--- xinu/sys/sleep10.c	2018/04/24 17:39:02	1.1
+++ xinu/sys/sleep10.c	2018/04/24 17:39:16	1.1.1.2
@@ -11,22 +11,25 @@
  *------------------------------------------------------------------------
  */
 SYSCALL	sleep10(n)
-	int n;
+	int	n;
 {
-	PStype ps;
-
+#ifdef	DEBUG1
+	dotrace("sleep10", &n, 1);
+#endif
 	if (n < 0  || clkruns==0)
 		return(SYSERR);
-        disable(ps);
-	if (n == 0) {			/* sleep10(0) -> end time slice	*/
-		;
-	} else {
-	        insertd(currpid,clockq,n);
-		slnempty = TRUE;
-		sltop = (short *) & q[q[clockq].qnext].qkey;
-	        proctab[currpid].pstate = PRSLEEP;
+	if (n == 0) {
+	        disable();
+		resched();
+		restore();
+		return(OK);
 	}
+        disable();
+        insertd(currpid,clockq,n);
+	slnempty = TRUE;
+	sltop = &q[q[clockq].qnext].qkey;
+        proctab[currpid].pstate = PRSLEEP;
 	resched();
-        restore(ps);
+        restore();
 	return(OK);
 }