Well, I've fried 'em, reversed the power supply polarity on 'em, powered
things that overtaxed the port, and had PIC's come through, but this one
takes the cake.    I've got a PIC here that lost a bus fight, port RB2 tried
to go low when it was connected to 5V through a solder bridge.  The rest of
the PIC went merrily about it's way, but port RB2 was transmogrified into a
permanent 14 ohm resistor.    I could hook the circuit up to my 5V power
supply, where it drew some 350 mA, but the rest of the PIC chugged along,
lighting it's LEDs and firing it's relays like nothing was wrong.  As soon
as I put the circuit in my application, the board's power supply (which was
designed to provide a few milliamps) wimped out, and nothing would happen.
A PIC can work just fine after one of it's port pins commits kamakaze.

Devilishly hard to troubleshoot though.  "It works fine over here on the
bench, but as soon as I install it in a unit it croaks --?&%$#!!!"




-- Lawrence Lile
Sr. Project Engineer
Salton inc. Toastmaster Div.
573-446-5661 Voice
573-446-5676 Fax

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