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