Did some tests today and it worked fine at 38400 baud.
57600 baud and above failed miserabely.
Used the code that Maestro generates, PIC18F458 at 40 MHz

38400 baud: the calculated speed error is  0.16%
57600 baud: is 0.94% error. 

Is 0.94% too much error?? Or why would it be so terrible result?
(More than 50% of the echoed chrs were random)

> > I've done 115,200 baud reliably on a 18F452 with a 18.43Mhz crystal
> > using HiTech PICC, all interrupt driven.
> > One thing to check is the accuracy of the frequency division for the
> > UART generator.   I figured I could do 115K baud reliable with a 20Mhz
> > crystal (about 3% error), but the EE in charge wanted to have an "exact"
> > frequency division for baud rate accuracy.
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