386f5371 |
1 | /* FCE Ultra - NES/Famicom Emulator\r |
2 | *\r |
3 | * Copyright notice for this file:\r |
4 | * Copyright (C) 2005-2011 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 | * Super Game (Sugar Softec) protected mapper\r |
21 | * Pocahontas 2 (Unl) [U][!], etc.\r |
22 | * TODO: 9in1 LION KING HANGS!\r |
23 | */\r |
24 | \r |
25 | #include "mapinc.h"\r |
26 | #include "mmc3.h"\r |
27 | \r |
28 | static uint8 cmdin;\r |
29 | \r |
30 | static uint8 regperm[8][8] = \r |
31 | {\r |
32 | {0, 1, 2, 3, 4, 5, 6, 7},\r |
33 | {0, 2, 6, 1, 7, 3, 4, 5},\r |
34 | {0, 5, 4, 1, 7, 2, 6, 3}, // unused\r |
35 | {0, 6, 3, 7, 5, 2, 4, 1},\r |
36 | {0, 2, 5, 3, 6, 1, 7, 4},\r |
37 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
38 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
39 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
40 | };\r |
41 | \r |
42 | static uint8 adrperm[8][8] = \r |
43 | {\r |
44 | {0, 1, 2, 3, 4, 5, 6, 7},\r |
45 | {3, 2, 0, 4, 1, 5, 6, 7},\r |
46 | {0, 1, 2, 3, 4, 5, 6, 7}, // unused\r |
47 | {5, 0, 1, 2, 3, 7, 6, 4},\r |
48 | {3, 1, 0, 5, 2, 4, 6, 7},\r |
49 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
50 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
51 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty\r |
52 | };\r |
53 | \r |
54 | static void UNL8237CW(uint32 A, uint8 V)\r |
55 | {\r |
56 | if(EXPREGS[0]&0x40)\r |
57 | setchr1(A,((EXPREGS[1]&0xc)<<6)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));\r |
58 | else\r |
59 | setchr1(A,((EXPREGS[1]&0xc)<<6)|V);\r |
60 | }\r |
61 | \r |
62 | static void UNL8237PW(uint32 A, uint8 V)\r |
63 | {\r |
64 | if(EXPREGS[0]&0x40)\r |
65 | {\r |
66 | uint8 sbank = (EXPREGS[1]&0x10);\r |
67 | if(EXPREGS[0]&0x80)\r |
68 | {\r |
69 | uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0x7)|(sbank>>1);\r |
70 | if(EXPREGS[0]&0x20)\r |
71 | setprg32(0x8000,bank>>1);\r |
72 | else\r |
73 | {\r |
74 | setprg16(0x8000,bank);\r |
75 | setprg16(0xC000,bank);\r |
76 | }\r |
77 | }\r |
78 | else\r |
79 | setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x0F)|sbank);\r |
80 | }\r |
81 | else\r |
82 | {\r |
83 | if(EXPREGS[0]&0x80)\r |
84 | {\r |
85 | uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0xF);\r |
86 | if(EXPREGS[0]&0x20)\r |
87 | setprg32(0x8000,bank>>1);\r |
88 | else\r |
89 | {\r |
90 | setprg16(0x8000,bank);\r |
91 | setprg16(0xC000,bank);\r |
92 | }\r |
93 | }\r |
94 | else\r |
95 | setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x1F));\r |
96 | }\r |
97 | }\r |
98 | \r |
99 | static void UNL8237ACW(uint32 A, uint8 V)\r |
100 | {\r |
101 | if(EXPREGS[0]&0x40)\r |
102 | setchr1(A,((EXPREGS[1]&0xE)<<7)|(V&0x7F)|((EXPREGS[1]&0x20)<<2));\r |
103 | else\r |
104 | setchr1(A,((EXPREGS[1]&0xE)<<7)|V);\r |
105 | }\r |
106 | \r |
107 | static void UNL8237APW(uint32 A, uint8 V)\r |
108 | {\r |
109 | if(EXPREGS[0]&0x40)\r |
110 | {\r |
111 | uint8 sbank = (EXPREGS[1]&0x10);\r |
112 | if(EXPREGS[0]&0x80)\r |
113 | {\r |
114 | uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0x7)|(sbank>>1);\r |
115 | if(EXPREGS[0]&0x20)\r |
116 | setprg32(0x8000,bank>>1);\r |
117 | else\r |
118 | {\r |
119 | setprg16(0x8000,bank);\r |
120 | setprg16(0xC000,bank);\r |
121 | }\r |
122 | }\r |
123 | else\r |
124 | setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank);\r |
125 | }\r |
126 | else\r |
127 | {\r |
128 | if(EXPREGS[0]&0x80)\r |
129 | {\r |
130 | uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0xF);\r |
131 | if(EXPREGS[0]&0x20)\r |
132 | setprg32(0x8000,bank>>1);\r |
133 | else\r |
134 | {\r |
135 | setprg16(0x8000,bank);\r |
136 | setprg16(0xC000,bank);\r |
137 | }\r |
138 | }\r |
139 | else\r |
140 | setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F));\r |
141 | }\r |
142 | }\r |
143 | static DECLFW(UNL8237Write)\r |
144 | {\r |
145 | uint8 dat = V;\r |
146 | uint8 adr = adrperm[EXPREGS[2]][((A>>12)&6)|(A&1)];\r |
147 | uint16 addr = (adr & 1)|((adr & 6)<<12)|0x8000;\r |
148 | if(adr < 4)\r |
149 | {\r |
150 | if(!adr)\r |
151 | dat = (dat & 0xC0)|(regperm[EXPREGS[2]][dat & 7]);\r |
152 | MMC3_CMDWrite(addr,dat);\r |
153 | }\r |
154 | else \r |
155 | MMC3_IRQWrite(addr,dat);\r |
156 | }\r |
157 | \r |
158 | static DECLFW(UNL8237ExWrite)\r |
159 | {\r |
160 | switch(A)\r |
161 | {\r |
162 | case 0x5000: EXPREGS[0]=V; FixMMC3PRG(MMC3_cmd); break;\r |
163 | case 0x5001: EXPREGS[1]=V; FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); break;\r |
164 | case 0x5007: EXPREGS[2]=V; break;\r |
165 | }\r |
166 | }\r |
167 | \r |
168 | static void UNL8237Power(void)\r |
169 | {\r |
170 | EXPREGS[0]=EXPREGS[2]=0;\r |
171 | EXPREGS[1]=3;\r |
172 | GenMMC3Power();\r |
173 | SetWriteHandler(0x8000,0xFFFF,UNL8237Write);\r |
174 | SetWriteHandler(0x5000,0x7FFF,UNL8237ExWrite);\r |
175 | }\r |
176 | \r |
177 | void UNL8237_Init(CartInfo *info)\r |
178 | {\r |
179 | GenMMC3_Init(info, 256, 256, 0, 0);\r |
180 | cwrap=UNL8237CW;\r |
181 | pwrap=UNL8237PW;\r |
182 | info->Power=UNL8237Power;\r |
183 | AddExState(EXPREGS, 3, 0, "EXPR");\r |
184 | AddExState(&cmdin, 1, 0, "CMDIN");\r |
185 | }\r |
186 | \r |
187 | void UNL8237A_Init(CartInfo *info)\r |
188 | {\r |
189 | GenMMC3_Init(info, 256, 256, 0, 0);\r |
190 | cwrap=UNL8237ACW;\r |
191 | pwrap=UNL8237APW;\r |
192 | info->Power=UNL8237Power;\r |
193 | AddExState(EXPREGS, 3, 0, "EXPR");\r |
194 | AddExState(&cmdin, 1, 0, "CMDIN");\r |
195 | }\r |