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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2005 CaH4e3\r |
5 | *\r |
6 | * This program is free software; you can redistribute it and/or modify\r |
7 | * it under the terms of the GNU General Public License as published by\r |
8 | * the Free Software Foundation; either version 2 of the License, or\r |
9 | * (at your option) any later version.\r |
10 | *\r |
11 | * This program is distributed in the hope that it will be useful,\r |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
14 | * GNU General Public License for more details.\r |
15 | *\r |
16 | * You should have received a copy of the GNU General Public License\r |
17 | * along with this program; if not, write to the Free Software\r |
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18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r |
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19 | *\r |
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20 | * BMC 42-in-1 "reset switch" type\r |
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21 | */\r |
22 | \r |
23 | #include "mapinc.h"\r |
24 | \r |
25 | static uint8 regs[4];\r |
26 | \r |
27 | static SFORMAT StateRegs[]=\r |
28 | {\r |
29 | {regs, 4, "REGS"},\r |
30 | {0}\r |
31 | };\r |
32 | \r |
33 | static void Sync(void)\r |
34 | {\r |
35 | if(regs[0]&0x80)\r |
36 | {\r |
37 | if(regs[1]&0x80)\r |
38 | setprg32(0x8000,regs[1]&0x1F);\r |
39 | else\r |
40 | {\r |
41 | int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);\r |
42 | setprg16(0x8000,bank);\r |
43 | setprg16(0xC000,bank);\r |
44 | }\r |
45 | }\r |
46 | else\r |
47 | {\r |
48 | int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);\r |
49 | setprg16(0xC000,bank);\r |
50 | }\r |
51 | if(regs[0]&0x20)\r |
52 | setmirror(MI_H);\r |
53 | else\r |
54 | setmirror(MI_V);\r |
55 | setchr8((regs[2]<<2)|((regs[0]>>1)&3));\r |
56 | }\r |
57 | \r |
58 | static DECLFW(BMC64in1nrWriteLo)\r |
59 | {\r |
60 | regs[A&3]=V;\r |
61 | Sync();\r |
62 | }\r |
63 | \r |
64 | static DECLFW(BMC64in1nrWriteHi)\r |
65 | {\r |
66 | regs[3]=V;\r |
67 | Sync();\r |
68 | }\r |
69 | \r |
70 | static void BMC64in1nrPower(void)\r |
71 | {\r |
72 | regs[0]=0x80;\r |
73 | regs[1]=0x43;\r |
74 | regs[2]=regs[3]=0;\r |
75 | Sync();\r |
76 | SetWriteHandler(0x5000,0x5003,BMC64in1nrWriteLo);\r |
77 | SetWriteHandler(0x8000,0xFFFF,BMC64in1nrWriteHi);\r |
78 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
79 | }\r |
80 | \r |
81 | static void StateRestore(int version)\r |
82 | {\r |
83 | Sync();\r |
84 | }\r |
85 | \r |
86 | void BMC64in1nr_Init(CartInfo *info)\r |
87 | {\r |
88 | info->Power=BMC64in1nrPower;\r |
89 | AddExState(&StateRegs, ~0, 0, 0);\r |
90 | GameStateRestore=StateRestore;\r |
91 | }\r |
92 | \r |
93 | \r |