--- ray/src/hd/rholo.c	1997/12/16 15:45:55	3.29
+++ ray/src/hd/rholo.c	1997/12/22 11:06:53	3.32
@@ -88,6 +88,8 @@ char	*argv[];
 			goto userr;
 		}
 						/* get root file name */
+	if (i >= argc)
+		goto userr;
 	rootname(froot, hdkfile=argv[i++]);
 						/* load variables? */
 	if (i < argc)
@@ -262,20 +264,21 @@ memerr:
 
 rholo()				/* holodeck main loop */
 {
-	static int	idle = 1;
+	static int	idle = 0;
 	PACKET	*pl = NULL, *plend;
 	register PACKET	*p;
 	time_t	t;
 	long	l;
-
-	if (outdev != NULL)		/* check display */
-		if (!disp_check(idle))
-			return(0);
-					/* display only? */
-	if (nprocs <= 0) {
+					/* check display */
+	if (nprocs <= 0)
 		idle = 1;
-		return(outdev != NULL);
-	}
+	if (outdev != NULL) {
+		if (!disp_check(idle))
+			return(0);	/* quit request */
+		if (nprocs <= 0)
+			return(1);
+	} else if (idle)
+		return(0);		/* all done */
 					/* check file size */
 	if (maxdisk > 0 && hdfilen(hdlist[0]->fd) >= maxdisk) {
 		error(WARNING, "file limit exceeded");
@@ -488,7 +491,7 @@ PACKET	*pl;
 		p->next = freepacks;
 		freepacks = p;
 	}
-	if (n2flush > 512*RPACKSIZ*nprocs) {
+	if (n2flush > 1024*RPACKSIZ*nprocs) {
 		hdflush(NULL);			/* flush holodeck buffers */
 		n2flush = 0;
 	}