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Path: utzoo!linus!philabs!cmcl2!seismo!hao!hplabs!tektronix!uw-beaver!ubc-vision!mprvaxa!tbray
From: tbray@mprvaxa.UUCP (Tim Bray)
Newsgroups: net.unix-wizards
Subject: But VAXes HAVE flashing lights...
Message-ID: <568@mprvaxa.UUCP>
Date: Mon, 25-Jun-84 10:22:32 EDT
Article-I.D.: mprvaxa.568
Posted: Mon Jun 25 10:22:32 1984
Date-Received: Sat, 30-Jun-84 01:37:46 EDT
Organization: Microtel Pacific Research, Burnaby BC
Lines: 4

On the third and fourth CPU boards from the left, on 780s. They flash 
revealingly when I/O to/from the floppy is going on.  If you had ever
installed buggy updates to a certain DEC OS that runs on VAXes, you'd
know about this.