>But that makes no sense, since both the 16F88 and 16F648A have a UART.

I couldn't find this earlier, but upon second look, it does, which
you're right, there is no reason for me to use the F88
Other than the fact that I have one. And I can't find any sources to get
one at this short notice, though I will order some

Meanwhile, where can I find this "documented migration path" from 84A to
648A?

Any other ideas why this F88 hasn't worked? 

Thanks everyone
--Josh
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