From: Ethan Dicks (
Date: 2000-03-15 00:05:16

--- wrote:
>      Hello folks,
>      I have been collecting CBM machines since I got my first 64 some 15 
>      years ago, and have I just added a Commodore PC20-III to my 
>      collection. The machine is capable of runnings it's 8088 chip at 4.77, 
>      7.16 & 9.54 Mhz. Of course it is currently running at 4.77, but I was 
>      wondering if anyone would have access to a diagnostic disk which would 
>      enable me to speed it up a little!! 

On my Colt, there's a key sequence to change the speed.  It might be
<CTRL><SHIFT>T for Turbo and <CTRL><SHIFT>S for Slow or some similar
combination.  It's been long enough that I forget the exact keys.  There
might be an <ALT> in there, too, like <CTRL><ALT>T.  On my machine, if
you get it right, the computer trills a beep at one of two tones - the
higher tone indicates the higher clock speed (CPU delay loop used to
good effect, no doubt).


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vanish, please note my new public address:

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permanent home is:

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