Reset switch for IBM 5150/5160?

[Dave Dunfield]

>Find the 8284a (82284 in the AT) timer chip in the PC.  When pin 11 is 
>shorted to ground momentarily it will start the reset process.  Also 
>shorting the "power good" line from the power supply will do the same 
>thing.  The power good pin is supposed to be P8-1.

I recall at one time having an original IBM PC/AT with a reset switch
wired to ground the "power good" line. It worked fine, and was still
working when I got rid of it ... I don't know if all power supplies
would tolerate this - might be a good idea to put a small resistor in
series with the PS output so that you are not shorting it directly.

Regards,
-- 
dave04a (at)    Dave Dunfield
dunfield (dot)  Firmware development services & tools: www.dunfield.com
com             Collector of vintage computing equipment:
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