Ah, front panel switches !! Reminds me of our first mini-computer, with a programmers front-panel Our FD discovered that he could re-boot/crash it by shuffling his feet on the carpet and then 'zapping' the front panel with his finger - wonderful stuff static! Tim -- Gllug mailing list - Gllug at gllug.org.uk http://lists.gllug.org.uk/mailman/listinfo/gllug