| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2002 Xodnizel |
| 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 | |
| 21 | #include "mapinc.h" |
| 22 | |
| 23 | static uint8 latche, latcheinit; |
| 24 | static uint16 addrreg0, addrreg1; |
| 25 | static void(*WSync)(void); |
| 26 | |
| 27 | static DECLFW(LatchWrite) |
| 28 | { |
| 29 | latche=V; |
| 30 | WSync(); |
| 31 | } |
| 32 | |
| 33 | static void LatchPower(void) |
| 34 | { |
| 35 | latche=latcheinit; |
| 36 | WSync(); |
| 37 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 38 | SetWriteHandler(addrreg0,addrreg1,LatchWrite); |
| 39 | } |
| 40 | |
| 41 | static void StateRestore(int version) |
| 42 | { |
| 43 | WSync(); |
| 44 | } |
| 45 | |
| 46 | void Latch_Init(CartInfo *info, void (*proc)(void), uint8 init, uint16 adr0, uint16 adr1) |
| 47 | { |
| 48 | latcheinit=init; |
| 49 | addrreg0=adr0; |
| 50 | addrreg1=adr1; |
| 51 | WSync=proc; |
| 52 | info->Power=LatchPower; |
| 53 | GameStateRestore=StateRestore; |
| 54 | AddExState(&latche, 1, 0, "LATC"); |
| 55 | } |
| 56 | |
| 57 | //------------------ CPROM --------------------------- |
| 58 | |
| 59 | static void CPROMSync(void) |
| 60 | { |
| 61 | setchr4(0x0000,0); |
| 62 | setchr4(0x1000,latche&3); |
| 63 | setprg16(0x8000,0); |
| 64 | setprg16(0xC000,1); |
| 65 | } |
| 66 | |
| 67 | void CPROM_Init(CartInfo *info) |
| 68 | { |
| 69 | Latch_Init(info, CPROMSync, 0, 0x8000, 0xFFFF); |
| 70 | } |
| 71 | |
| 72 | //------------------ CNROM --------------------------- |
| 73 | |
| 74 | static void CNROMSync(void) |
| 75 | { |
| 76 | setchr8(latche&3); |
| 77 | setprg16(0x8000,0); |
| 78 | setprg16(0xC000,1); |
| 79 | } |
| 80 | |
| 81 | void CNROM_Init(CartInfo *info) |
| 82 | { |
| 83 | Latch_Init(info, CNROMSync, 0, 0x8000, 0xFFFF); |
| 84 | } |
| 85 | |
| 86 | //------------------ ANROM --------------------------- |
| 87 | |
| 88 | static void ANROMSync() |
| 89 | { |
| 90 | setprg32(0x8000,latche&0xf); |
| 91 | setmirror(MI_0+((latche>>4)&1)); |
| 92 | setchr8(0); |
| 93 | } |
| 94 | |
| 95 | void ANROM_Init(CartInfo *info) |
| 96 | { |
| 97 | Latch_Init(info, ANROMSync, 0, 0x8000, 0xFFFF); |
| 98 | } |
| 99 | |
| 100 | //------------------ Map 70 --------------------------- |
| 101 | |
| 102 | static void M70Sync() |
| 103 | { |
| 104 | setprg16(0x8000,latche>>4); |
| 105 | setprg16(0xc000,~0); |
| 106 | setchr8(latche&0xf); |
| 107 | } |
| 108 | |
| 109 | void Mapper70_Init(CartInfo *info) |
| 110 | { |
| 111 | Latch_Init(info, M70Sync, 0, 0x8000, 0xFFFF); |
| 112 | } |
| 113 | |
| 114 | //------------------ Map 152 --------------------------- |
| 115 | |
| 116 | static void M152Sync() |
| 117 | { |
| 118 | setprg16(0x8000,(latche>>4)&7); |
| 119 | setprg16(0xc000,~0); |
| 120 | setchr8(latche&0xf); |
| 121 | setmirror(MI_0+((latche>>7)&1)); /* Saint Seiya...hmm. */ |
| 122 | } |
| 123 | |
| 124 | void Mapper152_Init(CartInfo *info) |
| 125 | { |
| 126 | Latch_Init(info, M152Sync, 0, 0x8000, 0xFFFF); |
| 127 | } |
| 128 | |
| 129 | //------------------ Map 78 --------------------------- |
| 130 | /* Should be two separate emulation functions for this "mapper". Sigh. URGE TO KILL RISING. */ |
| 131 | static void M78Sync() |
| 132 | { |
| 133 | setprg16(0x8000,(latche&7)); |
| 134 | setprg16(0xc000,~0); |
| 135 | setchr8(latche>>4); |
| 136 | setmirror(MI_0+((latche>>3)&1)); |
| 137 | } |
| 138 | |
| 139 | void Mapper78_Init(CartInfo *info) |
| 140 | { |
| 141 | Latch_Init(info, M78Sync, 0, 0x8000, 0xFFFF); |
| 142 | } |
| 143 | |
| 144 | //------------------ MHROM --------------------------- |
| 145 | |
| 146 | static void MHROMSync(void) |
| 147 | { |
| 148 | setprg32(0x8000,latche>>4); |
| 149 | setchr8(latche&0xf); |
| 150 | } |
| 151 | |
| 152 | void MHROM_Init(CartInfo *info) |
| 153 | { |
| 154 | Latch_Init(info, MHROMSync, 0, 0x8000, 0xFFFF); |
| 155 | } |
| 156 | |
| 157 | void Mapper140_Init(CartInfo *info) |
| 158 | { |
| 159 | Latch_Init(info, MHROMSync, 0, 0x6000, 0x7FFF); |
| 160 | } |
| 161 | |
| 162 | //------------------ Map 87 --------------------------- |
| 163 | |
| 164 | static void M87Sync(void) |
| 165 | { |
| 166 | setprg16(0x8000,0); |
| 167 | setprg16(0xC000,1); |
| 168 | setchr8(latche>>1); |
| 169 | } |
| 170 | |
| 171 | void Mapper87_Init(CartInfo *info) |
| 172 | { |
| 173 | Latch_Init(info, M87Sync, ~0, 0x6000, 0xFFFF); |
| 174 | } |
| 175 | |
| 176 | //------------------ Map 11 --------------------------- |
| 177 | |
| 178 | static void M11Sync(void) |
| 179 | { |
| 180 | setprg32(0x8000,latche&0xf); |
| 181 | setchr8(latche>>4); |
| 182 | } |
| 183 | |
| 184 | void Mapper11_Init(CartInfo *info) |
| 185 | { |
| 186 | Latch_Init(info, M11Sync, 0, 0x8000, 0xFFFF); |
| 187 | } |
| 188 | |
| 189 | void Mapper144_Init(CartInfo *info) |
| 190 | { |
| 191 | Latch_Init(info, M11Sync, 0, 0x8001, 0xFFFF); |
| 192 | } |
| 193 | |
| 194 | //------------------ UNROM --------------------------- |
| 195 | |
| 196 | static void UNROMSync(void) |
| 197 | { |
| 198 | setprg16(0x8000,latche); |
| 199 | setprg16(0xc000,~0); |
| 200 | setchr8(0); |
| 201 | } |
| 202 | |
| 203 | void UNROM_Init(CartInfo *info) |
| 204 | { |
| 205 | Latch_Init(info, UNROMSync, 0, 0x8000, 0xFFFF); |
| 206 | } |
| 207 | |
| 208 | //------------------ Map 93 --------------------------- |
| 209 | |
| 210 | static void SSUNROMSync(void) |
| 211 | { |
| 212 | setprg16(0x8000,latche>>4); |
| 213 | setprg16(0xc000,~0); |
| 214 | setchr8(0); |
| 215 | } |
| 216 | |
| 217 | void SUNSOFT_UNROM_Init(CartInfo *info) |
| 218 | { |
| 219 | Latch_Init(info, SSUNROMSync, 0, 0x8000, 0xFFFF); |
| 220 | } |
| 221 | |
| 222 | //------------------ Map 94 --------------------------- |
| 223 | |
| 224 | static void M94Sync(void) |
| 225 | { |
| 226 | setprg16(0x8000,latche>>2); |
| 227 | setprg16(0xc000,~0); |
| 228 | setchr8(0); |
| 229 | } |
| 230 | |
| 231 | void Mapper94_Init(CartInfo *info) |
| 232 | { |
| 233 | Latch_Init(info, M94Sync, 0, 0x8000, 0xFFFF); |
| 234 | } |
| 235 | |
| 236 | //------------------ Map 107 --------------------------- |
| 237 | |
| 238 | static void M107Sync(void) |
| 239 | { |
| 240 | setprg32(0x8000,(latche>>1)&3); |
| 241 | setchr8(latche&7); |
| 242 | } |
| 243 | |
| 244 | void Mapper107_Init(CartInfo *info) |
| 245 | { |
| 246 | Latch_Init(info, M107Sync, ~0, 0x8000, 0xFFFF); |
| 247 | } |
| 248 | |
| 249 | //------------------ NROM --------------------------- |
| 250 | |
| 251 | #ifdef DEBUG_MAPPER |
| 252 | static DECLFW(WriteHandler) |
| 253 | { |
| 254 | FCEU_printf("$%04x:$%02x\n",A,V); |
| 255 | } |
| 256 | #endif |
| 257 | |
| 258 | static void NROMPower(void) |
| 259 | { |
| 260 | setprg16(0x8000,0); |
| 261 | setprg16(0xC000,~0); |
| 262 | setchr8(0); |
| 263 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 264 | #ifdef DEBUG_MAPPER |
| 265 | SetWriteHandler(0x4020,0xFFFF,WriteHandler); |
| 266 | #endif |
| 267 | } |
| 268 | |
| 269 | void NROM_Init(CartInfo *info) |
| 270 | { |
| 271 | info->Power=NROMPower; |
| 272 | } |