memmap.c 107 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
/***********************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.

  (c) Copyright 1996 - 2002  Gary Henderson (gary.henderson@ntlworld.com),
                             Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2004  Matthew Kendora

  (c) Copyright 2002 - 2005  Peter Bortas (peter@bortas.org)

  (c) Copyright 2004 - 2005  Joel Yliluoma (http://iki.fi/bisqwit/)

  (c) Copyright 2001 - 2006  John Weidman (jweidman@slip.net)

  (c) Copyright 2002 - 2006  funkyass (funkyass@spam.shaw.ca),
                             Kris Bleakley (codeviolation@hotmail.com)

  (c) Copyright 2002 - 2010  Brad Jorsch (anomie@users.sourceforge.net),
                             Nach (n-a-c-h@users.sourceforge.net),
                             zones (kasumitokoduck@yahoo.com)

  (c) Copyright 2006 - 2007  nitsuja

  (c) Copyright 2009 - 2010  BearOso,
                             OV2


  BS-X C emulator code
  (c) Copyright 2005 - 2006  Dreamer Nom,
                             zones

  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003  _Demo_ (_demo_@zsnes.com),
                             Nach,
                             zsKnight (zsknight@zsnes.com)

  C4 C++ code
  (c) Copyright 2003 - 2006  Brad Jorsch,
                             Nach

  DSP-1 emulator code
  (c) Copyright 1998 - 2006  _Demo_,
                             Andreas Naive (andreasnaive@gmail.com),
                             Gary Henderson,
                             Ivar (ivar@snes9x.com),
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora,
                             Nach,
                             neviksti (neviksti@hotmail.com)

  DSP-2 emulator code
  (c) Copyright 2003         John Weidman,
                             Kris Bleakley,
                             Lord Nightmare (lord_nightmare@users.sourceforge.net),
                             Matthew Kendora,
                             neviksti

  DSP-3 emulator code
  (c) Copyright 2003 - 2006  John Weidman,
                             Kris Bleakley,
                             Lancer,
                             z80 gaiden

  DSP-4 emulator code
  (c) Copyright 2004 - 2006  Dreamer Nom,
                             John Weidman,
                             Kris Bleakley,
                             Nach,
                             z80 gaiden

  OBC1 emulator code
  (c) Copyright 2001 - 2004  zsKnight,
                             pagefault (pagefault@zsnes.com),
                             Kris Bleakley
                             Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code used in 1.39-1.51
  (c) Copyright 2002         Matthew Kendora with research by
                             zsKnight,
                             John Weidman,
                             Dark Force

  SPC7110 and RTC C++ emulator code used in 1.52+
  (c) Copyright 2009         byuu,
                             neviksti

  S-DD1 C emulator code
  (c) Copyright 2003         Brad Jorsch with research by
                             Andreas Naive,
                             John Weidman

  S-RTC C emulator code
  (c) Copyright 2001 - 2006  byuu,
                             John Weidman

  ST010 C++ emulator code
  (c) Copyright 2003         Feather,
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora

  Super FX x86 assembler emulator code
  (c) Copyright 1998 - 2003  _Demo_,
                             pagefault,
                             zsKnight

  Super FX C emulator code
  (c) Copyright 1997 - 1999  Ivar,
                             Gary Henderson,
                             John Weidman

  Sound emulator code used in 1.5-1.51
  (c) Copyright 1998 - 2003  Brad Martin
  (c) Copyright 1998 - 2006  Charles Bilyue'

  Sound emulator code used in 1.52+
  (c) Copyright 2004 - 2007  Shay Green (gblargg@gmail.com)

  SH assembler code partly based on x86 assembler code
  (c) Copyright 2002 - 2004  Marcus Comstedt (marcus@mc.pp.se)

  2xSaI filter
  (c) Copyright 1999 - 2001  Derek Liauw Kie Fa

  HQ2x, HQ3x, HQ4x filters
  (c) Copyright 2003         Maxim Stepin (maxim@hiend3d.com)

  NTSC filter
  (c) Copyright 2006 - 2007  Shay Green

  GTK+ GUI code
  (c) Copyright 2004 - 2010  BearOso

  Win32 GUI code
  (c) Copyright 2003 - 2006  blip,
                             funkyass,
                             Matthew Kendora,
                             Nach,
                             nitsuja
  (c) Copyright 2009 - 2010  OV2

  Mac OS GUI code
  (c) Copyright 1998 - 2001  John Stiles
  (c) Copyright 2001 - 2010  zones


  Specific ports contains the works of other authors. See headers in
  individual files.


  Snes9x homepage: http://www.snes9x.com/

  Permission to use, copy, modify and/or distribute Snes9x in both binary
  and source form, for non-commercial purposes, is hereby granted without
  fee, providing that this license information and copyright notice appear
  with all copies and any derived work.

  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software or it's derivatives.

  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes,
  but is not limited to, charging money for Snes9x or software derived from
  Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
  using Snes9x as a promotion for your commercial product.

  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.

  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
 ***********************************************************************************/
176
#include <ctype.h>
177
178
#include <stdlib.h>
#include <string.h>
179
180
181

#include "snes9x.h"
#include "memmap.h"
TwinAphex51224's avatar
TwinAphex51224 committed
182
#include "getset.h"
183
#include "apu.h"
184
#include "fxinst.h"
185
186
187
188
189
190
#include "fxemu.h"
#include "sdd1.h"
#include "srtc.h"
#include "controls.h"
#include "cheats.h"
#include "display.h"
191
#include "spc7110dec.h"
192

Alcaro's avatar
Alcaro committed
193
#include "../libretro/libretro.h"
Alcaro's avatar
Alcaro committed
194
void S9xAppendMapping(struct retro_memory_descriptor *desc);
195

Alcaro's avatar
Alcaro committed
196
197
198
199
200
#define MAP_LIBRETRO_RAW(flags, ptr, offset, start, select, disconnect, len) \
	do { \
		struct retro_memory_descriptor desc={flags, ptr, offset, start, select, disconnect, len, NULL}; \
		S9xAppendMapping(&desc); \
	} while(0)
201

Alcaro's avatar
Alcaro committed
202
203
204
205
#define MAP_LIBRETRO(flags, ptr, offset, disconnect, len, bank_s,bank_e,addr_s,addr_e) \
	MAP_LIBRETRO_RAW(flags, ptr, offset, \
		(bank_s<<16 | addr_s), ((bank_s<<16 | addr_s) ^ (bank_e<<16 | addr_e) ^ 0xFFFFFF), \
		disconnect, len)
Alcaro's avatar
Alcaro committed
206

207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
#ifndef max
#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif

#ifndef min
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif

static const uint32	crc32Table[256] =
{
	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
	0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
	0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
	0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
	0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
	0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
	0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
	0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
	0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
	0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
	0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
	0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
	0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
	0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
	0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
	0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
	0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
	0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
	0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
	0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
	0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
	0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

262
/* deinterleave*/
263
264
265

static void S9xDeinterleaveType1 (int size, uint8 *base)
{
266
267
	uint8 *tmp;
	uint8	blocks[256], b;
268
	int nblocks;
269
	int	i, j;
270
271
	
	nblocks = size >> 16;
272

273
	for ( i = 0; i < nblocks; i++)
274
275
276
277
278
	{
		blocks[i * 2] = i + nblocks;
		blocks[i * 2 + 1] = i;
	}

279
	tmp = (uint8 *) malloc(0x8000);
280
281
	if (tmp)
	{
282
		for ( i = 0; i < nblocks * 2; i++)
283
		{
284
			for ( j = i; j < nblocks * 2; j++)
285
286
287
288
289
290
			{
				if (blocks[j] == i)
				{
					memmove(tmp, &base[blocks[j] * 0x8000], 0x8000);
					memmove(&base[blocks[j] * 0x8000], &base[blocks[i] * 0x8000], 0x8000);
					memmove(&base[blocks[i] * 0x8000], tmp, 0x8000);
291
					b = blocks[j];
292
293
294
295
296
297
298
299
300
301
302
303
304
					blocks[j] = blocks[i];
					blocks[i] = b;
					break;
				}
			}
		}

		free(tmp);
	}
}

static void S9xDeinterleaveType2 (int size, uint8 *base)
{
305
	/* for odd Super FX images */
306
307
	uint8 *tmp;
	uint8	blocks[256], b;
308
309
310
311
	int nblocks, step, i, j;

	nblocks = size >> 16;
	step = 64;
312
313
314
315
316

	while (nblocks <= step)
		step >>= 1;
	nblocks = step;

317
	for ( i = 0; i < nblocks * 2; i++)
318
319
		blocks[i] = (i & ~0xf) | ((i & 3) << 2) | ((i & 12) >> 2);

320
	tmp = (uint8 *) malloc(0x10000);
321
322
	if (tmp)
	{
323
		for ( i = 0; i < nblocks * 2; i++)
324
		{
325
			for ( j = i; j < nblocks * 2; j++)
326
327
328
329
330
331
			{
				if (blocks[j] == i)
				{
					memmove(tmp, &base[blocks[j] * 0x10000], 0x10000);
					memmove(&base[blocks[j] * 0x10000], &base[blocks[i] * 0x10000], 0x10000);
					memmove(&base[blocks[i] * 0x10000], tmp, 0x10000);
332
					b = blocks[j];
333
334
335
336
337
338
339
340
341
342
343
344
345
					blocks[j] = blocks[i];
					blocks[i] = b;
					break;
				}
			}
		}

		free(tmp);
	}
}

static void S9xDeinterleaveGD24 (int size, uint8 *base)
{
346
	uint8 *tmp;
347
	/* for 24Mbit images dumped with Game Doctor */
348
349
350
	if (size != 0x300000)
		return;

351
	tmp = (uint8 *) malloc(0x80000);
352
353
354
355
356
357
358
359
360
361
362
363
364
	if (tmp)
	{
		memmove(tmp, &base[0x180000], 0x80000);
		memmove(&base[0x180000], &base[0x200000], 0x80000);
		memmove(&base[0x200000], &base[0x280000], 0x80000);
		memmove(&base[0x280000], tmp, 0x80000);

		free(tmp);

		S9xDeinterleaveType1(size, base);
	}
}

365
/* allocation and deallocation */
366

TwinAphex51224's avatar
TwinAphex51224 committed
367
bool8 Init (void)
368
{
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
	Memory.RAM	 = (uint8 *) malloc(0x20000);
	Memory.SRAM = (uint8 *) malloc(0x20000);
	Memory.VRAM = (uint8 *) malloc(0x10000);
	Memory.ROM  = (uint8 *) malloc(MAX_ROM_SIZE + 0x200 + 0x8000);

	IPPU.TileCache[TILE_2BIT]       = (uint8 *) malloc(MAX_2BIT_TILES * 64);
	IPPU.TileCache[TILE_4BIT]       = (uint8 *) malloc(MAX_4BIT_TILES * 64);
	IPPU.TileCache[TILE_8BIT]       = (uint8 *) malloc(MAX_8BIT_TILES * 64);
	IPPU.TileCache[TILE_2BIT_EVEN]  = (uint8 *) malloc(MAX_2BIT_TILES * 64);
	IPPU.TileCache[TILE_2BIT_ODD]   = (uint8 *) malloc(MAX_2BIT_TILES * 64);
	IPPU.TileCache[TILE_4BIT_EVEN]  = (uint8 *) malloc(MAX_4BIT_TILES * 64);
	IPPU.TileCache[TILE_4BIT_ODD]   = (uint8 *) malloc(MAX_4BIT_TILES * 64);

	IPPU.TileCached[TILE_2BIT]      = (uint8 *) malloc(MAX_2BIT_TILES);
	IPPU.TileCached[TILE_4BIT]      = (uint8 *) malloc(MAX_4BIT_TILES);
	IPPU.TileCached[TILE_8BIT]      = (uint8 *) malloc(MAX_8BIT_TILES);
	IPPU.TileCached[TILE_2BIT_EVEN] = (uint8 *) malloc(MAX_2BIT_TILES);
	IPPU.TileCached[TILE_2BIT_ODD]  = (uint8 *) malloc(MAX_2BIT_TILES);
	IPPU.TileCached[TILE_4BIT_EVEN] = (uint8 *) malloc(MAX_4BIT_TILES);
	IPPU.TileCached[TILE_4BIT_ODD]  = (uint8 *) malloc(MAX_4BIT_TILES);
389

390

391
392
393
	/* don't render subscreen speed hack - disable this by default by 
	turning the variable (RenderSub - opposite of don't render sub) on */

394
395
	PPU.RenderSub = TRUE;
	PPU.FullClipping = TRUE;
396
	coldata_update_screen = TRUE;
397

TwinAphex51224's avatar
TwinAphex51224 committed
398
	if (!Memory.RAM || !Memory.SRAM || !Memory.VRAM || !Memory.ROM ||
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
			!IPPU.TileCache[TILE_2BIT]       ||
			!IPPU.TileCache[TILE_4BIT]       ||
			!IPPU.TileCache[TILE_8BIT]       ||
			!IPPU.TileCache[TILE_2BIT_EVEN]  ||
			!IPPU.TileCache[TILE_2BIT_ODD]   ||
			!IPPU.TileCache[TILE_4BIT_EVEN]  ||
			!IPPU.TileCache[TILE_4BIT_ODD]   ||
			!IPPU.TileCached[TILE_2BIT]      ||
			!IPPU.TileCached[TILE_4BIT]      ||
			!IPPU.TileCached[TILE_8BIT]      ||
			!IPPU.TileCached[TILE_2BIT_EVEN] ||
			!IPPU.TileCached[TILE_2BIT_ODD]  ||
			!IPPU.TileCached[TILE_4BIT_EVEN] ||
			!IPPU.TileCached[TILE_4BIT_ODD])
	{
414
415
		Deinit();
		return (FALSE);
416
	}
417

418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
	memset(Memory.RAM, 0,  0x20000);
	memset(Memory.SRAM, 0, 0x20000);
	memset(Memory.VRAM, 0, 0x10000);
	memset(Memory.ROM, 0,  MAX_ROM_SIZE + 0x200 + 0x8000);

	memset(IPPU.TileCache[TILE_2BIT], 0, MAX_2BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_4BIT], 0, MAX_4BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_8BIT], 0, MAX_8BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_2BIT_EVEN], 0,  MAX_2BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_2BIT_ODD], 0,   MAX_2BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_4BIT_EVEN], 0,  MAX_4BIT_TILES * 64);
	memset(IPPU.TileCache[TILE_4BIT_ODD], 0,   MAX_4BIT_TILES * 64);

	memset(IPPU.TileCached[TILE_2BIT], 0,      MAX_2BIT_TILES);
	memset(IPPU.TileCached[TILE_4BIT], 0,      MAX_4BIT_TILES);
	memset(IPPU.TileCached[TILE_8BIT], 0,      MAX_8BIT_TILES);
	memset(IPPU.TileCached[TILE_2BIT_EVEN], 0, MAX_2BIT_TILES);
	memset(IPPU.TileCached[TILE_2BIT_ODD], 0,  MAX_2BIT_TILES);
	memset(IPPU.TileCached[TILE_4BIT_EVEN], 0, MAX_4BIT_TILES);
	memset(IPPU.TileCached[TILE_4BIT_ODD], 0,  MAX_4BIT_TILES);
438

439
440
	/* FillRAM uses first 32K of ROM image area, otherwise space just
	wasted. Might be read by the SuperFX code. */
441

TwinAphex51224's avatar
TwinAphex51224 committed
442
	Memory.FillRAM = Memory.ROM;
443

444
445
	/* Add 0x8000 to ROM image pointer to stop SuperFX code accessing
	unallocated memory (can cause crash on some ports). */
446

TwinAphex51224's avatar
TwinAphex51224 committed
447
	Memory.ROM += 0x8000;
448

449
450
451
452
	Memory.C4RAM   = Memory.ROM + 0x400000 + 8192 * 8; /* C4 */
	Memory.OBC1RAM = Memory.ROM + 0x400000; /* OBC1 */
	Memory.BIOSROM = Memory.ROM + 0x300000; /* BS */
	Memory.BSRAM   = Memory.ROM + 0x400000; /* BS */
453

TwinAphex51224's avatar
TwinAphex51224 committed
454
	SuperFX.pvRegisters = Memory.FillRAM + 0x3000;
455
	SuperFX.nRamBanks   = 2; /* Most only use 1.  1=64KB=512Mb, 2=128KB=1024Mb */
TwinAphex51224's avatar
TwinAphex51224 committed
456
	SuperFX.pvRam       = Memory.SRAM;
457
	SuperFX.nRomBanks   = (2 * 1024 * 1024) / (32 * 1024);
TwinAphex51224's avatar
TwinAphex51224 committed
458
	SuperFX.pvRom       = (uint8 *) Memory.ROM;
459
460
461
462

	return (TRUE);
}

463
464
465
466
static char * Safe (const char *s)
{
	static char	*safe = NULL;
	static int	safe_len = 0;
467
	int		i, len;
468
469
470
471
472
473
474
475
476
477
478
479

	if (s == NULL)
	{
		if (safe)
		{
			free(safe);
			safe = NULL;
		}

		return (NULL);
	}

480
	len = strlen(s);
481
482
483
484
485
486
487
488
489
	if (!safe || len + 1 > safe_len)
	{
		if (safe)
			free(safe);

		safe_len = len + 1;
		safe = (char *) malloc(safe_len);
	}

490
	for ( i = 0; i < len; i++)
491
492
493
494
495
496
497
498
499
500
501
502
503
	{
		if (s[i] >= 32 && s[i] < 127)
			safe[i] = s[i];
		else
			safe[i] = '_';
	}

	safe[len] = 0;

	return (safe);
}

static char * SafeANK (uint8 ROMRegion, const char *s)
504
505
506
{
	static char	*safe = NULL;
	static int	safe_len = 0;
507
	int		i, len;
508
509
510
511
512
513
514
515
516
517
518
519

	if (s == NULL)
	{
		if (safe)
		{
			free(safe);
			safe = NULL;
		}

		return (NULL);
	}

520
	len = strlen(s);
521
522
523
524
525
526
527
528
529
	if (!safe || len + 1 > safe_len)
	{
		if (safe)
			free(safe);

		safe_len = len + 1;
		safe = (char *) malloc(safe_len);
	}

530
	for ( i = 0; i < len; i++)
531
	{
532
		if (s[i] >= 32 && s[i] < 127) /* ASCII */
533
534
			safe [i] = s[i];
		else
535
		if (ROMRegion == 0 && ((uint8) s[i] >= 0xa0 && (uint8) s[i] < 0xe0)) /* JIS X 201 - Katakana */
536
537
538
539
540
541
542
543
544
545
			safe [i] = s[i];
		else
			safe [i] = '_';
	}

	safe [len] = 0;

	return (safe);
}

TwinAphex51224's avatar
TwinAphex51224 committed
546
void Deinit (void)
547
{
548
	int t;
TwinAphex51224's avatar
TwinAphex51224 committed
549
	if (Memory.RAM)
550
	{
TwinAphex51224's avatar
TwinAphex51224 committed
551
552
		free(Memory.RAM);
		Memory.RAM = NULL;
553
554
	}

TwinAphex51224's avatar
TwinAphex51224 committed
555
	if (Memory.SRAM)
556
	{
TwinAphex51224's avatar
TwinAphex51224 committed
557
558
		free(Memory.SRAM);
		Memory.SRAM = NULL;
559
560
	}

TwinAphex51224's avatar
TwinAphex51224 committed
561
	if (Memory.VRAM)
562
	{
TwinAphex51224's avatar
TwinAphex51224 committed
563
564
		free(Memory.VRAM);
		Memory.VRAM = NULL;
565
566
	}

TwinAphex51224's avatar
TwinAphex51224 committed
567
	if (Memory.ROM)
568
	{
TwinAphex51224's avatar
TwinAphex51224 committed
569
570
571
		Memory.ROM -= 0x8000;
		free(Memory.ROM);
		Memory.ROM = NULL;
572
573
	}

574
575
576
577
578
	if(Settings.SPC7110 || Settings.SPC7110RTC)
	{
		S9xFreeSPC7110();
	}

579
	for ( t = 0; t < 7; t++)
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
	{
		if (IPPU.TileCache[t])
		{
			free(IPPU.TileCache[t]);
			IPPU.TileCache[t] = NULL;
		}

		if (IPPU.TileCached[t])
		{
			free(IPPU.TileCached[t]);
			IPPU.TileCached[t] = NULL;
		}
	}

	Safe(NULL);
TwinAphex51224's avatar
TwinAphex51224 committed
595
	SafeANK(Memory.ROMRegion, NULL);
596
597
}

598
/* file management and ROM detection */
599
600
601

static bool8 allASCII (uint8 *b, int size)
{
602
603
	int i;
	for ( i = 0; i < size; i++)
604
605
606
607
608
609
610
611
612
613
	{
		if (b[i] < 32 || b[i] > 126)
			return (FALSE);
	}

	return (TRUE);
}

static bool8 is_SufamiTurbo_BIOS (uint8 *data, uint32 size)
{
614
615
	if (size == 0x40000 && strncmp((char *) data, "BANDAI SFC-ADX", 14) == 0
	&& strncmp((char * ) (data + 0x10), "SFC-ADX BACKUP", 14) == 0)
616
		return TRUE;
617
   return FALSE;
618
619
620
621
}

static bool8 is_SufamiTurbo_Cart (uint8 *data, uint32 size)
{
622
623
	if (size >= 0x80000 && size <= 0x100000 && strncmp((char *) data, "BANDAI SFC-ADX", 14) == 0
	&& strncmp((char * ) (data + 0x10), "SFC-ADX BACKUP", 14) != 0)
624
		return TRUE;
625
   return FALSE;
626
627
628
629
630
631
}

static bool8 is_SameGame_BIOS (uint8 *data, uint32 size)
{
	if (size == 0x100000 && strncmp((char *) (data + 0xffc0), "Same Game Tsume Game", 20) == 0)
		return (TRUE);
632
   return (FALSE);
633
634
635
636
637
638
}

static bool8 is_SameGame_Add_On (uint8 *data, uint32 size)
{
	if (size == 0x80000)
		return (TRUE);
639
   return (FALSE);
640
641
}

TwinAphex51224's avatar
TwinAphex51224 committed
642
static int ScoreHiROM (uint32 calculated_size, uint8 * rom,  bool8 skip_header, int32 romoff)
643
{
644
645
646
647
648
	uint8	*buf;
	int score;

	score = 0;
	buf = rom + 0xff00 + romoff + (skip_header ? 0x200 : 0);
649
650
651
652

	if (buf[0xd5] & 0x1)
		score += 2;

653
	/* Mode23 is SA-1 */
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
	if (buf[0xd5] == 0x23)
		score -= 2;

	if (buf[0xd4] == 0x20)
		score += 2;

	if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
	{
		score += 2;
		if (0 != (buf[0xde] + (buf[0xdf] << 8)))
			score++;
	}

	if (buf[0xda] == 0x33)
		score += 2;

	if ((buf[0xd5] & 0xf) < 4)
		score += 2;

	if (!(buf[0xfd] & 0x80))
		score -= 6;

	if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
677
		score -= 2; /* reduced after looking at a scan by Cowering */
678

TwinAphex51224's avatar
TwinAphex51224 committed
679
	if (calculated_size > 1024 * 1024 * 3)
680
681
682
683
684
685
686
687
688
689
690
691
692
693
		score += 4;

	if ((1 << (buf[0xd7] - 7)) > 48)
		score -= 1;

	if (!allASCII(&buf[0xb0], 6))
		score -= 1;

	if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
		score -= 1;

	return (score);
}

TwinAphex51224's avatar
TwinAphex51224 committed
694
static int ScoreLoROM (uint32 calculated_size, uint8 * rom, bool8 skip_header, int32 romoff)
695
{
696
697
698
699
700
	uint8	*buf;
	int score;

	score = 0;
	buf = rom + 0x7f00 + romoff + (skip_header ? 0x200 : 0);
701
702
703
704

	if (!(buf[0xd5] & 0x1))
		score += 3;

705
	/* Mode23 is SA-1 */
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
	if (buf[0xd5] == 0x23)
		score += 2;

	if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
	{
		score += 2;
		if (0 != (buf[0xde] + (buf[0xdf] << 8)))
			score++;
	}

	if (buf[0xda] == 0x33)
		score += 2;

	if ((buf[0xd5] & 0xf) < 4)
		score += 2;

	if (!(buf[0xfd] & 0x80))
		score -= 6;

	if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
726
		score -= 2; /* reduced per Cowering suggestion */
727

TwinAphex51224's avatar
TwinAphex51224 committed
728
	if (calculated_size <= 1024 * 1024 * 16)
729
730
731
732
733
734
735
736
737
738
739
740
741
742
		score += 2;

	if ((1 << (buf[0xd7] - 7)) > 48)
		score -= 1;

	if (!allASCII(&buf[0xb0], 6))
		score -= 1;

	if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
		score -= 1;

	return (score);
}

743
uint32 HeaderRemove (uint32 size, int32 * headerCount, uint8 *buf)
744
{
745
746
747
	uint32 calc_size;

	calc_size = (size / 0x2000) * 0x2000;
748

749
	if (size - calc_size == 512)
750
751
	{
		memmove(buf, buf + 512, calc_size);
752
		*(headerCount)++;
753
754
755
756
757
758
		size -= 512;
	}

	return (size);
}

TwinAphex51224's avatar
TwinAphex51224 committed
759
static uint32 FileLoader (uint8 *buffer, const char *filename, int32 maxsize)
760
{
761
762
763
	/* <- ROM size without header */
	/* ** Memory.HeaderCount */
	/* ** Memory.ROMFilename */
764

765
	bool8	more;
766
	int32	totalSize;
767
	uint32	size;
768
	char	fname[PATH_MAX + 1], drive[_MAX_DRIVE + 1], dir[PATH_MAX + 1], name[PATH_MAX + 1], exts[PATH_MAX + 1];
769
	char	*ext;
770
	int	len;
771
	uint8	*ptr;
772
	STREAM	fp;
773

774
775
	totalSize = 0;

776
777
	ext = &exts[0];

TwinAphex51224's avatar
TwinAphex51224 committed
778
	Memory.HeaderCount = 0;
779
780
781
782

	_splitpath(filename, drive, dir, name, exts);
	_makepath(fname, drive, dir, name, exts);

783
784
785
	fp = OPEN_STREAM(fname, "rb");
	if (!fp)
		return (0);
786

787
	strcpy(Memory.ROMFilename, fname);
TwinAphex51224's avatar
TwinAphex51224 committed
788

789
790
791
792
	len  = 0;
	size = 0;
	more = FALSE;
	ptr = buffer;
793

794
795
796
797
	do
	{
		size = READ_STREAM(ptr, maxsize + 0x200 - (ptr - buffer), fp);
		CLOSE_STREAM(fp);
798

799
800
801
		size = HeaderRemove(size, &Memory.HeaderCount, ptr);
		totalSize += size;
		ptr += size;
802

803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
		/* check for multi file roms*/
		if (ptr - buffer < maxsize + 0x200 &&
				(isdigit(ext[0]) && ext[1] == 0 && ext[0] < '9'))
		{
			more = TRUE;
			ext[0]++;
			_makepath(fname, drive, dir, name, exts);
		}
		else
			if (ptr - buffer < maxsize + 0x200 &&
					(((len = strlen(name)) == 7 || len == 8) &&
						strncasecmp(name, "sf", 2) == 0 &&
						isdigit(name[2]) && isdigit(name[3]) && isdigit(name[4]) && isdigit(name[5]) &&
						isalpha(name[len - 1])))
			{
				more = TRUE;
				name[len - 1]++;
				_makepath(fname, drive, dir, name, exts);
TwinAphex51224's avatar
TwinAphex51224 committed
821
			}
822
823
824
825
			else
				more = FALSE;

	}	while (more && (fp = OPEN_STREAM(fname, "rb")) != NULL);
826

TwinAphex51224's avatar
TwinAphex51224 committed
827
	if (Memory.HeaderCount == 0)
828
829
		S9xMessage(S9X_INFO, S9X_HEADERS_INFO, "No ROM file header found.");
	else
TwinAphex51224's avatar
TwinAphex51224 committed
830
831
832
833
		if (Memory.HeaderCount == 1)
			S9xMessage(S9X_INFO, S9X_HEADERS_INFO, "Found ROM file header (and ignored it).");
		else
			S9xMessage(S9X_INFO, S9X_HEADERS_INFO, "Found multiple ROM file headers (and ignored them).");
834
835
836
837

	return ((uint32) totalSize);
}

TwinAphex51224's avatar
TwinAphex51224 committed
838
static uint32 caCRC32 (uint8 *array, uint32 size, uint32 crc32)
839
{
840
	uint32 i;
841

842
	for ( i = 0; i < size; i++)
TwinAphex51224's avatar
TwinAphex51224 committed
843
		crc32 = ((crc32 >> 8) & 0x00FFFFFF) ^ crc32Table[(crc32 ^ array[i]) & 0xFF];
844

TwinAphex51224's avatar
TwinAphex51224 committed
845
846
	return (~crc32);
}
847

TwinAphex51224's avatar
TwinAphex51224 committed
848
bool8 LoadROM (const char *filename)
849
{
850
	int	hi_score, lo_score, retry_count;
851
852
853
	bool8 interleaved, tales;
	uint8 * RomHeader;
	int32 totalFileSize;
854

855
856
	retry_count = 0;

Themaister's avatar
Themaister committed
857
	if (!filename)
858
		return FALSE;
859

860
861
	memset(Memory.ROM, 0, MAX_ROM_SIZE);
	memset(&Multi, 0, sizeof(Multi));
862

TwinAphex51224's avatar
TwinAphex51224 committed
863
again:
TwinAphex51224's avatar
TwinAphex51224 committed
864
865
	Memory.CalculatedSize = 0;
	Memory.ExtendedFormat = NOPE;
866

TwinAphex51224's avatar
TwinAphex51224 committed
867
	totalFileSize = FileLoader(Memory.ROM, filename, MAX_ROM_SIZE);
TwinAphex51224's avatar
TwinAphex51224 committed
868
	if (!totalFileSize)
869
		return FALSE;
870

TwinAphex51224's avatar
TwinAphex51224 committed
871
872
	hi_score = ScoreHiROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
	lo_score = ScoreLoROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
873

TwinAphex51224's avatar
TwinAphex51224 committed
874
875
876
	if (Memory.HeaderCount == 0 && !Settings.ForceNoHeader &&
		((hi_score >  lo_score && ScoreHiROM(Memory.CalculatedSize, Memory.ROM, TRUE, 0) > hi_score) ||
		 (hi_score <= lo_score && ScoreLoROM(Memory.CalculatedSize, Memory.ROM, TRUE, 0) > lo_score)))
877
	{
TwinAphex51224's avatar
TwinAphex51224 committed
878
		memmove(Memory.ROM, Memory.ROM + 512, totalFileSize - 512);
TwinAphex51224's avatar
TwinAphex51224 committed
879
880
		totalFileSize -= 512;
		S9xMessage(S9X_INFO, S9X_HEADER_WARNING, "Try 'force no-header' option if the game doesn't work");
881
		/* modifying ROM, so we need to rescore */
TwinAphex51224's avatar
TwinAphex51224 committed
882
883
		hi_score = ScoreHiROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
		lo_score = ScoreLoROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
884
885
	}

TwinAphex51224's avatar
TwinAphex51224 committed
886
	Memory.CalculatedSize = (totalFileSize / 0x2000) * 0x2000;
887

TwinAphex51224's avatar
TwinAphex51224 committed
888
	if (Memory.CalculatedSize > 0x400000 &&
889
		(Memory.ROM[0x7fd5] + (Memory.ROM[0x7fd6] << 8)) != 0x4332 && /* exclude S-DD1 */
TwinAphex51224's avatar
TwinAphex51224 committed
890
		(Memory.ROM[0x7fd5] + (Memory.ROM[0x7fd6] << 8)) != 0x4532 &&
891
		(Memory.ROM[0xffd5] + (Memory.ROM[0xffd6] << 8)) != 0xF93a && /* exclude SPC7110 */
TwinAphex51224's avatar
TwinAphex51224 committed
892
893
		(Memory.ROM[0xffd5] + (Memory.ROM[0xffd6] << 8)) != 0xF53a)
		Memory.ExtendedFormat = YEAH;
894

895
	/* if both vectors are invalid, it's type 1 interleaved LoROM */
TwinAphex51224's avatar
TwinAphex51224 committed
896
897
898
	if (Memory.ExtendedFormat == NOPE &&
		((Memory.ROM[0x7ffc] + (Memory.ROM[0x7ffd] << 8)) < 0x8000) &&
		((Memory.ROM[0xfffc] + (Memory.ROM[0xfffd] << 8)) < 0x8000))
899
	{
TwinAphex51224's avatar
TwinAphex51224 committed
900
		if (!Settings.ForceInterleaved && !Settings.ForceNotInterleaved)
TwinAphex51224's avatar
TwinAphex51224 committed
901
			S9xDeinterleaveType1(totalFileSize, Memory.ROM);
902
903
	}

904
	/* CalculatedSize is now set, so rescore */
TwinAphex51224's avatar
TwinAphex51224 committed
905
906
	hi_score = ScoreHiROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
	lo_score = ScoreLoROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
907

908
	RomHeader = Memory.ROM;
909

TwinAphex51224's avatar
TwinAphex51224 committed
910
	if (Memory.ExtendedFormat != NOPE)
911
	{
TwinAphex51224's avatar
TwinAphex51224 committed
912
		int	swappedhirom, swappedlorom;
913

TwinAphex51224's avatar
TwinAphex51224 committed
914
915
		swappedhirom = ScoreHiROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0x400000);
		swappedlorom = ScoreLoROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0x400000);
916

917
		/* set swapped here */
TwinAphex51224's avatar
TwinAphex51224 committed
918
919
		if (max(swappedlorom, swappedhirom) >= max(lo_score, hi_score))
		{
TwinAphex51224's avatar
TwinAphex51224 committed
920
			Memory.ExtendedFormat = BIGFIRST;
TwinAphex51224's avatar
TwinAphex51224 committed
921
922
923
924
925
			hi_score = swappedhirom;
			lo_score = swappedlorom;
			RomHeader += 0x400000;
		}
		else
TwinAphex51224's avatar
TwinAphex51224 committed
926
			Memory.ExtendedFormat = SMALLFIRST;
TwinAphex51224's avatar
TwinAphex51224 committed
927
	}
928

929
930
	interleaved = FALSE;
	tales = FALSE;
931

932
	interleaved = Settings.ForceInterleaved || Settings.ForceInterleaved2 || Settings.ForceInterleaveGD24;
933

TwinAphex51224's avatar
TwinAphex51224 committed
934
935
	if (Settings.ForceLoROM || (!Settings.ForceHiROM && lo_score >= hi_score))
	{
TwinAphex51224's avatar
TwinAphex51224 committed
936
937
		Memory.LoROM = TRUE;
		Memory.HiROM = FALSE;
938

939
		/* ignore map type byte if not 0x2x or 0x3x */
TwinAphex51224's avatar
TwinAphex51224 committed
940
941
942
943
944
945
946
		if ((RomHeader[0x7fd5] & 0xf0) == 0x20 || (RomHeader[0x7fd5] & 0xf0) == 0x30)
		{
			switch (RomHeader[0x7fd5] & 0xf)
			{
				case 1:
					interleaved = TRUE;
					break;
947

TwinAphex51224's avatar
TwinAphex51224 committed
948
949
950
951
952
953
954
955
				case 5:
					interleaved = TRUE;
					tales = TRUE;
					break;
			}
		}
	}
	else
956
	{
TwinAphex51224's avatar
TwinAphex51224 committed
957
958
		Memory.LoROM = FALSE;
		Memory.HiROM = TRUE;
959

TwinAphex51224's avatar
TwinAphex51224 committed
960
		if ((RomHeader[0xffd5] & 0xf0) == 0x20 || (RomHeader[0xffd5] & 0xf0) == 0x30)
961
		{
TwinAphex51224's avatar
TwinAphex51224 committed
962
963
964
965
966
967
968
			switch (RomHeader[0xffd5] & 0xf)
			{
				case 0:
				case 3:
					interleaved = TRUE;
					break;
			}
969
970
971
		}
	}

972
	/* these two games fail to be detected otherwise */
TwinAphex51224's avatar
TwinAphex51224 committed
973
974
	if (!Settings.ForceHiROM && !Settings.ForceLoROM)
	{
TwinAphex51224's avatar
TwinAphex51224 committed
975
976
		if (strncmp((char *) &Memory.ROM[0x7fc0], "YUYU NO QUIZ DE GO!GO!", 22) == 0 ||
		   (strncmp((char *) &Memory.ROM[0xffc0], "BATMAN--REVENGE JOKER",  21) == 0))
TwinAphex51224's avatar
TwinAphex51224 committed
977
		{
TwinAphex51224's avatar
TwinAphex51224 committed
978
979
			Memory.LoROM = TRUE;
			Memory.HiROM = FALSE;
TwinAphex51224's avatar
TwinAphex51224 committed
980
981
982
983
			interleaved = FALSE;
			tales = FALSE;
		}
	}
984

TwinAphex51224's avatar
TwinAphex51224 committed
985
986
987
	if (!Settings.ForceNotInterleaved && interleaved)
	{
		S9xMessage(S9X_INFO, S9X_ROM_INTERLEAVED_INFO, "ROM image is in interleaved format - converting...");
988

TwinAphex51224's avatar
TwinAphex51224 committed
989
990
		if (tales)
		{
TwinAphex51224's avatar
TwinAphex51224 committed
991
			if (Memory.ExtendedFormat == BIGFIRST)
TwinAphex51224's avatar
TwinAphex51224 committed
992
			{
TwinAphex51224's avatar
TwinAphex51224 committed
993
994
				S9xDeinterleaveType1(0x400000, Memory.ROM);
				S9xDeinterleaveType1(Memory.CalculatedSize - 0x400000, Memory.ROM + 0x400000);
TwinAphex51224's avatar
TwinAphex51224 committed
995
996
997
			}
			else
			{
TwinAphex51224's avatar
TwinAphex51224 committed
998
999
				S9xDeinterleaveType1(Memory.CalculatedSize - 0x400000, Memory.ROM);
				S9xDeinterleaveType1(0x400000, Memory.ROM + Memory.CalculatedSize - 0x400000);
TwinAphex51224's avatar
TwinAphex51224 committed
1000
			}
1001

TwinAphex51224's avatar
TwinAphex51224 committed
1002
1003
			Memory.LoROM = FALSE;
			Memory.HiROM = TRUE;
TwinAphex51224's avatar
TwinAphex51224 committed
1004
1005
		}
		else
TwinAphex51224's avatar
TwinAphex51224 committed
1006
		if (Settings.ForceInterleaveGD24 && Memory.CalculatedSize == 0x300000)
TwinAphex51224's avatar
TwinAphex51224 committed
1007
		{
TwinAphex51224's avatar
TwinAphex51224 committed
1008
1009
1010
1011
			bool8	t = Memory.LoROM;
			Memory.LoROM = Memory.HiROM;
			Memory.HiROM = t;
			S9xDeinterleaveGD24(Memory.CalculatedSize, Memory.ROM);
TwinAphex51224's avatar
TwinAphex51224 committed
1012
1013
1014
		}
		else
		if (Settings.ForceInterleaved2)
TwinAphex51224's avatar
TwinAphex51224 committed
1015
			S9xDeinterleaveType2(Memory.CalculatedSize, Memory.ROM);
TwinAphex51224's avatar
TwinAphex51224 committed
1016
1017
		else
		{
TwinAphex51224's avatar
TwinAphex51224 committed
1018
1019
1020
1021
			bool8	t = Memory.LoROM;
			Memory.LoROM = Memory.HiROM;
			Memory.HiROM = t;
			S9xDeinterleaveType1(Memory.CalculatedSize, Memory.ROM);
TwinAphex51224's avatar
TwinAphex51224 committed
1022
		}
1023

TwinAphex51224's avatar
TwinAphex51224 committed
1024
1025
		hi_score = ScoreHiROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
		lo_score = ScoreLoROM(Memory.CalculatedSize, Memory.ROM, FALSE, 0);
1026

TwinAphex51224's avatar
TwinAphex51224 committed
1027
1028
		if ((Memory.HiROM && (lo_score >= hi_score || hi_score < 0)) ||
			(Memory.LoROM && (hi_score >  lo_score || lo_score < 0)))
TwinAphex51224's avatar
TwinAphex51224 committed
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
		{
			if (retry_count == 0)
			{
				S9xMessage(S9X_INFO, S9X_ROM_CONFUSING_FORMAT_INFO, "ROM lied about its type! Trying again.");
				Settings.ForceNotInterleaved = TRUE;
				Settings.ForceInterleaved = FALSE;
				retry_count++;
				goto again;
			}
		}
    }
1040

TwinAphex51224's avatar
TwinAphex51224 committed
1041
	if (Memory.ExtendedFormat == SMALLFIRST)
TwinAphex51224's avatar
TwinAphex51224 committed
1042
		tales = TRUE;
1043

TwinAphex51224's avatar
TwinAphex51224 committed
1044
1045
	if (tales)
	{
TwinAphex51224's avatar
TwinAphex51224 committed
1046
		uint8	*tmp = (uint8 *) malloc(Memory.CalculatedSize - 0x400000);
TwinAphex51224's avatar
TwinAphex51224 committed
1047
1048
1049
		if (tmp)
		{
			S9xMessage(S9X_INFO, S9X_ROM_INTERLEAVED_INFO, "Fixing swapped ExHiROM...");
TwinAphex51224's avatar
TwinAphex51224 committed
1050
1051
1052
			memmove(tmp, Memory.ROM, Memory.CalculatedSize - 0x400000);
			memmove(Memory.ROM, Memory.ROM + Memory.CalculatedSize - 0x400000, 0x400000);
			memmove(Memory.ROM + 0x400000, tmp, Memory.CalculatedSize - 0x400000);
TwinAphex51224's avatar
TwinAphex51224 committed
1053
1054
			free(tmp);
		}
1055
1056
	}

1057
	memset(&SNESGameFixes, 0, sizeof(SNESGameFixes));
TwinAphex51224's avatar
TwinAphex51224 committed
1058
	SNESGameFixes.SRAMInitialValue = 0x60;
1059

TwinAphex51224's avatar
TwinAphex51224 committed
1060
	S9xLoadCheatFile(S9xGetFilename(".cht", CHEAT_DIR));
1061

TwinAphex51224's avatar
TwinAphex51224 committed
1062
	InitROM();
1063

TwinAphex51224's avatar
TwinAphex51224 committed
1064
1065
	S9xInitCheatData();
	S9xApplyCheats();
1066

TwinAphex51224's avatar
TwinAphex51224 committed
1067
	S9xReset();
1068

TwinAphex51224's avatar
TwinAphex51224 committed
1069
1070
    return (TRUE);
}
1071

TwinAphex51224's avatar
TwinAphex51224 committed
1072
bool8 LoadMultiCart (const char *cartA, const char *cartB)
1073
{
1074
1075
1076
	bool8 r;

	r = TRUE;
1077

1078
1079
	memset(Memory.ROM, 0, MAX_ROM_SIZE);
	memset(&Multi, 0, sizeof(Multi));
1080

TwinAphex51224's avatar
TwinAphex51224 committed
1081
1082
	Memory.CalculatedSize = 0;
	Memory.ExtendedFormat = NOPE;
1083

TwinAphex51224's avatar
TwinAphex51224 committed
1084
	if (cartA && cartA[0])
TwinAphex51224's avatar
TwinAphex51224 committed
1085
		Multi.cartSizeA = FileLoader(Memory.ROM, cartA, MAX_ROM_SIZE);
1086

TwinAphex51224's avatar
TwinAphex51224 committed
1087
1088
1089
	if (Multi.cartSizeA == 0)
	{
		if (cartB && cartB[0])
TwinAphex51224's avatar
TwinAphex51224 committed
1090
			Multi.cartSizeB = FileLoader(Memory.ROM, cartB, MAX_ROM_SIZE);
TwinAphex51224's avatar
TwinAphex51224 committed
1091
	}
1092

TwinAphex51224's avatar
TwinAphex51224 committed
1093
	if (Multi.cartSizeA)
1094
	{
TwinAphex51224's avatar
TwinAphex51224 committed
1095
		if (is_SufamiTurbo_Cart(Memory.ROM, Multi.cartSizeA))
TwinAphex51224's avatar
TwinAphex51224 committed
1096
			Multi.cartType = 4;
1097
		else
TwinAphex51224's avatar
TwinAphex51224 committed
1098
		if (is_SameGame_BIOS(Memory.ROM, Multi.cartSizeA))
TwinAphex51224's avatar
TwinAphex51224 committed
1099
			Multi.cartType = 3;
1100
1101
	}
	else
TwinAphex51224's avatar
TwinAphex51224 committed
1102
	if (Multi.cartSizeB)
1103
	{
TwinAphex51224's avatar
TwinAphex51224 committed
1104
		if (is_SufamiTurbo_Cart(Memory.ROM, Multi.cartSizeB))
TwinAphex51224's avatar
TwinAphex51224 committed
1105
			Multi.cartType = 4;
1106
	}
TwinAphex51224's avatar
TwinAphex51224 committed
1107
	else
1108
		Multi.cartType = 4; /* assuming BIOS only */
1109

TwinAphex51224's avatar
TwinAphex51224 committed
1110
	switch (Multi.cartType)
1111
	{
TwinAphex51224's avatar
TwinAphex51224 committed
1112
1113
		case 4:
			r = LoadSufamiTurbo(cartA, cartB);
1114
1115
			break;

TwinAphex51224's avatar
TwinAphex51224 committed
1116
1117
		case 3:
			r = LoadSameGame(cartA, cartB);
1118
1119
			break;

TwinAphex51224's avatar
TwinAphex51224 committed
1120
1121
1122
		default:
			r = FALSE;
	}
1123

TwinAphex51224's avatar
TwinAphex51224 committed
1124
1125
	if (!r)
	{
1126
		memset(&Multi, 0, sizeof(Multi));
TwinAphex51224's avatar
TwinAphex51224 committed
1127
		return (FALSE);
1128
1129
	}

1130
	memset(&SNESGameFixes, 0, sizeof(SNESGameFixes));
TwinAphex51224's avatar
TwinAphex51224 committed
1131
	SNESGameFixes.SRAMInitialValue = 0x60;
TwinAphex51224's avatar