386f5371 |
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 |
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
19 | */\r |
20 | \r |
21 | #include "mapinc.h"\r |
22 | #include "mmc3.h"\r |
23 | \r |
24 | static void M187CW(uint32 A, uint8 V)\r |
25 | {\r |
26 | if((A&0x1000)==((MMC3_cmd&0x80)<<5))\r |
27 | setchr1(A,V|0x100);\r |
28 | else\r |
29 | setchr1(A,V);\r |
30 | }\r |
31 | \r |
32 | static void M187PW(uint32 A, uint8 V)\r |
33 | {\r |
34 | if(EXPREGS[0]&0x80)\r |
35 | {\r |
36 | uint8 bank=EXPREGS[0]&0x1F;\r |
37 | if(EXPREGS[0]&0x20)\r |
38 | setprg32(0x8000,bank>>2);\r |
39 | else\r |
40 | {\r |
41 | setprg16(0x8000,bank);\r |
42 | setprg16(0xC000,bank);\r |
43 | }\r |
44 | }\r |
45 | else\r |
46 | setprg8(A,V&0x3F);\r |
47 | }\r |
48 | \r |
49 | static DECLFW(M187Write8000)\r |
50 | {\r |
51 | EXPREGS[2]=1;\r |
52 | MMC3_CMDWrite(A,V);\r |
53 | }\r |
54 | \r |
55 | static DECLFW(M187Write8001)\r |
56 | {\r |
57 | if(EXPREGS[2])\r |
58 | MMC3_CMDWrite(A,V);\r |
59 | }\r |
60 | \r |
61 | static DECLFW(M187Write8003)\r |
62 | {\r |
63 | EXPREGS[2]=0;\r |
64 | if(V==0x28)setprg8(0xC000,0x17);\r |
65 | else if(V==0x2A)setprg8(0xA000,0x0F);\r |
66 | }\r |
67 | \r |
68 | \r |
69 | static DECLFW(M187WriteLo)\r |
70 | {\r |
71 | EXPREGS[1]=V;\r |
72 | if(A==0x5000)\r |
73 | {\r |
74 | EXPREGS[0]=V;\r |
75 | FixMMC3PRG(MMC3_cmd);\r |
76 | }\r |
77 | }\r |
78 | \r |
79 | static uint8 prot_data[4] = { 0x83, 0x83, 0x42, 0x00 };\r |
80 | static DECLFR(M187Read)\r |
81 | {\r |
82 | return prot_data[EXPREGS[1]&3];\r |
83 | }\r |
84 | \r |
85 | static void M187Power(void)\r |
86 | {\r |
87 | EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=0;\r |
88 | GenMMC3Power();\r |
89 | SetReadHandler(0x5000,0x5FFF,M187Read);\r |
90 | SetWriteHandler(0x5000,0x5FFF,M187WriteLo);\r |
91 | SetWriteHandler(0x8000,0x8000,M187Write8000);\r |
92 | SetWriteHandler(0x8001,0x8001,M187Write8001);\r |
93 | SetWriteHandler(0x8003,0x8003,M187Write8003);\r |
94 | }\r |
95 | \r |
96 | void Mapper187_Init(CartInfo *info)\r |
97 | {\r |
98 | GenMMC3_Init(info, 256, 256, 0, 0);\r |
99 | pwrap=M187PW;\r |
100 | cwrap=M187CW;\r |
101 | info->Power=M187Power;\r |
102 | AddExState(EXPREGS, 3, 0, "EXPR");\r |
103 | }\r |