osCreateViManager

Function

osCreateViManager

Creates VI manager

Syntax

#include <ultra64.h>        /* os.h */
void osCreateViManager(OSPri pri);

Arguments

pri

Priority(Normally, use OS_PRIORITY_VIMGR)

Return Value

None.

Description

The VI manager is a system thread that must be created and invoked at the beginning of the application. To do this, call osCreateViManager() for the VI manager to allow vertical retrace interrupt to occur at an early stage. Usually, this priority should be set to OS_PRIORITY_VIMGR. The VI manager is designed to service both the VI interrupt (OS_EVENT_VI) and CPU counter interrupt(OS_EVENT_COUNTER) in the most efficient manner. Each interrupting event can be performed using osViSetEvent or osSetTimer.

Example

//	Launch VI Manager & black out
	osCreateViManager(OS_PRIORITY_VIMGR);
#if (SCREEN_WD==320)&&(SCREEN_HT==240)		// Settings for low-resolution
	osViSetMode(&osViModeNtscLan1);
#elif (SCREEN_WD==640)&&(SCREEN_HT==480)	// Settings for high-resolution
	osViSetMode(&osViModeNtscHaf1);
#else
#error	"Illegal Screen size"
#endif
	osViBlack(TRUE);

See Also

osViSetEvent, osSetTimer