2 // EVENT.H: System timing support functionality
12 #define RISC_CYCLE_IN_USEC 0.03760684198
13 #define M68K_CYCLE_IN_USEC (RISC_CYCLE_IN_USEC * 2)
15 #define HORIZ_PERIOD_IN_USEC_NTSC 63.555555555
16 #define HORIZ_PERIOD_IN_USEC_PAL 64.0
18 #define USEC_TO_RISC_CYCLES(u) (uint32)(((u) / RISC_CYCLE_IN_USEC) + 0.5)
19 #define USEC_TO_M68K_CYCLES(u) (uint32)(((u) / M68K_CYCLE_IN_USEC) + 0.5)
21 void InitializeEventList(void);
22 void SetCallbackTime(void (* callback)(void), double time);
23 void RemoveCallback(void (* callback)(void));
24 void AdjustCallbackTime(void (* callback)(void), double time);
25 double GetTimeToNextEvent(void);
26 void HandleNextEvent(void);