I guess not.

I had a similar problem with a serial to centronics converter. The
solution is to use handshaking to stop incoming data when you're sending
data from the PIC.
You may need a buffer in case the sender does not react quickly enough to
the handshake (as in my case).
Also you may want to run the pic at a higher speed, that gives you more
headroom to do the encryption.

My converter uses a 16C84 P04 running at 12 Mhz. It handles 57k6 serial
data quite nicely.

Yours,

Ronald



                                             Ronald Leenes
     [==]                                    MacBrick@knoware.nl
  [==] [==]                                  Moesmate 15, 7206 AC Zutphen,
[==] [==] MacBrick, Macintosh enhancements   the Netherlands