Reset switch for IBM 5150/5160?
fernande at internet1.net
Sat Mar 26 14:56:36 CST 2005
Dave Dunfield wrote:
>>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.
Oh Yeah, Muellers book did suggest a small resisiter.... 1/4 watt
between 1K ohms and 2.7K ohms.
More information about the cctalk