32 lines
931 B
C
32 lines
931 B
C
//
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// TIMING.H: System timing support functionality
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//
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// by James L. Hammons
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// (C) 2005 Underground Software
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//
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#ifndef __TIMING_H__
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#define __TIMING_H__
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#include <stdint.h>
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// Note that these are NTSC timings:
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//#define RISC_CYCLE_IN_USEC 0.03760684198
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//#define M68K_CYCLE_IN_USEC (RISC_CYCLE_IN_USEC * 2)
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//#define HORIZ_PERIOD_IN_USEC 63.5555
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#define M6502_CYCLE_IN_USEC 0.9765625
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//#define USEC_TO_RISC_CYCLES(u) (uint32_t)(((u) / RISC_CYCLE_IN_USEC) + 0.5)
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//#define USEC_TO_M68K_CYCLES(u) (uint32_t)(((u) / M68K_CYCLE_IN_USEC) + 0.5)
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#define USEC_TO_M6502_CYCLES(u) ((uint32_t)(((u) / M6502_CYCLE_IN_USEC) + 0.5))
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void InitializeEventList(void);
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void SetCallbackTime(void (* callback)(void), double time);
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void RemoveCallback(void (* callback)(void));
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void AdjustCallbackTime(void (* callback)(void), double time);
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double GetTimeToNextEvent(void);
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void HandleNextEvent(void);
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#endif // __TIMING_H__
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