| 1 | /*\r |
| 2 | * PicoDrive\r |
| 3 | * (c) Copyright Dave, 2004\r |
| 4 | * (C) notaz, 2006-2010\r |
| 5 | *\r |
| 6 | * This work is licensed under the terms of MAME license.\r |
| 7 | * See COPYING file in the top-level directory.\r |
| 8 | */\r |
| 9 | \r |
| 10 | #include "pico_int.h"\r |
| 11 | #include "../cpu/debug.h"\r |
| 12 | #include "../unzip/unzip.h"\r |
| 13 | #include <zlib.h>\r |
| 14 | \r |
| 15 | \r |
| 16 | static int rom_alloc_size;\r |
| 17 | static const char *rom_exts[] = { "bin", "gen", "smd", "iso", "sms", "gg", "sg" };\r |
| 18 | \r |
| 19 | void (*PicoCartUnloadHook)(void);\r |
| 20 | void (*PicoCartMemSetup)(void);\r |
| 21 | \r |
| 22 | void (*PicoCartLoadProgressCB)(int percent) = NULL;\r |
| 23 | void (*PicoCDLoadProgressCB)(const char *fname, int percent) = NULL; // handled in Pico/cd/cd_file.c\r |
| 24 | \r |
| 25 | int PicoGameLoaded;\r |
| 26 | \r |
| 27 | static void PicoCartDetect(const char *carthw_cfg);\r |
| 28 | \r |
| 29 | /* cso struct */\r |
| 30 | typedef struct _cso_struct\r |
| 31 | {\r |
| 32 | unsigned char in_buff[2*2048];\r |
| 33 | unsigned char out_buff[2048];\r |
| 34 | struct {\r |
| 35 | char magic[4];\r |
| 36 | unsigned int unused;\r |
| 37 | unsigned int total_bytes;\r |
| 38 | unsigned int total_bytes_high; // ignored here\r |
| 39 | unsigned int block_size; // 10h\r |
| 40 | unsigned char ver;\r |
| 41 | unsigned char align;\r |
| 42 | unsigned char reserved[2];\r |
| 43 | } header;\r |
| 44 | unsigned int fpos_in; // input file read pointer\r |
| 45 | unsigned int fpos_out; // pos in virtual decompressed file\r |
| 46 | int block_in_buff; // block which we have read in in_buff\r |
| 47 | int pad;\r |
| 48 | int index[0];\r |
| 49 | }\r |
| 50 | cso_struct;\r |
| 51 | \r |
| 52 | static int uncompress_buf(void *dest, int destLen, void *source, int sourceLen)\r |
| 53 | {\r |
| 54 | z_stream stream;\r |
| 55 | int err;\r |
| 56 | \r |
| 57 | stream.next_in = (Bytef*)source;\r |
| 58 | stream.avail_in = (uInt)sourceLen;\r |
| 59 | stream.next_out = dest;\r |
| 60 | stream.avail_out = (uInt)destLen;\r |
| 61 | \r |
| 62 | stream.zalloc = NULL;\r |
| 63 | stream.zfree = NULL;\r |
| 64 | \r |
| 65 | err = inflateInit2(&stream, -15);\r |
| 66 | if (err != Z_OK) return err;\r |
| 67 | \r |
| 68 | err = inflate(&stream, Z_FINISH);\r |
| 69 | if (err != Z_STREAM_END) {\r |
| 70 | inflateEnd(&stream);\r |
| 71 | return err;\r |
| 72 | }\r |
| 73 | //*destLen = stream.total_out;\r |
| 74 | \r |
| 75 | return inflateEnd(&stream);\r |
| 76 | }\r |
| 77 | \r |
| 78 | static const char *get_ext(const char *path)\r |
| 79 | {\r |
| 80 | const char *ext;\r |
| 81 | if (strlen(path) < 4)\r |
| 82 | return ""; // no ext\r |
| 83 | \r |
| 84 | // allow 2 or 3 char extensions for now\r |
| 85 | ext = path + strlen(path) - 2;\r |
| 86 | if (ext[-1] != '.') ext--;\r |
| 87 | if (ext[-1] != '.')\r |
| 88 | return "";\r |
| 89 | return ext;\r |
| 90 | }\r |
| 91 | \r |
| 92 | struct zip_file {\r |
| 93 | pm_file file;\r |
| 94 | ZIP *zip;\r |
| 95 | struct zipent *entry;\r |
| 96 | z_stream stream;\r |
| 97 | unsigned char inbuf[16384];\r |
| 98 | long start;\r |
| 99 | unsigned int pos;\r |
| 100 | };\r |
| 101 | \r |
| 102 | pm_file *pm_open(const char *path)\r |
| 103 | {\r |
| 104 | pm_file *file = NULL;\r |
| 105 | const char *ext;\r |
| 106 | FILE *f;\r |
| 107 | \r |
| 108 | if (path == NULL)\r |
| 109 | return NULL;\r |
| 110 | \r |
| 111 | ext = get_ext(path);\r |
| 112 | #ifndef NO_ZLIB\r |
| 113 | if (strcasecmp(ext, "zip") == 0)\r |
| 114 | {\r |
| 115 | struct zip_file *zfile = NULL;\r |
| 116 | struct zipent *zipentry;\r |
| 117 | ZIP *zipfile;\r |
| 118 | int i, ret;\r |
| 119 | \r |
| 120 | zipfile = openzip(path);\r |
| 121 | if (zipfile != NULL)\r |
| 122 | {\r |
| 123 | /* search for suitable file (right extension or large enough file) */\r |
| 124 | while ((zipentry = readzip(zipfile)) != NULL)\r |
| 125 | {\r |
| 126 | ext = get_ext(zipentry->name);\r |
| 127 | \r |
| 128 | if (zipentry->uncompressed_size >= 32*1024)\r |
| 129 | goto found_rom_zip;\r |
| 130 | \r |
| 131 | for (i = 0; i < sizeof(rom_exts)/sizeof(rom_exts[0]); i++)\r |
| 132 | if (strcasecmp(ext, rom_exts[i]) == 0)\r |
| 133 | goto found_rom_zip;\r |
| 134 | }\r |
| 135 | \r |
| 136 | /* zipfile given, but nothing found suitable for us inside */\r |
| 137 | goto zip_failed;\r |
| 138 | \r |
| 139 | found_rom_zip:\r |
| 140 | zfile = calloc(1, sizeof(*zfile));\r |
| 141 | if (zfile == NULL)\r |
| 142 | goto zip_failed;\r |
| 143 | ret = seekcompresszip(zipfile, zipentry);\r |
| 144 | if (ret != 0)\r |
| 145 | goto zip_failed;\r |
| 146 | ret = inflateInit2(&zfile->stream, -15);\r |
| 147 | if (ret != Z_OK) {\r |
| 148 | elprintf(EL_STATUS, "zip: inflateInit2 %d", ret);\r |
| 149 | goto zip_failed;\r |
| 150 | }\r |
| 151 | zfile->zip = zipfile;\r |
| 152 | zfile->entry = zipentry;\r |
| 153 | zfile->start = ftell(zipfile->fp);\r |
| 154 | zfile->file.file = zfile;\r |
| 155 | zfile->file.size = zipentry->uncompressed_size;\r |
| 156 | zfile->file.type = PMT_ZIP;\r |
| 157 | strncpy(zfile->file.ext, ext, sizeof(zfile->file.ext) - 1);\r |
| 158 | return &zfile->file;\r |
| 159 | \r |
| 160 | zip_failed:\r |
| 161 | closezip(zipfile);\r |
| 162 | free(zfile);\r |
| 163 | return NULL;\r |
| 164 | }\r |
| 165 | }\r |
| 166 | else\r |
| 167 | #endif\r |
| 168 | if (strcasecmp(ext, "cso") == 0)\r |
| 169 | {\r |
| 170 | cso_struct *cso = NULL, *tmp = NULL;\r |
| 171 | int size;\r |
| 172 | f = fopen(path, "rb");\r |
| 173 | if (f == NULL)\r |
| 174 | goto cso_failed;\r |
| 175 | \r |
| 176 | #ifdef __GP2X__\r |
| 177 | /* we use our own buffering */\r |
| 178 | setvbuf(f, NULL, _IONBF, 0);\r |
| 179 | #endif\r |
| 180 | \r |
| 181 | cso = malloc(sizeof(*cso));\r |
| 182 | if (cso == NULL)\r |
| 183 | goto cso_failed;\r |
| 184 | \r |
| 185 | if (fread(&cso->header, 1, sizeof(cso->header), f) != sizeof(cso->header))\r |
| 186 | goto cso_failed;\r |
| 187 | \r |
| 188 | if (strncmp(cso->header.magic, "CISO", 4) != 0) {\r |
| 189 | elprintf(EL_STATUS, "cso: bad header");\r |
| 190 | goto cso_failed;\r |
| 191 | }\r |
| 192 | \r |
| 193 | if (cso->header.block_size != 2048) {\r |
| 194 | elprintf(EL_STATUS, "cso: bad block size (%u)", cso->header.block_size);\r |
| 195 | goto cso_failed;\r |
| 196 | }\r |
| 197 | \r |
| 198 | size = ((cso->header.total_bytes >> 11) + 1)*4 + sizeof(*cso);\r |
| 199 | tmp = realloc(cso, size);\r |
| 200 | if (tmp == NULL)\r |
| 201 | goto cso_failed;\r |
| 202 | cso = tmp;\r |
| 203 | elprintf(EL_STATUS, "allocated %i bytes for CSO struct", size);\r |
| 204 | \r |
| 205 | size -= sizeof(*cso); // index size\r |
| 206 | if (fread(cso->index, 1, size, f) != size) {\r |
| 207 | elprintf(EL_STATUS, "cso: premature EOF");\r |
| 208 | goto cso_failed;\r |
| 209 | }\r |
| 210 | \r |
| 211 | // all ok\r |
| 212 | cso->fpos_in = ftell(f);\r |
| 213 | cso->fpos_out = 0;\r |
| 214 | cso->block_in_buff = -1;\r |
| 215 | file = calloc(1, sizeof(*file));\r |
| 216 | if (file == NULL) goto cso_failed;\r |
| 217 | file->file = f;\r |
| 218 | file->param = cso;\r |
| 219 | file->size = cso->header.total_bytes;\r |
| 220 | file->type = PMT_CSO;\r |
| 221 | return file;\r |
| 222 | \r |
| 223 | cso_failed:\r |
| 224 | if (cso != NULL) free(cso);\r |
| 225 | if (f != NULL) fclose(f);\r |
| 226 | return NULL;\r |
| 227 | }\r |
| 228 | \r |
| 229 | /* not a zip, treat as uncompressed file */\r |
| 230 | f = fopen(path, "rb");\r |
| 231 | if (f == NULL) return NULL;\r |
| 232 | \r |
| 233 | file = calloc(1, sizeof(*file));\r |
| 234 | if (file == NULL) {\r |
| 235 | fclose(f);\r |
| 236 | return NULL;\r |
| 237 | }\r |
| 238 | fseek(f, 0, SEEK_END);\r |
| 239 | file->file = f;\r |
| 240 | file->param = NULL;\r |
| 241 | file->size = ftell(f);\r |
| 242 | file->type = PMT_UNCOMPRESSED;\r |
| 243 | strncpy(file->ext, ext, sizeof(file->ext) - 1);\r |
| 244 | fseek(f, 0, SEEK_SET);\r |
| 245 | \r |
| 246 | #ifdef __GP2X__\r |
| 247 | if (file->size > 0x400000)\r |
| 248 | /* we use our own buffering */\r |
| 249 | setvbuf(f, NULL, _IONBF, 0);\r |
| 250 | #endif\r |
| 251 | \r |
| 252 | return file;\r |
| 253 | }\r |
| 254 | \r |
| 255 | size_t pm_read(void *ptr, size_t bytes, pm_file *stream)\r |
| 256 | {\r |
| 257 | int ret;\r |
| 258 | \r |
| 259 | if (stream->type == PMT_UNCOMPRESSED)\r |
| 260 | {\r |
| 261 | ret = fread(ptr, 1, bytes, stream->file);\r |
| 262 | }\r |
| 263 | #ifndef NO_ZLIB\r |
| 264 | else if (stream->type == PMT_ZIP)\r |
| 265 | {\r |
| 266 | struct zip_file *z = stream->file;\r |
| 267 | \r |
| 268 | if (z->entry->compression_method == 0) {\r |
| 269 | int ret = fread(ptr, 1, bytes, z->zip->fp);\r |
| 270 | z->pos += ret;\r |
| 271 | return ret;\r |
| 272 | }\r |
| 273 | \r |
| 274 | z->stream.next_out = ptr;\r |
| 275 | z->stream.avail_out = bytes;\r |
| 276 | while (z->stream.avail_out != 0) {\r |
| 277 | if (z->stream.avail_in == 0) {\r |
| 278 | z->stream.avail_in = fread(z->inbuf, 1, sizeof(z->inbuf), z->zip->fp);\r |
| 279 | if (z->stream.avail_in == 0)\r |
| 280 | break;\r |
| 281 | z->stream.next_in = z->inbuf;\r |
| 282 | }\r |
| 283 | ret = inflate(&z->stream, Z_NO_FLUSH);\r |
| 284 | if (ret == Z_STREAM_END)\r |
| 285 | break;\r |
| 286 | if (ret != Z_OK) {\r |
| 287 | elprintf(EL_STATUS, "zip: inflate: %d", ret);\r |
| 288 | return 0;\r |
| 289 | }\r |
| 290 | }\r |
| 291 | z->pos += bytes - z->stream.avail_out;\r |
| 292 | return bytes - z->stream.avail_out;\r |
| 293 | }\r |
| 294 | #endif\r |
| 295 | else if (stream->type == PMT_CSO)\r |
| 296 | {\r |
| 297 | cso_struct *cso = stream->param;\r |
| 298 | int read_pos, read_len, out_offs, rret;\r |
| 299 | int block = cso->fpos_out >> 11;\r |
| 300 | int index = cso->index[block];\r |
| 301 | int index_end = cso->index[block+1];\r |
| 302 | unsigned char *out = ptr, *tmp_dst;\r |
| 303 | \r |
| 304 | ret = 0;\r |
| 305 | while (bytes != 0)\r |
| 306 | {\r |
| 307 | out_offs = cso->fpos_out&0x7ff;\r |
| 308 | if (out_offs == 0 && bytes >= 2048)\r |
| 309 | tmp_dst = out;\r |
| 310 | else tmp_dst = cso->out_buff;\r |
| 311 | \r |
| 312 | read_pos = (index&0x7fffffff) << cso->header.align;\r |
| 313 | \r |
| 314 | if (index < 0) {\r |
| 315 | if (read_pos != cso->fpos_in)\r |
| 316 | fseek(stream->file, read_pos, SEEK_SET);\r |
| 317 | rret = fread(tmp_dst, 1, 2048, stream->file);\r |
| 318 | cso->fpos_in = read_pos + rret;\r |
| 319 | if (rret != 2048) break;\r |
| 320 | } else {\r |
| 321 | read_len = (((index_end&0x7fffffff) << cso->header.align) - read_pos) & 0xfff;\r |
| 322 | if (block != cso->block_in_buff)\r |
| 323 | {\r |
| 324 | if (read_pos != cso->fpos_in)\r |
| 325 | fseek(stream->file, read_pos, SEEK_SET);\r |
| 326 | rret = fread(cso->in_buff, 1, read_len, stream->file);\r |
| 327 | cso->fpos_in = read_pos + rret;\r |
| 328 | if (rret != read_len) {\r |
| 329 | elprintf(EL_STATUS, "cso: read failed @ %08x", read_pos);\r |
| 330 | break;\r |
| 331 | }\r |
| 332 | cso->block_in_buff = block;\r |
| 333 | }\r |
| 334 | rret = uncompress_buf(tmp_dst, 2048, cso->in_buff, read_len);\r |
| 335 | if (rret != 0) {\r |
| 336 | elprintf(EL_STATUS, "cso: uncompress failed @ %08x with %i", read_pos, rret);\r |
| 337 | break;\r |
| 338 | }\r |
| 339 | }\r |
| 340 | \r |
| 341 | rret = 2048;\r |
| 342 | if (out_offs != 0 || bytes < 2048) {\r |
| 343 | //elprintf(EL_STATUS, "cso: unaligned/nonfull @ %08x, offs=%i, len=%u", cso->fpos_out, out_offs, bytes);\r |
| 344 | if (bytes < rret) rret = bytes;\r |
| 345 | if (2048 - out_offs < rret) rret = 2048 - out_offs;\r |
| 346 | memcpy(out, tmp_dst + out_offs, rret);\r |
| 347 | }\r |
| 348 | ret += rret;\r |
| 349 | out += rret;\r |
| 350 | cso->fpos_out += rret;\r |
| 351 | bytes -= rret;\r |
| 352 | block++;\r |
| 353 | index = index_end;\r |
| 354 | index_end = cso->index[block+1];\r |
| 355 | }\r |
| 356 | }\r |
| 357 | else\r |
| 358 | ret = 0;\r |
| 359 | \r |
| 360 | return ret;\r |
| 361 | }\r |
| 362 | \r |
| 363 | int pm_seek(pm_file *stream, long offset, int whence)\r |
| 364 | {\r |
| 365 | if (stream->type == PMT_UNCOMPRESSED)\r |
| 366 | {\r |
| 367 | fseek(stream->file, offset, whence);\r |
| 368 | return ftell(stream->file);\r |
| 369 | }\r |
| 370 | #ifndef NO_ZLIB\r |
| 371 | else if (stream->type == PMT_ZIP)\r |
| 372 | {\r |
| 373 | struct zip_file *z = stream->file;\r |
| 374 | unsigned int pos = z->pos;\r |
| 375 | int ret;\r |
| 376 | \r |
| 377 | switch (whence)\r |
| 378 | {\r |
| 379 | case SEEK_CUR: pos += offset; break;\r |
| 380 | case SEEK_SET: pos = offset; break;\r |
| 381 | case SEEK_END: pos = stream->size - offset; break;\r |
| 382 | }\r |
| 383 | if (z->entry->compression_method == 0) {\r |
| 384 | ret = fseek(z->zip->fp, z->start + pos, SEEK_SET);\r |
| 385 | if (ret == 0)\r |
| 386 | return (z->pos = pos);\r |
| 387 | return -1;\r |
| 388 | }\r |
| 389 | offset = pos - z->pos;\r |
| 390 | if (pos < z->pos) {\r |
| 391 | // full decompress from the start\r |
| 392 | fseek(z->zip->fp, z->start, SEEK_SET);\r |
| 393 | z->stream.avail_in = 0;\r |
| 394 | z->stream.next_in = z->inbuf;\r |
| 395 | inflateReset(&z->stream);\r |
| 396 | z->pos = 0;\r |
| 397 | offset = pos;\r |
| 398 | }\r |
| 399 | \r |
| 400 | if (PicoMessage != NULL && offset > 4 * 1024 * 1024)\r |
| 401 | PicoMessage("Decompressing data...");\r |
| 402 | \r |
| 403 | while (offset > 0) {\r |
| 404 | char buf[16 * 1024];\r |
| 405 | size_t l = offset > sizeof(buf) ? sizeof(buf) : offset;\r |
| 406 | ret = pm_read(buf, l, stream);\r |
| 407 | if (ret != l)\r |
| 408 | break;\r |
| 409 | offset -= l;\r |
| 410 | }\r |
| 411 | return z->pos;\r |
| 412 | }\r |
| 413 | #endif\r |
| 414 | else if (stream->type == PMT_CSO)\r |
| 415 | {\r |
| 416 | cso_struct *cso = stream->param;\r |
| 417 | switch (whence)\r |
| 418 | {\r |
| 419 | case SEEK_CUR: cso->fpos_out += offset; break;\r |
| 420 | case SEEK_SET: cso->fpos_out = offset; break;\r |
| 421 | case SEEK_END: cso->fpos_out = cso->header.total_bytes - offset; break;\r |
| 422 | }\r |
| 423 | return cso->fpos_out;\r |
| 424 | }\r |
| 425 | else\r |
| 426 | return -1;\r |
| 427 | }\r |
| 428 | \r |
| 429 | int pm_close(pm_file *fp)\r |
| 430 | {\r |
| 431 | int ret = 0;\r |
| 432 | \r |
| 433 | if (fp == NULL) return EOF;\r |
| 434 | \r |
| 435 | if (fp->type == PMT_UNCOMPRESSED)\r |
| 436 | {\r |
| 437 | fclose(fp->file);\r |
| 438 | }\r |
| 439 | #ifndef NO_ZLIB\r |
| 440 | else if (fp->type == PMT_ZIP)\r |
| 441 | {\r |
| 442 | struct zip_file *z = fp->file;\r |
| 443 | inflateEnd(&z->stream);\r |
| 444 | closezip(z->zip);\r |
| 445 | }\r |
| 446 | #endif\r |
| 447 | else if (fp->type == PMT_CSO)\r |
| 448 | {\r |
| 449 | free(fp->param);\r |
| 450 | fclose(fp->file);\r |
| 451 | }\r |
| 452 | else\r |
| 453 | ret = EOF;\r |
| 454 | \r |
| 455 | free(fp);\r |
| 456 | return ret;\r |
| 457 | }\r |
| 458 | \r |
| 459 | // byteswap, data needs to be int aligned, src can match dst\r |
| 460 | void Byteswap(void *dst, const void *src, int len)\r |
| 461 | {\r |
| 462 | const unsigned int *ps = src;\r |
| 463 | unsigned int *pd = dst;\r |
| 464 | int i, m;\r |
| 465 | \r |
| 466 | if (len < 2)\r |
| 467 | return;\r |
| 468 | \r |
| 469 | m = 0x00ff00ff;\r |
| 470 | for (i = 0; i < len / 4; i++) {\r |
| 471 | unsigned int t = ps[i];\r |
| 472 | pd[i] = ((t & m) << 8) | ((t & ~m) >> 8);\r |
| 473 | }\r |
| 474 | }\r |
| 475 | \r |
| 476 | // Interleve a 16k block and byteswap\r |
| 477 | static int InterleveBlock(unsigned char *dest,unsigned char *src)\r |
| 478 | {\r |
| 479 | int i=0;\r |
| 480 | for (i=0;i<0x2000;i++) dest[(i<<1) ]=src[ i]; // Odd\r |
| 481 | for (i=0;i<0x2000;i++) dest[(i<<1)+1]=src[0x2000+i]; // Even\r |
| 482 | return 0;\r |
| 483 | }\r |
| 484 | \r |
| 485 | // Decode a SMD file\r |
| 486 | static int DecodeSmd(unsigned char *data,int len)\r |
| 487 | {\r |
| 488 | unsigned char *temp=NULL;\r |
| 489 | int i=0;\r |
| 490 | \r |
| 491 | temp=(unsigned char *)malloc(0x4000);\r |
| 492 | if (temp==NULL) return 1;\r |
| 493 | memset(temp,0,0x4000);\r |
| 494 | \r |
| 495 | // Interleve each 16k block and shift down by 0x200:\r |
| 496 | for (i=0; i+0x4200<=len; i+=0x4000)\r |
| 497 | {\r |
| 498 | InterleveBlock(temp,data+0x200+i); // Interleve 16k to temporary buffer\r |
| 499 | memcpy(data+i,temp,0x4000); // Copy back in\r |
| 500 | }\r |
| 501 | \r |
| 502 | free(temp);\r |
| 503 | return 0;\r |
| 504 | }\r |
| 505 | \r |
| 506 | static unsigned char *PicoCartAlloc(int filesize, int is_sms)\r |
| 507 | {\r |
| 508 | unsigned char *rom;\r |
| 509 | \r |
| 510 | if (is_sms) {\r |
| 511 | // make size power of 2 for easier banking handling\r |
| 512 | int s = 0, tmp = filesize;\r |
| 513 | while ((tmp >>= 1) != 0)\r |
| 514 | s++;\r |
| 515 | if (filesize > (1 << s))\r |
| 516 | s++;\r |
| 517 | rom_alloc_size = 1 << s;\r |
| 518 | // be sure we can cover all address space\r |
| 519 | if (rom_alloc_size < 0x10000)\r |
| 520 | rom_alloc_size = 0x10000;\r |
| 521 | }\r |
| 522 | else {\r |
| 523 | // make alloc size at least sizeof(mcd_state),\r |
| 524 | // in case we want to switch to CD mode\r |
| 525 | if (filesize < sizeof(mcd_state))\r |
| 526 | filesize = sizeof(mcd_state);\r |
| 527 | \r |
| 528 | // align to 512K for memhandlers\r |
| 529 | rom_alloc_size = (filesize + 0x7ffff) & ~0x7ffff;\r |
| 530 | }\r |
| 531 | \r |
| 532 | if (rom_alloc_size - filesize < 4)\r |
| 533 | rom_alloc_size += 4; // padding for out-of-bound exec protection\r |
| 534 | \r |
| 535 | // Allocate space for the rom plus padding\r |
| 536 | // use special address for 32x dynarec\r |
| 537 | rom = plat_mmap(0x02000000, rom_alloc_size, 0, 0);\r |
| 538 | return rom;\r |
| 539 | }\r |
| 540 | \r |
| 541 | int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize,int is_sms)\r |
| 542 | {\r |
| 543 | unsigned char *rom;\r |
| 544 | int size, bytes_read;\r |
| 545 | \r |
| 546 | if (f == NULL)\r |
| 547 | return 1;\r |
| 548 | \r |
| 549 | size = f->size;\r |
| 550 | if (size <= 0) return 1;\r |
| 551 | size = (size+3)&~3; // Round up to a multiple of 4\r |
| 552 | \r |
| 553 | // Allocate space for the rom plus padding\r |
| 554 | rom = PicoCartAlloc(size, is_sms);\r |
| 555 | if (rom == NULL) {\r |
| 556 | elprintf(EL_STATUS, "out of memory (wanted %i)", size);\r |
| 557 | return 2;\r |
| 558 | }\r |
| 559 | \r |
| 560 | if (PicoCartLoadProgressCB != NULL)\r |
| 561 | {\r |
| 562 | // read ROM in blocks, just for fun\r |
| 563 | int ret;\r |
| 564 | unsigned char *p = rom;\r |
| 565 | bytes_read=0;\r |
| 566 | do\r |
| 567 | {\r |
| 568 | int todo = size - bytes_read;\r |
| 569 | if (todo > 256*1024) todo = 256*1024;\r |
| 570 | ret = pm_read(p,todo,f);\r |
| 571 | bytes_read += ret;\r |
| 572 | p += ret;\r |
| 573 | PicoCartLoadProgressCB(bytes_read * 100 / size);\r |
| 574 | }\r |
| 575 | while (ret > 0);\r |
| 576 | }\r |
| 577 | else\r |
| 578 | bytes_read = pm_read(rom,size,f); // Load up the rom\r |
| 579 | if (bytes_read <= 0) {\r |
| 580 | elprintf(EL_STATUS, "read failed");\r |
| 581 | plat_munmap(rom, rom_alloc_size);\r |
| 582 | return 3;\r |
| 583 | }\r |
| 584 | \r |
| 585 | if (!is_sms)\r |
| 586 | {\r |
| 587 | // maybe we are loading MegaCD BIOS?\r |
| 588 | if (!(PicoAHW & PAHW_MCD) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) ||\r |
| 589 | !strncmp((char *)rom+0x128, "BOOT", 4))) {\r |
| 590 | PicoAHW |= PAHW_MCD;\r |
| 591 | }\r |
| 592 | \r |
| 593 | // Check for SMD:\r |
| 594 | if (size >= 0x4200 && (size&0x3fff) == 0x200 &&\r |
| 595 | ((rom[0x2280] == 'S' && rom[0x280] == 'E') || (rom[0x280] == 'S' && rom[0x2281] == 'E'))) {\r |
| 596 | elprintf(EL_STATUS, "SMD format detected.");\r |
| 597 | DecodeSmd(rom,size); size-=0x200; // Decode and byteswap SMD\r |
| 598 | }\r |
| 599 | else Byteswap(rom, rom, size); // Just byteswap\r |
| 600 | }\r |
| 601 | else\r |
| 602 | {\r |
| 603 | if (size >= 0x4200 && (size&0x3fff) == 0x200) {\r |
| 604 | elprintf(EL_STATUS, "SMD format detected.");\r |
| 605 | // at least here it's not interleaved\r |
| 606 | size -= 0x200;\r |
| 607 | memmove(rom, rom + 0x200, size);\r |
| 608 | }\r |
| 609 | }\r |
| 610 | \r |
| 611 | if (prom) *prom = rom;\r |
| 612 | if (psize) *psize = size;\r |
| 613 | \r |
| 614 | return 0;\r |
| 615 | }\r |
| 616 | \r |
| 617 | // Insert a cartridge:\r |
| 618 | int PicoCartInsert(unsigned char *rom, unsigned int romsize, const char *carthw_cfg)\r |
| 619 | {\r |
| 620 | // notaz: add a 68k "jump one op back" opcode to the end of ROM.\r |
| 621 | // This will hang the emu, but will prevent nasty crashes.\r |
| 622 | // note: 4 bytes are padded to every ROM\r |
| 623 | if (rom != NULL)\r |
| 624 | *(unsigned long *)(rom+romsize) = 0xFFFE4EFA; // 4EFA FFFE byteswapped\r |
| 625 | \r |
| 626 | Pico.rom=rom;\r |
| 627 | Pico.romsize=romsize;\r |
| 628 | \r |
| 629 | if (SRam.data) {\r |
| 630 | free(SRam.data);\r |
| 631 | SRam.data = NULL;\r |
| 632 | }\r |
| 633 | \r |
| 634 | if (PicoCartUnloadHook != NULL) {\r |
| 635 | PicoCartUnloadHook();\r |
| 636 | PicoCartUnloadHook = NULL;\r |
| 637 | }\r |
| 638 | pdb_cleanup();\r |
| 639 | \r |
| 640 | PicoAHW &= PAHW_MCD|PAHW_SMS;\r |
| 641 | \r |
| 642 | PicoCartMemSetup = NULL;\r |
| 643 | PicoDmaHook = NULL;\r |
| 644 | PicoResetHook = NULL;\r |
| 645 | PicoLineHook = NULL;\r |
| 646 | PicoLoadStateHook = NULL;\r |
| 647 | carthw_chunks = NULL;\r |
| 648 | \r |
| 649 | if (!(PicoAHW & (PAHW_MCD|PAHW_SMS)))\r |
| 650 | PicoCartDetect(carthw_cfg);\r |
| 651 | \r |
| 652 | // setup correct memory map for loaded ROM\r |
| 653 | switch (PicoAHW) {\r |
| 654 | default:\r |
| 655 | elprintf(EL_STATUS|EL_ANOMALY, "starting in unknown hw configuration: %x", PicoAHW);\r |
| 656 | case 0:\r |
| 657 | case PAHW_SVP: PicoMemSetup(); break;\r |
| 658 | case PAHW_MCD: PicoMemSetupCD(); break;\r |
| 659 | case PAHW_PICO: PicoMemSetupPico(); break;\r |
| 660 | case PAHW_SMS: PicoMemSetupMS(); break;\r |
| 661 | }\r |
| 662 | \r |
| 663 | if (PicoCartMemSetup != NULL)\r |
| 664 | PicoCartMemSetup();\r |
| 665 | \r |
| 666 | if (PicoAHW & PAHW_SMS)\r |
| 667 | PicoPowerMS();\r |
| 668 | else\r |
| 669 | PicoPower();\r |
| 670 | \r |
| 671 | PicoGameLoaded = 1;\r |
| 672 | return 0;\r |
| 673 | }\r |
| 674 | \r |
| 675 | int PicoCartResize(int newsize)\r |
| 676 | {\r |
| 677 | void *tmp = plat_mremap(Pico.rom, rom_alloc_size, newsize);\r |
| 678 | if (tmp == NULL)\r |
| 679 | return -1;\r |
| 680 | \r |
| 681 | Pico.rom = tmp;\r |
| 682 | rom_alloc_size = newsize;\r |
| 683 | return 0;\r |
| 684 | }\r |
| 685 | \r |
| 686 | void PicoCartUnload(void)\r |
| 687 | {\r |
| 688 | if (PicoCartUnloadHook != NULL) {\r |
| 689 | PicoCartUnloadHook();\r |
| 690 | PicoCartUnloadHook = NULL;\r |
| 691 | }\r |
| 692 | \r |
| 693 | if (PicoAHW & PAHW_32X)\r |
| 694 | PicoUnload32x();\r |
| 695 | \r |
| 696 | if (Pico.rom != NULL) {\r |
| 697 | SekFinishIdleDet();\r |
| 698 | plat_munmap(Pico.rom, rom_alloc_size);\r |
| 699 | Pico.rom = NULL;\r |
| 700 | }\r |
| 701 | PicoGameLoaded = 0;\r |
| 702 | }\r |
| 703 | \r |
| 704 | static unsigned int rom_crc32(void)\r |
| 705 | {\r |
| 706 | unsigned int crc;\r |
| 707 | elprintf(EL_STATUS, "caclulating CRC32..");\r |
| 708 | \r |
| 709 | // have to unbyteswap for calculation..\r |
| 710 | Byteswap(Pico.rom, Pico.rom, Pico.romsize);\r |
| 711 | crc = crc32(0, Pico.rom, Pico.romsize);\r |
| 712 | Byteswap(Pico.rom, Pico.rom, Pico.romsize);\r |
| 713 | return crc;\r |
| 714 | }\r |
| 715 | \r |
| 716 | static int rom_strcmp(int rom_offset, const char *s1)\r |
| 717 | {\r |
| 718 | int i, len = strlen(s1);\r |
| 719 | const char *s_rom = (const char *)Pico.rom;\r |
| 720 | if (rom_offset + len > Pico.romsize)\r |
| 721 | return 0;\r |
| 722 | for (i = 0; i < len; i++)\r |
| 723 | if (s1[i] != s_rom[(i + rom_offset) ^ 1])\r |
| 724 | return 1;\r |
| 725 | return 0;\r |
| 726 | }\r |
| 727 | \r |
| 728 | static unsigned int rom_read32(int addr)\r |
| 729 | {\r |
| 730 | unsigned short *m = (unsigned short *)(Pico.rom + addr);\r |
| 731 | return (m[0] << 16) | m[1];\r |
| 732 | }\r |
| 733 | \r |
| 734 | static char *sskip(char *s)\r |
| 735 | {\r |
| 736 | while (*s && isspace_(*s))\r |
| 737 | s++;\r |
| 738 | return s;\r |
| 739 | }\r |
| 740 | \r |
| 741 | static void rstrip(char *s)\r |
| 742 | {\r |
| 743 | char *p;\r |
| 744 | for (p = s + strlen(s) - 1; p >= s; p--)\r |
| 745 | if (isspace_(*p))\r |
| 746 | *p = 0;\r |
| 747 | }\r |
| 748 | \r |
| 749 | static int parse_3_vals(char *p, int *val0, int *val1, int *val2)\r |
| 750 | {\r |
| 751 | char *r;\r |
| 752 | *val0 = strtoul(p, &r, 0);\r |
| 753 | if (r == p)\r |
| 754 | goto bad;\r |
| 755 | p = sskip(r);\r |
| 756 | if (*p++ != ',')\r |
| 757 | goto bad;\r |
| 758 | *val1 = strtoul(p, &r, 0);\r |
| 759 | if (r == p)\r |
| 760 | goto bad;\r |
| 761 | p = sskip(r);\r |
| 762 | if (*p++ != ',')\r |
| 763 | goto bad;\r |
| 764 | *val2 = strtoul(p, &r, 0);\r |
| 765 | if (r == p)\r |
| 766 | goto bad;\r |
| 767 | \r |
| 768 | return 1;\r |
| 769 | bad:\r |
| 770 | return 0;\r |
| 771 | }\r |
| 772 | \r |
| 773 | static int is_expr(const char *expr, char **pr)\r |
| 774 | {\r |
| 775 | int len = strlen(expr);\r |
| 776 | char *p = *pr;\r |
| 777 | \r |
| 778 | if (strncmp(expr, p, len) != 0)\r |
| 779 | return 0;\r |
| 780 | p = sskip(p + len);\r |
| 781 | if (*p != '=')\r |
| 782 | return 0; // wrong or malformed\r |
| 783 | \r |
| 784 | *pr = sskip(p + 1);\r |
| 785 | return 1;\r |
| 786 | }\r |
| 787 | \r |
| 788 | #include "carthw_cfg.c"\r |
| 789 | \r |
| 790 | static void parse_carthw(const char *carthw_cfg, int *fill_sram)\r |
| 791 | {\r |
| 792 | int line = 0, any_checks_passed = 0, skip_sect = 0;\r |
| 793 | const char *s, *builtin = builtin_carthw_cfg;\r |
| 794 | int tmp, rom_crc = 0;\r |
| 795 | char buff[256], *p, *r;\r |
| 796 | FILE *f;\r |
| 797 | \r |
| 798 | f = fopen(carthw_cfg, "r");\r |
| 799 | if (f == NULL)\r |
| 800 | f = fopen("pico/carthw.cfg", "r");\r |
| 801 | if (f == NULL)\r |
| 802 | elprintf(EL_STATUS, "couldn't open carthw.cfg!");\r |
| 803 | \r |
| 804 | for (;;)\r |
| 805 | {\r |
| 806 | if (f != NULL) {\r |
| 807 | p = fgets(buff, sizeof(buff), f);\r |
| 808 | if (p == NULL)\r |
| 809 | break;\r |
| 810 | }\r |
| 811 | else {\r |
| 812 | if (*builtin == 0)\r |
| 813 | break;\r |
| 814 | for (s = builtin; *s != 0 && *s != '\n'; s++)\r |
| 815 | ;\r |
| 816 | while (*s == '\n')\r |
| 817 | s++;\r |
| 818 | tmp = s - builtin;\r |
| 819 | if (tmp > sizeof(buff) - 1)\r |
| 820 | tmp = sizeof(buff) - 1;\r |
| 821 | memcpy(buff, builtin, tmp);\r |
| 822 | buff[tmp] = 0;\r |
| 823 | p = buff;\r |
| 824 | builtin = s;\r |
| 825 | }\r |
| 826 | \r |
| 827 | line++;\r |
| 828 | p = sskip(p);\r |
| 829 | if (*p == 0 || *p == '#')\r |
| 830 | continue;\r |
| 831 | \r |
| 832 | if (*p == '[') {\r |
| 833 | any_checks_passed = 0;\r |
| 834 | skip_sect = 0;\r |
| 835 | continue;\r |
| 836 | }\r |
| 837 | \r |
| 838 | if (skip_sect)\r |
| 839 | continue;\r |
| 840 | \r |
| 841 | /* look for checks */\r |
| 842 | if (is_expr("check_str", &p))\r |
| 843 | {\r |
| 844 | int offs;\r |
| 845 | offs = strtoul(p, &r, 0);\r |
| 846 | if (offs < 0 || offs > Pico.romsize) {\r |
| 847 | elprintf(EL_STATUS, "carthw:%d: check_str offs out of range: %d\n", line, offs);\r |
| 848 | goto bad;\r |
| 849 | }\r |
| 850 | p = sskip(r);\r |
| 851 | if (*p != ',')\r |
| 852 | goto bad;\r |
| 853 | p = sskip(p + 1);\r |
| 854 | if (*p != '"')\r |
| 855 | goto bad;\r |
| 856 | p++;\r |
| 857 | r = strchr(p, '"');\r |
| 858 | if (r == NULL)\r |
| 859 | goto bad;\r |
| 860 | *r = 0;\r |
| 861 | \r |
| 862 | if (rom_strcmp(offs, p) == 0)\r |
| 863 | any_checks_passed = 1;\r |
| 864 | else\r |
| 865 | skip_sect = 1;\r |
| 866 | continue;\r |
| 867 | }\r |
| 868 | else if (is_expr("check_size_gt", &p))\r |
| 869 | {\r |
| 870 | int size;\r |
| 871 | size = strtoul(p, &r, 0);\r |
| 872 | if (r == p || size < 0)\r |
| 873 | goto bad;\r |
| 874 | \r |
| 875 | if (Pico.romsize > size)\r |
| 876 | any_checks_passed = 1;\r |
| 877 | else\r |
| 878 | skip_sect = 1;\r |
| 879 | continue;\r |
| 880 | }\r |
| 881 | else if (is_expr("check_csum", &p))\r |
| 882 | {\r |
| 883 | int csum;\r |
| 884 | csum = strtoul(p, &r, 0);\r |
| 885 | if (r == p || (csum & 0xffff0000))\r |
| 886 | goto bad;\r |
| 887 | \r |
| 888 | if (csum == (rom_read32(0x18c) & 0xffff))\r |
| 889 | any_checks_passed = 1;\r |
| 890 | else\r |
| 891 | skip_sect = 1;\r |
| 892 | continue;\r |
| 893 | }\r |
| 894 | else if (is_expr("check_crc32", &p))\r |
| 895 | {\r |
| 896 | unsigned int crc;\r |
| 897 | crc = strtoul(p, &r, 0);\r |
| 898 | if (r == p)\r |
| 899 | goto bad;\r |
| 900 | \r |
| 901 | if (rom_crc == 0)\r |
| 902 | rom_crc = rom_crc32();\r |
| 903 | if (crc == rom_crc)\r |
| 904 | any_checks_passed = 1;\r |
| 905 | else\r |
| 906 | skip_sect = 1;\r |
| 907 | continue;\r |
| 908 | }\r |
| 909 | \r |
| 910 | /* now time for actions */\r |
| 911 | if (is_expr("hw", &p)) {\r |
| 912 | if (!any_checks_passed)\r |
| 913 | goto no_checks;\r |
| 914 | rstrip(p);\r |
| 915 | \r |
| 916 | if (strcmp(p, "svp") == 0)\r |
| 917 | PicoSVPStartup();\r |
| 918 | else if (strcmp(p, "pico") == 0)\r |
| 919 | PicoInitPico();\r |
| 920 | else if (strcmp(p, "prot") == 0)\r |
| 921 | carthw_sprot_startup();\r |
| 922 | else if (strcmp(p, "ssf2_mapper") == 0)\r |
| 923 | carthw_ssf2_startup();\r |
| 924 | else if (strcmp(p, "x_in_1_mapper") == 0)\r |
| 925 | carthw_Xin1_startup();\r |
| 926 | else if (strcmp(p, "realtec_mapper") == 0)\r |
| 927 | carthw_realtec_startup();\r |
| 928 | else if (strcmp(p, "radica_mapper") == 0)\r |
| 929 | carthw_radica_startup();\r |
| 930 | else if (strcmp(p, "piersolar_mapper") == 0)\r |
| 931 | carthw_pier_startup();\r |
| 932 | else if (strcmp(p, "prot_lk3") == 0)\r |
| 933 | carthw_prot_lk3_startup();\r |
| 934 | else {\r |
| 935 | elprintf(EL_STATUS, "carthw:%d: unsupported mapper: %s", line, p);\r |
| 936 | skip_sect = 1;\r |
| 937 | }\r |
| 938 | continue;\r |
| 939 | }\r |
| 940 | if (is_expr("sram_range", &p)) {\r |
| 941 | int start, end;\r |
| 942 | \r |
| 943 | if (!any_checks_passed)\r |
| 944 | goto no_checks;\r |
| 945 | rstrip(p);\r |
| 946 | \r |
| 947 | start = strtoul(p, &r, 0);\r |
| 948 | if (r == p)\r |
| 949 | goto bad;\r |
| 950 | p = sskip(r);\r |
| 951 | if (*p != ',')\r |
| 952 | goto bad;\r |
| 953 | p = sskip(p + 1);\r |
| 954 | end = strtoul(p, &r, 0);\r |
| 955 | if (r == p)\r |
| 956 | goto bad;\r |
| 957 | if (((start | end) & 0xff000000) || start > end) {\r |
| 958 | elprintf(EL_STATUS, "carthw:%d: bad sram_range: %08x - %08x", line, start, end);\r |
| 959 | goto bad_nomsg;\r |
| 960 | }\r |
| 961 | SRam.start = start;\r |
| 962 | SRam.end = end;\r |
| 963 | continue;\r |
| 964 | }\r |
| 965 | else if (is_expr("prop", &p)) {\r |
| 966 | if (!any_checks_passed)\r |
| 967 | goto no_checks;\r |
| 968 | rstrip(p);\r |
| 969 | \r |
| 970 | if (strcmp(p, "no_sram") == 0)\r |
| 971 | SRam.flags &= ~SRF_ENABLED;\r |
| 972 | else if (strcmp(p, "no_eeprom") == 0)\r |
| 973 | SRam.flags &= ~SRF_EEPROM;\r |
| 974 | else if (strcmp(p, "filled_sram") == 0)\r |
| 975 | *fill_sram = 1;\r |
| 976 | else if (strcmp(p, "force_6btn") == 0)\r |
| 977 | PicoQuirks |= PQUIRK_FORCE_6BTN;\r |
| 978 | else {\r |
| 979 | elprintf(EL_STATUS, "carthw:%d: unsupported prop: %s", line, p);\r |
| 980 | goto bad_nomsg;\r |
| 981 | }\r |
| 982 | elprintf(EL_STATUS, "game prop: %s", p);\r |
| 983 | continue;\r |
| 984 | }\r |
| 985 | else if (is_expr("eeprom_type", &p)) {\r |
| 986 | int type;\r |
| 987 | if (!any_checks_passed)\r |
| 988 | goto no_checks;\r |
| 989 | rstrip(p);\r |
| 990 | \r |
| 991 | type = strtoul(p, &r, 0);\r |
| 992 | if (r == p || type < 0)\r |
| 993 | goto bad;\r |
| 994 | SRam.eeprom_type = type;\r |
| 995 | SRam.flags |= SRF_EEPROM;\r |
| 996 | continue;\r |
| 997 | }\r |
| 998 | else if (is_expr("eeprom_lines", &p)) {\r |
| 999 | int scl, sda_in, sda_out;\r |
| 1000 | if (!any_checks_passed)\r |
| 1001 | goto no_checks;\r |
| 1002 | rstrip(p);\r |
| 1003 | \r |
| 1004 | if (!parse_3_vals(p, &scl, &sda_in, &sda_out))\r |
| 1005 | goto bad;\r |
| 1006 | if (scl < 0 || scl > 15 || sda_in < 0 || sda_in > 15 ||\r |
| 1007 | sda_out < 0 || sda_out > 15)\r |
| 1008 | goto bad;\r |
| 1009 | \r |
| 1010 | SRam.eeprom_bit_cl = scl;\r |
| 1011 | SRam.eeprom_bit_in = sda_in;\r |
| 1012 | SRam.eeprom_bit_out= sda_out;\r |
| 1013 | continue;\r |
| 1014 | }\r |
| 1015 | else if ((tmp = is_expr("prot_ro_value16", &p)) || is_expr("prot_rw_value16", &p)) {\r |
| 1016 | int addr, mask, val;\r |
| 1017 | if (!any_checks_passed)\r |
| 1018 | goto no_checks;\r |
| 1019 | rstrip(p);\r |
| 1020 | \r |
| 1021 | if (!parse_3_vals(p, &addr, &mask, &val))\r |
| 1022 | goto bad;\r |
| 1023 | \r |
| 1024 | carthw_sprot_new_location(addr, mask, val, tmp ? 1 : 0);\r |
| 1025 | continue;\r |
| 1026 | }\r |
| 1027 | \r |
| 1028 | \r |
| 1029 | bad:\r |
| 1030 | elprintf(EL_STATUS, "carthw:%d: unrecognized expression: %s", line, buff);\r |
| 1031 | bad_nomsg:\r |
| 1032 | skip_sect = 1;\r |
| 1033 | continue;\r |
| 1034 | \r |
| 1035 | no_checks:\r |
| 1036 | elprintf(EL_STATUS, "carthw:%d: command without any checks before it: %s", line, buff);\r |
| 1037 | skip_sect = 1;\r |
| 1038 | continue;\r |
| 1039 | }\r |
| 1040 | \r |
| 1041 | if (f != NULL)\r |
| 1042 | fclose(f);\r |
| 1043 | }\r |
| 1044 | \r |
| 1045 | /*\r |
| 1046 | * various cart-specific things, which can't be handled by generic code\r |
| 1047 | */\r |
| 1048 | static void PicoCartDetect(const char *carthw_cfg)\r |
| 1049 | {\r |
| 1050 | int fill_sram = 0;\r |
| 1051 | \r |
| 1052 | memset(&SRam, 0, sizeof(SRam));\r |
| 1053 | if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')\r |
| 1054 | {\r |
| 1055 | SRam.start = rom_read32(0x1B4) & ~0xff000001; // align\r |
| 1056 | SRam.end = (rom_read32(0x1B8) & ~0xff000000) | 1;\r |
| 1057 | if (Pico.rom[0x1B2] & 0x40)\r |
| 1058 | // EEPROM\r |
| 1059 | SRam.flags |= SRF_EEPROM;\r |
| 1060 | SRam.flags |= SRF_ENABLED;\r |
| 1061 | }\r |
| 1062 | if (SRam.end == 0 || SRam.start > SRam.end)\r |
| 1063 | {\r |
| 1064 | // some games may have bad headers, like S&K and Sonic3\r |
| 1065 | // note: majority games use 0x200000 as starting address, but there are some which\r |
| 1066 | // use something else (0x300000 by HardBall '95). Luckily they have good headers.\r |
| 1067 | SRam.start = 0x200000;\r |
| 1068 | SRam.end = 0x203FFF;\r |
| 1069 | SRam.flags |= SRF_ENABLED;\r |
| 1070 | }\r |
| 1071 | \r |
| 1072 | // set EEPROM defaults, in case it gets detected\r |
| 1073 | SRam.eeprom_type = 0; // 7bit (24C01)\r |
| 1074 | SRam.eeprom_bit_cl = 1;\r |
| 1075 | SRam.eeprom_bit_in = 0;\r |
| 1076 | SRam.eeprom_bit_out= 0;\r |
| 1077 | \r |
| 1078 | if (carthw_cfg != NULL)\r |
| 1079 | parse_carthw(carthw_cfg, &fill_sram);\r |
| 1080 | \r |
| 1081 | if (SRam.flags & SRF_ENABLED)\r |
| 1082 | {\r |
| 1083 | if (SRam.flags & SRF_EEPROM)\r |
| 1084 | SRam.size = 0x2000;\r |
| 1085 | else\r |
| 1086 | SRam.size = SRam.end - SRam.start + 1;\r |
| 1087 | \r |
| 1088 | SRam.data = calloc(SRam.size, 1);\r |
| 1089 | if (SRam.data == NULL)\r |
| 1090 | SRam.flags &= ~SRF_ENABLED;\r |
| 1091 | \r |
| 1092 | if (SRam.eeprom_type == 1) // 1 == 0 in PD EEPROM code\r |
| 1093 | SRam.eeprom_type = 0;\r |
| 1094 | }\r |
| 1095 | \r |
| 1096 | if ((SRam.flags & SRF_ENABLED) && fill_sram)\r |
| 1097 | {\r |
| 1098 | elprintf(EL_STATUS, "SRAM fill");\r |
| 1099 | memset(SRam.data, 0xff, SRam.size);\r |
| 1100 | }\r |
| 1101 | \r |
| 1102 | // Unusual region 'code'\r |
| 1103 | if (rom_strcmp(0x1f0, "EUROPE") == 0 || rom_strcmp(0x1f0, "Europe") == 0)\r |
| 1104 | *(int *) (Pico.rom + 0x1f0) = 0x20204520;\r |
| 1105 | }\r |
| 1106 | \r |
| 1107 | // vim:shiftwidth=2:expandtab\r |