HP 2100A stuff - info needed

From: William Donzelli <william_at_ans.net>
Date: Tue Sep 23 13:01:27 1997

> I also found an HP2100 in a skip (dumpster) about 5 years ago. I was
> allowed to rescue it, and it now sits in my workshop awaiting restoration.
> Alas I got no manuals at all with it.

That is how I found my PDP-8/e.

> Is that the RK05-like thing with one removeable pack and 1 fixed platter?
> If so, I found one too, but the front casting got mangled when it was
> removed from the rack. Alas I didn't get a PSU for it.

Yes, I think so, but I have never opened it up, nor powered it on. It
would be nice if the thing had a permanent disk with useful software on
it.

> > > 2895B Tape Punch #1632A03303 FACIT model 4070
> >
> > Yep, this is a badge-engineered Facit paper-tape punch.

Mine came with some sort of rack mount kit that I have not been able to
comprehend yet. I think I am missing parts.

> > > 2748A Tape Reader #1133A01747 "System Serial 0815F"
>
> Found one of those with the 2100A as well.

Can this thing be used with other stuff? My only good paper tape reader is
in a rack with a PDP-8/s, and my Teletype may be a bit rough on old tapes.
I would like to get something over to RCS/RI, as we have a working PDP-12
that wants software.

> What I don't have is any manuals. I've read the excellent web site, but I
> really need the PSU and system schematics. HP can no longer supply them
> AFAIK.

My sense (i.e. ears) tell me that the power supply is a switching type,
probably one of the first for computers, an is probably a bear to fix. Of
course, all of the house numbered HP parts does not help either.

William Donzelli
william_at_ans.net
Received on Tue Sep 23 1997 - 13:01:27 BST