>You've already shown that system loading effects the error rate.  Obviously
>that's not a hardware problem.  (There may still be one, however.  Write a
>loop to dump the same character continually and look at everything with a
>scope.)

There is a piece of hardware provided, however to get around this
problem.  If you haven't already, enable the 16550 FIFOs.  It gives you 16
more byte times to play with between reads.  Now, unfortunately, you may
have to write your own terminal program to actually get something that uses
FIFOs, since I think that most terminal programs have them turned off (not
really sure about this, mostly a stab in the dark, but it seems probable to me)

You might also want to implement some framing with CRCs to ensure than you
have correct data, and maybe some kind of sliding frame error correction,
where you can re-request an erroneous frame.

--Brendan

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