| 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 | } |