Will 'btfss RXREG, n' make 16F628 USART RGREG as read?
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> But BTFSS/BTFSC never *store* anything back, do they ?
Don't think so. The question is - does a fetch qualify as a read, as
Microchip would define it, in the context of a UART ?
Or say you used MOVFF RCREG,RCREG. On the face of it
that would appear to be a read, although nothing's changed or
gone anywhere. At one level. It did pass through the processor
See also: www.piclist.com/techref/microchip/ios.htm?key=usart
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