test-drb April 2011

test-drb@ccmp.vtda.org

184 participants
276 discussions

A question about IBM 2780/3780 over TCP/IP for systems under simulation.

by mgemeny＠pgcps.org

A question about IBM 2780/3780 over TCP/IP for systems under simulation. Are their any examples of this in use now? If so would it be possible to get a sample of a short file being sent and also get a packet capture of the data on the TCP/IP side as that file is being sent. A write up of the implementation would be great if anyone has that, but that may be asking too much. Thanks in advance. Mike Gemeny

13 years, 1 month

Vax 3100 disk recommendation and suggestions

by michael.99.thompson＠gmail.com

>From: joe heck <trash3 at splab.cas.neu.edu> >I have a 3100 model 80 with a failing disk drive. The two drives in it now are Seagate ST15150N (I believe). I have a couple of questions: >Are there NEW drives out there that will work with this VAX? >What do I need to do to make a drive format/work? Joe, I have quite a few small SCSI drives in my collection, but no ST15150N drive. What capacity do you need? -- Michael Thompson

13 years, 1 month

JPL control room, 1979 - anyone want to do some systems-spotting?

by lproven＠gmail.com

The 6th episode of Carl Sagan's /Cosmos/ has some loving shots of the main computer room at JPL at the end of the 1970s. It's 38min into this episode: http://www.youtube.com/user/TheScienceFoundation#p/u/27/y7Qs3iXqgzs ... and lasts a good 2-3min. There's a bit more later, but then, it's Cosmos, the whole thing is extremely well-worth watching. I'd be very interested if anyone could ID the systems, drives, terminals and so on shown, though! -- 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

13 years, 1 month

Surplus source for MAN8940 common-cathode 0.8" 7-segment displays?

by ethan.dicks＠gmail.com

Hi, All, An old project bubbled up to the surface this weekend - I'm looking for a handful of MAN8940 displays (or a modern equivalent like the Lumex LDS-C8024) to refurbish an old display that works but is dim. I'm flinching at the >$2 each price at Mouser (and Digikey only sells the item by the case-load of ~2000). Does anyone know of a surplus place that has larger sizes of 7-segment displays? For close to $50 in LEDs and postage, I'll just leave the dim ones in place. If I can find a source at surplus prices, I'm more likely to replace them. I found the exact part via one surplus page, but I just got my first "undeliverable: will re-try for two days" bounce, so I'm expecting that I won't be able to contact that seller in the end. These are for a personal project, not a work project, so I'm happy to buy from an individual - doesn't have to be a "legitimate" company. Anyone know of oddball places to get oddball LEDs? Thanks, -ethan

13 years, 1 month

Speaking of Lisas...this guy has a garageful!

by dm561＠torfree.net

----- Original Message ----- > Date: Mon, 4 Apr 2011 11:17:31 -0400 (EDT) > From: Steven Hirsch <snhirsch at gmail.com> > Subject: Re: Speaking of Lisas...this guy has a garageful! <snip> > My reason for the comment about Black Holes. Never understood the point > of stacking units in the storage shed. > ----- Reply: It's easy to judge and complain about "hoarders", but there's another perspective: Considering today's high shipping costs it's pretty hard to find anyone willing to pay to ship anything substantial (never mind a little extra to make it worth while) unless it's rare and/or valuable, so you either scrap it or "stack it in the storage shed" in hopes of some day finding someone local or willing to pay the big bucks. I've had to scrap close to a dozen Cromemco boxes and dozens of terminals and old PC/XT/ATs and clones over the years; fortunately I found a local teacher who took a skid full of old data books or they would have gone to landfill as well. Personally I'd love to regain the space that this junk takes up... mike

13 years, 1 month

Looking for AT case in Seattle area

by tiggerlasv＠aim.com

Alas, I got rid of the last AT-ish style case that I had, before I moved up to Seattle. Have you checked at the RE-PC store in Seattle as well? I tend to forget about that one, as Tukwila is much closer to me. Plus, it saddens me to see the PDP-11/23 system sitting there powered down, as a museum piece. *Sigh* \ It never hurts to check out Goodwill, either. I recall spying a desktop (several months ago) that was sporting an "AT" keyboard connector, at the store on the hill in Renton across from Little Peking. . . . so I know that they're out there. . . T

13 years, 1 month

Advice on Lisa 2 restoration

by dm561＠torfree.net

----- Original Message ----- > Date: Sun, 03 Apr 2011 19:05:17 -0700 > From: "Chuck Guzis" <cclist at sydex.com> > Subject: Re: Advice on Lisa 2 restoration > <snip> > Use a nice big Soldapullt? Cleans the holes for me, particularly if > you hold the PCB in a board vise and use the Soldapullt on one side, > while apply heat (and a little solder) to the other side. Push the > button and the hole is clean as a whistle. > > Little Soldapullts are next to worthless. Get the big one (DS017 or > its variant versions). > > I do use solder wick, but mostly for soldering SMT ICs. > > --Chuck ----- Reply: A sharp round wooden toothpick often works well for me. mike

13 years, 1 month

Speaking of Lisas...this guy has a garageful!

by tshoppa＠wmata.com

Original picture looks like a miniature version of my garage back in the early 90's. Walls lined with VT100's and variants stacked up high... less than fifty of them in all but still a lot for one guy :-) >> Is he a collector / restorer sort of person or a "black hole"? I've >> tripped over a number of folks with large quantities of classic gear who >> seem to playing the "..he who dies with the most units, wins" game. >> Drives me crazy when someone who doesn't touch the equipment, doesn't use >> it or display it (in fact, may not even know where it is), has 6-10 of The reasoning behind my garage of VT100's was mostly related to making working units from broken units taken in during hauls. I put no energy doing board-level fixes but swapped major subassemblies with wild abandon. Lots of Southern California hobbyists ended up with several of my fixed VT100's :-). I can see it, in some cases, evolving from "having some spares" to "having so many spares" to "not needing any spares because I fix everything at the board level" but I never got there! Tim.

13 years, 1 month

Oil fires (was Re: old US Telephone hybrid ('Network' block) )

by mtapley＠swri.edu

At 8:54 -0500 4/3/11, ard wrote: >And whatever you do, dn't put water on it if it catches fire. I've seen >this done as a demonstration, and it was spectacular (I am sure there's >something similar on youtube). Tony has spoken many words of wisdom, but few truer. http://www.youtube.com/watch?v=p-F82_OFrds -- - Mark 210-379-4635 ----------------------------------------------------------------------- Large Asteroids headed toward planets inhabited by beings that don't have technology adequate to stop them: Think of it as Evolution in Fast-Forward.

13 years, 1 month

Vax 3100 disk recommendation and suggestions

by trash3＠splab.cas.neu.edu

Hi all, I have a 3100 model 80 with a failing disk drive. The two drives in it now are Seagate ST15150N (I believe). I have a couple of questions: Are there NEW drives out there that will work with this VAX? What do I need to do to make a drive format/work? I installed the drives probably over ten years ago and I just don't remember if I had to format them special or on another box or what. I don't have the manuals any more, so I'm stuck. Thanks for any advice you folks have... Joe Heck

13 years, 1 month

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test-drb April 2011