depends on the baud rate, timing errors at 1200 might never be noticed but
at 9600 could be critical.

michael


-----Original Message-----
From: Bill Kennedy <hue@FRONTIERNET.NET>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Saturday, April 11, 1998 12:14 AM
Subject: 12c5xx internal ocs


>Fellow Pic'rs,
>    Has anyone messed with the OSCCAL register in that, is it possible to
>set the operating frequency to something known with some kind of precision?
>The data book says 4MHz nominal, but with the calibration register, how
>close to nominal can you get?  Can this be used for receiving rs-232, or
>might a crystal be more proper?
>
>Thanks for any input.
>