TTL-JJK@finou.oulu.fi (Jari Kaitera) (01/29/91)
Thanks for all of you who gave me advise with my my datalink. Unfortunately nothing helped. It seems that my computer doesn't like the datalink 200 which is made in Germany by Systech. I know that someone knows how to make a cable to connect the SF-9000 to MAC. But does any of you know if same thing could be done with my 386 33Mhz AT ( I am sure it could ). There seems to be a shareware program for MAC, but how about PC/AT? The connector seems to be pretty easy to make, someone told me it is only a normal null modem cable. Still there seems to be a tiny microchip inside of the datalink connector. Would anyone know what is the order of the pins in the connector? Jari Kaitera, Univ. of Oulu, Finland
scotta@hpcuhd.HP.COM (Scott Anderson) (01/31/91)
The chip is an op-amp (a 741 if my memory serves me right - it was
more than a month ago that I tore the thing apart). The signal coming
out of the BOSS is much less than RS-232 potentials and the op-amp is
used to boost it. The voltages going into the BOSS get dropped as well
(by a switching circuit based on a 2N2222 transistor, as I remember).
My opinion is that the chances of any passive cable (i.e. just rerouting
where the signals go with no modification) working reliably would be
less than the chances of frying the CASIO with such a cable.
If you really need more details, let me know and I'll see if I can
dredge up the notes I took.
Scott Anderson
An RTEsian and proud of it... Hewlett-Packard
Data Systems Operation
scotta@cup.hp.com 11000 Wolfe Rd. MS 42UN
408-447-5219 Cupertino, CA 95014