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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 |
20 | \r |
21 | #include "mapinc.h"\r |
22 | \r |
23 | static uint8 is_large_banks, hw_switch;\r |
24 | static uint8 large_bank;\r |
25 | static uint8 prg_bank;\r |
26 | static uint8 chr_bank;\r |
27 | static uint8 bank_mode;\r |
28 | static uint8 mirroring;\r |
29 | static SFORMAT StateRegs[]=\r |
30 | {\r |
31 | {&large_bank, 1, "LB"},\r |
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32 | {&hw_switch, 1, "DPSW"},\r |
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33 | {&prg_bank, 1, "PRG"},\r |
34 | {&chr_bank, 1, "CHR"},\r |
35 | {&bank_mode, 1, "BM"},\r |
36 | {&mirroring, 1, "MIRR"},\r |
37 | {0}\r |
38 | };\r |
39 | \r |
40 | static void Sync(void)\r |
41 | {\r |
42 | switch (bank_mode)\r |
43 | {\r |
44 | case 0x00:\r |
45 | case 0x10: setprg16(0x8000,large_bank|prg_bank);\r |
46 | setprg16(0xC000,large_bank|7);\r |
47 | break;\r |
48 | case 0x20: setprg32(0x8000,(large_bank|prg_bank)>>1);\r |
49 | break;\r |
50 | case 0x30: setprg16(0x8000,large_bank|prg_bank);\r |
51 | setprg16(0xC000,large_bank|prg_bank);\r |
52 | break;\r |
53 | }\r |
54 | setmirror(mirroring);\r |
55 | if(!is_large_banks)\r |
56 | setchr8(chr_bank);\r |
57 | }\r |
58 | \r |
59 | static DECLFR(BMC70in1Read)\r |
60 | {\r |
61 | if(bank_mode==0x10)\r |
62 | // if(is_large_banks)\r |
63 | return CartBR((A&0xFFF0)|hw_switch);\r |
64 | // else\r |
65 | // return CartBR((A&0xFFF0)|hw_switch);\r |
66 | else\r |
67 | return CartBR(A);\r |
68 | }\r |
69 | \r |
70 | static DECLFW(BMC70in1Write)\r |
71 | {\r |
72 | if(A&0x4000)\r |
73 | {\r |
74 | bank_mode=A&0x30;\r |
75 | prg_bank=A&7;\r |
76 | }\r |
77 | else\r |
78 | {\r |
79 | mirroring=((A&0x20)>>5)^1;\r |
80 | if(is_large_banks)\r |
81 | large_bank=(A&3)<<3;\r |
82 | else\r |
83 | chr_bank=A&7;\r |
84 | }\r |
85 | Sync();\r |
86 | }\r |
87 | \r |
88 | static void BMC70in1Reset(void)\r |
89 | {\r |
90 | bank_mode=0;\r |
91 | large_bank=0;\r |
92 | Sync();\r |
93 | hw_switch++;\r |
94 | hw_switch&=0xf;\r |
95 | }\r |
96 | \r |
97 | static void BMC70in1Power(void)\r |
98 | {\r |
99 | setchr8(0);\r |
100 | bank_mode=0;\r |
101 | large_bank=0;\r |
102 | Sync();\r |
103 | SetReadHandler(0x8000,0xFFFF,BMC70in1Read);\r |
104 | SetWriteHandler(0x8000,0xffff,BMC70in1Write);\r |
105 | }\r |
106 | \r |
107 | static void StateRestore(int version)\r |
108 | {\r |
109 | Sync();\r |
110 | }\r |
111 | \r |
112 | void BMC70in1_Init(CartInfo *info)\r |
113 | {\r |
114 | is_large_banks=0;\r |
115 | hw_switch=0xd;\r |
116 | info->Power=BMC70in1Power;\r |
117 | info->Reset=BMC70in1Reset;\r |
118 | GameStateRestore=StateRestore;\r |
119 | AddExState(&StateRegs, ~0, 0, 0);\r |
120 | }\r |
121 | \r |
122 | void BMC70in1B_Init(CartInfo *info)\r |
123 | {\r |
124 | is_large_banks=1;\r |
125 | hw_switch=0x6;\r |
126 | info->Power=BMC70in1Power;\r |
127 | info->Reset=BMC70in1Reset;\r |
128 | GameStateRestore=StateRestore;\r |
129 | AddExState(&StateRegs, ~0, 0, 0);\r |
130 | }\r |