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/* sleep.h */

#define	CVECTOR	0x0078		/* location of clock interrupt vector	*/

extern	int	clkruns;	/* 1 iff clock exists; 0 otherwise	*/
				/* Set at system startup.		*/
extern	int	clockq;		/* q index of sleeping process list	*/
extern	int	count6;		/* used to ignore 5 of 6 interrupts	*/
extern	int	*sltop;		/* address of first key on clockq	*/
extern	int	slnempty;	/* 1 iff clockq is nonempty		*/

extern	int	defclk;		/* >0 iff clock interrupts are deferred	*/
extern	int	clkdiff;	/* number of clock clicks deferred	*/
extern	int	clkint();	/* clock interrupt handler		*/

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