Well, I finally got something I've wanted ever since I saw the first one in
a Radio Shack. The only problem is I get the feeling it doesn't work.
Using the powerbrick from my Tandy WP-2 I was able to turn it on, however,
unless I adjust the contrast up the screen is blank, well, even when
adjusted up, it's blank. Any ideas?
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
This didn't seem to make it out the first time, so here goes a second.
I managed to rescue the PDP-5 that I've "owned" for some time now, but it
was stuck in a far away city. Anyhoo, I've put up the obligatory pictures
at <http://www.mcmanis.com/chuck/computers/pdp5.html> for anyone who cares
to take a peek at it. This uses "DEC System Modules" the pre-cursor to the
DEC Flip Chip technology. It hasn't been powered on in 15 years so I'll be
a bit cautious getting the caps warmed up in the PSU. -15V transistor
logic, wild stuff!
--Chuck
The visual field guide lists it as ??? many other field guides don't list
it at all. It was the answer to question I didn't know to ask. Its a
friggin' dummy load!
If you happen to come across a DEC "skunk box" also know as the BA213
chassis which was home to MicroVAX 3300 - 3900's and some DEC System
5500's, you'll notice it has two power supplies (one on the left and one on
the right). I was restoring a MicroVAX 3400 and thought it had a "bad"
power supply. As it turned out, without sufficient load these power supplys
will not "light up." So to fix that on the 3400 I plugged a Fujitsu SCSI
drive (known power hog :-) on to the disk connector and voila, the thing
worked.
So I've been looking at a couple of 3400's that were used as a cluster and
both of them had M9060 boards installed in the last slot. These boards
provide sufficent load on the supplies to get them to both turn on. _Very_
handy gizmos.
Moral of the story, if you think you have a "bad" BA213 chassis, try
loading up the power supply a bit, and if that works, find one of these
boards and plug it into the last slot!
Another of lifes little mysteries solved.
--Chuck
Hello everyone, I know that there are some bad attitudes regarding eBay, but
I would like to ask this list's help. I have recently updated my links to
specific keywords for eBay auctions and I would ask for anyone who is willing
to help me check them and improve them. Also, I currently do not have links
for collectible software and I would ask for suggestions. DOS and Windows
versions are obvious. I also have just one link each to Haggle and Excite's
auctions, I would ask for any auction suggestions too. I hope to make my site
a central "jumping off" point for these as well as for computer history
related books and recent news and events. Any help is appreciated. Best,
http://www.classiccomputing.com/auctions.html
David Greelish
Publisher
Classic Computing Press
Question, can a DDS1 tape be used in a DDS2 drive to test the drive, or am
I going to have to go out and spend the $$$'s on a tape to test the drive?
Zane
| Zane H. Healy | UNIX Systems Adminstrator |
| healyzh(a)aracnet.com (primary) | Linux Enthusiast |
| healyzh(a)holonet.net (alternate) | Classic Computer Collector |
+----------------------------------+----------------------------+
| Empire of the Petal Throne and Traveller Role Playing, |
| and Zane's Computer Museum. |
| http://www.aracnet.com/~healyzh/ |
It seems like I recall that either AMD or NatSemi still had a compatible
part in production.
--
John Ruschmeyer
jruschme(a)mac.com
> Date: Fri, 28 Apr 2000 21:33:50 -0600
> From: "Richard Erlacher" <edick(a)idcomm.com>
> Subject: What to use as a substitute for the NCR5380??
>
> This is a multi-part message in MIME format.
>
> - ------=_NextPart_000_0014_01BFB159.71DEDD60
> Content-Type: text/plain;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> Do any of you guys know of a code-compatible substitute for the NCR 5380 =
> that's available currently?
>
> Dick
The love affair continues. I ran across a great 1802 instruction summary in
the RCA workshop that presents the CPU instructions in a matrix format
respecting the instruction code's N code sub meaning and have added a scan
to my site at:
http://users.leading.net/~dogas/classiccmp/cosmac/cosmac.htm
;)
- Mike: dogas(a)leading.net
