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