X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Fclock.h;fp=src%2Fclock.h;h=cd0afe769a01c8a9a3a72b9a9cff8fdfc28bf668;hb=2ae315f25e623cc8279d3c9012a3a166d86684c2;hp=0000000000000000000000000000000000000000;hpb=920ff84436f9539af4e893ed3857a22a554ffd72;p=virtualjaguar

diff --git a/src/clock.h b/src/clock.h
new file mode 100644
index 0000000..cd0afe7
--- /dev/null
+++ b/src/clock.h
@@ -0,0 +1,28 @@
+//
+// CLOCK.H: System timing support functionality
+//
+// by James L. Hammons
+//
+
+#ifndef __CLOCK_H__
+#define __CLOCK_H__
+
+#include "types.h"
+
+// Note that these are NTSC timings:
+
+#define RISC_CYCLE_IN_USEC     0.03760684198
+#define M68K_CYCLE_IN_USEC     (RISC_CYCLE_IN_USEC * 2)
+#define HORIZ_PERIOD_IN_USEC   63.5555
+
+#define USEC_TO_RISC_CYCLES(u) (uint32)(((u) / RISC_CYCLE_IN_USEC) + 0.5)
+#define USEC_TO_M68K_CYCLES(u) (uint32)(((u) / M68K_CYCLE_IN_USEC) + 0.5)
+
+void InitializeEventList(void);
+void SetCallbackTime(void (* callback)(void), double time);
+void RemoveCallback(void (* callback)(void));
+void AdjustCallbackTime(void (* callback)(void), double time);
+double GetTimeToNextEvent(void);
+void HandleNextEvent(void);
+
+#endif	// __CLOCK_H__