I have a very strong suspicion that the answer to this is going to be 'no',
but I figured I'd do due diligence and ask...
I have a backplane (one of the rodent barn group) which has a couple of finger
contacts in the backplane missing. (Two came out while I was cleaning it - and
I wasn't being hard on them, they must have been eaten away by the same kind
of chemical action that lifted traces off the boards.)
Is there any way to replace broken/missing finger contacts? I would _guess_
'no', since it looks like the backplane blocks (the things cast out of dark
green plastic, which looks like Bakelite - anyone know exactly what it is,
BTW?) are cast around them (since there's a wire-wrap pin on one side, and a
finger contact on the other).
If the answer _is_ 'no', no biggie - all except one are on one SPC slot, and
it's a 9-slot backplane, so we'd lose one SPC slot - not the end of the world.
The other pin is in the UNIBUS in/out area (1/9AB), _but_ the antique hardware
gods are smiling on us, it's a ground pin (of which the UNIBUS connector
pinout has multiple, so we can probably withstand the loss of one).
Thanks in advance for any help!
Noel
A new AT&T video out today showing their (at the time, the Bell
System's) internal CAD and messaging system, TOPES:
https://www.youtube.com/watch?v=VKbFM770dus
Not a lot of info out there about it but it appears to have run on
DEC-10 machines. There are a none of those to be seen in the video
but there are a few AT&T/Teletype Dataspeed and Tektronix terminals.
Interesting early collaboration system that probably never left Bell -
did anyone here work with it?
-j
Accepting best offer for a PDP 11/44 located in Landenberg, PA. Pickup or
your arrangements to have shipped ONLY. I am not going to ship this thing.
I have not powered it on - first I would need to remove the deteriorated
foam behind the front grill and get a 220 adapter (i.e. clothes dryer
plug).
http://vintagecomputer.net/digital/PDP11-44_2nd/
The cabinet has a little rust on the outside but the computer backplane
itself is in pretty nice shape and the module set appears complete. The
inside bottom of the cabinet is dirty but by and large it's pretty nice.
The cabinet has two tape drive bays in the front and a tape drive inside
that I assume to be inoperable, the capstan roller appears to be
deteriorated.
Happy to answer questions here but I prefer private contact/bids/questions
to - http://vintagecomputer.net/contact.cfm
thanks
Bill
Here's the list of equipment.
I also have the keyboards, mice, cables, media, manuals, etc.
Hardware Model
Number Serial Number Comments
AXP 3000 Model 500S D5-PE500-AB
AB2420476G very heavy (~55 lbs?)
(internal boards were static bagged separately from system
when moved from original location at work)
MicroVAX 3100 DV-31ATB-B-A01
KA037D0073 - no other details -
DEC Concentrator (FDDI) DEFCN-BC
AS24103079 1 - 4 Port card and cables
DEC FDDI Controller (PCI) DEFPA-UA
TA52900037 never used, w/ driver disk
DEC FDDI Controller (PCI) DEFPA-UA
TA55000002 never used, w/ driver disk
VT320 Amber monitor TA927Y4967 (?)
59333248 - in VERY GOOD condition -
VRT19 Color monitor VRT19-HA Rev B01
IS336820281 very heavy (~78 lbs?)
.
I cannot ship anything, if you can't pick it up at my house, you'll have to
pay shipping.
Let me know.
Hi all,
I've got a VAX4000/300 lately to save it from the dumpster.
I've cleaned the machine an powered up. It taked several tries
to get the PSU working stable, it shut off itself the first ~10 tries
but works stable now.
(Yes I know all about forming electrolytic caps but have my own point of
view regarding supplying under voltage to switching psu's)
The machine is doing the Post until the final displayed letter "3" in
the LED Display.
The machine is equipped with 64MB RAM, an KA670, and on the QBUS with the
KZQSA DSSI and the TK70 Controllers and additional am CMD CQD200.
Disks are 2x RF31 one RF71 and a TK70.
I currently have no console device connected to the machine, must crimp a
MMJ cable first..
The Problem ist, that one of the RF31 Disks doesnt go to ready and the
Fault LED lights up.
What can I do to further investigate the Drive fault?
Are DSSI disks starting up themselves after applying Power and ACLO or
has the controller to supply a spindle start command?
re those disks known to have sticking heads sometimes?
I would do some test on the drive w/o the machine since I don't have any
test equipment in the room where the machine now is..
Any hints?
If anyone has a spare RF31 or RF71 (or similar) to sell or additional MS670
memory for an hobbyist price, please mail me. I'm in germany, europe.
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741
I'd like to thank everyone who responded to my recent post about my computer board collection. The amount of interest is much greater than I had expected, so it has been taking me a little bit of time to sift through emails and contact everyone.
If you have not heard from me by now, I've made an error and overlooked you. Please accept my apologies and send me another query.
Let me reiterate--I have no asking price for these assets--I have no idea what they're worth and I'm happy that they're going into the hands of people who will appreciate them.
If you are interested in specific cards, please make an offer. There is more interest than there are cards, so the only fair way I can distribute them is on the basis of the offers.
Regards and 73,
Pete
AC7ZL
What a beauty! Congrats folks!Ed#
Sent from my Verizon Wireless 4G LTE smartphone
-------- Original message --------
From: Michael Thompson <michael.99.thompson at gmail.com>
Date: 05/12/2015 4:30 PM (GMT-07:00)
To: cctech <cctech at classiccmp.org>
Subject: Re: PDP-12 Restoration at the RICM
>
> Date: Mon, 11 May 2015 10:17:41 -0700
> From: "Kirk B Davis" <kirkbdavis at hush.com>
> Subject: Re: PDP-12 Restoration at the RICM
>
> Pictures?? :-)
>
http://www.ricomputermuseum.org/Home/equipment/dec-pdp-12
--
Michael Thompson
It seems over the years I acquired more than a just a few of these (two
types of) boards for the HP1000. I'm pretty certain they all came from a
batch of about twenty HP 1000 series systems I got that were decommissioned
>from military use. They do not seem to be HP in origin, and I don't have any
clue what they are for. Mostly they seem to be stuffed with large numbers of
op amps and some line drivers. Perhaps just flight line testing or ATP?
If no one thinks these are of any use. they will be scavenged for bus driver
chips. But I'd hate to do that if they might be historical or "interesting".
A few pictures of each board are at www.ezwind.net/hp-unk
I tossed in the "-" because hpunk just looked wrong ;)
Educated guesses?
J
>
> Date: Mon, 11 May 2015 17:57:44 +0200
> From: Pontus Pihlgren <pontus at Update.UU.SE>
> Subject: Re: PDP-12 Restoration at the RICM
> On Mon, May 11, 2015 at 09:36:17AM -0600, Doug Ingraham wrote:
> > I have read that there was a device that allowed an 8/I to be interfaced
> to
> > Omnibus memory and some machines were sold this way but I have never seen
> > one.
> >
>
> I've sen one :) which is why I wondered. I've also heard of a
> straight-8 with omnibus memory.
>
> /P
>
Its called a BM812. Prints on Bitsavers at:
/pdf/dec/pdp8/omnibus/BM812-I_EngrDrws_Jun75.pdf
--
Michael Thompson
