test-drb May 2017

test-drb@ccmp.vtda.org

160 participants
179 discussions

by aek＠bitsavers.org

would be nice if someone could save this, since it is so complete. he's only off my about 20 years in the age of it www.ebay.com/itm/292132955235

6 years, 11 months

DEC terminals and classic server computing

by henry.bnd＠gmail.com

I have long had an interest in server tech and "technology with character" I finally took the plunge and got a DEC and I am looking for something of a similar vintage to connect it to. I have read about VAXstations, z80 based mainframes. This seems like the kind of devices I would like to acquire and learn the workings of. I also require a keyboard for my DEC terminal. As this is my first post to the list, I am mostly looking for resources (UK would be preferable) -- H Sent from my Android device with K-9 Mail. Please excuse my brevity.

6 years, 11 months

DIR of old computer collectors #3

by steve＠oldcomputers.net

Here's the page for now for your perusal - the temporary URL is subject to change. http://oldcomputers.net/some-collectors.html There's a submit button in the upper right, but it just emails me. The entry field in the upper left is kind of fun - enter a valid address or location, select it from the drop-down box, and it takes you there. It also gives GPS coordinates.

6 years, 11 months

For Sale: RCA COSMAC VIP with SC/MP II co-processor

by sellam.ismail＠gmail.com

This is a very cool COSMAC VIP that has been slightly modded to act as a front-end processor for an SC/MP II processor board with a custom-built front panel for the SC/MP as well as some interesting add-ons for the VIP (PROM programmer, Tiny BASIC ROM card, CDP1855 math co-processor) and more. Full description and links to photos here: http://www.vcfed.org/forum/showthread.php?58035-RCA-COSMAC-VIP-with-SC-MP-I… I also produced a video to show off the setup for historical purposes: https://www.youtube.com/watch?v=BozGSTumwXc Thanks! Sellam

6 years, 11 months

Help cloning an SGI boot drive

by mazzinia＠tin.it

Hello, I tried to clone a boot drive ( on a bigger one ), using one of the scripts on nekochan. The disk was initialized , labelled Then formatted by the script, and cloned. The data is present if I mount it The issue starts when I change the id and try to boot from it... this is what I get esf read error, bad count esf read error, bad count no file system found for "unix". unable to execute dksc(0,1,0)unix: media not loaded autoboot failed dksc(0,1,0)unix: media not loaded >From Prom, ls gives : dksc(0,1,8)/: sgilabel sash symmon esf read error, bad count no file system found for "/". Any suggestion is accepted. Alessandro

6 years, 11 months

HP9816 keyboard plunger wanted.

by mattislind＠gmail.com

Hello! I recently received a HP9816 machine. The previous owner originally got the machine without a keyboard but subsequently sourced a keyboard off ebay. Unfortunately this keyboard was not in the best shape. One key was stuck and when taking it apart it was evident that it has taken a bath for quite some time. At least the electronics around the space bar were quite affected with corrosion. Luckily this keyboard is quite simple design with only CMOS 4XXX IC, and better yet, Tony Duell has already reverse engineered it (together with the rest of this little machine). Thanks a lot Tony! But the stuck key appeared to be cause by the "plunger" (is that the correct english word?) is slightly cracked in the corner. When the keytop is inserted it is not sliding very well. I have not found a method of repairing it so I am asking the community if there are anyone that has spare "plungers" for the HP9816 keyboard. http://i.imgur.com/q5aRQnC.jpg?1 http://i.imgur.com/67xWZ8q.jpg?1 http://i.imgur.com/cGWCKFw.jpg?1 This is the keyboard at the hpmuseum.net page: http://www.hpmuseum.net/images/200serieskeyboardsmall-35.jpg /Mattis

6 years, 11 months

Random musing: VCB02 on VAX-11/750

by derschjo＠gmail.com

So I had a random thought in the wee hours this morning and I leave it to you, the cctalk braintrust, to tell me exactly how stupid this idea is: I have a VAX-11/750, an Able QNiverter (UNIBUS->Qbus adapter), a 22-bit Qbus backplane, and a VCB02 (QDSS) 4-bit graphics boardset. Theory: With an appropriately modified NetBSD driver for the VCB02, such that it provides only 18-bit addresses to the VCB02's DMA engine, I can get X running on the VCB02 on the 11/750. That is, the configuration is: 11/750->Unibus->QNiverter->Qbus->VCB02. Obviously the console functionality of the VCB02 won't work since that requires support on the VAX side of things that won't be present, but I think everything else should work. I've browsed the technical manual and I don't see anything that should get in the way, I'll just need to hack up the driver appropriately. But this is something that randomly popped into my head (I was inspired by a research paper, "A VAX Based Data Acquisition Computer System at the Nuclear Structure Research Laboratory" wherein a Matrox QRGB Qbus graphics board was lashed to an 11/750 in a similar manner... What say you all? - Josh

6 years, 11 months

What connector is this?

by mattislind＠gmail.com

Can someone tell me what kind of connector this is: http://i.imgur.com/ZvLLQSO.jpg?1 A source for a mating male connector is appreciated! /Mattis

6 years, 11 months

Run/Stop switch from a Soviet S/370 clone

by lproven＠gmail.com

My flatmate has one of these. Just the small subassembly with the 2 push-buttons and a red light between them. Is this something that would be of interest to anyone? I'm trying to persuade him to eBay it instead of throwing it away. We've also got the plastic covers from a few disk packs, an empty metal chassis and a few other odds and sods. Sadly most of the machine was binned long long ago. :-( -- Liam Proven ? Profile: https://about.me/liamproven Email: lproven at cix.co.uk ? Google Mail/Talk/Plus: lproven at gmail.com Twitter/Facebook/Flickr: lproven ? Skype/LinkedIn/AIM/Yahoo: liamproven UK: +44 7939-087884 ? ?R/WhatsApp/Telegram/Signal: +420 702 829 053

6 years, 11 months

In Hong Kong any old computing places to go?

by cliendo＠gmail.com

Im working in Hong Kong the next few weeks and I was wondering if there is a place of interest I should check out

6 years, 11 months

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test-drb May 2017