New Acquisitions! (HP2000) - test-drb@ccmp.vtda.org

24 Jul 1999

You're right, it's a 4070. Any clue how to tell if it really is serial vs.
parallel?

Thanks!

jay West
-----Original Message-----
From: Tony Duell &lt;ard(a)p850ug1.demon.co.uk&gt;
To: Discussion re-collecting of classic computers
&lt;classiccmp(a)u.washington.edu&gt;
Date: Friday, July 23, 1999 6:52 PM
Subject: Re: New Acquisitions! (HP2000)

...
   A Facit RS-232
paper tape punch (don't recall the model offhand, but it's
 rackmount) 
Probably 4070s. They are used on just about all old minis...

Are you sure they're RS232, though. There is an RS232 interface for the
4070, but it's not common. Most of them have a parallel interface also on
a DB25-S connector. It's close to Centronics, but some of the signals are
inverted.

-tony