| 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 <string.h> |
| 22 | #include <stdlib.h> |
| 23 | #include <stdio.h> |
| 24 | |
| 25 | #ifdef GP2X |
| 26 | #include <unistd.h> // for sync() |
| 27 | #endif |
| 28 | |
| 29 | #include "types.h" |
| 30 | #include "fce.h" |
| 31 | #include "ppu.h" |
| 32 | #include "ppu098.h" |
| 33 | |
| 34 | #include "cart.h" |
| 35 | #include "memory.h" |
| 36 | #include "x6502.h" |
| 37 | |
| 38 | #include "general.h" |
| 39 | |
| 40 | #include "svga.h" |
| 41 | #include "file.h" |
| 42 | |
| 43 | /* |
| 44 | This file contains all code for coordinating the mapping in of the |
| 45 | address space external to the NES. |
| 46 | It's also (ab)used by the NSF code. |
| 47 | */ |
| 48 | |
| 49 | uint8 *Page[32],*VPage[8]; |
| 50 | uint8 **VPageR=VPage; |
| 51 | uint8 *VPageG[8]; |
| 52 | uint8 *MMC5SPRVPage[8]; |
| 53 | uint8 *MMC5BGVPage[8]; |
| 54 | |
| 55 | static uint8 PRGIsRAM[32]; /* This page is/is not PRG RAM. */ |
| 56 | |
| 57 | /* 16 are (sort of) reserved for UNIF/iNES and 16 to map other stuff. */ |
| 58 | static int CHRram[32]; |
| 59 | static int PRGram[32]; |
| 60 | |
| 61 | uint8 *PRGptr[32]; |
| 62 | uint8 *CHRptr[32]; |
| 63 | |
| 64 | uint32 PRGsize[32]; |
| 65 | uint32 CHRsize[32]; |
| 66 | |
| 67 | uint32 PRGmask2[32]; |
| 68 | uint32 PRGmask4[32]; |
| 69 | uint32 PRGmask8[32]; |
| 70 | uint32 PRGmask16[32]; |
| 71 | uint32 PRGmask32[32]; |
| 72 | |
| 73 | uint32 CHRmask1[32]; |
| 74 | uint32 CHRmask2[32]; |
| 75 | uint32 CHRmask4[32]; |
| 76 | uint32 CHRmask8[32]; |
| 77 | |
| 78 | int geniestage=0; |
| 79 | |
| 80 | int modcon; |
| 81 | |
| 82 | uint8 genieval[3]; |
| 83 | uint8 geniech[3]; |
| 84 | |
| 85 | uint32 genieaddr[3]; |
| 86 | |
| 87 | static INLINE void setpageptr(int s, uint32 A, uint8 *p, int ram) |
| 88 | { |
| 89 | uint32 AB=A>>11; |
| 90 | int x; |
| 91 | |
| 92 | if(p) |
| 93 | for(x=(s>>1)-1;x>=0;x--) |
| 94 | { |
| 95 | PRGIsRAM[AB+x]=ram; |
| 96 | Page[AB+x]=p-A; |
| 97 | } |
| 98 | else |
| 99 | for(x=(s>>1)-1;x>=0;x--) |
| 100 | { |
| 101 | PRGIsRAM[AB+x]=0; |
| 102 | Page[AB+x]=0; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | static uint8 nothing[8192]; |
| 107 | void ResetCartMapping(void) |
| 108 | { |
| 109 | int x; |
| 110 | |
| 111 | for(x=0;x<32;x++) |
| 112 | { |
| 113 | Page[x]=nothing-x*2048; |
| 114 | PRGptr[x]=CHRptr[x]=0; |
| 115 | PRGsize[x]=CHRsize[x]=0; |
| 116 | } |
| 117 | for(x=0;x<8;x++) |
| 118 | { |
| 119 | MMC5SPRVPage[x]=MMC5BGVPage[x]=VPageR[x]=nothing-0x400*x; |
| 120 | } |
| 121 | |
| 122 | } |
| 123 | |
| 124 | void SetupCartPRGMapping(int chip, uint8 *p, uint32 size, int ram) |
| 125 | { |
| 126 | PRGptr[chip]=p; |
| 127 | PRGsize[chip]=size; |
| 128 | |
| 129 | PRGmask2[chip]=(size>>11)-1; |
| 130 | PRGmask4[chip]=(size>>12)-1; |
| 131 | PRGmask8[chip]=(size>>13)-1; |
| 132 | PRGmask16[chip]=(size>>14)-1; |
| 133 | PRGmask32[chip]=(size>>15)-1; |
| 134 | |
| 135 | PRGram[chip]=ram?1:0; |
| 136 | } |
| 137 | |
| 138 | void SetupCartCHRMapping(int chip, uint8 *p, uint32 size, int ram) |
| 139 | { |
| 140 | CHRptr[chip]=p; |
| 141 | CHRsize[chip]=size; |
| 142 | |
| 143 | CHRmask1[chip]=(size>>10)-1; |
| 144 | CHRmask2[chip]=(size>>11)-1; |
| 145 | CHRmask4[chip]=(size>>12)-1; |
| 146 | CHRmask8[chip]=(size>>13)-1; |
| 147 | |
| 148 | CHRram[chip]=ram; |
| 149 | } |
| 150 | |
| 151 | DECLFR(CartBR) |
| 152 | { |
| 153 | return Page[A>>11][A]; |
| 154 | } |
| 155 | |
| 156 | DECLFW(CartBW) |
| 157 | { |
| 158 | //printf("Ok: %04x:%02x, %d\n",A,V,PRGIsRAM[A>>11]); |
| 159 | if(PRGIsRAM[A>>11] && Page[A>>11]) |
| 160 | Page[A>>11][A]=V; |
| 161 | } |
| 162 | |
| 163 | DECLFR(CartBROB) |
| 164 | { |
| 165 | if(!Page[A>>11]) return(X.DB); |
| 166 | return Page[A>>11][A]; |
| 167 | } |
| 168 | |
| 169 | void FASTAPASS(3) setprg2r(int r, unsigned int A, unsigned int V) |
| 170 | { |
| 171 | V&=PRGmask2[r]; |
| 172 | setpageptr(2,A,PRGptr[r]?(&PRGptr[r][V<<11]):0,PRGram[r]); |
| 173 | X6502_Rebase(); |
| 174 | } |
| 175 | |
| 176 | void FASTAPASS(2) setprg2(uint32 A, uint32 V) |
| 177 | { |
| 178 | setprg2r(0,A,V); |
| 179 | } |
| 180 | |
| 181 | void FASTAPASS(3) setprg4r(int r, unsigned int A, unsigned int V) |
| 182 | { |
| 183 | V&=PRGmask4[r]; |
| 184 | setpageptr(4,A,PRGptr[r]?(&PRGptr[r][V<<12]):0,PRGram[r]); |
| 185 | X6502_Rebase(); |
| 186 | } |
| 187 | |
| 188 | void FASTAPASS(2) setprg4(uint32 A, uint32 V) |
| 189 | { |
| 190 | setprg4r(0,A,V); |
| 191 | } |
| 192 | |
| 193 | void FASTAPASS(3) setprg8r(int r, unsigned int A, unsigned int V) |
| 194 | { |
| 195 | if(PRGsize[r]>=8192) |
| 196 | { |
| 197 | V&=PRGmask8[r]; |
| 198 | setpageptr(8,A,PRGptr[r]?(&PRGptr[r][V<<13]):0,PRGram[r]); |
| 199 | } |
| 200 | else |
| 201 | { |
| 202 | uint32 VA=V<<2; |
| 203 | int x; |
| 204 | for(x=0;x<4;x++) |
| 205 | setpageptr(2,A+(x<<11),PRGptr[r]?(&PRGptr[r][((VA+x)&PRGmask2[r])<<11]):0,PRGram[r]); |
| 206 | } |
| 207 | X6502_Rebase(); |
| 208 | } |
| 209 | |
| 210 | void FASTAPASS(2) setprg8(uint32 A, uint32 V) |
| 211 | { |
| 212 | setprg8r(0,A,V); |
| 213 | } |
| 214 | |
| 215 | void FASTAPASS(3) setprg16r(int r, unsigned int A, unsigned int V) |
| 216 | { |
| 217 | if(PRGsize[r]>=16384) |
| 218 | { |
| 219 | V&=PRGmask16[r]; |
| 220 | setpageptr(16,A,PRGptr[r]?(&PRGptr[r][V<<14]):0,PRGram[r]); |
| 221 | } |
| 222 | else |
| 223 | { |
| 224 | uint32 VA=V<<3; |
| 225 | int x; |
| 226 | |
| 227 | for(x=0;x<8;x++) |
| 228 | setpageptr(2,A+(x<<11),PRGptr[r]?(&PRGptr[r][((VA+x)&PRGmask2[r])<<11]):0,PRGram[r]); |
| 229 | } |
| 230 | X6502_Rebase(); |
| 231 | } |
| 232 | |
| 233 | void FASTAPASS(2) setprg16(uint32 A, uint32 V) |
| 234 | { |
| 235 | setprg16r(0,A,V); |
| 236 | } |
| 237 | |
| 238 | void FASTAPASS(3) setprg32r(int r,unsigned int A, unsigned int V) |
| 239 | { |
| 240 | if(PRGsize[r]>=32768) |
| 241 | { |
| 242 | V&=PRGmask32[r]; |
| 243 | setpageptr(32,A,PRGptr[r]?(&PRGptr[r][V<<15]):0,PRGram[r]); |
| 244 | } |
| 245 | else |
| 246 | { |
| 247 | uint32 VA=V<<4; |
| 248 | int x; |
| 249 | |
| 250 | for(x=0;x<16;x++) |
| 251 | setpageptr(2,A+(x<<11),PRGptr[r]?(&PRGptr[r][((VA+x)&PRGmask2[r])<<11]):0,PRGram[r]); |
| 252 | } |
| 253 | X6502_Rebase(); |
| 254 | } |
| 255 | |
| 256 | void FASTAPASS(2) setprg32(uint32 A, uint32 V) |
| 257 | { |
| 258 | setprg32r(0,A,V); |
| 259 | } |
| 260 | |
| 261 | void FASTAPASS(3) setchr1r(int r, unsigned int A, unsigned int V) |
| 262 | { |
| 263 | if(!CHRptr[r]) return; |
| 264 | FCEUPPU_LineUpdate(); |
| 265 | V&=CHRmask1[r]; |
| 266 | if(CHRram[r]) |
| 267 | PPUCHRRAM|=(1<<(A>>10)); |
| 268 | else |
| 269 | PPUCHRRAM&=~(1<<(A>>10)); |
| 270 | VPageR[(A)>>10]=&CHRptr[r][(V)<<10]-(A); |
| 271 | } |
| 272 | |
| 273 | void FASTAPASS(3) setchr2r(int r, unsigned int A, unsigned int V) |
| 274 | { |
| 275 | if(!CHRptr[r]) return; |
| 276 | FCEUPPU_LineUpdate(); |
| 277 | V&=CHRmask2[r]; |
| 278 | VPageR[(A)>>10]=VPageR[((A)>>10)+1]=&CHRptr[r][(V)<<11]-(A); |
| 279 | if(CHRram[r]) |
| 280 | PPUCHRRAM|=(3<<(A>>10)); |
| 281 | else |
| 282 | PPUCHRRAM&=~(3<<(A>>10)); |
| 283 | } |
| 284 | |
| 285 | void FASTAPASS(3) setchr4r(int r, unsigned int A, unsigned int V) |
| 286 | { |
| 287 | if(!CHRptr[r]) return; |
| 288 | FCEUPPU_LineUpdate(); |
| 289 | V&=CHRmask4[r]; |
| 290 | VPageR[(A)>>10]=VPageR[((A)>>10)+1]= |
| 291 | VPageR[((A)>>10)+2]=VPageR[((A)>>10)+3]=&CHRptr[r][(V)<<12]-(A); |
| 292 | if(CHRram[r]) |
| 293 | PPUCHRRAM|=(15<<(A>>10)); |
| 294 | else |
| 295 | PPUCHRRAM&=~(15<<(A>>10)); |
| 296 | } |
| 297 | |
| 298 | void FASTAPASS(2) setchr8r(int r, unsigned int V) |
| 299 | { |
| 300 | int x; |
| 301 | |
| 302 | if(!CHRptr[r]) return; |
| 303 | FCEUPPU_LineUpdate(); |
| 304 | V&=CHRmask8[r]; |
| 305 | for(x=7;x>=0;x--) |
| 306 | VPageR[x]=&CHRptr[r][V<<13]; |
| 307 | if(CHRram[r]) |
| 308 | PPUCHRRAM|=(255); |
| 309 | else |
| 310 | PPUCHRRAM&=~(255); |
| 311 | } |
| 312 | |
| 313 | void FASTAPASS(2) setchr1(unsigned int A, unsigned int V) |
| 314 | { |
| 315 | setchr1r(0,A,V); |
| 316 | } |
| 317 | |
| 318 | void FASTAPASS(2) setchr2(unsigned int A, unsigned int V) |
| 319 | { |
| 320 | setchr2r(0,A,V); |
| 321 | } |
| 322 | |
| 323 | void FASTAPASS(2) setchr4(unsigned int A, unsigned int V) |
| 324 | { |
| 325 | setchr4r(0,A,V); |
| 326 | } |
| 327 | |
| 328 | void FASTAPASS(1) setchr8(unsigned int V) |
| 329 | { |
| 330 | setchr8r(0,V); |
| 331 | } |
| 332 | |
| 333 | void FASTAPASS(1) setvram8(uint8 *p) |
| 334 | { |
| 335 | int x; |
| 336 | for(x=7;x>=0;x--) |
| 337 | VPageR[x]=p; |
| 338 | PPUCHRRAM|=255; |
| 339 | } |
| 340 | |
| 341 | void FASTAPASS(2) setvram4(uint32 A, uint8 *p) |
| 342 | { |
| 343 | int x; |
| 344 | for(x=3;x>=0;x--) |
| 345 | VPageR[(A>>10)+x]=p-A; |
| 346 | PPUCHRRAM|=(15<<(A>>10)); |
| 347 | } |
| 348 | |
| 349 | void FASTAPASS(3) setvramb1(uint8 *p, uint32 A, uint32 b) |
| 350 | { |
| 351 | FCEUPPU_LineUpdate(); |
| 352 | VPageR[A>>10]=p-A+(b<<10); |
| 353 | PPUCHRRAM|=(1<<(A>>10)); |
| 354 | } |
| 355 | |
| 356 | void FASTAPASS(3) setvramb2(uint8 *p, uint32 A, uint32 b) |
| 357 | { |
| 358 | FCEUPPU_LineUpdate(); |
| 359 | VPageR[(A>>10)]=VPageR[(A>>10)+1]=p-A+(b<<11); |
| 360 | PPUCHRRAM|=(3<<(A>>10)); |
| 361 | } |
| 362 | |
| 363 | void FASTAPASS(3) setvramb4(uint8 *p, uint32 A, uint32 b) |
| 364 | { |
| 365 | int x; |
| 366 | |
| 367 | FCEUPPU_LineUpdate(); |
| 368 | for(x=3;x>=0;x--) |
| 369 | VPageR[(A>>10)+x]=p-A+(b<<12); |
| 370 | PPUCHRRAM|=(15<<(A>>10)); |
| 371 | } |
| 372 | |
| 373 | void FASTAPASS(2) setvramb8(uint8 *p, uint32 b) |
| 374 | { |
| 375 | int x; |
| 376 | |
| 377 | FCEUPPU_LineUpdate(); |
| 378 | for(x=7;x>=0;x--) |
| 379 | VPageR[x]=p+(b<<13); |
| 380 | PPUCHRRAM|=255; |
| 381 | } |
| 382 | |
| 383 | /* This function can be called without calling SetupCartMirroring(). */ |
| 384 | |
| 385 | void FASTAPASS(3) setntamem(uint8 *p, int ram, uint32 b) |
| 386 | { |
| 387 | FCEUPPU_LineUpdate(); |
| 388 | vnapage[b]=p; |
| 389 | PPUNTARAM&=~(1<<b); |
| 390 | if(ram) |
| 391 | PPUNTARAM|=1<<b; |
| 392 | } |
| 393 | |
| 394 | static int mirrorhard=0; |
| 395 | void setmirrorw(int a, int b, int c, int d) |
| 396 | { |
| 397 | FCEUPPU_LineUpdate(); |
| 398 | vnapage[0]=NTARAM+a*0x400; |
| 399 | vnapage[1]=NTARAM+b*0x400; |
| 400 | vnapage[2]=NTARAM+c*0x400; |
| 401 | vnapage[3]=NTARAM+d*0x400; |
| 402 | } |
| 403 | |
| 404 | void FASTAPASS(1) setmirror(int t) |
| 405 | { |
| 406 | FCEUPPU_LineUpdate(); |
| 407 | if(!mirrorhard) |
| 408 | { |
| 409 | switch(t) |
| 410 | { |
| 411 | case MI_H: |
| 412 | vnapage[0]=vnapage[1]=NTARAM;vnapage[2]=vnapage[3]=NTARAM+0x400; |
| 413 | break; |
| 414 | case MI_V: |
| 415 | vnapage[0]=vnapage[2]=NTARAM;vnapage[1]=vnapage[3]=NTARAM+0x400; |
| 416 | break; |
| 417 | case MI_0: |
| 418 | vnapage[0]=vnapage[1]=vnapage[2]=vnapage[3]=NTARAM; |
| 419 | break; |
| 420 | case MI_1: |
| 421 | vnapage[0]=vnapage[1]=vnapage[2]=vnapage[3]=NTARAM+0x400; |
| 422 | break; |
| 423 | } |
| 424 | PPUNTARAM=0xF; |
| 425 | } |
| 426 | } |
| 427 | |
| 428 | void SetupCartMirroring(int m, int hard, uint8 *extra) |
| 429 | { |
| 430 | if(m<4) |
| 431 | { |
| 432 | mirrorhard = 0; |
| 433 | setmirror(m); |
| 434 | } |
| 435 | else |
| 436 | { |
| 437 | vnapage[0]=NTARAM; |
| 438 | vnapage[1]=NTARAM+0x400; |
| 439 | vnapage[2]=extra; |
| 440 | vnapage[3]=extra+0x400; |
| 441 | PPUNTARAM=0xF; |
| 442 | } |
| 443 | mirrorhard=hard; |
| 444 | } |
| 445 | |
| 446 | static uint8 *GENIEROM=0; |
| 447 | |
| 448 | void FixGenieMap(void); |
| 449 | |
| 450 | /* Called when a game(file) is opened successfully. */ |
| 451 | void OpenGenie(void) |
| 452 | { |
| 453 | FILE *fp; |
| 454 | int x; |
| 455 | |
| 456 | if(!GENIEROM) |
| 457 | { |
| 458 | char *fn; |
| 459 | |
| 460 | if(!(GENIEROM=(uint8 *)FCEU_malloc(4096+1024))) return; |
| 461 | |
| 462 | fn=FCEU_MakeFName(FCEUMKF_GGROM,0,0); |
| 463 | fp=fopen(fn,"rb"); |
| 464 | free(fn); |
| 465 | if(!fp) |
| 466 | { |
| 467 | FCEU_PrintError("Error opening Game Genie ROM image!"); |
| 468 | free(GENIEROM); |
| 469 | GENIEROM=0; |
| 470 | return; |
| 471 | } |
| 472 | if(fread(GENIEROM,1,16,fp)!=16) |
| 473 | { |
| 474 | grerr: |
| 475 | FCEU_PrintError("Error reading from Game Genie ROM image!"); |
| 476 | free(GENIEROM); |
| 477 | GENIEROM=0; |
| 478 | fclose(fp); |
| 479 | return; |
| 480 | } |
| 481 | if(GENIEROM[0]==0x4E) /* iNES ROM image */ |
| 482 | { |
| 483 | if(fread(GENIEROM,1,4096,fp)!=4096) |
| 484 | goto grerr; |
| 485 | if(fseek(fp,16384-4096,SEEK_CUR)) |
| 486 | goto grerr; |
| 487 | if(fread(GENIEROM+4096,1,256,fp)!=256) |
| 488 | goto grerr; |
| 489 | } |
| 490 | else |
| 491 | { |
| 492 | if(fread(GENIEROM+16,1,4352-16,fp)!=(4352-16)) |
| 493 | goto grerr; |
| 494 | } |
| 495 | fclose(fp); |
| 496 | |
| 497 | /* Workaround for the FCE Ultra CHR page size only being 1KB */ |
| 498 | for(x=0;x<4;x++) |
| 499 | memcpy(GENIEROM+4096+(x<<8),GENIEROM+4096,256); |
| 500 | } |
| 501 | |
| 502 | geniestage=1; |
| 503 | } |
| 504 | |
| 505 | /* Called when a game is closed. */ |
| 506 | void CloseGenie(void) |
| 507 | { |
| 508 | /* No good reason to free() the Game Genie ROM image data. */ |
| 509 | geniestage=0; |
| 510 | FlushGenieRW(); |
| 511 | VPageR=VPage; |
| 512 | } |
| 513 | |
| 514 | void FCEU_KillGenie(void) |
| 515 | { |
| 516 | if(GENIEROM) |
| 517 | { |
| 518 | free(GENIEROM); |
| 519 | GENIEROM=0; |
| 520 | } |
| 521 | } |
| 522 | |
| 523 | static DECLFR(GenieRead) |
| 524 | { |
| 525 | return GENIEROM[A&4095]; |
| 526 | } |
| 527 | |
| 528 | static DECLFW(GenieWrite) |
| 529 | { |
| 530 | switch(A) |
| 531 | { |
| 532 | case 0x800c: |
| 533 | case 0x8008: |
| 534 | case 0x8004:genieval[((A-4)&0xF)>>2]=V;break; |
| 535 | |
| 536 | case 0x800b: |
| 537 | case 0x8007: |
| 538 | case 0x8003:geniech[((A-3)&0xF)>>2]=V;break; |
| 539 | |
| 540 | case 0x800a: |
| 541 | case 0x8006: |
| 542 | case 0x8002:genieaddr[((A-2)&0xF)>>2]&=0xFF00;genieaddr[((A-2)&0xF)>>2]|=V;break; |
| 543 | |
| 544 | case 0x8009: |
| 545 | case 0x8005: |
| 546 | case 0x8001:genieaddr[((A-1)&0xF)>>2]&=0xFF;genieaddr[((A-1)&0xF)>>2]|=(V|0x80)<<8;break; |
| 547 | |
| 548 | case 0x8000:if(!V) |
| 549 | FixGenieMap(); |
| 550 | else |
| 551 | { |
| 552 | modcon=V^0xFF; |
| 553 | if(V==0x71) |
| 554 | modcon=0; |
| 555 | } |
| 556 | break; |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | static readfunc GenieBackup[3]; |
| 561 | |
| 562 | static DECLFR(GenieFix1) |
| 563 | { |
| 564 | uint8 r=GenieBackup[0](A); |
| 565 | |
| 566 | if((modcon>>1)&1) // No check |
| 567 | return genieval[0]; |
| 568 | else if(r==geniech[0]) |
| 569 | return genieval[0]; |
| 570 | |
| 571 | return r; |
| 572 | } |
| 573 | |
| 574 | static DECLFR(GenieFix2) |
| 575 | { |
| 576 | uint8 r=GenieBackup[1](A); |
| 577 | |
| 578 | if((modcon>>2)&1) // No check |
| 579 | return genieval[1]; |
| 580 | else if(r==geniech[1]) |
| 581 | return genieval[1]; |
| 582 | |
| 583 | return r; |
| 584 | } |
| 585 | |
| 586 | static DECLFR(GenieFix3) |
| 587 | { |
| 588 | uint8 r=GenieBackup[2](A); |
| 589 | |
| 590 | if((modcon>>3)&1) // No check |
| 591 | return genieval[2]; |
| 592 | else if(r==geniech[2]) |
| 593 | return genieval[2]; |
| 594 | |
| 595 | return r; |
| 596 | } |
| 597 | |
| 598 | |
| 599 | void FixGenieMap(void) |
| 600 | { |
| 601 | int x; |
| 602 | |
| 603 | geniestage=2; |
| 604 | |
| 605 | for(x=0;x<8;x++) |
| 606 | VPage[x]=VPageG[x]; |
| 607 | |
| 608 | VPageR=VPage; |
| 609 | FlushGenieRW(); |
| 610 | //printf("Rightyo\n"); |
| 611 | for(x=0;x<3;x++) |
| 612 | if((modcon>>(4+x))&1) |
| 613 | { |
| 614 | readfunc tmp[3]={GenieFix1,GenieFix2,GenieFix3}; |
| 615 | GenieBackup[x]=GetReadHandler(genieaddr[x]); |
| 616 | SetReadHandler(genieaddr[x],genieaddr[x],tmp[x]); |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | void GeniePower(void) |
| 621 | { |
| 622 | uint32 x; |
| 623 | |
| 624 | if(!geniestage) |
| 625 | return; |
| 626 | |
| 627 | geniestage=1; |
| 628 | for(x=0;x<3;x++) |
| 629 | { |
| 630 | genieval[x]=0xFF; |
| 631 | geniech[x]=0xFF; |
| 632 | genieaddr[x]=0xFFFF; |
| 633 | } |
| 634 | modcon=0; |
| 635 | |
| 636 | SetWriteHandler(0x8000,0xFFFF,GenieWrite); |
| 637 | SetReadHandler(0x8000,0xFFFF,GenieRead); |
| 638 | |
| 639 | for(x=0;x<8;x++) |
| 640 | VPage[x]=GENIEROM+4096-0x400*x; |
| 641 | |
| 642 | if(AllocGenieRW()) |
| 643 | VPageR=VPageG; |
| 644 | else |
| 645 | geniestage=2; |
| 646 | } |
| 647 | |
| 648 | static uint8 *real_pages[16]; |
| 649 | |
| 650 | void GenieSetPages(int restore) |
| 651 | { |
| 652 | int page; |
| 653 | if (restore) |
| 654 | { |
| 655 | for (page=16; page<32; page++) |
| 656 | Page[page] = real_pages[page-16]; |
| 657 | } |
| 658 | else |
| 659 | { |
| 660 | for (page=16; page<32; page++) { |
| 661 | real_pages[page-16] = Page[page]; |
| 662 | Page[page]=GENIEROM - (page<<11) + ((page&1)<<11); |
| 663 | } |
| 664 | } |
| 665 | } |
| 666 | |
| 667 | void FCEU_SaveGameSave(CartInfo *LocalHWInfo) |
| 668 | { |
| 669 | if(LocalHWInfo->battery && LocalHWInfo->SaveGame[0]) |
| 670 | { |
| 671 | FILE *sp; |
| 672 | char *soot; |
| 673 | |
| 674 | soot=FCEU_MakeFName(FCEUMKF_SAV,0,"sav"); |
| 675 | if((sp=FCEUD_UTF8fopen(soot,"wb"))==NULL) |
| 676 | { |
| 677 | FCEU_PrintError("WRAM file \"%s\" cannot be written to.\n",soot); |
| 678 | } |
| 679 | else |
| 680 | { |
| 681 | int x; |
| 682 | |
| 683 | for(x=0;x<4;x++) |
| 684 | if(LocalHWInfo->SaveGame[x]) |
| 685 | { |
| 686 | fwrite(LocalHWInfo->SaveGame[x],1, |
| 687 | LocalHWInfo->SaveGameLen[x],sp); |
| 688 | } |
| 689 | fclose(sp); |
| 690 | #ifdef GP2X |
| 691 | sync(); |
| 692 | #endif |
| 693 | } |
| 694 | free(soot); |
| 695 | } |
| 696 | } |
| 697 | |
| 698 | // hack, movie.c has to communicate with this function somehow |
| 699 | int disableBatteryLoading=0; |
| 700 | |
| 701 | void FCEU_LoadGameSave(CartInfo *LocalHWInfo) |
| 702 | { |
| 703 | if(LocalHWInfo->battery && LocalHWInfo->SaveGame[0] && !disableBatteryLoading) |
| 704 | { |
| 705 | FILE *sp; |
| 706 | char *soot; |
| 707 | |
| 708 | soot=FCEU_MakeFName(FCEUMKF_SAV,0,"sav"); |
| 709 | sp=FCEUD_UTF8fopen(soot,"rb"); |
| 710 | if(sp!=NULL) |
| 711 | { |
| 712 | int x; |
| 713 | for(x=0;x<4;x++) |
| 714 | if(LocalHWInfo->SaveGame[x]) |
| 715 | fread(LocalHWInfo->SaveGame[x],1,LocalHWInfo->SaveGameLen[x],sp); |
| 716 | fclose(sp); |
| 717 | } |
| 718 | free(soot); |
| 719 | } |
| 720 | } |
| 721 | |
| 722 | void DumpEmptyCartMapping(void) |
| 723 | { |
| 724 | int x, st=0, end=-1; |
| 725 | |
| 726 | for(x=8;x<32;x++) |
| 727 | { |
| 728 | if (Page[x] == (nothing-x*2048) || Page[x] == 0) |
| 729 | { |
| 730 | if (end != x) st=x; |
| 731 | end=x+1; |
| 732 | } |
| 733 | if (end == x) |
| 734 | printf("DumpEmptyCartMapping: %04x-%04x\n", st*2048, end*2048-1); |
| 735 | } |
| 736 | if (end==32) |
| 737 | printf("DumpEmptyCartMapping: %04x-%04x\n", st*2048, end*2048-1); |
| 738 | } |
| 739 | |
| 740 | |