[Coco] Kip's Single Board Computer

[Gene Heskett]

On Friday 18 September 2015 20:57:32 RETRO Innovations wrote:

> On 9/18/2015 7:53 PM, Gene Heskett wrote:
> > Next then is to verify that it is indeed running.  A scope able to
> > measure frequency would be the fastest way.  That way you can check
> > both amplitude and get a 5% accurate or better frequency
> > measurement.
> >
> > Cheers, Gene Heskett
>
> That's the point.  It is not running.  Xtal is nearly 5V, and Extal is
> nearly GND.  Q and E show no pulse train.  Scope is a Tek 2465, good
> to 300MHz, and rarely lies.  frequency counter shows 0 Hz.
>
> Vcc shows 5V, Vss shows GND.

Bad rock?  Low Q capacitors?  and the Xtal & Extal voltages should not be 
sitting on the rails.

> Jim
>
>
>
>
> --
> RETRO Innovations, Contemporary Gear for Classic Systems
> www.go4retro.com
> store.go4retro.com


Cheers, Gene Heskett
-- 
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