Path: utzoo!attcan!uunet!know!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hpcvra!rnews!hpcvbbs!akcs.kolstad
From: akcs.kolstad@hpcvbbs.UUCP (Joel Kolstad)
Newsgroups: comp.sys.handhelds
Subject: 600 baud
Keywords: it ain't gonna happen
Message-ID: <27233c5b-3b5comp.sys.handhelds@hpcvbbs.UUCP>
Date: 22 Oct 90 18:40:09 GMT
Lines: 19

Again, to whoever wanted to use an HP-48 with a 600 baud device 
(yet another message that hasn't gotten to this board yet..) --
 
You're not going to do it very easily.  The HP-48 supports baud rates
of 1200, 1920, 2400, 3840, 4800, 7680, 9600, and 15360 baud in
hardware ONLY.
 
With enough programming, you could get a 48 to receive 600 (since
you can access the Rx pin directly)
but as far as I'm aware, you can't access
the Tx pin directly.
 
If you're a real die hard, you CAN access both the infared LED and
phototransistor directly, and perhaps use a circuit and/or software
to turn it's output into RS-232.  But this would be a LOT of work!
 
The only way to get 600 baud in hardware is to change of of the
oscillator frequencies. :-)
 
                                        ---Joel Kolstad