make the appropriate audio devices

src/etc/etc.i386/MAKEDEV

@@ -1,6 +1,6 @@
 #!/bin/sh -
 #
-#	$OpenBSD: MAKEDEV,v 1.57 1998/03/24 19:00:27 marc Exp $
+#	$OpenBSD: MAKEDEV,v 1.58 1998/04/27 14:50:38 provos Exp $
 #	$NetBSD: MAKEDEV,v 1.40 1996/03/31 00:50:47 perry Exp $
 #
 # Copyright (c) 1990 The Regents of the University of California.
@@ -517,12 +517,20 @@ mouse*)						# (XXX)
 	;;
 
 audio*)
-	rm -f audio sound mixer
-	mknod sound c 42 0
-	mknod audio c 42 128
-	mknod mixer c 42 16
-	chown root.wheel audio sound mixer
-	chmod 666 audio sound mixer
+	unit=${i#audio}
+	audio=audio$unit
+	sound=sound$unit
+	mixer=mixer$unit
+	major=42
+	audioctl=audioctl$unit
+	if [ "$unit" = "" ]; then unit=0; fi
+	rm -f $audio $sound $mixer $audioctl
+	mknod $sound    c $major $(($unit + 0))
+	mknod $audio    c $major $(($unit + 128))
+	mknod $mixer    c $major $(($unit + 16))
+	mknod $audioctl c $major $(($unit + 192))
+	chown root.wheel $audio $sound $mixer $audioctl
+	chmod 666 $audio $sound $mixer $audioctl
 	;;
 
 joy*)