Date   : Sun, 12 Jul 1987 04:02:12 GMT
From   : poisson.usc.edu!mlinar@OBERON.USC.EDU (Mitch Mlinar)
Subject: Re: cpm

In article <KPETERSEN.12317278993.BABYL@SIMTEL20.ARPA> CBWP8008@IRUCCVAX.BITNET
writes:
>   ....
>the back and can support up to 4 users. I thought that rainbow(also
>cpm86) kermit might work on this so i hexified it and transfered to
>the systime and it worked... sort of. The program ran but the data
>didn't seem to be coming out of any of the ports in the back of the
>machine.
>
>what i want to know is if there is any way of defining a
>communications channel in cpm (as you can see i know very little about

Sorry, Ian, but CP/M lacked a REAL generic interface to a serial port.
All modem software for CP/M is hardwired for a given port at some point
or another; nearly all BIOSes have no provision for it.  The rainbow software
is operating on another port.

There may be hope, however, since many modem programs (early ones) have a
few bytes you can "ding" to change the port # to the proper value.  You
WILL need SOME information about that machine (I never heard of it) as well
as the program to figure out where to ding it.  (Or, if you know the port
information, any PD modem program could have an overlay written for it and
that would also solve your problem.) Otherwise, a good CP/M hacker could
find it for you, but it would take a little time...

Good luck.

-Mitch