386f5371 |
1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2007 CaH4e3\r |
5 | * Copyright (C) 2012 FCEUX team\r |
6 | *\r |
7 | * This program is free software; you can redistribute it and/or modify\r |
8 | * it under the terms of the GNU General Public License as published by\r |
9 | * the Free Software Foundation; either version 2 of the License, or\r |
10 | * (at your option) any later version.\r |
11 | *\r |
12 | * This program is distributed in the hope that it will be useful,\r |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r |
15 | * GNU General Public License for more details.\r |
16 | *\r |
17 | * You should have received a copy of the GNU General Public License\r |
18 | * along with this program; if not, write to the Free Software\r |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA\r |
20 | */\r |
21 | \r |
22 | #include "mapinc.h"\r |
23 | \r |
24 | extern uint32 ROM_size;\r |
25 | \r |
26 | static uint8 prg[4], chr, sbw, we_sram;\r |
27 | static uint8 *WRAM=NULL;\r |
28 | static uint32 WRAMSIZE;\r |
29 | \r |
30 | static SFORMAT StateRegs[]=\r |
31 | {\r |
32 | {prg, 4, "PRG"},\r |
33 | {&chr, 1, "CHR"},\r |
34 | {&sbw, 1, "SBW"},\r |
35 | {0}\r |
36 | };\r |
37 | \r |
38 | static void Sync(void)\r |
39 | {\r |
40 | setprg8r(0x10,0x6000,0);\r |
41 | setprg8(0x8000,prg[0]);\r |
42 | setprg8(0xA000,prg[1]);\r |
43 | setprg8(0xC000,prg[2]);\r |
44 | setprg8(0xE000,prg[3]);\r |
45 | \r |
46 | setchr8(chr);\r |
47 | }\r |
48 | \r |
49 | static DECLFW(M176Write_5001)\r |
50 | { \r |
51 | printf("%04X = $%02X\n",A,V);\r |
52 | if(sbw)\r |
53 | {\r |
54 | prg[0] = V*4;\r |
55 | prg[1] = V*4+1;\r |
56 | prg[2] = V*4+2;\r |
57 | prg[3] = V*4+3;\r |
58 | }\r |
59 | Sync();\r |
60 | }\r |
61 | \r |
62 | static DECLFW(M176Write_5010)\r |
63 | { \r |
64 | printf("%04X = $%02X\n",A,V);\r |
65 | if(V == 0x24) sbw = 1;\r |
66 | Sync();\r |
67 | }\r |
68 | \r |
69 | static DECLFW(M176Write_5011)\r |
70 | { \r |
71 | printf("%04X = $%02X\n",A,V);\r |
72 | V >>= 1;\r |
73 | if(sbw)\r |
74 | {\r |
75 | prg[0] = V*4;\r |
76 | prg[1] = V*4+1;\r |
77 | prg[2] = V*4+2;\r |
78 | prg[3] = V*4+3;\r |
79 | }\r |
80 | Sync();\r |
81 | }\r |
82 | \r |
83 | static DECLFW(M176Write_5FF1)\r |
84 | { \r |
85 | printf("%04X = $%02X\n",A,V);\r |
86 | V >>= 1;\r |
87 | prg[0] = V*4;\r |
88 | prg[1] = V*4+1;\r |
89 | prg[2] = V*4+2;\r |
90 | prg[3] = V*4+3;\r |
91 | Sync();\r |
92 | }\r |
93 | \r |
94 | static DECLFW(M176Write_5FF2)\r |
95 | { \r |
96 | printf("%04X = $%02X\n",A,V);\r |
97 | chr = V;\r |
98 | Sync();\r |
99 | }\r |
100 | \r |
101 | static DECLFW(M176Write_A001)\r |
102 | {\r |
103 | we_sram = V & 0x03;\r |
104 | }\r |
105 | \r |
106 | static DECLFW(M176Write_WriteSRAM)\r |
107 | {\r |
108 | // if(we_sram)\r |
109 | CartBW(A,V);\r |
110 | }\r |
111 | \r |
112 | static void M176Power(void)\r |
113 | {\r |
114 | SetReadHandler(0x6000,0x7fff,CartBR);\r |
115 | SetWriteHandler(0x6000,0x7fff,M176Write_WriteSRAM);\r |
116 | SetReadHandler(0x8000,0xFFFF,CartBR);\r |
117 | SetWriteHandler(0xA001,0xA001,M176Write_A001);\r |
118 | SetWriteHandler(0x5001,0x5001,M176Write_5001);\r |
119 | SetWriteHandler(0x5010,0x5010,M176Write_5010);\r |
120 | SetWriteHandler(0x5011,0x5011,M176Write_5011);\r |
121 | SetWriteHandler(0x5ff1,0x5ff1,M176Write_5FF1);\r |
122 | SetWriteHandler(0x5ff2,0x5ff2,M176Write_5FF2);\r |
123 | \r |
124 | we_sram = 0;\r |
125 | sbw = 0;\r |
126 | prg[0] = 0;\r |
127 | prg[1] = 1;\r |
128 | prg[2] = (ROM_size-2)&63;\r |
129 | prg[3] = (ROM_size-1)&63;\r |
130 | Sync();\r |
131 | }\r |
132 | \r |
133 | \r |
134 | static void M176Close(void)\r |
135 | {\r |
136 | if(WRAM)\r |
137 | FCEU_gfree(WRAM);\r |
138 | WRAM=NULL;\r |
139 | }\r |
140 | \r |
141 | static void StateRestore(int version)\r |
142 | {\r |
143 | Sync();\r |
144 | }\r |
145 | \r |
146 | void Mapper176_Init(CartInfo *info)\r |
147 | {\r |
148 | info->Power=M176Power;\r |
149 | info->Close=M176Close;\r |
150 | \r |
151 | GameStateRestore=StateRestore;\r |
152 | \r |
153 | WRAMSIZE=8192;\r |
154 | WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);\r |
155 | SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);\r |
156 | AddExState(WRAM, WRAMSIZE, 0, "WRAM");\r |
157 | AddExState(&StateRegs, ~0, 0, 0);\r |
158 | }\r |