Reset switch for IBM 5150/5160?

Tom Peters tpeters at mixcom.com
Sun Mar 27 19:52:59 CST 2005


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/
>Want to help an ambitious games project?             http://www.mobygames.com/
>Or check out some trippy MindCandy at             http://www.mindcandydvd.com/


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