27 Mar
2005
27 Mar
'05
5:52 p.m.
Not too hard. I used to do this all the time. The clock chip actually has a
reset input pin. We used to just slam it to the ground rail but that was
slightly destructive-- better to ground it through a 100 to 500 ohm
resistor or so.
For AT class machines, the clock chip is an 82284 (18-pin dip). For the
5150 I think it's a 8284. Either way, the reset pin is # 11. In a pinch, I
used to used the tip of a screwdriver to short it to the next (pin 10) pin.
At 11:50 AM 3/26/2005 -0600, you wrote:
Has anyone ever wired up a reset button/switch for
their IBM PCs? I find
myself powering down-then-up my 5150 three times a day when all it needs
is a hard reset to reboot a hung machine. I've searched the web and
usenet archives for such a design or specs but haven't found anything. If
I could soldier a few wires to a pushbutton, I feel like I would less
harsh to the machine...
Or, does it not really matter? Is it not a big deal to power down, then
power up (after 5 second delay) a 5150 or 5160? I know IBM PCs were built
well, but I am unwilling to find out *how* well :)
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
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of enthusiasm." -- Sir Winston Churchill
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