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https://github.com/ekeeke/Genesis-Plus-GX.git
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2b78421402
------ * 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)
32 lines
851 B
C
32 lines
851 B
C
/*
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**
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** File: ym2612.h -- header for ym2612.c
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** software implementation of Yamaha FM sound generator
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**
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** Copyright (C) 2001, 2002, 2003 Jarek Burczynski (bujar at mame dot net)
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** Copyright (C) 1998 Tatsuyuki Satoh , MultiArcadeMachineEmulator development
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**
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** Version 1.4 (final beta)
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**
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*/
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#ifndef _H_FM_FM_
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#define _H_FM_FM_
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/* compiler dependence */
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#ifndef INLINE
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#define INLINE static __inline__
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#endif
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extern int YM2612Init(float clock, int rate);
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extern int YM2612ResetChip(void);
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extern void YM2612Update(short int*buffer, int length);
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extern void YM2612Write(unsigned int a, unsigned int v);
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extern unsigned int YM2612Read(void);
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extern unsigned char *YM2612GetContextPtr(void);
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extern unsigned int YM2612GetContextSize(void);
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extern void YM2612Restore(unsigned char *buffer);
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#endif /* _H_FM_FM_ */
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