| 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 cmd; |
| 24 | static uint8 latch[8]; |
| 25 | |
| 26 | static void MSync(uint8 mirr) |
| 27 | { |
| 28 | switch(mirr&3) |
| 29 | { |
| 30 | case 0:setmirror(MI_V);break; |
| 31 | case 1:setmirror(MI_H);break; |
| 32 | case 2:setmirrorw(0,1,1,1);break; |
| 33 | case 3:setmirror(MI_0);break; |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | static void S74LS374NSynco(void) |
| 38 | { |
| 39 | setprg32(0x8000,latch[0]); |
| 40 | setchr8(latch[1]|latch[3]|latch[4]); |
| 41 | MSync(latch[2]); |
| 42 | } |
| 43 | |
| 44 | static DECLFW(S74LS374NWrite) |
| 45 | { |
| 46 | A&=0x4101; |
| 47 | if(A==0x4100) |
| 48 | cmd=V&7; |
| 49 | else |
| 50 | { |
| 51 | switch(cmd) |
| 52 | { |
| 53 | case 2:latch[3]=(V&1)<<3;break; |
| 54 | case 4:latch[4]=(V&1)<<2;break; |
| 55 | case 5:latch[0]=V&0x7;break; |
| 56 | case 6:latch[1]=V&3;break; |
| 57 | case 7:latch[2]=V>>1;break; |
| 58 | } |
| 59 | S74LS374NSynco(); |
| 60 | } |
| 61 | } |
| 62 | |
| 63 | static void S74LS374NPower(void) |
| 64 | { |
| 65 | latch[0]=latch[1]=latch[2]=latch[3]=latch[4]=0; |
| 66 | S74LS374NSynco(); |
| 67 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 68 | SetWriteHandler(0x4100,0x7FFF,S74LS374NWrite); |
| 69 | } |
| 70 | |
| 71 | static void S74LS374NRestore(int version) |
| 72 | { |
| 73 | S74LS374NSynco(); |
| 74 | } |
| 75 | |
| 76 | void S74LS374N_Init(CartInfo *info) |
| 77 | { |
| 78 | info->Power=S74LS374NPower; |
| 79 | GameStateRestore=S74LS374NRestore; |
| 80 | AddExState(latch, 5, 0, "LATC"); |
| 81 | AddExState(&cmd, 1, 0, "CMD"); |
| 82 | } |
| 83 | |
| 84 | static void S74LS374NASynco(void) |
| 85 | { |
| 86 | setprg32(0x8000,latch[0]); |
| 87 | setchr8(latch[1]); |
| 88 | MSync(latch[2]); |
| 89 | } |
| 90 | |
| 91 | static DECLFW(S74LS374NAWrite) |
| 92 | { |
| 93 | A&=0x4101; |
| 94 | if(A==0x4100) |
| 95 | cmd=V&7; |
| 96 | else |
| 97 | { |
| 98 | switch(cmd) |
| 99 | { |
| 100 | case 0:latch[0]=0;latch[1]=3;break; |
| 101 | case 2:latch[3]=(V&1)<<3;break; |
| 102 | case 4:latch[1]=(latch[1]&6)|(V&3);break; |
| 103 | case 5:latch[0]=V&1;break; |
| 104 | case 6:latch[1]=(latch[1]&1)|latch[3]|((V&3)<<1);break; |
| 105 | case 7:latch[2]=V&1;break; |
| 106 | } |
| 107 | S74LS374NSynco(); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | static void S74LS374NAPower(void) |
| 112 | { |
| 113 | latch[0]=latch[2]=latch[3]=latch[4]=0; |
| 114 | latch[1]=3; |
| 115 | S74LS374NASynco(); |
| 116 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 117 | SetWriteHandler(0x4100,0x7FFF,S74LS374NAWrite); |
| 118 | } |
| 119 | |
| 120 | void S74LS374NA_Init(CartInfo *info) |
| 121 | { |
| 122 | info->Power=S74LS374NAPower; |
| 123 | GameStateRestore=S74LS374NRestore; |
| 124 | AddExState(latch, 5, 0, "LATC"); |
| 125 | AddExState(&cmd, 1, 0, "CMD"); |
| 126 | } |
| 127 | |
| 128 | static int type; |
| 129 | //static int PPUbus; |
| 130 | static void S8259Synco(void) |
| 131 | { |
| 132 | int x; |
| 133 | setprg32(0x8000,latch[5]&7); |
| 134 | |
| 135 | if(!UNIFchrrama) // No CHR RAM? Then BS'ing is ok. |
| 136 | { |
| 137 | for(x=0;x<4;x++) |
| 138 | { |
| 139 | int bank; |
| 140 | if(latch[7]&1) |
| 141 | bank=(latch[0]&0x7)|((latch[4]&7)<<3); |
| 142 | else |
| 143 | bank=(latch[x]&0x7)|((latch[4]&7)<<3); |
| 144 | switch (type) |
| 145 | { |
| 146 | case 00: bank=(bank<<1)|(x&1); setchr2(0x800*x,bank); break; |
| 147 | case 01: setchr2(0x800*x,bank); break; |
| 148 | case 02: bank=(bank<<2)|(x&3); setchr2(0x800*x,bank); break; |
| 149 | case 03: bank=latch[x]&7; |
| 150 | switch (x&3) |
| 151 | { |
| 152 | case 01: bank|=(latch[4]&1)<<4;break; |
| 153 | case 02: bank|=(latch[4]&2)<<3;break; |
| 154 | case 03: bank|=((latch[4]&4)<<2)|((latch[6]&1)<<3);break; |
| 155 | } |
| 156 | setchr1(0x400*x,bank); |
| 157 | setchr4(0x1000,~0); |
| 158 | break; |
| 159 | } |
| 160 | } |
| 161 | } |
| 162 | MSync(latch[7]>>1); |
| 163 | } |
| 164 | |
| 165 | static DECLFW(S8259Write) |
| 166 | { |
| 167 | A&=0x4101; |
| 168 | if(A==0x4100) |
| 169 | cmd=V; |
| 170 | else |
| 171 | { |
| 172 | latch[cmd&7]=V; |
| 173 | S8259Synco(); |
| 174 | } |
| 175 | } |
| 176 | |
| 177 | static void S8259Reset(void) |
| 178 | { |
| 179 | int x; |
| 180 | cmd=0; |
| 181 | |
| 182 | for(x=0;x<8;x++) latch[x]=0; |
| 183 | setchr8(0); |
| 184 | |
| 185 | S8259Synco(); |
| 186 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 187 | SetWriteHandler(0x4100,0x7FFF,S8259Write); |
| 188 | } |
| 189 | |
| 190 | static void S8259Restore(int version) |
| 191 | { |
| 192 | S8259Synco(); |
| 193 | } |
| 194 | |
| 195 | void S8259A_Init(CartInfo *info) // Kevin's Horton 141 mapper |
| 196 | { |
| 197 | info->Power=S8259Reset; |
| 198 | GameStateRestore=S8259Restore; |
| 199 | AddExState(latch, 8, 0, "LATC"); |
| 200 | AddExState(&cmd, 1, 0, "CMD"); |
| 201 | type=0; |
| 202 | } |
| 203 | |
| 204 | void S8259B_Init(CartInfo *info) // Kevin's Horton 138 mapper |
| 205 | { |
| 206 | info->Power=S8259Reset; |
| 207 | GameStateRestore=S8259Restore; |
| 208 | AddExState(latch, 8, 0, "LATC"); |
| 209 | AddExState(&cmd, 1, 0, "CMD"); |
| 210 | type=1; |
| 211 | } |
| 212 | |
| 213 | void S8259C_Init(CartInfo *info) // Kevin's Horton 139 mapper |
| 214 | { |
| 215 | info->Power=S8259Reset; |
| 216 | GameStateRestore=S8259Restore; |
| 217 | AddExState(latch, 8, 0, "LATC"); |
| 218 | AddExState(&cmd, 1, 0, "CMD"); |
| 219 | type=2; |
| 220 | } |
| 221 | |
| 222 | void S8259D_Init(CartInfo *info) // Kevin's Horton 137 mapper |
| 223 | { |
| 224 | info->Power=S8259Reset; |
| 225 | GameStateRestore=S8259Restore; |
| 226 | AddExState(latch, 8, 0, "LATC"); |
| 227 | AddExState(&cmd, 1, 0, "CMD"); |
| 228 | type=3; |
| 229 | } |
| 230 | |
| 231 | static void(*WSync)(void); |
| 232 | |
| 233 | static void SA0161MSynco() |
| 234 | { |
| 235 | setprg32(0x8000,(latch[0]>>3)&1); |
| 236 | setchr8(latch[0]&7); |
| 237 | } |
| 238 | |
| 239 | static DECLFW(SAWrite) |
| 240 | { |
| 241 | if(A&0x100) |
| 242 | { |
| 243 | latch[0]=V; |
| 244 | WSync(); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | static void SAReset(void) |
| 249 | { |
| 250 | latch[0]=0; |
| 251 | WSync(); |
| 252 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 253 | SetWriteHandler(0x4100,0x5FFF,SAWrite); |
| 254 | } |
| 255 | |
| 256 | static void SA0161MRestore(int version) |
| 257 | { |
| 258 | SA0161MSynco(); |
| 259 | } |
| 260 | |
| 261 | void SA0161M_Init(CartInfo *info) |
| 262 | { |
| 263 | WSync=SA0161MSynco; |
| 264 | GameStateRestore=SA0161MRestore; |
| 265 | info->Power=SAReset; |
| 266 | AddExState(&latch[0], 1, 0, "LATC"); |
| 267 | } |
| 268 | |
| 269 | static void SA72007Synco() |
| 270 | { |
| 271 | setprg32(0x8000,0); |
| 272 | setchr8(latch[0]>>7); |
| 273 | } |
| 274 | |
| 275 | static void SA72007Restore(int version) |
| 276 | { |
| 277 | SA72007Synco(); |
| 278 | } |
| 279 | |
| 280 | void SA72007_Init(CartInfo *info) |
| 281 | { |
| 282 | WSync=SA72007Synco; |
| 283 | GameStateRestore=SA72007Restore; |
| 284 | info->Power=SAReset; |
| 285 | AddExState(&latch[0], 1, 0, "LATC"); |
| 286 | } |
| 287 | |
| 288 | static void SA72008Synco() |
| 289 | { |
| 290 | setprg32(0x8000,(latch[0]>>2)&1); |
| 291 | setchr8(latch[0]&3); |
| 292 | } |
| 293 | |
| 294 | static void SA72008Restore(int version) |
| 295 | { |
| 296 | SA72008Synco(); |
| 297 | } |
| 298 | |
| 299 | void SA72008_Init(CartInfo *info) |
| 300 | { |
| 301 | WSync=SA72008Synco; |
| 302 | GameStateRestore=SA72008Restore; |
| 303 | info->Power=SAReset; |
| 304 | AddExState(&latch[0], 1, 0, "LATC"); |
| 305 | } |
| 306 | |
| 307 | static DECLFW(SADWrite) |
| 308 | { |
| 309 | latch[0]=V; |
| 310 | WSync(); |
| 311 | } |
| 312 | |
| 313 | static void SADReset(void) |
| 314 | { |
| 315 | latch[0]=0; |
| 316 | WSync(); |
| 317 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 318 | SetWriteHandler(0x8000,0xFFFF,SADWrite); |
| 319 | } |
| 320 | |
| 321 | static void SA0037Synco() |
| 322 | { |
| 323 | setprg32(0x8000,(latch[0]>>3)&1); |
| 324 | setchr8(latch[0]&7); |
| 325 | } |
| 326 | |
| 327 | static void SA0037Restore(int version) |
| 328 | { |
| 329 | SA0037Synco(); |
| 330 | } |
| 331 | |
| 332 | void SA0036_Init(CartInfo *info) |
| 333 | { |
| 334 | WSync=SA72007Synco; |
| 335 | GameStateRestore=SA72007Restore; |
| 336 | info->Power=SADReset; |
| 337 | AddExState(&latch[0], 1, 0, "LATC"); |
| 338 | } |
| 339 | |
| 340 | void SA0037_Init(CartInfo *info) |
| 341 | { |
| 342 | WSync=SA0037Synco; |
| 343 | GameStateRestore=SA0037Restore; |
| 344 | info->Power=SADReset; |
| 345 | AddExState(&latch[0], 1, 0, "LATC"); |
| 346 | } |
| 347 | |
| 348 | static void TCU01Synco() |
| 349 | { |
| 350 | setprg32(0x8000,(latch[0]>>2)&1); |
| 351 | setchr8((latch[0]>>3)&0xF); |
| 352 | } |
| 353 | |
| 354 | static DECLFW(TCWrite) |
| 355 | { |
| 356 | if((A&0x103)==0x102) |
| 357 | latch[0]=V; |
| 358 | TCU01Synco(); |
| 359 | } |
| 360 | |
| 361 | static void TCU01Reset(void) |
| 362 | { |
| 363 | latch[0]=0; |
| 364 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 365 | SetWriteHandler(0x4100,0xFFFF,TCWrite); |
| 366 | TCU01Synco(); |
| 367 | } |
| 368 | |
| 369 | static void TCU01Restore(int version) |
| 370 | { |
| 371 | TCU01Synco(); |
| 372 | } |
| 373 | |
| 374 | void TCU01_Init(CartInfo *info) |
| 375 | { |
| 376 | GameStateRestore=TCU01Restore; |
| 377 | info->Power=TCU01Reset; |
| 378 | AddExState(&latch[0], 1, 0, "LATC"); |
| 379 | } |
| 380 | |
| 381 | static DECLFR(TCA01Read) |
| 382 | { |
| 383 | uint8 ret; |
| 384 | if((A&0x4100)==0x4100) |
| 385 | ret=(X.DB&0xC0)|((~A)&0x3F); |
| 386 | else |
| 387 | ret=X.DB; |
| 388 | return ret; |
| 389 | } |
| 390 | |
| 391 | static void TCA01Reset(void) |
| 392 | { |
| 393 | setprg16(0x8000,0); |
| 394 | setprg16(0xC000,1); |
| 395 | setchr8(0); |
| 396 | SetReadHandler(0x8000,0xFFFF,CartBR); |
| 397 | SetReadHandler(0x4100,0x5FFF,TCA01Read); |
| 398 | } |
| 399 | |
| 400 | void TCA01_Init(CartInfo *info) |
| 401 | { |
| 402 | info->Power=TCA01Reset; |
| 403 | } |