[net.unix] 3b2's on/off switch

plocher@puff.wisc.edu (John Plocher) (11/01/86)

>I have been following the discussion about the 3b2's which switch their own
>power on and off via software-controlled relays or triacs.  (Did anyone in
>netland ever see the Apple Lisas that also did this? ...

    And when you had a software bug and got stuck in a loop with
    interupts disabled (The on/off switch generated an interupt...) you
    couldn't reboot the machine.  If you unplugged the Lisa, you stood a
    large ( >> 50%) chance of trashing your hard disk...  What to do?
    Apple SOON added a hardware reset button!
-- 
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