I respectfully disagree that an emulator is going to be slower than actual
hardware. After all, a 3GHz P4 can burn a lot of cycles per emulated
instruction and still have plenty to spare. :-) Take a look at simh
(http://simh.trailing-edge.com), where you'll find not only emulated PDP-11s
but also numerous other vintage systems, together with OS software to run on

I encourage you to continue your search for at least one actual system, if
for no other reason than to reinforce aspects of this history that you just
don't get from an emulator - like the idea that the CPU isn't just one chip,
it's four boards full of chips! Good luck -- Ian

-----Original Message-----
From: Info-PDP11-Bounce@dbit.com [mailto:Info-PDP11-Bounce@dbit.com] On
Behalf Of Zane H. Healy
Sent: Thursday, June 05, 2008 8:45 AM
To: dave@mynatt.biz; Info-PDP11@dbit.com
Subject: Re: Assistance

At 9:03 AM -0600 6/5/08, D. Mynatt wrote:
>I'm the program director for a non-profit in Colorado and I am looking
>for a PDP-11 that we could use to train and introduce students to early
>computing systems. I know PCs are available and used instead, but I
>was hoping someone may have a surplus, give away
>PDP-11 or other mini-mainframe that we could pick up and cart away.
>I see that at one time you had a couple surplus units, and I was
>hopeful they may still be available.
>I'm not sure such a thing exists, but if I don't ask I'll never know
>and it would be a great addition to our program if we could get one.
>I used a PDP-11/45 when I worked for AT&T and thing if I could load an
>OS and a compiler of some type it would be a great learning tool.
>Thank you for your consideration and if you don't know of something
>free to a non-profit, I would be most appreciative if you could refer
>me on to someone. I'd appreciate your help.

This is actually an email list. Though I seem to recall at some point
someone in Colorado looking to get rid of stuff.

As a non-profit I'm not sure what your OS options will be (there is always
UNIX). You might want consider taking a look at emulating a system rather
than running on real hardware. The downside of emulation for something like
this is that it is quite a bit slower and you can't put your hands on the
hardware. The following will help point you in the right direction should
you choose to go the emulation route.

If you go the hardware route, take what you can get when you can get it,
soon you'll have enough to put together a working system. Also, even though
you're interested in a PDP-11, a Q-Bus based MicroVAX can be useful in
getting the PDP-11 running since the disk controllers tend to work on both
Q-Bus based PDP-11's and MicroVAXen.


| Zane H. Healy | UNIX Systems Administrator |
| healyzh@aracnet.com (primary) | OpenVMS Enthusiast |
| MONK::HEALYZH (DECnet) | Classic Computer Collector |
| Empire of the Petal Throne and Traveller Role Playing, |
| PDP-10 Emulation and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |