; |
24 | static uint8 mirror, cmd; |
25 | static uint8 *WRAM=NULL; |
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26 | |
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27 | static SFORMAT StateRegs[]= |
28 | { |
29 | {&cmd, 1, "CMD"}, |
30 | {&mirror, 1, "MIRR"}, |
31 | {reg, 8, "REGS"}, |
32 | {0} |
33 | }; |
34 | |
35 | static void Sync(void) |
36 | { |
37 | setmirror(mirror^1); |
38 | setprg8(0x8000,reg[0]); |
39 | setprg8(0xA000,reg[1]); |
40 | setchr2(0x0000,reg[2]>>1); |
41 | setchr2(0x0800,reg[3]>>1); |
42 | setchr1(0x1000,reg[4]); |
43 | setchr1(0x1400,reg[5]); |
44 | setchr1(0x1800,reg[6]); |
45 | setchr1(0x1C00,reg[7]); |
46 | } |
47 | |
48 | static DECLFW(M112Write) |
49 | { |
50 | switch(A) |
51 | { |
52 | case 0xe000: mirror=V&1; Sync(); ;break; |
53 | case 0x8000: cmd=V&7; break; |
54 | case 0xa000: reg[cmd]=V; Sync(); break; |
55 | } |
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56 | FCEU_printf("%04x:%04x %d\n",A,V,scanline); |
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57 | } |
58 | |
59 | static void M112Close(void) |
60 | { |
61 | if(WRAM) |
62 | FCEU_gfree(WRAM); |
63 | WRAM = NULL; |
64 | } |
65 | |
66 | static void M112Power(void) |
67 | { |
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68 | setprg16(0xC000,~0); |
69 | setprg8r(0x10,0x6000,0); |
70 | SetReadHandler(0x8000,0xFFFF,CartBR); |
71 | SetWriteHandler(0x8000,0xFFFF,M112Write); |
72 | SetReadHandler(0x6000,0x7FFF,CartBR); |
73 | SetWriteHandler(0x6000,0x7FFF,CartBW); |
74 | } |
75 | |
76 | static void StateRestore(int version) |
77 | { |
78 | Sync(); |
79 | } |
80 | |
81 | void Mapper112_Init(CartInfo *info) |
82 | { |
83 | info->Power=M112Power; |
84 | info->Close=M112Close; |
85 | GameStateRestore=StateRestore; |
86 | WRAM=(uint8*)FCEU_gmalloc(8192); |
87 | SetupCartPRGMapping(0x10,WRAM,8192,1); |
88 | AddExState(WRAM, 8192, 0, "WRAM"); |
89 | AddExState(&StateRegs, ~0, 0, 0); |
90 | } |