I'm building a Wisp628, and just realized that my parts drawer contains 
only 4MHz 16F628 chips, although I do have some 20MHz 16F628A parts. 
Although the Wisp628 specifies the '628 chip, I don't see enough 
difference between the 628 and 628A to suggest that I couldn't use the 
628A to control the Wisp.  At least it looks like a good bet it'd work.

Anyone know any reason why that wouldn't work?

TIA,
steve
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