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some fixes
[picodrive.git] / Pico / Cart.c
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cc68a136 1// This is part of Pico Library\r
2\r
3// (c) Copyright 2004 Dave, All rights reserved.\r
6cadc2da 4// (c) Copyright 2006-2007, Grazvydas "notaz" Ignotas\r
cc68a136 5// Free for non-commercial use.\r
6\r
7// For commercial use, separate licencing terms must be obtained.\r
8\r
9\r
10#include "PicoInt.h"\r
83bd0b76 11#include "../zlib/zlib.h"\r
12#include "../unzip/unzip.h"\r
13#include "../unzip/unzip_stream.h"\r
14\r
7336a99a 15\r
83bd0b76 16static char *rom_exts[] = { "bin", "gen", "smd", "iso" };\r
17\r
e807ac75 18void (*PicoCartUnloadHook)(void) = NULL;\r
19\r
a9b3ffd3 20void (*PicoCartLoadProgressCB)(int percent) = NULL;\r
4b167c12 21void (*PicoCDLoadProgressCB)(int percent) = NULL; // handled in Pico/cd/cd_file.c\r
a9b3ffd3 22\r
d6114368 23static void PicoCartDetect(void);\r
24\r
71de3cd9 25/* cso struct */\r
26typedef struct _cso_struct\r
27{\r
28 unsigned char in_buff[2*2048];\r
29 unsigned char out_buff[2048];\r
30 struct {\r
31 char magic[4];\r
32 unsigned int unused;\r
33 unsigned int total_bytes;\r
34 unsigned int total_bytes_high; // ignored here\r
35 unsigned int block_size; // 10h\r
36 unsigned char ver;\r
37 unsigned char align;\r
38 unsigned char reserved[2];\r
39 } header;\r
40 unsigned int fpos_in; // input file read pointer\r
41 unsigned int fpos_out; // pos in virtual decompressed file\r
42 int block_in_buff; // block which we have read in in_buff\r
43 int pad;\r
44 int index[0];\r
45}\r
46cso_struct;\r
47\r
48static int uncompress2(void *dest, int destLen, void *source, int sourceLen)\r
49{\r
50 z_stream stream;\r
51 int err;\r
52\r
53 stream.next_in = (Bytef*)source;\r
54 stream.avail_in = (uInt)sourceLen;\r
55 stream.next_out = dest;\r
56 stream.avail_out = (uInt)destLen;\r
57\r
58 stream.zalloc = NULL;\r
59 stream.zfree = NULL;\r
60\r
61 err = inflateInit2(&stream, -15);\r
62 if (err != Z_OK) return err;\r
63\r
64 err = inflate(&stream, Z_FINISH);\r
65 if (err != Z_STREAM_END) {\r
66 inflateEnd(&stream);\r
67 return err;\r
68 }\r
69 //*destLen = stream.total_out;\r
70\r
71 return inflateEnd(&stream);\r
72}\r
83bd0b76 73\r
74pm_file *pm_open(const char *path)\r
75{\r
76 pm_file *file = NULL;\r
77 const char *ext;\r
78 FILE *f;\r
79\r
80 if (path == NULL) return NULL;\r
81\r
82 if (strlen(path) < 5) ext = NULL; // no ext\r
83 else ext = path + strlen(path) - 3;\r
84\r
85 if (ext && strcasecmp(ext, "zip") == 0)\r
86 {\r
87 struct zipent *zipentry;\r
88 gzFile gzf = NULL;\r
89 ZIP *zipfile;\r
90 int i;\r
91\r
92 zipfile = openzip(path);\r
93\r
94 if (zipfile != NULL)\r
95 {\r
96 /* search for suitable file (right extension or large enough file) */\r
97 while ((zipentry = readzip(zipfile)) != NULL)\r
98 {\r
99 if (zipentry->uncompressed_size >= 128*1024) goto found_rom_zip;\r
100 if (strlen(zipentry->name) < 5) continue;\r
101\r
102 ext = zipentry->name+strlen(zipentry->name)-3;\r
103 for (i = 0; i < sizeof(rom_exts)/sizeof(rom_exts[0]); i++)\r
d0ae0cb4 104 if (strcasecmp(ext, rom_exts[i]) == 0) goto found_rom_zip;\r
83bd0b76 105 }\r
106\r
107 /* zipfile given, but nothing found suitable for us inside */\r
108 goto zip_failed;\r
109\r
110found_rom_zip:\r
111 /* try to convert to gzip stream, so we could use standard gzio functions from zlib */\r
112 gzf = zip2gz(zipfile, zipentry);\r
113 if (gzf == NULL) goto zip_failed;\r
114\r
115 file = malloc(sizeof(*file));\r
116 if (file == NULL) goto zip_failed;\r
117 file->file = zipfile;\r
118 file->param = gzf;\r
119 file->size = zipentry->uncompressed_size;\r
120 file->type = PMT_ZIP;\r
121 return file;\r
122\r
123zip_failed:\r
124 if (gzf) {\r
125 gzclose(gzf);\r
126 zipfile->fp = NULL; // gzclose() closed it\r
127 }\r
128 closezip(zipfile);\r
129 return NULL;\r
130 }\r
131 }\r
71de3cd9 132 else if (ext && strcasecmp(ext, "cso") == 0)\r
133 {\r
134 cso_struct *cso = NULL, *tmp = NULL;\r
135 int size;\r
136 f = fopen(path, "rb");\r
137 if (f == NULL)\r
138 goto cso_failed;\r
139\r
140 cso = malloc(sizeof(*cso));\r
141 if (cso == NULL)\r
142 goto cso_failed;\r
143\r
144 if (fread(&cso->header, 1, sizeof(cso->header), f) != sizeof(cso->header))\r
145 goto cso_failed;\r
146\r
147 if (strncmp(cso->header.magic, "CISO", 4) != 0) {\r
148 elprintf(EL_STATUS, "cso: bad header");\r
149 goto cso_failed;\r
150 }\r
151\r
152 if (cso->header.block_size != 2048) {\r
153 elprintf(EL_STATUS, "cso: bad block size (%u)", cso->header.block_size);\r
154 goto cso_failed;\r
155 }\r
156\r
157 size = ((cso->header.total_bytes >> 11) + 1)*4 + sizeof(*cso);\r
158 tmp = realloc(cso, size);\r
159 if (tmp == NULL)\r
160 goto cso_failed;\r
161 cso = tmp;\r
162 elprintf(EL_STATUS, "allocated %i bytes for CSO struct", size);\r
163\r
164 size -= sizeof(*cso); // index size\r
165 if (fread(cso->index, 1, size, f) != size) {\r
166 elprintf(EL_STATUS, "cso: premature EOF");\r
167 goto cso_failed;\r
168 }\r
169\r
170 // all ok\r
171 cso->fpos_in = ftell(f);\r
172 cso->fpos_out = 0;\r
173 cso->block_in_buff = -1;\r
174 file = malloc(sizeof(*file));\r
175 if (file == NULL) goto cso_failed;\r
176 file->file = f;\r
177 file->param = cso;\r
178 file->size = cso->header.total_bytes;\r
179 file->type = PMT_CSO;\r
180 return file;\r
181\r
182cso_failed:\r
183 if (cso != NULL) free(cso);\r
184 if (f != NULL) fclose(f);\r
185 return NULL;\r
186 }\r
83bd0b76 187\r
188 /* not a zip, treat as uncompressed file */\r
189 f = fopen(path, "rb");\r
190 if (f == NULL) return NULL;\r
191\r
7336a99a 192 /* we use our own buffering */\r
193 setvbuf(f, NULL, _IONBF, 0);\r
194\r
83bd0b76 195 file = malloc(sizeof(*file));\r
196 if (file == NULL) {\r
197 fclose(f);\r
198 return NULL;\r
199 }\r
200 fseek(f, 0, SEEK_END);\r
201 file->file = f;\r
202 file->param = NULL;\r
203 file->size = ftell(f);\r
204 file->type = PMT_UNCOMPRESSED;\r
205 fseek(f, 0, SEEK_SET);\r
d6114368 206\r
83bd0b76 207 return file;\r
208}\r
209\r
210size_t pm_read(void *ptr, size_t bytes, pm_file *stream)\r
211{\r
212 int ret;\r
213\r
214 if (stream->type == PMT_UNCOMPRESSED)\r
215 {\r
216 ret = fread(ptr, 1, bytes, stream->file);\r
217 }\r
218 else if (stream->type == PMT_ZIP)\r
219 {\r
220 gzFile gf = stream->param;\r
221 int err;\r
222 ret = gzread(gf, ptr, bytes);\r
223 err = gzerror2(gf);\r
224 if (ret > 0 && (err == Z_DATA_ERROR || err == Z_STREAM_END))\r
225 /* we must reset stream pointer or else next seek/read fails */\r
226 gzrewind(gf);\r
227 }\r
71de3cd9 228 else if (stream->type == PMT_CSO)\r
229 {\r
230 cso_struct *cso = stream->param;\r
231 int read_pos, read_len, out_offs, rret;\r
232 int block = cso->fpos_out >> 11;\r
233 int index = cso->index[block];\r
234 int index_end = cso->index[block+1];\r
235 unsigned char *out = ptr, *tmp_dst;\r
236\r
237 ret = 0;\r
238 while (bytes != 0)\r
239 {\r
240 out_offs = cso->fpos_out&0x7ff;\r
241 if (out_offs == 0 && bytes >= 2048)\r
242 tmp_dst = out;\r
243 else tmp_dst = cso->out_buff;\r
244\r
245 read_pos = (index&0x7fffffff) << cso->header.align;\r
246\r
247 if (index < 0) {\r
248 if (read_pos != cso->fpos_in)\r
249 fseek(stream->file, read_pos, SEEK_SET);\r
250 rret = fread(tmp_dst, 1, 2048, stream->file);\r
251 cso->fpos_in = read_pos + rret;\r
252 if (rret != 2048) break;\r
253 } else {\r
254 read_len = (((index_end&0x7fffffff) << cso->header.align) - read_pos) & 0xfff;\r
255 if (block != cso->block_in_buff)\r
256 {\r
257 if (read_pos != cso->fpos_in)\r
ff6b7429 258 fseek(stream->file, read_pos, SEEK_SET);\r
71de3cd9 259 rret = fread(cso->in_buff, 1, read_len, stream->file);\r
260 cso->fpos_in = read_pos + rret;\r
261 if (rret != read_len) {\r
262 elprintf(EL_STATUS, "cso: read failed @ %08x", read_pos);\r
263 break;\r
264 }\r
265 cso->block_in_buff = block;\r
266 }\r
267 rret = uncompress2(tmp_dst, 2048, cso->in_buff, read_len);\r
268 if (rret != 0) {\r
269 elprintf(EL_STATUS, "cso: uncompress failed @ %08x with %i", read_pos, rret);\r
270 break;\r
271 }\r
272 }\r
273\r
274 rret = 2048;\r
275 if (out_offs != 0 || bytes < 2048) {\r
276 //elprintf(EL_STATUS, "cso: unaligned/nonfull @ %08x, offs=%i, len=%u", cso->fpos_out, out_offs, bytes);\r
277 if (bytes < rret) rret = bytes;\r
278 if (2048 - out_offs < rret) rret = 2048 - out_offs;\r
279 memcpy(out, tmp_dst + out_offs, rret);\r
280 }\r
281 ret += rret;\r
282 out += rret;\r
283 cso->fpos_out += rret;\r
284 bytes -= rret;\r
285 block++;\r
286 index = index_end;\r
287 index_end = cso->index[block+1];\r
288 }\r
289 }\r
83bd0b76 290 else\r
291 ret = 0;\r
292\r
293 return ret;\r
294}\r
295\r
296int pm_seek(pm_file *stream, long offset, int whence)\r
297{\r
298 if (stream->type == PMT_UNCOMPRESSED)\r
299 {\r
7336a99a 300 fseek(stream->file, offset, whence);\r
301 return ftell(stream->file);\r
83bd0b76 302 }\r
303 else if (stream->type == PMT_ZIP)\r
304 {\r
66fdc0f0 305 if (PicoMessage != NULL && offset > 6*1024*1024) {\r
306 long pos = gztell((gzFile) stream->param);\r
307 if (offset < pos || offset - pos > 6*1024*1024)\r
308 PicoMessage("Decompressing data...");\r
309 }\r
83bd0b76 310 return gzseek((gzFile) stream->param, offset, whence);\r
311 }\r
71de3cd9 312 else if (stream->type == PMT_CSO)\r
313 {\r
314 cso_struct *cso = stream->param;\r
315 switch (whence)\r
316 {\r
317 case SEEK_CUR: cso->fpos_out += offset; break;\r
318 case SEEK_SET: cso->fpos_out = offset; break;\r
319 case SEEK_END: cso->fpos_out = cso->header.total_bytes - offset; break;\r
320 }\r
321 return cso->fpos_out;\r
322 }\r
83bd0b76 323 else\r
324 return -1;\r
325}\r
326\r
327int pm_close(pm_file *fp)\r
328{\r
329 int ret = 0;\r
330\r
331 if (fp == NULL) return EOF;\r
332\r
333 if (fp->type == PMT_UNCOMPRESSED)\r
334 {\r
335 fclose(fp->file);\r
336 }\r
337 else if (fp->type == PMT_ZIP)\r
338 {\r
339 ZIP *zipfile = fp->file;\r
340 gzclose((gzFile) fp->param);\r
341 zipfile->fp = NULL; // gzclose() closed it\r
342 closezip(zipfile);\r
343 }\r
71de3cd9 344 else if (fp->type == PMT_CSO)\r
345 {\r
346 free(fp->param);\r
347 fclose(fp->file);\r
348 }\r
83bd0b76 349 else\r
350 ret = EOF;\r
351\r
352 free(fp);\r
353 return ret;\r
354}\r
355\r
cc68a136 356\r
357void Byteswap(unsigned char *data,int len)\r
358{\r
359 int i=0;\r
360\r
361 if (len<2) return; // Too short\r
362\r
363 do\r
364 {\r
365 unsigned short *pd=(unsigned short *)(data+i);\r
366 int value=*pd; // Get 2 bytes\r
367\r
368 value=(value<<8)|(value>>8); // Byteswap it\r
369 *pd=(unsigned short)value; // Put 2b ytes\r
370 i+=2;\r
371 }\r
372 while (i+2<=len);\r
373}\r
374\r
375// Interleve a 16k block and byteswap\r
376static int InterleveBlock(unsigned char *dest,unsigned char *src)\r
377{\r
378 int i=0;\r
379 for (i=0;i<0x2000;i++) dest[(i<<1) ]=src[ i]; // Odd\r
380 for (i=0;i<0x2000;i++) dest[(i<<1)+1]=src[0x2000+i]; // Even\r
381 return 0;\r
382}\r
383\r
384// Decode a SMD file\r
385static int DecodeSmd(unsigned char *data,int len)\r
386{\r
387 unsigned char *temp=NULL;\r
388 int i=0;\r
389\r
390 temp=(unsigned char *)malloc(0x4000);\r
391 if (temp==NULL) return 1;\r
392 memset(temp,0,0x4000);\r
393\r
394 // Interleve each 16k block and shift down by 0x200:\r
395 for (i=0; i+0x4200<=len; i+=0x4000)\r
396 {\r
397 InterleveBlock(temp,data+0x200+i); // Interleve 16k to temporary buffer\r
398 memcpy(data+i,temp,0x4000); // Copy back in\r
399 }\r
400\r
401 free(temp);\r
402 return 0;\r
403}\r
404\r
bf098bc5 405static unsigned char *cd_realloc(void *old, int filesize)\r
406{\r
407 unsigned char *rom;\r
bf098bc5 408 rom=realloc(old, sizeof(mcd_state));\r
409 if (rom) memset(rom+0x20000, 0, sizeof(mcd_state)-0x20000);\r
410 return rom;\r
411}\r
412\r
cc68a136 413static unsigned char *PicoCartAlloc(int filesize)\r
414{\r
415 int alloc_size;\r
416 unsigned char *rom;\r
417\r
bf098bc5 418 if (PicoMCD & 1) return cd_realloc(NULL, filesize);\r
cc68a136 419\r
420 alloc_size=filesize+0x7ffff;\r
421 if((filesize&0x3fff)==0x200) alloc_size-=0x200;\r
422 alloc_size&=~0x7ffff; // use alloc size of multiples of 512K, so that memhandlers could be set up more efficiently\r
423 if((filesize&0x3fff)==0x200) alloc_size+=0x200;\r
424 else if(alloc_size-filesize < 4) alloc_size+=4; // padding for out-of-bound exec protection\r
cc68a136 425\r
426 // Allocate space for the rom plus padding\r
427 rom=(unsigned char *)malloc(alloc_size);\r
428 if(rom) memset(rom+alloc_size-0x80000,0,0x80000);\r
429 return rom;\r
430}\r
431\r
83bd0b76 432int PicoCartLoad(pm_file *f,unsigned char **prom,unsigned int *psize)\r
cc68a136 433{\r
a9b3ffd3 434 unsigned char *rom=NULL; int size, bytes_read;\r
cc68a136 435 if (f==NULL) return 1;\r
436\r
83bd0b76 437 size=f->size;\r
cc68a136 438 if (size <= 0) return 1;\r
bf098bc5 439 size=(size+3)&~3; // Round up to a multiple of 4\r
cc68a136 440\r
441 // Allocate space for the rom plus padding\r
442 rom=PicoCartAlloc(size);\r
7336a99a 443 if (rom==NULL) {\r
c6196c0f 444 elprintf(EL_STATUS, "out of memory (wanted %i)", size);\r
7336a99a 445 return 1;\r
446 }\r
cc68a136 447\r
a9b3ffd3 448 if (PicoCartLoadProgressCB != NULL)\r
449 {\r
450 // read ROM in blocks, just for fun\r
451 int ret;\r
452 unsigned char *p = rom;\r
453 bytes_read=0;\r
454 do\r
455 {\r
456 int todo = size - bytes_read;\r
457 if (todo > 256*1024) todo = 256*1024;\r
458 ret = pm_read(p,todo,f);\r
459 bytes_read += ret;\r
460 p += ret;\r
461 PicoCartLoadProgressCB(bytes_read * 100 / size);\r
462 }\r
463 while (ret > 0);\r
464 }\r
465 else\r
466 bytes_read = pm_read(rom,size,f); // Load up the rom\r
467 if (bytes_read <= 0) {\r
c6196c0f 468 elprintf(EL_STATUS, "read failed");\r
a9b3ffd3 469 free(rom);\r
470 return 1;\r
471 }\r
bf098bc5 472\r
473 // maybe we are loading MegaCD BIOS?\r
474 if (!(PicoMCD&1) && size == 0x20000 && (!strncmp((char *)rom+0x124, "BOOT", 4) || !strncmp((char *)rom+0x128, "BOOT", 4))) {\r
475 PicoMCD |= 1;\r
476 rom = cd_realloc(rom, size);\r
477 }\r
cc68a136 478\r
479 // Check for SMD:\r
480 if ((size&0x3fff)==0x200) { DecodeSmd(rom,size); size-=0x200; } // Decode and byteswap SMD\r
481 else Byteswap(rom,size); // Just byteswap\r
482\r
483 if (prom) *prom=rom;\r
484 if (psize) *psize=size;\r
485\r
486 return 0;\r
487}\r
488\r
f8ef8ff7 489// Insert a cartridge:\r
cc68a136 490int PicoCartInsert(unsigned char *rom,unsigned int romsize)\r
491{\r
492 // notaz: add a 68k "jump one op back" opcode to the end of ROM.\r
493 // This will hang the emu, but will prevent nasty crashes.\r
494 // note: 4 bytes are padded to every ROM\r
d6114368 495 if (rom != NULL)\r
cc68a136 496 *(unsigned long *)(rom+romsize) = 0xFFFE4EFA; // 4EFA FFFE byteswapped\r
497\r
cc68a136 498 Pico.rom=rom;\r
499 Pico.romsize=romsize;\r
500\r
d6114368 501 if (SRam.data) {\r
502 free(SRam.data);\r
503 SRam.data = NULL;\r
504 }\r
505\r
e807ac75 506 if (PicoCartUnloadHook != NULL) {\r
507 PicoCartUnloadHook();\r
508 PicoCartUnloadHook = NULL;\r
509 }\r
510\r
f8ef8ff7 511 PicoMemResetHooks();\r
512 PicoDmaHook = NULL;\r
513 PicoResetHook = NULL;\r
017512f2 514 PicoLineHook = NULL;\r
fad24893 515 PicoLoadStateHook = NULL;\r
945c2fdc 516 carthw_chunks = NULL;\r
f8ef8ff7 517\r
0ffefdb8 518 PicoMemReset();\r
519\r
f8ef8ff7 520 if (!(PicoMCD & 1))\r
521 PicoCartDetect();\r
522\r
1dceadae 523 // setup correct memory map for loaded ROM\r
0ffefdb8 524 // call PicoMemReset again due to possible memmap change\r
1dceadae 525 if (PicoMCD & 1)\r
526 PicoMemSetupCD();\r
527 else PicoMemSetup();\r
528 PicoMemReset();\r
529\r
cc68a136 530 return PicoReset(1);\r
531}\r
532\r
a12b1b29 533int PicoCartUnload(void)\r
cc68a136 534{\r
a12b1b29 535 if (Pico.rom != NULL) {\r
536 free(Pico.rom);\r
537 Pico.rom=NULL;\r
538 }\r
cc68a136 539 return 0;\r
540}\r
541\r
1f4e9f14 542static int rom_strcmp(int rom_offset, const char *s1)\r
1dceadae 543{\r
1f4e9f14 544 int i, len = strlen(s1);\r
545 const char *s_rom = (const char *)Pico.rom + rom_offset;\r
1dceadae 546 for (i = 0; i < len; i++)\r
1f4e9f14 547 if (s1[i] != s_rom[i^1])\r
1dceadae 548 return 1;\r
549 return 0;\r
550}\r
551\r
1f4e9f14 552static int name_cmp(const char *name)\r
553{\r
554 return rom_strcmp(0x150, name);\r
555}\r
556\r
a12b1b29 557/*\r
558 * various cart-specific things, which can't be handled by generic code\r
559 * (maybe I should start using CRC for this stuff?)\r
560 */\r
d6114368 561static void PicoCartDetect(void)\r
1dceadae 562{\r
563 int sram_size = 0, csum;\r
1dceadae 564 Pico.m.sram_reg = 0;\r
565\r
566 csum = PicoRead32(0x18c) & 0xffff;\r
567\r
568 if (Pico.rom[0x1B1] == 'R' && Pico.rom[0x1B0] == 'A')\r
569 {\r
570 if (Pico.rom[0x1B2] & 0x40)\r
571 {\r
572 // EEPROM\r
573 SRam.start = PicoRead32(0x1B4) & ~1; // zero address is used for clock by some games\r
574 SRam.end = PicoRead32(0x1B8);\r
575 sram_size = 0x2000;\r
576 Pico.m.sram_reg |= 4;\r
577 } else {\r
578 // normal SRAM\r
53668ca0 579 SRam.start = PicoRead32(0x1B4) & ~0xff;\r
1dceadae 580 SRam.end = PicoRead32(0x1B8) | 1;\r
581 sram_size = SRam.end - SRam.start + 1;\r
582 }\r
53668ca0 583 SRam.start &= ~0xff000000;\r
584 SRam.end &= ~0xff000000;\r
1dceadae 585 Pico.m.sram_reg |= 0x10; // SRAM was detected\r
586 }\r
587 if (sram_size <= 0)\r
588 {\r
589 // some games may have bad headers, like S&K and Sonic3\r
590 // note: majority games use 0x200000 as starting address, but there are some which\r
591 // use something else (0x300000 by HardBall '95). Luckily they have good headers.\r
592 SRam.start = 0x200000;\r
593 SRam.end = 0x203FFF;\r
594 sram_size = 0x004000;\r
595 }\r
596\r
597 if (sram_size)\r
598 {\r
599 SRam.data = (unsigned char *) calloc(sram_size, 1);\r
d6114368 600 if (SRam.data == NULL) return;\r
1dceadae 601 }\r
602 SRam.changed = 0;\r
603\r
604 // set EEPROM defaults, in case it gets detected\r
605 SRam.eeprom_type = 0; // 7bit (24C01)\r
606 SRam.eeprom_abits = 3; // eeprom access must be odd addr for: bit0 ~ cl, bit1 ~ in\r
607 SRam.eeprom_bit_cl = 1;\r
608 SRam.eeprom_bit_in = 0;\r
609 SRam.eeprom_bit_out= 0;\r
610\r
611 // some known EEPROM data (thanks to EkeEke)\r
612 if (name_cmp("COLLEGE SLAM") == 0 ||\r
613 name_cmp("FRANK THOMAS BIGHURT BASEBAL") == 0)\r
614 {\r
615 SRam.eeprom_type = 3;\r
616 SRam.eeprom_abits = 2;\r
617 SRam.eeprom_bit_cl = 0;\r
618 }\r
619 else if (name_cmp("NBA JAM TOURNAMENT EDITION") == 0 ||\r
620 name_cmp("NFL QUARTERBACK CLUB") == 0)\r
621 {\r
622 SRam.eeprom_type = 2;\r
623 SRam.eeprom_abits = 2;\r
624 SRam.eeprom_bit_cl = 0;\r
625 }\r
626 else if (name_cmp("NBA JAM") == 0)\r
627 {\r
628 SRam.eeprom_type = 2;\r
629 SRam.eeprom_bit_out = 1;\r
630 SRam.eeprom_abits = 0;\r
631 }\r
632 else if (name_cmp("NHLPA HOCKEY '93") == 0 ||\r
633 name_cmp("NHLPA Hockey '93") == 0 ||\r
634 name_cmp("RINGS OF POWER") == 0)\r
635 {\r
636 SRam.start = SRam.end = 0x200000;\r
637 Pico.m.sram_reg = 0x14;\r
638 SRam.eeprom_abits = 0;\r
639 SRam.eeprom_bit_cl = 6;\r
640 SRam.eeprom_bit_in = 7;\r
641 SRam.eeprom_bit_out= 7;\r
642 }\r
643 else if ( name_cmp("MICRO MACHINES II") == 0 ||\r
644 (name_cmp(" ") == 0 && // Micro Machines {Turbo Tournament '96, Military - It's a Blast!}\r
71de3cd9 645 (csum == 0x165e || csum == 0x168b || csum == 0xCEE0 || csum == 0x2C41)))\r
1dceadae 646 {\r
647 SRam.start = 0x300000;\r
648 SRam.end = 0x380001;\r
649 Pico.m.sram_reg = 0x14;\r
650 SRam.eeprom_type = 2;\r
651 SRam.eeprom_abits = 0;\r
652 SRam.eeprom_bit_cl = 1;\r
653 SRam.eeprom_bit_in = 0;\r
654 SRam.eeprom_bit_out= 7;\r
655 }\r
656\r
757f8dae 657 // SVP detection\r
658 else if (name_cmp("Virtua Racing") == 0 ||\r
659 name_cmp("VIRTUA RACING") == 0)\r
660 {\r
661 PicoSVPStartup();\r
662 }\r
663\r
a12b1b29 664 // Detect 12-in-1 mapper\r
1ca2ea4f 665 else if ((name_cmp("ROBOCOP 3") == 0 && Pico.romsize == 0x200000) ||\r
666 (rom_strcmp(0x160, "FLICKY") == 0 && Pico.romsize >= 0x200000))\r
757f8dae 667 {\r
668 carthw_12in1_startup();\r
669 }\r
670\r
a12b1b29 671 // Realtec mapper\r
672 else if (Pico.romsize == 512*1024 && (\r
1ca2ea4f 673 rom_strcmp(0x94, "THE EARTH DEFEND") == 0 ||\r
674 rom_strcmp(0xfe, "WISEGAME 11-03-1993") == 0 || // Funny World\r
675 rom_strcmp(0x95, "MALLET LEGEND ") == 0)) // Whac-A-Critter\r
a12b1b29 676 {\r
677 carthw_realtec_startup();\r
678 }\r
679\r
1dceadae 680 // Some games malfunction if SRAM is not filled with 0xff\r
681 if (name_cmp("DINO DINI'S SOCCER") == 0 ||\r
682 name_cmp("MICRO MACHINES II") == 0)\r
757f8dae 683 {\r
1dceadae 684 memset(SRam.data, 0xff, sram_size);\r
757f8dae 685 }\r
1f4e9f14 686\r
687 // Unusual region 'code'\r
688 if (rom_strcmp(0x1f0, "EUROPE") == 0)\r
689 *(int *) (Pico.rom+0x1f0) = 0x20204520;\r
1dceadae 690}\r
691\r
fast MegaDrive/MegaCD/32X emulator