Hello list,
Paul Anderson and myself are trying to figure out the available cabling options
that allow to connect an RK611 controller to RK06/RK07 drives.
To my knowledge, there is the possibility to get a drive connect via:
RK611 <-> flat cable <-> cabinet transition bracket <-> round cable
Hello everybody,
recently, there was an US epay auction with a CDC 849 disk pack.
http://www.ebay.com/itm/292129988099
This pack is for the early CDC 851/852 disk storage drives and thus not of
interest for me, as the packs I am looking for my 854 drive have a different
amount of sectors
Hello Al,
>> The surfaces of the disk packs of type 9871 or 871 that came with it where
>> corroded and are not usable anymore.
>
>Did you keep them?
>
>The platters can be replaced with ones from the single-platter IBM 2315 (ie.
>RK05) and use similar head technology which is pretty rugged.
>eBay: MEMOREX 3693-2 & 3690-2 Disc Drive Mainframe IBM 3370-2 VINTAGE
>
>No connection to the seller, but they mention it will be scrapped if no
>takers. $150 Buy it now.
>https://www.ebay.com.au/itm/MEMOREX-3693-2-3690-2-Disc-Drive-Mainframe-IBM-3370-2-VINTAGE/272983151498
>or eBay item
Hi all,
thanks, Chuck, for pointing to my website with the 604 drive, but
it's currently offline as I am required to update the disclaimer part.
This is required, since in Europe,a new law for data protection was
introduced on Friday, 25th of May.
I plan to put the website back online this
>The claim about the "only CDC disk drive with hydraulic positioner" is
>false. Starting with the Bryant 6603, I believe that the 808 and very
>rare 821 also used hydraulics. Voice-coil positioners started to be
>used with the 844 drives. I don't recall what the 854 used, as it
>wasn't very
Hello list,
currently, I am in the process of trying to bring back to life a disk drive
installation from Control Data known as "841 Multiple Disk Drive" ( MDD ). From
the early '70s. It uses hydraulic disk head actuators! Pictures of the
subsystem are here:
Hello all,
As I never came across a complete unit of an early PDP-11 with
lights-and-switches console, I decided 5-6 years ago to figure out, if I can't
build one of out of different parts. It seemed possible to get there if I focus
on parts for a 11/35 or 11/40.
5 years ago, I came accross a
it's too bad that I am on the other side of the great pond . I would have
been very interested in it :-(
Pierre
---
Pierre's collection of classic computers moved to:
http://www.digitalheritage.de
Hi Al,
I work at the RWTH Aachen and will contact him. I'd be happy to save the books
from being thrown away.
All the best,
Pierre
---
Pierre's collection of classic computers moved to: http://www.digitalheritage.de
Hello list,
last year, I was able to obtain a BA11-F chassis for my PDP 11/40 build-up
project. The power supply to run a system in basic configuration is complete
except for two H745 bricks (delivering -15V) which are still missing.
I'd be very happy, if anybody could consider parting with one
Hello Noel,
thanks for your quick reply. There are indeed some DEC power brick models on
epay, but none regarding the H745.
All the best,
Pierre
> From: Pierre Gebhardt
> two H745 bricks (delivering -15V) which are still missing. I'd be very
> happy, if anybody could consider
> > From: Henk Gooijen
>
> > As far as I know, the 11/40 uses only one H745.
>
>Depends on what kind of memory it has. If MF11-L, it has two H745's; if
>MM11-U, it has an H745 and an H754.
>
>(The harness has two different connectors for the 5th 'brick', so it can
>handle either kind. At
>
>Am Dienstag, 18. September 2018, 16:27:49 MESZ hat Noel Chiappa
> Folgendes >geschrieben:
>
>
>
>
>
> > From: Pierre Gebhardt
>
> > As I don't have core memory modules available, I thought of using MS11
> > memory, which, according to my research, seems to be an option for
> >
wow! ...Hopefully some larger museums or seriously envolved hobbyists within
Germany can take care of this piece of history to save this nice piece of
computer history.
---
Pierre's collection of classic computers
Hi list,
Just came across this:
https://www.ebay.com/itm/Vintage-Computing-CDC-Magnetic-Peripherals-Control-Data-9766-Storage-Module/143351908424?hash=item2160708848:g:3yEAAOSw1oJdTo9u
Haven't seen one listed in years. The price lets me assume that this offer
addresses customers that may use
Hi Alan,
>3. The system "ran when parked" about a dozen years ago, but it was left
>in an open barn after that. How likely is it that the disks will work
>and be readable? One is a Fujitsu M2333; don't recall what they other
>one is.
>
Alan, I have a few of these drives of which two were
Kossow via cctalk
Folgendes geschrieben:
On 8/30/19 12:50 AM, P Gebhardt via cctalk wrote:
> Talking about such drives, did anybody ever come across some manuals for the
> Super Eagles M2361A?
Just uploaded it to bitsavers
Hi Noel,
I am very glad that you're the one who put hands on it. I planned to get it
with the same intention to scan it for bitsavers, but then I got distracted and
missed it!
Best regards,
Pierre
-
Hello Paul,
thanks a lot for your hint to the DEC controller. I wasn't aware that the TM11,
TMA11 and TMB11 controllers can handle 9-track as well as 7-track NRZI-encoded
tape drives. However, all these controllers seem to be very rare in the public
out there. Not too surprising considering
Hello list,
I have been looking for years for a q-bus or unibus-based disk controller that
is able to handle 7-track drives (NRZI encoding). So far, I only located one
controller type which handles that: Dilog DQ120 or DU120 and I never came
across any.
Any other suggestions regarding
Noel,
there seems to be a copy of the maintenance manual in the unibus-folder on
bitsavers:
EK-DJ11-MM-003_DJ11_Maint_Man_Aug76.pdf
Would be worth checking the document revision.
What is missing, however, is an engineering manual with the schematics.
Best regards,
Pierre
Hello all,
I may get a 129 IBM keypuncher soon and was wondering, if for transportation-
and weight-related reasons, the punch mechanics can be carefully removed
with the cables from the rest of the sytem?
>From the IBM documents, it seems that after removing the top cover from the
>table, the
Hello list,
this might be of interest for list members located in France (Normandie) or
close to it:
There is seller who offers different types of classic systems. Micros as well
as larger systems andwhat appears to be a punched card sorter from the 50s. He
writes that he has more stuff and
Yep, that's what I call preventive electronics maintenance: I power up for a
little time at least once a year all electronics that were in operational order
up to a year ago, no matter what it is, to make sure they don't turn defective
from "non-running", which is mainly affected by caps
Hello list,
I have a scan of a manual with schematics for a ISS Sperry Univac Driver
Exerciser for 7330 and 843x type of disk drives that was kindly scanned and
provided to me by Mark from the Computer History Archivies Project, since he
and myself happen to come accross such exercisers. I
iss drive the 10 plotter 20 meg one? Ed#
In a message dated 3/27/2020 5:12:08 AM US Mountain Standard Time,
cctalk@classiccmp.org writes:
On 3/27/20 3:55 AM, P Gebhardt via cctalk wrote:
> I contacted two times Al via email for access credentials to upload the
> document as
Hello all,
the headline says it all. DEC document number is EK-CI750-UG
I've been looking for that one for years but never came across a paper copy or
scanned document. Does anybody know where to get one?
The technical description and the schematics are available, though.
Thanks for any
Hello list,
I was contacted regarding the availability of a CRT from the terminal shown in
this picture:
http://www.robotrontechnik.de/bilder/Galerien/Computersammlung/Computersammlung_268.jpg
Location is Germany.
Please contact me offlist and I will establish the contact to the owner with
you
Hi list,
i don't know who in the end made available all the documents for the
CDC/Seagate Sabre IPI and SMD disk drives, but I am very happy that they are
finally there for the public!
Thanks a lot to the document providers and Al for maintaining bitsavers!
Best regards,
Pierre
>
>one of the white whales.
>anyone have OEM documentation for their 5" Elite SMD or IPI drives?
>
>The only thing I've ever been able to find was an installation manual for the
>SMD verison
I'd be *very* interested to see docs on bitsavers, too. There are four IPI-2
drives (5-inch) in a SUN
>On 6/16/2020 4:43 PM, Chris Zach via cctalk wrote:
>> Although we all know Google will be around forever
>
>
>they destroyed dejanews despite promising to keep it.
>
>A few long threads I discussed things with Tanenbaum and a guy named
>Torvalds, gone.
>
>Also some responses from a guy named
If anybody of you has been looking for a Bendix System or a CDC 160 console and
has deep pockets: That's your opportunity ;)
ebay numbers 203239156838 and 203239181341
Not affiliated with the seller. Just saw the listings - can't believe that such
cool systems are still stored in some warehouses
>
>How many are aware that the capital of South Dakota, "PIERRE" is
>pronounced by the locals "PEER"?
>
>
>Is the "correct" pronunciation the dominant local one?
I knew about a city called like my first name, but I never knew that it was
pronounced that differently :-D
Cheers,
Pierre
>
>Which just makes me sick to the stomach, considering what I sent up there. I
>really hope you’re wrong. What I really >regret is a LARGE box of GCOS-8
>documentation. :-( They have a lot of unobtainable software and
>documentation.
>
>Zane
You didn't scan the documents prior to giving
>
>Don't trust that museums will abide by your wishes when you donate an item.
>They almost never will no matter how secure you think your agreement with
>them is.
>
>I believe that enthusiastic and competent individuals will look after
>valuable items much better than most museums can.
While I
Thanks a lot for sharing this with us, Noel!
I was looking for such information on the H960 cabinets in the past and this
covers it all.
Best regards,
Pierre
-
http://www.digitalheritage.de
Am Freitag, 28. Mai
Hello list,
there is an NCR-labelled disk pack offered in the bay with a geometry that I've
never come across before:
https://www.ebay.com/itm/353379280282
It seems to be a 14" pack with three platter and six recordable surfaces. The
platters themselves are quite thick and the distance
Am Mittwoch, 24. Februar 2021, 03:53:19 MEZ hat Chris Zach via cctalk
Folgendes geschrieben:
>Wow, I've always wanted an 11/750. Not sure why, the small box size is
>impressive and all that. However it doesn't look like that one has a
>MASSBUS adapter so I will have to pass...
>
>And I
Hello Alan,
I am not at home right now, but when I will be back next week, I will see if I
have the manual for that exerciser. If so, then I will scan it to upload it on
bitsavers.
Best regards,
Pierre
-
Hi Jacob and list,
some years ago, I was also interested in some of their boards.
The first thing I usually do with companies I didn't deal with, yet, is to
contact them with questions to see if I get an answer and of what type it is.
>From tamayatech, I never got any answers.
Thus, I never
>
>Dunno if this is useful for anyone but the price seems right:
>
>https://www.ebay.com/itm/Qty-8-Cdc-Dec-Disk-Head-Heads-75010109-75010101-/255306991030
Indeed useful for my drives :) I placed a bid on it.
Cheers,
Pierre
>There's a photo on twitter:
>
>https://twitter.com/DonaldM38768041/status/1215804561333473280/photo/2
>
>showing a guy standing before an open one at Fermilab.
In of the pictures are shown some very handy tape and disk pack holders on
wheels. I never saw such fancy holders. Would be great to
>I'm rather puzzled that an -11/70 will sell for north of $10K, while a /780
>can't fetch $5K. I can only guess that PDP-11'S are seen as more important in
>the collector world (even though the BSD work, which had such a huge impact on
>UNIX, which has now - in the form of Linux - taken over the
> Ok, it hit $1200, we're out of the running. I hope these systems go
> to a good home, and don't disappear into the black hole of a private
>
>collection.
>
I think that next time, you should consider to rephrase this in a more
considerate way. There are public museums on both sides of
Hi Ben,
> I can't seem to find this anymore. I have seen a few mentions that there is
>a "wrapper" installer that is necessary to install 7.2 on an ES47/ES80
>>machine, and I'm hoping that it was archived or mirrored some place...
Back then in 2016, I also looked for these images for my
Apologies to the list for the noise.
This email was supposed to be sent directly to Paul, my mistake.
Have a nice Sunday,
Pierre
-
http://www.digitalheritage.de
- Weitergeleitete Nachricht -
Von: P
Hello Paul,
how are you doing? Hope that healthwise, things are fine on your side since our
last conversations a few years ago. I bought an RK611 controller back then from
you.
Just came accross your below post and was wondering if you have any
CI750-related equipment around?
I have the
Hello Patrick,
I came across your pictures of a Tullamore pulse heigh analyzer on flickr while
looking for more information about these systems on internet. Did you possibly
take more pictures of this unit which are not on flickr? If so, then I'd be
interested in these as more pictures can
Apologies for the spam, folks,
that message was supposed to be sent as a private one, and not via the mailing
list.
-
http://www.digitalheritage.de
>Am Donnerstag, 2. Juni 2022, 16:21:14 MESZ hat P Gebhardt
Hello list,
does anybody of you know colour codes or the mixture to obtain the grey paint
that DEC used for their early H960 cabinet side panels as well as for their
later cabinet from the 80s and 90s like the H9A10 or H9A15?
Some of my cabinets have scratches and I would like to cosmetically
Hello list,
by coincidence, I came across this website:
https://www.micropolis.com/
It seems to have been set up by a former employee of Micropolis with
information about Micropolis products done until the late 90s.
Cheers,
Pierre
Hello list,
>
>
>My attempt at the colors from several years ago.
>
>http://www.chdickman.com/pdp8/DECcolors/
>
>CHM = Color Harmony Manual
Many thanks to those (especially Charles and Vincent) who gave me pointers on
how to reproduce the DEC grey colour of the DEC cabinets. I wasn't aware
>now. Older drives are close to unobtainium. I never came across a five-platter
>pack for my CDC 854 drive and i have never seen packs for my MMD 844 or my CDC
>BC3xx disk
>drive for 200MB disk packs.
Little correction: It's a CDC 844 Multiple Disk Drive, not a 841.
Greetings,
Pierre
Am Dienstag, 17. Januar 2023 um 15:54:54 MEZ hat Paul Koning via cctalk
Folgendes geschrieben:
>With hard drives you have to worry about mechanical faults, of course. I
>wonder if there are any long term storage issues with the bearings.
To my understanding, during the late 90s, the
Am Montag, 16. Januar 2023 um 17:57:46 MEZ hat Chuck Guzis via cctalk
Folgendes geschrieben:
Hi Chuck,
>The 844 drives date from the early 70s. I worked for CDC on a military
>project where these were brought in to replace the 821s that were bid
>(yes, I know there's no information on
Am Dienstag, 17. Januar 2023 um 01:20:22 MEZ hat Chuck Guzis via cctalk
Folgendes geschrieben:
On 1/16/23 12:40, Paul Koning wrote:
> On the CERL PLATO system at U of Illinois, around 1977, we had 20-ish
> 844-21 drives, and maybe a few 844-41 as well. Those were roughly the
> same as the
Am Montag, 16. Januar 2023 um 17:30:50 MEZ hat geneb via cctalk
Folgendes geschrieben:
>> I bought RK05 packs from Althea (sp?). I know they make diskettes too.
>> Trying to locate their web site so I must be spelling it wrong :-)
>
>I think you're referring to Athana.
Are there still
Am Montag, 16. Januar 2023 um 17:55:22 MEZ hat Jon Elson via cctalk
Folgendes geschrieben:
>Washington University had a magnetic media lab at one time,
>and got several semi loads of gear from an IBM lab. There
>were air bearing spindle tables and many racks of IBM
>circuitry based on
Hi list ,
came across this listing:
https://www.ebay.com/itm/354525985222
I just love the engineering quality of these early electro-mechanical systems!
Reminds me of the CDC 60x series reel tape drives.
BTW, not affiliated with the seller.
In my point of view, 5000 bucks is a lot of money
Hi all,
I just came across pictures on the LCM website about their SDS Sigma
installation there.
On the pictures, one can see 10-platter disk packs in the corner and stored on
the disk drives.
Did the LCM ever had these in operation, either for data retrieval or even demo
purposes?
I know of
efore they spun up the pack on a 4th drive. That wasn't as bad as the time
>one of them dropped a disk pack >and bent platters. That ripped heads
>completely out of the mounting mechanism.
>
>Ah, the good old days!
>
>Rod
> On Jun 2, 2023, at 2:51 AM, P Gebhardt vi
Gebhardt via cctalk
wrote:
> Hi all,
>
> I just came across pictures on the LCM website about their SDS Sigma
> installation there.
> On the pictures, one can see 10-platter disk packs in the corner and stored
> on the disk drives.
> Did the LCM ever had these in opera
Hello list,
there is a PDP 11/23 Plus with two RL02 drives available near Stuttgart,
Germany.
The configuration corresponds to the one shown here:
http://www.cosam.org/computers/dec/pdp11-23/cabinet.html
Contact me off-list if you are interested.
Cheers,
Pierre
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