Genesis-Plus-GX/source/sound/ym2612.h

/*
**
** File: ym2612.h -- header for ym2612.c
** software implementation of Yamaha FM sound generator
**
** Copyright (C) 2001, 2002, 2003 Jarek Burczynski (bujar at mame dot net)
** Copyright (C) 1998 Tatsuyuki Satoh , MultiArcadeMachineEmulator development
**
** Version 1.4 (final beta)
**
*/

#ifndef _H_FM_FM_
#define _H_FM_FM_

/* compiler dependence */
#ifndef INLINE
#define INLINE static __inline__
#endif


extern int YM2612Init(float clock, int rate);
extern int YM2612ResetChip(void);
extern void YM2612Update(long int *buffer, int length);
extern void YM2612Write(unsigned int a, unsigned int v);
extern unsigned int YM2612Read(void);
extern unsigned char *YM2612GetContextPtr(void);
extern unsigned int YM2612GetContextSize(void);
extern void YM2612Restore(unsigned char *buffer);

#endif /* _H_FM_FM_ */
2007-08-10 22:34:06 +02:00			`/*`
restored from bountysource 2008-08-07 14:26:07 +02:00			`**`
~fixed VDP bug from last revision ~updated DOS & WIN32 ports to reflect recent changes 2009-06-02 20:12:31 +02:00			`** File: ym2612.h -- header for ym2612.c`
restored from bountysource 2008-08-07 14:26:07 +02:00			`** software implementation of Yamaha FM sound generator`
			`**`
			`** Copyright (C) 2001, 2002, 2003 Jarek Burczynski (bujar at mame dot net)`
			`** Copyright (C) 1998 Tatsuyuki Satoh , MultiArcadeMachineEmulator development`
			`**`
			`** Version 1.4 (final beta)`
			`**`
2007-08-10 22:34:06 +02:00			`*/`
restored from bountysource 2008-08-07 14:26:07 +02:00
2007-08-10 22:34:06 +02:00			`#ifndef _H_FM_FM_`
			`#define _H_FM_FM_`

			`/* compiler dependence */`
			`#ifndef INLINE`
			`#define INLINE static __inline__`
			`#endif`


[Core] ------ * improved 68k accuracy (initial reset timing + auto-vectored interrupts handling). * modified Z80 & 68k cores to directly use external cycle count instead of intermediate counters. * improved Z80 & 68k cpu execution/synchronization accuracy, now use Master Clock as common clock reference. * improved PSG & FM chips synchronization with CPU execution (fixed point precision). * completely rewrote sound output processing & mixing: sound chips are now clocked with exact output frame rate to ensure 100% smooth video & audio playback, with no lag or skipping, while still rendering an accurate number of samples per frame. This will also make fast-forward implementation (video AND sound) more trivial. * improved color accuracy in VDP highlight mode to match results observed on real hardware. * improved sprites processing timing accuracy: fixes (un)masked sprites in Mickey Mania (3D level), Sonic 2 (VS mode). * improved horizontal blanking & HINT/VINT occurrence timing accuracy, as measured on real hardware. * improved H-Counter accuracy in 40-cell mode, as measured on real hardware. * optimized Z80 bus status signals * usual code cleanup [GCN/WII] --------- fixed ASNDLIB exit when returning to game fixed audio/video startup sync modified audio back-end engine according to new audio processing core (see above) 2010-01-24 12:41:53 +01:00			`extern int YM2612Init(float clock, int rate);`
restored from bountysource 2008-08-07 14:26:07 +02:00			`extern int YM2612ResetChip(void);`
added USB2 support through Hermes IOS202 (mload) 2010-04-23 14:31:07 +02:00			`extern void YM2612Update(long int *buffer, int length);`
[-]removed Gens YM2612 core support [~]fixed YM2612 context restore [+]improved YM2612 emulation accuracy (BROKEN) 2009-02-25 17:53:28 +01:00			`extern void YM2612Write(unsigned int a, unsigned int v);`
			`extern unsigned int YM2612Read(void);`
			`extern unsigned char *YM2612GetContextPtr(void);`
			`extern unsigned int YM2612GetContextSize(void);`
[~]fixed ym2612 context restore [~]small fixes to SSG-EG emulation (should be finally fine !) 2009-02-28 18:49:31 +01:00			`extern void YM2612Restore(unsigned char *buffer);`
2007-08-10 22:34:06 +02:00
			`#endif /* _H_FM_FM_ */`