Has anyone here implemented an application that uses both the on-board UART
and a bit bashed Serial port simultaneously on a PIC ?

My particular interest is not loosing serial data coming in on the port pin
while the on-board UART can receive at any time.
I need to determine how fast the bit bashed serial receive can run when PIC
is running from 20MHz Xtal. (I am using 16F876)

The approach so far is to use RB0 interrupt to capture the Start bit then a
timer to verify start bit at T/2, then sample line every period T x 8 and
finally the stop bit.

Regards

David Huisman

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