test-drb July 2011

test-drb@ccmp.vtda.org

134 participants
162 discussions

DEC MMJ Adapter H8571-J Rev A and B Differences

by robert.jarratt＠ntlworld.com

I will shortly be receiving some of these, apparently a mixture of rev A and rev B. I don't know what the difference is, can anyone tell me? Thanks Rob

12 years, 11 months

Looking for Sun 3/110 CPU Board

by earl＠baugh.org

Anybody know where I might be able to find a Sun 501-1134 or 501-1209 3/110 Motherboard? I've got one that's got flaky RAM, and while I try to find the defective components, I'd like to find a replacement in case it's not something easily repairable, so I can keep the system operational. Thanks. Earl

12 years, 11 months

Old computer magazines available

by tosteve＠yahoo.com

This guy is going to give me boxes of these old magazines. If there are any you want, I can mail them media rate, or you can pick-up in southern California 92656. I don't really want to pick through them looking for specific issues, though. Byte magazine 80 Micro-C Communications of the ACM ACM Computing Surveys ACM Sigart Kilobaud Microcomputing Computational Linguistics Scientific American '60s Sent from Steve's iPhone.

12 years, 11 months

Help the UK Computer Museum ID a new acquisition?

by lproven＠gmail.com

http://www.computinghistory.org.uk/det/15532/Mystery-Item/ http://ow.ly/i/eXzb -- Liam Proven ? Info & profile: http://www.google.com/profiles/lproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AIM/Yahoo/Skype: liamproven ? MSN: lproven at hotmail.com ? ICQ: 73187508

12 years, 11 months

A visit to berlin

by pontus＠Update.UU.SE

Hi All I'm in Berlin until friday. I'm planning a visit to the Technical museum today. Is there anything else classic computing wise that I should check out? Anyone in berlin who wants to show of their collection? Kind Regards, Pontus

12 years, 11 months

Got 2, Epson HX20s; One available for swap; Bull Gamma10 Boards

by oe5ewl＠gmail.com

Hi, got 2 HX20s in carrying cases yesterday. As far as I can tell the displays work. The Cassette Drives spool and the one machine I tested loaded a program. The internal batteries are dead but exchangeable to more modern rechargable cells with little effort. I'd like to swap the second HX20 for some radio gear (a Stornophone 6000 for 2m VHF for example would be a great deal). The available HX20 comes to you with a carrying case, a bit of printer paper, a Wall-Wart(original) and the cassette module on the right; german localized keyboard. The little computer looks nice and clean but is rather untested (it switches on at least and brings the 1 Monitor 2 Basic menu). I can throw in a micro-cassette or two if you want. There were some Bull marked printed boards in this lot, likely from an old computer which are available for any interested people too. I don't have any idea what this boards are but I think these are 60s PCB-Design. Every board is a c (abt. 15cm sidequadratis) and has some little doughter-boards soldered onto. I'll post pictures in the evening. http://www.technikum29.de/de/rechnertechnik/gamma10.shtm has an Image of One of the cards I've got too. I have 5 or 6 cards in total. Available to good hands. Regards, Wolfgang <offtopic on> With the HX20s came an old Eminent Type-80 Electronic Organ. I found nearly nothing about this particular model but would need some schematics or hints to repair this one. Should bring nice sounds as it is a full tube model. Anyone a clue where I could get some more information <offtopic off> -- Wolfgang Eichberger - OE5EWL Operating System Collector Blog: 5ewl.blogspot.com Homepage: www.eichberger.org

12 years, 11 months

Operating Systema for one HP Integrity Server (model 1620)

by spedraja＠gmail.com

Hi. It's possible for me to obtain one HP Integrity Server (model 1620). As HP said in its website, it supports Four Operating Systems: HP UX 11i version 2, Linux (RHEL 3 Update 3, RHEL 4, SuSE SLES9), Windows Server 2003 Enterprise and Datacenter Edition, and OpenVMS V8.2-1 or higher. Most interesting options for me are HP-UX (I know and manage it usually) and OpenVMS. Some way to obtain them for an affordable (yes, yes, good question about the meaning of affordable...) price ? Thanks. -- Saludos - Greetings - Freundliche Gr??e - Salutations Sergio Pedraja <http://www.linkedin.com/in/sergiopedraja> twitter: @sergio_pedraja http://www.linkedin.com/in/sergiopedraja http://www.quora.com/Sergio-Pedraja https://www.xing.com/profile/Sergio_Pedraja http://www.viadeo.com http://www.avalonred.com/ -----

12 years, 11 months

9 Track Tape Drive Interface Variants

by jkunz＠unixag-kl.fh-kl.de

Hi. Got a PDP-11/34 today. It came with a RK05, a Tektronix 4012 + hard copy unit and a Western Peripherals TC-130 9 track tape controller. Unfortunately I had to leave the actual tape drive behind. No space left on /dev/car and way to heavy for my herniated intervertebral disk... The tape drive was some kind of Cipher 800/1600 BPI drive. There was printed "MOD NO 0920640-1250U" on it. I couldn't find anything usefull on the net with this information. Now the problem: I own a Cipher 880 9 track tape with Pertec interface. It works well on my QBus VAXen and the PDP-11/73. So I am used to the 2 x 50 pin cables / connectors found along the Pertec interface. But the TC-130 tape controller has one 50 pin cable labeled "control", a 26 pin cable labeled "read" and a 26 pin cable labeled "write". There are two connector adapters to adapt the 26 pin cables to 36 pin connectors. I found the TC-130 manual on bitsavers. From a quick look at the signal names the interface of the TC-130 is not Pertec. But what else? Is there any way to connect the TC-130 to my Cipher 880? -- \end{Jochen} \ref{http://www.unixag-kl.fh-kl.de/~jkunz/}

12 years, 11 months

Wanted: Hayes Pocket Modem 2400

by mikelee＠tdh.com

Not the most classic of classiccmp but by chance anyone have one of these around? No real reason or need, just want one in my collection. Or anyone know how common they were back in the day? Here's an Ad for it I found: http://www.flickr.com/photos/thedamnmushroom/5362889570/

12 years, 11 months

MINC-11 boot problems

by james＠machineroom.info

Hi all, I obtained a MINC-11 from Adrians DEC emporium(aka garage) in Cambridge last year (http://www.binarydinosaurs.co.uk/museum/digital/minc/index.php). I've finally got around to taking a look and it appears to be complete and original with a /03 CPU. Taken all the cards out and given it a good clean. Checked for any odd washers etc. in the backplane. Removed the power supply (H786), hooked up to a pair of hard drives as a dummy load and tested. Nothing. Normally at this point I'd scrap it and hook up a PC PSU but I've been reading this group too long and have been persuaded by Tonys component level repair arguments so I got stuck in :) Tracked it down to one of a pair of 1N4004s connected in series after the 7912 12V start-up regulator. So, I now have healthy 5V & 12V supplies and these seem to be stable for a long time with all the cards in place. But - it's not booting. The diag LEDs on the BDV11-YA constantly read 1001 from power on (I'm assuming that on=1). The only table of diag codes that I could find lists 1001 as "DECnet message received" which I believe to be bogus since I don't have any DECnet cards (I'm also wondering if the MINC has different diag codes?). So I started digging further and found that BDCOK H is ~1.7V and BPOK H is ~2V. Now, I believe that these signals are generated directly from the PSU, specifically the power monitor board that calls them DC L and AC L. My assumption is that these should both be at 5V in a healthy system since they are active high - correct? Unlike a regular LSI11 the MINC doesn't have any front panel buttons or LEDs (e.g. for BDCOK status) so I can't easily tell if what I have is good or not... I've not gone too much further yet but thought I'd try and get some knowledgeable input to make sure I'm not going down the wrong path. One thing I have found is the -12V supply that's only used inside the PSU (and feeds the power monitor board) is at ~-15V. Many thanks for any advice! James

12 years, 12 months

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test-drb July 2011