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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 | * Family Study Box by Fukutake Shoten\r |
21 | */\r |
22 | \r |
23 | #include "mapinc.h"\r |
24 | \r |
25 | static uint8 SWRAM[2816];\r |
26 | static uint8 *WRAM=NULL;\r |
27 | static uint8 regs[4];\r |
28 | \r |
29 | static SFORMAT StateRegs[]=\r |
30 | {\r |
31 | {regs, 4, "DREG"},\r |
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32 | {SWRAM, 2816, "SWRM"},\r |
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33 | {0}\r |
34 | };\r |
35 | \r |
36 | static void Sync(void)\r |
37 | {\r |
38 | setprg8r(0x10,0x6000,regs[0]>>6);\r |
39 | setprg16(0x8000,regs[1]);\r |
40 | setprg16(0xc000,0);\r |
41 | }\r |
42 | \r |
43 | static DECLFW(M186Write)\r |
44 | {\r |
45 | if(A&0x4203) regs[A&3]=V;\r |
46 | Sync();\r |
47 | }\r |
48 | \r |
49 | static DECLFR(M186Read)\r |
50 | {\r |
51 | switch(A)\r |
52 | {\r |
53 | case 0x4200: return 0x00; break;\r |
54 | case 0x4201: return 0x00; break;\r |
55 | case 0x4202: return 0x40; break;\r |
56 | case 0x4203: return 0x00; break;\r |
57 | }\r |
58 | return 0xFF;\r |
59 | }\r |
60 | \r |
61 | static DECLFR(ASWRAM)\r |
62 | {\r |
63 | return(SWRAM[A-0x4400]);\r |
64 | }\r |
65 | static DECLFW(BSWRAM)\r |
66 | {\r |
67 | SWRAM[A-0x4400]=V;\r |
68 | }\r |
69 | \r |
70 | static void M186Power(void)\r |
71 | {\r |
72 | setchr8(0);\r |
73 | SetReadHandler(0x6000,0xFFFF,CartBR);\r |
74 | SetWriteHandler(0x6000,0xFFFF,CartBW);\r |
75 | SetReadHandler(0x4200,0x43FF,M186Read);\r |
76 | SetWriteHandler(0x4200,0x43FF,M186Write);\r |
77 | SetReadHandler(0x4400,0x4EFF,ASWRAM);\r |
78 | SetWriteHandler(0x4400,0x4EFF,BSWRAM);\r |
79 | regs[0]=regs[1]=regs[2]=regs[3];\r |
80 | Sync();\r |
81 | }\r |
82 | \r |
83 | static void M186Close(void)\r |
84 | {\r |
85 | if(WRAM)\r |
86 | FCEU_gfree(WRAM);\r |
87 | WRAM=NULL;\r |
88 | }\r |
89 | \r |
90 | static void M186Restore(int version)\r |
91 | {\r |
92 | Sync();\r |
93 | }\r |
94 | \r |
95 | void Mapper186_Init(CartInfo *info)\r |
96 | {\r |
97 | info->Power=M186Power;\r |
98 | info->Close=M186Close;\r |
99 | GameStateRestore=M186Restore;\r |
100 | WRAM=(uint8*)FCEU_gmalloc(32768);\r |
101 | SetupCartPRGMapping(0x10,WRAM,32768,1);\r |
102 | AddExState(WRAM, 32768, 0, "WRAM");\r |
103 | AddExState(StateRegs, ~0, 0, 0);\r |
104 | }\r |