386f5371 |
1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2008 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 | // T-227-1, 820632, MMC3 based, multimenu, 60000in1 (0010) dip switches\r |
22 | \r |
23 | #include "mapinc.h"\r |
24 | #include "mmc3.h"\r |
25 | \r |
26 | static uint8 reset_flag = 0x07;\r |
27 | \r |
28 | static void BMCT2271CW(uint32 A, uint8 V)\r |
29 | {\r |
30 | uint32 va = V; \r |
31 | if(EXPREGS[0]&0x20)\r |
32 | {\r |
33 | va|=0x200;\r |
34 | va|=(EXPREGS[0]&0x10)<<4;\r |
35 | }\r |
36 | else\r |
37 | {\r |
38 | va&=0x7F;\r |
39 | va|=(EXPREGS[0]&0x18)<<4;\r |
40 | }\r |
41 | setchr1(A,va);\r |
42 | }\r |
43 | \r |
44 | static void BMCT2271PW(uint32 A, uint8 V)\r |
45 | {\r |
46 | uint32 va = V & 0x3F; \r |
47 | if(EXPREGS[0]&0x20)\r |
48 | {\r |
49 | va&=0x1F;\r |
50 | va|=0x40;\r |
51 | va|=(EXPREGS[0]&0x10)<<1;\r |
52 | }\r |
53 | else\r |
54 | {\r |
55 | va&=0x0F;\r |
56 | va|=(EXPREGS[0]&0x18)<<1;\r |
57 | }\r |
58 | switch(EXPREGS[0]&3)\r |
59 | {\r |
60 | case 0x00: setprg8(A,va); break;\r |
61 | case 0x02: \r |
62 | {\r |
63 | va=(va&0xFD)|((EXPREGS[0]&4)>>1);\r |
64 | if(A<0xC000)\r |
65 | {\r |
66 | setprg16(0x8000,va >> 1); \r |
67 | setprg16(0xC000,va >> 1); \r |
68 | }\r |
69 | break;\r |
70 | }\r |
71 | case 0x01: \r |
72 | case 0x03: if(A<0xC000) setprg32(0x8000,va >> 2); break;\r |
73 | }\r |
74 | \r |
75 | }\r |
76 | \r |
77 | static DECLFW(BMCT2271LoWrite)\r |
78 | {\r |
79 | if(!(EXPREGS[0]&0x80))\r |
80 | EXPREGS[0] = A & 0xFF;\r |
81 | FixMMC3PRG(MMC3_cmd);\r |
82 | FixMMC3CHR(MMC3_cmd);\r |
83 | }\r |
84 | \r |
85 | static DECLFR(BMCT2271HiRead)\r |
86 | {\r |
87 | uint32 av = A;\r |
88 | if(EXPREGS[0]&0x40) av = (av & 0xFFF0)|reset_flag;\r |
89 | return CartBR(av);\r |
90 | }\r |
91 | \r |
92 | static void BMCT2271Reset(void)\r |
93 | {\r |
94 | EXPREGS[0] = 0x00;\r |
95 | reset_flag++;\r |
96 | reset_flag&=0x0F;\r |
97 | MMC3RegReset();\r |
98 | }\r |
99 | \r |
100 | static void BMCT2271Power(void)\r |
101 | {\r |
102 | EXPREGS[0] = 0x00;\r |
103 | GenMMC3Power();\r |
104 | SetWriteHandler(0x6000,0x7FFF,BMCT2271LoWrite);\r |
105 | SetReadHandler(0x8000,0xFFFF,BMCT2271HiRead);\r |
106 | }\r |
107 | \r |
108 | void BMCT2271_Init(CartInfo *info)\r |
109 | {\r |
110 | GenMMC3_Init(info, 128, 128, 8, 0);\r |
111 | pwrap=BMCT2271PW;\r |
112 | cwrap=BMCT2271CW;\r |
113 | info->Power=BMCT2271Power;\r |
114 | info->Reset=BMCT2271Reset;\r |
115 | AddExState(EXPREGS, 1, 0, "EXPR");\r |
116 | }\r |