If you check the diagrams on page
36 and 37 of DS40300B (the 16F62X
data sheet), you'll see that there is
a multiplexer (near the top) controlled
by the "PORT/PERIPHERIAL" signal, that
effectivily disables the output from the
"Data Latch".

So it would be "safe" to write any
value to the PORTB register (the Data Latch),
as far as I can see.

Jan-Erik.

John De Villiers  wrote:

> Will i inject the wrong values into the uart by writing to the port or
> will the uart ignore my writes to the rx and tx bits (those bits will
> always be zero in the buffer )?

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