[comp.sys.handhelds] Interface cable for the NeXT

scd@math.ufl.edu (Steve C Donahue) (03/29/91)

I am the happy new owner of a NeXT cube.  I have had my HP48 for quite some
time now.  I managed to build an interface cable to connect my HP to my old
crippled IBM PC/XT.  However, I am wondering if a cable exists in the
following flavor: NeXT<->HP48.  If so, where?  Would a Mac<->HP48 cable
work?  I would just like to avoid building another cable.  I am a software
guy and you know how the saying goes...  The three most dangerous things in
the world are a hardware type with a program patch, a programmer with a
soldiering iron, and a user with an idea :-)  Thanks in advance.

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 Steve Donahue                        Internet: scd@cis.ufl.edu
 CIS Engineering      	              NeXTmail: pending
 University of Florida

andrew@jhereg.osa.com (Andrew C. Esh) (04/04/91)

In article <SCD.91Mar28162257@timaeus.math.ufl.edu> scd@math.ufl.edu (Steve C Donahue) writes:
>
[stuff deleted]
>crippled IBM PC/XT.  However, I am wondering if a cable exists in the
>following flavor: NeXT<->HP48.  If so, where?  Would a Mac<->HP48 cable
>work?  I would just like to avoid building another cable.  I am a software
[stuff deleted]

Yes, the Mac cable works. I use one all the time. EduCalc has them, their
phone number is 1-800-633-2252, and the part number is #82209AW for the
cable only. The Interface kit includes a Mac disk of software that won't
run on the NeXT.
To get it running, plug it into port A or port B on the back of the
motherboard card, and use kermit set at 9600 baud to talk to /dev/ttya or
/dev/ttyb. I find it easiest to set up a send on the NeXT and then operate
the receive on the 48sx manually. I tried the server mode on the 48sx, but
I ran into a few problems and gave up. I forget what the problems were.
Otherwise it works great. Be sure to set the 48sx for binary, 8, no parity,
and 1 stop bit.

>
> Steve Donahue                        Internet: scd@cis.ufl.edu
> CIS Engineering      	              NeXTmail: pending
> University of Florida


-- 
Andrew C. Esh			andrew@osa.com
Open Systems Architects, Inc.	
Minneapolis, MN 55416-1528	So much System,
(612) 525-0000			so little CPU time...

madler@nntp-server.caltech.edu (Mark Adler) (04/04/91)

In article <1991Apr3.164149.19643@jhereg.osa.com> andrew@jhereg.osa.com (Andrew C. Esh) writes:
>/dev/ttyb. I find it easiest to set up a send on the NeXT and then operate
>the receive on the 48sx manually. I tried the server mode on the 48sx, but
>I ran into a few problems and gave up. I forget what the problems were.

I have had no problems whatsoever using the server mode on the 48 from
my NeXT, or vice-versa (using the server mode on the NeXT from 48).  I
am using version 5A(165) of kermit, but it worked fine when I was using
version 4E of kermit as well.

Mark Adler
madler@pooh.caltech.edu