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1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2007 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 |
20 | \r |
21 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 reg_prg[4];\r |
24 | static uint8 reg_chr[4];\r |
25 | static uint8 dip_switch;\r |
26 | \r |
27 | static SFORMAT StateRegs[]=\r |
28 | {\r |
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29 | {reg_prg, 4, "PREG"},\r |
30 | {reg_chr, 4, "CREG"},\r |
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31 | {0}\r |
32 | };\r |
33 | \r |
34 | static void Sync(void)\r |
35 | {\r |
36 | setprg8(0x8000,reg_prg[0]);\r |
37 | setprg8(0xa000,reg_prg[1]);\r |
38 | setprg8(0xc000,reg_prg[2]);\r |
39 | setprg8(0xe000,reg_prg[3]);\r |
40 | setchr2(0x0000,reg_chr[0]);\r |
41 | setchr2(0x0800,reg_chr[1]);\r |
42 | setchr2(0x1000,reg_chr[2]);\r |
43 | setchr2(0x1800,reg_chr[3]);\r |
44 | setmirror(MI_V);\r |
45 | }\r |
46 | \r |
47 | static DECLFW(MBS5Write)\r |
48 | {\r |
49 | int bank_sel = (A&0xC00)>>10;\r |
50 | switch (A&0xF000)\r |
51 | {\r |
52 | case 0x8000:\r |
53 | reg_chr[bank_sel]=A&0x1F;\r |
54 | break;\r |
55 | case 0xA000:\r |
56 | if(A&(1<<(dip_switch+4)))\r |
57 | reg_prg[bank_sel]=A&0x0F;\r |
58 | break;\r |
59 | }\r |
60 | Sync();\r |
61 | }\r |
62 | \r |
63 | static void MBS5Reset(void)\r |
64 | {\r |
65 | dip_switch++;\r |
66 | dip_switch&=3;\r |
67 | reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0; \r |
68 | Sync();\r |
69 | }\r |
70 | \r |
71 | static void MBS5Power(void)\r |
72 | {\r |
73 | dip_switch=0;\r |
74 | reg_prg[0]=reg_prg[1]=reg_prg[2]=reg_prg[3]=~0; \r |
75 | Sync();\r |
76 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
77 | SetWriteHandler(0x8000,0xFFFF,MBS5Write);\r |
78 | }\r |
79 | \r |
80 | static void StateRestore(int version)\r |
81 | {\r |
82 | Sync();\r |
83 | }\r |
84 | \r |
85 | void BMCBS5_Init(CartInfo *info)\r |
86 | {\r |
87 | info->Power=MBS5Power;\r |
88 | info->Reset=MBS5Reset;\r |
89 | GameStateRestore=StateRestore;\r |
90 | AddExState(&StateRegs, ~0, 0, 0);\r |
91 | }\r |