> What is the frequency Kenneth? :)
>
> Seriously, you left out one important detail in your message -- the Fosc
you
> are supplying to the PIC:

Afte a few more tests, I have a little bit more information. I was using the
HS osc. 4MHz.
With the 16f877a, I wasn't successfull at al. With the 18f242, same thing,
80% of bytes in framing error. Then I tried using the HSPLL osc and changed
the frequency to 16MHz. The framing errors dropped considerable to around
20% of bytes with error, but still, I want no byte in error.

Finally, I tried the basics, changed frequency back to 4Mhz and the XT osc.
and tried communicating at 2400, GOT IT!
Then I started climbing the baud rate, 4800, 9600 and 19200. 38400 and bang!
Framing error again.

Do you think it possible to achieve baud rates higher than 38400 with a 4MHz
crystal? My crystal board has this 4MHz crystal and it doesn't look like
it's something easy to replace, but I don't care because I'm starting to
build the first prototype, and then my concern is what crystal to get in
order to achieve baud rates of 57600 and even higher?


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