I did a project with a bit banged uart on a 16f630 (1200bps). My second
chip gave me serial errors, but I then discovered I needed to manually set
the oscillator cal value (code below). After that, a bunch of systems have
worked fine.

        Bank1
	call 	3FFh 				;Get the cal value
	movwf 	OSCCAL ;Calibrate
        Bank0


Harold

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