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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 bank_mode; |
26 | static uint8 bank_value; |
27 | static uint8 prgb[4]; |
28 | static SFORMAT StateRegs[]= |
29 | { |
30 | {0} |
31 | }; |
32 | |
33 | static void Sync(void) |
34 | { |
35 | FCEU_printf("%02x: %02x %02x\n", bank_mode, bank_value, prgb[0]); |
36 | switch(bank_mode&7) |
37 | { |
38 | case 0: |
39 | setprg32(0x8000,bank_value&7); break; |
40 | case 1: |
41 | setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]); |
42 | setprg16(0xC000,(bank_value&7)>>1); |
43 | case 4: |
44 | setprg32(0x8000,8+(bank_value&7)); break; |
45 | case 5: |
46 | setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]); |
47 | setprg16(0xC000,((8+(bank_value&7))>>1)+prgb[3]); |
48 | case 2: |
49 | setprg8(0x8000,prgb[0]>>2); |
50 | setprg8(0xa000,prgb[1]); |
51 | setprg8(0xc000,prgb[2]); |
52 | setprg8(0xe000,~0); |
53 | break; |
54 | case 3: |
55 | setprg8(0x8000,prgb[0]); |
56 | setprg8(0xa000,prgb[1]); |
57 | setprg8(0xc000,prgb[2]); |
58 | setprg8(0xe000,prgb[3]); |
59 | break; |
60 | } |
61 | } |
62 | |
63 | static DECLFW(BMC13in1JY110Write) |
64 | { |
65 | FCEU_printf("%04x:%04x\n",A,V); |
66 | switch(A) |
67 | { |
68 | case 0x8000: |
69 | case 0x8001: |
70 | case 0x8002: |
71 | case 0x8003: prgb[A&3]=V; break; |
72 | case 0xD000: bank_mode=V; break; |
73 | case 0xD001: setmirror(V&3); |
74 | case 0xD002: break; |
75 | case 0xD003: bank_value=V; break; |
76 | } |
77 | Sync(); |
78 | } |
79 | |
80 | static void BMC13in1JY110Power(void) |
81 | { |
82 | prgb[0]=prgb[1]=prgb[2]=prgb[3]=0; |
83 | bank_mode=0; |
84 | bank_value=0; |
85 | setprg32(0x8000,0); |
86 | setchr8(0); |
87 | SetWriteHandler(0x8000,0xFFFF,BMC13in1JY110Write); |
88 | SetReadHandler(0x8000,0xFFFF,CartBR); |
89 | } |
90 | |
91 | static void StateRestore(int version) |
92 | { |
93 | Sync(); |
94 | } |
95 | |
96 | void BMC13in1JY110_Init(CartInfo *info) |
97 | { |
98 | info->Power=BMC13in1JY110Power; |
99 | AddExState(&StateRegs, ~0, 0, 0); |
100 | GameStateRestore=StateRestore; |
101 | } |
102 | |
103 | |