akcs.kolstad@hpcvbbs.UUCP (Joel Kolstad) (10/23/90)
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 Kolstadprestonb@hpcvra.CV.HP.COM (Preston Brown) (10/23/90)
>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. You can access the Tx pin by sending out a series of correctly timed breaks. Preston