43725da7 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2011 CaH4e3 |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify |
7 | * it under the terms of the GNU General Public License as published by |
8 | * the Free Software Foundation; either version 2 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * This program is distributed in the hope that it will be useful, |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | * GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License |
17 | * along with this program; if not, write to the Free Software |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | * |
20 | * Super Game (Sugar Softec) protected mapper |
21 | * Pocahontas 2 (Unl) [U][!], etc. |
22 | * TODO: 9in1 LION KING HANGS! |
23 | */ |
24 | |
25 | #include "mapinc.h" |
26 | #include "mmc3.h" |
27 | |
28 | static uint8 cmdin; |
29 | |
30 | static uint8 regperm[8][8] = |
31 | { |
32 | {0, 1, 2, 3, 4, 5, 6, 7}, |
33 | {0, 2, 6, 1, 7, 3, 4, 5}, |
34 | {0, 5, 4, 1, 7, 2, 6, 3}, // unused |
35 | {0, 6, 3, 7, 5, 2, 4, 1}, |
36 | {0, 2, 5, 3, 6, 1, 7, 4}, |
37 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
38 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
39 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
40 | }; |
41 | |
42 | static uint8 adrperm[8][8] = |
43 | { |
44 | {0, 1, 2, 3, 4, 5, 6, 7}, |
45 | {3, 2, 0, 4, 1, 5, 6, 7}, |
46 | {0, 1, 2, 3, 4, 5, 6, 7}, // unused |
47 | {5, 0, 1, 2, 3, 7, 6, 4}, |
48 | {3, 1, 0, 5, 2, 4, 6, 7}, |
49 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
50 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
51 | {0, 1, 2, 3, 4, 5, 6, 7}, // empty |
52 | }; |
53 | |
54 | static void UNL8237CW(uint32 A, uint8 V) |
55 | { |
56 | if(EXPREGS[0]&0x40) |
57 | setchr1(A,((EXPREGS[1]&0xc)<<6)|(V&0x7F)|((EXPREGS[1]&0x20)<<2)); |
58 | else |
59 | setchr1(A,((EXPREGS[1]&0xc)<<6)|V); |
60 | } |
61 | |
62 | static void UNL8237PW(uint32 A, uint8 V) |
63 | { |
64 | if(EXPREGS[0]&0x40) |
65 | { |
66 | uint8 sbank = (EXPREGS[1]&0x10); |
67 | if(EXPREGS[0]&0x80) |
68 | { |
69 | uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0x7)|(sbank>>1); |
70 | if(EXPREGS[0]&0x20) |
71 | setprg32(0x8000,bank>>1); |
72 | else |
73 | { |
74 | setprg16(0x8000,bank); |
75 | setprg16(0xC000,bank); |
76 | } |
77 | } |
78 | else |
79 | setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x0F)|sbank); |
80 | } |
81 | else |
82 | { |
83 | if(EXPREGS[0]&0x80) |
84 | { |
85 | uint8 bank = ((EXPREGS[1]&3)<<4)|(EXPREGS[0]&0xF); |
86 | if(EXPREGS[0]&0x20) |
87 | setprg32(0x8000,bank>>1); |
88 | else |
89 | { |
90 | setprg16(0x8000,bank); |
91 | setprg16(0xC000,bank); |
92 | } |
93 | } |
94 | else |
95 | setprg8(A,((EXPREGS[1]&3)<<5)|(V&0x1F)); |
96 | } |
97 | } |
98 | |
99 | static void UNL8237ACW(uint32 A, uint8 V) |
100 | { |
101 | if(EXPREGS[0]&0x40) |
102 | setchr1(A,((EXPREGS[1]&0xE)<<7)|(V&0x7F)|((EXPREGS[1]&0x20)<<2)); |
103 | else |
104 | setchr1(A,((EXPREGS[1]&0xE)<<7)|V); |
105 | } |
106 | |
107 | static void UNL8237APW(uint32 A, uint8 V) |
108 | { |
109 | if(EXPREGS[0]&0x40) |
110 | { |
111 | uint8 sbank = (EXPREGS[1]&0x10); |
112 | if(EXPREGS[0]&0x80) |
113 | { |
114 | uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0x7)|(sbank>>1); |
115 | if(EXPREGS[0]&0x20) { |
116 | // FCEU_printf("8000:%02X\n",bank>>1); |
117 | setprg32(0x8000,bank>>1); |
118 | } |
119 | else |
120 | { |
121 | // FCEU_printf("8000-C000:%02X\n",bank); |
122 | setprg16(0x8000,bank); |
123 | setprg16(0xC000,bank); |
124 | } |
125 | } |
126 | else { |
127 | // FCEU_printf("%04x:%02X\n",A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank); |
128 | setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x0F)|sbank); |
129 | } |
130 | } |
131 | else |
132 | { |
133 | if(EXPREGS[0]&0x80) |
134 | { |
135 | uint8 bank = ((EXPREGS[1]&3)<<4)|((EXPREGS[1]&8)<<3)|(EXPREGS[0]&0xF); |
136 | if(EXPREGS[0]&0x20) { |
137 | // FCEU_printf("8000:%02X\n",(bank>>1)&0x07); |
138 | setprg32(0x8000,bank>>1); |
139 | } |
140 | else |
141 | { |
142 | // FCEU_printf("8000-C000:%02X\n",bank&0x0F); |
143 | setprg16(0x8000,bank); |
144 | setprg16(0xC000,bank); |
145 | } |
146 | } |
147 | else { |
148 | // FCEU_printf("%04X:%02X\n",A,(((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F))&0x1F); |
149 | setprg8(A,((EXPREGS[1]&3)<<5)|((EXPREGS[1]&8)<<4)|(V&0x1F)); |
150 | } |
151 | } |
152 | } |
153 | static DECLFW(UNL8237Write) |
154 | { |
155 | uint8 dat = V; |
156 | uint8 adr = adrperm[EXPREGS[2]][((A>>12)&6)|(A&1)]; |
157 | uint16 addr = (adr & 1)|((adr & 6)<<12)|0x8000; |
158 | if(adr < 4) |
159 | { |
160 | if(!adr) |
161 | dat = (dat & 0xC0)|(regperm[EXPREGS[2]][dat & 7]); |
162 | MMC3_CMDWrite(addr,dat); |
163 | } |
164 | else |
165 | MMC3_IRQWrite(addr,dat); |
166 | } |
167 | |
168 | static DECLFW(UNL8237ExWrite) |
169 | { |
170 | switch(A) |
171 | { |
172 | case 0x5000: EXPREGS[0]=V; FixMMC3PRG(MMC3_cmd); break; |
173 | case 0x5001: EXPREGS[1]=V; FixMMC3PRG(MMC3_cmd); FixMMC3CHR(MMC3_cmd); break; |
174 | case 0x5007: EXPREGS[2]=V; break; |
175 | } |
176 | } |
177 | |
178 | static void UNL8237Power(void) |
179 | { |
180 | EXPREGS[0]=EXPREGS[2]=0; |
181 | EXPREGS[1]=3; |
182 | GenMMC3Power(); |
183 | SetWriteHandler(0x8000,0xFFFF,UNL8237Write); |
184 | SetWriteHandler(0x5000,0x7FFF,UNL8237ExWrite); |
185 | } |
186 | |
187 | void UNL8237_Init(CartInfo *info) |
188 | { |
189 | GenMMC3_Init(info, 256, 256, 0, 0); |
190 | cwrap=UNL8237CW; |
191 | pwrap=UNL8237PW; |
192 | info->Power=UNL8237Power; |
193 | AddExState(EXPREGS, 3, 0, "EXPR"); |
194 | AddExState(&cmdin, 1, 0, "CMDI"); |
195 | } |
196 | |
197 | void UNL8237A_Init(CartInfo *info) |
198 | { |
199 | GenMMC3_Init(info, 256, 256, 0, 0); |
200 | cwrap=UNL8237ACW; |
201 | pwrap=UNL8237APW; |
202 | info->Power=UNL8237Power; |
203 | AddExState(EXPREGS, 3, 0, "EXPR"); |
204 | AddExState(&cmdin, 1, 0, "CMDI"); |
205 | } |