summaryrefslogtreecommitdiff
path: root/src/snes9x.h
blob: 0201ad945d034d0b021e74991d342ad75473e968 (plain)
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
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
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
/*
 * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
 *
 * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
 *                           Jerremy Koot (jkoot@snes9x.com)
 *
 * Super FX C emulator code 
 * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
 *                           Gary Henderson.
 * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
 *
 * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
 * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
 * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
 *
 * DOS port code contains the works of other authors. See headers in
 * individual files.
 *
 * Snes9x homepage: http://www.snes9x.com
 *
 * Permission to use, copy, modify and 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.
 *
 * Snes9x is freeware for PERSONAL USE only. Commercial users should
 * seek permission of the copyright holders first. Commercial use includes
 * charging money for Snes9x or software derived from Snes9x.
 *
 * 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.
 */
#ifndef _SNES9X_H_
#define _SNES9X_H_

#define VERSION "1.39"

#include <stdio.h>
#include <stdlib.h>

#ifdef __WIN32__
#include "..\wsnes9x.h"
#include "..\zlib\zlib.h"
#endif

#include "port.h"
#include "65c816.h"
#include "messages.h"

#if defined(USE_GLIDE) && !defined(GFX_MULTI_FORMAT)
#define GFX_MULTI_FORMAT
#endif

#define ROM_NAME_LEN 23

#ifdef __LIBRETRO__
#include "../libretro/memstream.h"
#define STREAM memstream_t *
#define READ_STREAM(p, l, s)     memstream_read(s, p, l)
#define WRITE_STREAM(p, l, s)    memstream_write(s, p, l)
#define OPEN_STREAM(f, m)        memstream_open()
#define CLOSE_STREAM(s)          memstream_close(s)
#define SEEK_STREAM(p,r,s)   memstream_seek(p,r,s)
#elif defined(ZLIB)
//#ifndef __WIN32__
#include "zlib.h"
//#endif
#define STREAM gzFile
#define READ_STREAM(p,l,s) gzread (s,p,l)
#define WRITE_STREAM(p,l,s) gzwrite (s,p,l)
#define OPEN_STREAM(f,m) gzopen (f,m)
#define CLOSE_STREAM(s) gzclose (s)
#define SEEK_STREAM(p,r,s) gzseek(s,p,r)
#else
#ifdef __GP32__
#define STREAM long * //F_HANDLE * 
#define READ_STREAM(p,l,s) gp32_fread ((unsigned char*)p,(long)l,s)
#define WRITE_STREAM(p,l,s) gp32_fwrite ((unsigned char*)p,(long)l,s)
#define OPEN_STREAM(f,m) gp32_fopen ((char*)f,(char*)m)
#define CLOSE_STREAM(s) gp32_fclose (s)
#define SEEK_STREAM(p,r,s) gp32_fseek(p,r,s)

#else
#define STREAM FILE *
#define READ_STREAM(p,l,s) fread (p,1,l,s)
#define WRITE_STREAM(p,l,s) fwrite (p,1,l,s)
#define OPEN_STREAM(f,m) fopen (f,m)
#define CLOSE_STREAM(s) fclose (s)
#define SEEK_STREAM(p,r,s) fseek(s,p,r)
#define FROM_CURRENT SEEK_CUR
#endif
#endif


/* SNES screen width and height */
#define SNES_WIDTH		256
#define SNES_HEIGHT		224
#define SNES_HEIGHT_EXTENDED	239
#define IMAGE_WIDTH		(Settings.SupportHiRes ? SNES_WIDTH * 2 : SNES_WIDTH)
#define IMAGE_HEIGHT		(Settings.SupportHiRes ? SNES_HEIGHT_EXTENDED * 2 : SNES_HEIGHT_EXTENDED)

#define SNES_MAX_NTSC_VCOUNTER  262
#define SNES_MAX_PAL_VCOUNTER   312
#define SNES_HCOUNTER_MAX	342
#define SPC700_TO_65C816_RATIO	2
#define AUTO_FRAMERATE		200

#define PPU_IGNORE_FIXEDCOLCHANGES 			(1<<0)
#define PPU_IGNORE_WINDOW					(1<<1)
#define PPU_IGNORE_ADDSUB					(1<<2)
#define PPU_IGNORE_PALWRITE				 	(1<<3)
#define GFX_IGNORE_OBJ				 		(1<<4)
#define GFX_IGNORE_BG0				 		(1<<5)
#define GFX_IGNORE_BG1				 		(1<<6)
#define GFX_IGNORE_BG2				 		(1<<7)
#define GFX_IGNORE_BG3				 		(1<<8)

// NTSC master clock signal 21.47727MHz
// PPU: master clock / 4
// 1 / PPU clock * 342 -> 63.695us
// 63.695us / (1 / 3.579545MHz) -> 228 cycles per scanline
// From Earth Worm Jim: APU executes an average of 65.14285714 cycles per
// scanline giving an APU clock speed of 1.022731096MHz

// PAL master clock signal 21.28137MHz
// PPU: master clock / 4
// 1 / PPU clock * 342 -> 64.281us
// 64.281us / (1 / 3.546895MHz) -> 228 cycles per scanline.

//#define SNES_SCANLINE_TIME (63.695e-6)
//#define SNES_CLOCK_SPEED (3579545)

//#define SNES_CLOCK_LEN (1.0 / SNES_CLOCK_SPEED)

//#define SNES_APUTIMER2_CYCLEx10000 ((uint32) 3355824)

#ifdef VAR_CYCLES
//#define SNES_CYCLES_PER_SCANLINE ((uint32) ((SNES_SCANLINE_TIME / SNES_CLOCK_LEN) * 6 + 0.5))
#define SNES_CYCLES_PER_SCANLINE ((uint32)(228*6))
#else
//#define SNES_CYCLES_PER_SCANLINE ((uint32) (SNES_SCANLINE_TIME / SNES_CLOCK_LEN + 0.5))
#define SNES_CYCLES_PER_SCANLINE ((uint32)(228))
#endif

#define SNES_TR_MASK	    (1 << 4)
#define SNES_TL_MASK	    (1 << 5)
#define SNES_X_MASK	    (1 << 6)
#define SNES_A_MASK	    (1 << 7)
#define SNES_RIGHT_MASK	    (1 << 8)
#define SNES_LEFT_MASK	    (1 << 9)
#define SNES_DOWN_MASK	    (1 << 10)
#define SNES_UP_MASK	    (1 << 11)
#define SNES_START_MASK	    (1 << 12)
#define SNES_SELECT_MASK    (1 << 13)
#define SNES_Y_MASK	    (1 << 14)
#define SNES_B_MASK	    (1 << 15)

enum {
    SNES_MULTIPLAYER5,
    SNES_JOYPAD,
    SNES_MOUSE_SWAPPED,
    SNES_MOUSE,
    SNES_SUPERSCOPE,
	SNES_JUSTIFIER,
	SNES_JUSTIFIER_2,
    SNES_MAX_CONTROLLER_OPTIONS
};

#define DEBUG_MODE_FLAG	    (1 << 0)
#define TRACE_FLAG			(1 << 1)
#define SINGLE_STEP_FLAG    (1 << 2)
#define BREAK_FLAG			(1 << 3)
#define SCAN_KEYS_FLAG	    (1 << 4)
#define SAVE_SNAPSHOT_FLAG  (1 << 5)
#define DELAYED_NMI_FLAG    (1 << 6)
#define NMI_FLAG			(1 << 7)
#define PROCESS_SOUND_FLAG  (1 << 8)
#define FRAME_ADVANCE_FLAG  (1 << 9)
#define DELAYED_NMI_FLAG2   (1 << 10)
#define IRQ_PENDING_FLAG    (1 << 11)

#ifdef VAR_CYCLES
#define ONE_CYCLE 6
#define SLOW_ONE_CYCLE 8
#define TWO_CYCLES 12
#else
#define ONE_CYCLE 1
#define SLOW_ONE_CYCLE 1
#define TWO_CYCLES 2
#endif


#undef MEMMAP_BLOCK_SIZE
#define MEMMAP_BLOCK_SIZE (0x1000)
#undef MEMMAP_NUM_BLOCKS
#define MEMMAP_NUM_BLOCKS (0x1000000 / MEMMAP_BLOCK_SIZE)

struct SCPUState{
    uint32  Flags;					//0
    bool8   BranchSkip;				//4
    bool8   NMIActive;				//5
    bool8   IRQActive;				//6
    bool8   WaitingForInterrupt;	//7
    struct SRegisters Regs;			//8
		//uint8  PB;				//8		--> status
		//uint8  DB;				//9
		//pair   P;					//10
		//pair   A;					//12
		//pair   D;					//14
		//pair   X;					//16
		//pair   S;					//18
		//pair   Y;					//20
	    //uint16 PC;				//22
    uint8   *PC;					//24
    int32   Cycles;					//28
    uint8   *PCBase;				//32
    uint8   *PCAtOpcodeStart;		//36
    uint8   *WaitAddress;			//40
    uint32  WaitCounter;			//44
    volatile int32   NextEvent;				//48
    int32   V_Counter;				//52
    int32   MemSpeed;				//56
    int32   MemSpeedx2;				//60
	int32   FastROMSpeed;			//64
    uint32 AutoSaveTimer;    		//68
    uint32 NMITriggerPoint;    		//72
    uint32 NMICycleCount;			//76
    uint32 IRQCycleCount;			//80

    bool8   InDMA;					//84
    uint8   WhichEvent;				//85
	bool8  SRAMModified;			//86
	bool8  BRKTriggered;			//87
	uint32	_ARM_asm_reserved_1;	//88  to stock current jmp table
    bool8  TriedInterleavedMode2;	//92
    bool8  _ARM_asm_padding1[3];	//93
    
    uint8*	Memory_Map;				//96
    uint8*	Memory_WriteMap;		//100
    uint32*	Memory_MemorySpeed;		//104
    uint8*	Memory_BlockIsRAM;		//108
    uint8*	Memory_SRAM;			//112
    uint8*	Memory_BWRAM;			//116
    uint32	Memory_SRAMMask;		//120
    bool32	APU_APUExecuting;		//124
    bool32	_ARM_asm_padding2;		//128
    uint32	_PALMSOS_R9;			//132
    uint32	_PALMSOS_R10;    		//136
  	volatile int32	APU_Cycles;				//140 notaz
	void *DSPGet;
	void *DSPSet;
	int32 rstatus; 
};


#define HBLANK_START_EVENT 0
#define HBLANK_END_EVENT 1
#define HTIMER_BEFORE_EVENT 2
#define HTIMER_AFTER_EVENT 3
#define NO_EVENT 4

struct SSettings{
    // CPU options
    bool8  APUEnabled;
    bool8  Shutdown;

    uint8  SoundSkipMethod;
    long   H_Max;
    long   HBlankStart;
    long   CyclesPercentage;
    bool8  DisableIRQ;
    bool8  Paused;
    bool8  ForcedPause;
    bool8  StopEmulation;

    // Tracing options
    bool8  TraceDMA;
    bool8  TraceHDMA;
    bool8  TraceVRAM;
    bool8  TraceUnknownRegisters;
    bool8  TraceDSP;

    // Joystick options
    bool8  SwapJoypads;
    bool8  JoystickEnabled;

    // ROM timing options (see also H_Max above)
    bool8  ForcePAL;
    bool8  ForceNTSC;
    bool8  PAL;
    uint32 FrameTimePAL;
    uint32 FrameTimeNTSC;
    uint32 FrameTime;
    uint32 SkipFrames;

    // ROM image options
    bool8  ForceLoROM;
    bool8  ForceHiROM;
    bool8  ForceHeader;
    bool8  ForceNoHeader;
    bool8  ForceInterleaved;
    bool8  ForceInterleaved2;
    bool8  ForceNotInterleaved;

    // Peripherial options
    bool8  ForceSuperFX;
    bool8  ForceNoSuperFX;
    bool8  ForceDSP1;
    bool8  ForceNoDSP1;
    bool8  ForceSA1;
    bool8  ForceNoSA1;
    bool8  ForceC4;
    bool8  ForceNoC4;
    bool8  ForceSDD1;
    bool8  ForceNoSDD1;
    bool8  MultiPlayer5;
    bool8  Mouse;
    bool8  SuperScope;
    bool8  SRTC;
    uint32 ControllerOption;
    
    bool8  ShutdownMaster;
    bool8  MultiPlayer5Master;
    bool8  SuperScopeMaster;
    bool8  MouseMaster;
    bool8  SuperFX;
    bool8  DSP1Master;
    bool8  SA1;
    bool8  C4;
    bool8  SDD1;

    // Sound options
    uint32 SoundPlaybackRate;
    bool8  TraceSoundDSP;
    bool8  Stereo;
    bool8  ReverseStereo;
    bool8  SixteenBitSound;
    int    SoundBufferSize;
    int    SoundMixInterval;
    bool8  SoundEnvelopeHeightReading;
    bool8  DisableSoundEcho;
    bool8  DisableSampleCaching;
    bool8  DisableMasterVolume;
    bool8  SoundSync;
    bool8  InterpolatedSound;
    bool8  ThreadSound;
    bool8  Mute;
//    bool8  NextAPUEnabled;
    uint8  AltSampleDecode;
    bool8  FixFrequency;
    
    // Graphics options
    bool8  SixteenBit;
    bool8  Transparency;
    bool8  SupportHiRes;
    bool8  Mode7Interpolate;

    // SNES graphics options
    bool8  BGLayering;
    bool8  DisableGraphicWindows;
    bool8  ForceTransparency;
    bool8  ForceNoTransparency;
    bool8  DisableHDMA;
    bool8  DisplayFrameRate;

    // Others
    bool8  NetPlay;
    bool8  NetPlayServer;
    char   ServerName [128];
    int    Port;
    bool8  GlideEnable;
    bool8  OpenGLEnable;
    int32  AutoSaveDelay; // Time in seconds before S-RAM auto-saved if modified.
    bool8  ApplyCheats;
    bool8  TurboMode;
    uint32 TurboSkipFrames;
    uint32 AutoMaxSkipFrames;
	uint32 os9x_hack;
    
// Fixes for individual games
    uint32 StrikeGunnerOffsetHack;
    bool8  ChuckRock;
    bool8  StarfoxHack;
    bool8  WinterGold;
    bool8  Dezaemon;
    bool8  WrestlemaniaArcade;
    bool8  BS;	// Japanese Satellite System games.
    bool8  DaffyDuck;
    uint8  APURAMInitialValue;
    bool8  SDD1Pack;
    
	bool8 asmspc700;
	bool8 SpeedHacks;
#ifdef __WIN32__
    int    SoundDriver;
#endif
};

struct SSNESGameFixes
{
    uint8 NeedInit0x2137;
    uint8 umiharakawaseFix;
    uint8 alienVSpredetorFix;
    uint8 APU_OutPorts_ReturnValueFix;
    uint8 Old_Read0x4200;
    uint8 _0x213E_ReturnValue;
    uint8 TouhaidenControllerFix;
    uint8 SoundEnvelopeHeightReading2;
    uint8 SRAMInitialValue;
    uint8 Uniracers;
    uint8 Flintstones;
    uint8 Mode7Hack;
};

START_EXTERN_C
extern struct SSettings Settings;
extern struct SCPUState CPU;
extern struct SSNESGameFixes SNESGameFixes;
extern char String [513];

void S9xExit ();
void S9xMessage (int type, int number, const char *message);
void S9xLoadSDD1Data ();
END_EXTERN_C

enum {
    PAUSE_NETPLAY_CONNECT = (1 << 0),
    PAUSE_TOGGLE_FULL_SCREEN = (1 << 1),
    PAUSE_EXIT = (1 << 2),
    PAUSE_MENU = (1 << 3),
    PAUSE_INACTIVE_WINDOW = (1 << 4),
    PAUSE_WINDOW_ICONISED = (1 << 5),
    PAUSE_RESTORE_GUI = (1 << 6),
    PAUSE_FREEZE_FILE = (1 << 7)
};
void S9xSetPause (uint32 mask);
void S9xClearPause (uint32 mask);

#endif