test-drb March 2001

test-drb@ccmp.vtda.org

214 participants
552 discussions

TU-58 rollers and emulation (was Re: VAX 11/725)

by ajp166＠bellatlantic.net

From: Ethan Dicks <ethan_dicks(a)yahoo.com> >> > There is out there a TU-58 emulator for PeeCee... There is one that runs under UNIX. Also the rollers for the TU58 I clean off the goo to get down to the basic hub then use .500 od/.375 id Tygon tubing. which is a stretch fit over the hub, add a drop of super glue and trim to width as diameter is not critical and that material seems to hit it very close. I've done this to maybe 8 them I still use. Allison

23 years, 5 months

Equipment needs home: Portland, OR. area

by wolf＠nwinfo.net

hey do you have any ideas about using relays or some thing connected to a parallel or aerial port to control the power to an outlet, you know like a dimmer switch controlling motors ETC if you have any thought or ideas I'd be glad to hear them.

23 years, 5 months

decus lives!

by agraham＠ccat.co.uk

At least in the UK anyway. The recent flurry of DECUS complaints on here made me wonder what had happened to my own membership - sure enough it expired last month so they're wanting another 25 english pounds off me. Thing is, is it still worth it to be a member? I haven't been to the seminars etc for *years* and don't have a requirement for hobbyist kits or anything like that...... thoughts? -- Adrian Graham MCSE/ASE/MCP C CAT Limited Gubbins: http://www.ccat.co.uk (work) <http://www.snakebiteandblack.co.uk> (home) <http://www.binarydinosaurs.co.uk> (The Online Computer Museum) 0/0

23 years, 6 months

D connector tirade (was: Re: Age-old ethernet equipment)

by pete＠dunnington.u-net.com

On Mar 30, 19:49, Richard Erlacher wrote: > I'm glad I don't have to explain that. There is, by the way, another more > "current" name for the 3-row, 'E'-shell connector commonly seen with 15 pins in > it in VGA applications. I'm not remembering it, though. HD-15? -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

23 years, 7 months

ldb4401 can be replaced by .....?

by General＠cyber.net.pk

dear sir please address the issue regards nasir

23 years, 7 months

VaxServer 3100 and VT340 terminal

by hsappleton＠sprintmail.com

I have a Vaxserver 3100 and a few vt340 available. Can they be used together and if so how? thanks for your consideration Headley

23 years, 7 months

Who collects (reads the mailing list...?) vintage computers in Quebec

by Mzthompson＠aol.com

Claude <claudew(a)sprint.ca> wrote: > Sometimes I think I may be the only vintage computer collector in > Quebec, Canada. Look on the bright side, at least the competition is slim. Some guy here locally had overheard me talking to someone else about a stash I knew of and had already contacted the organization. He went there pretending to be me and made arrangements to haul some stuff off. By coincidence I called the place later the same day as his initial visit. My contact was all confused until she realized that she was being duped by this person. I ended up telling her to let him have the first stash (old intel boxes) to which she replied she would and save the other (and better) stash for me. She let him load the junk and then gave him a piece of her mind and sent him packing. In a sense he did me a favor, saved me from having to haul the junk along with the good stuff. > When I mention I collect vintage computers, people look at me like I am > due for a trip in the "wacko wagon"... Hey, they thought the same thing of the dude who collected bottlecaps, now they wished they had picked them up off the ground themselves. > Those who feel sad for me can send me their Lisa's, TRS model IIIs and > Next boxes ;-> NeXT: You want Cube or Slab, Plain or Turbo? Mike

23 years, 8 months

HP 9845s? (And an original IBM PC.)

by RebelTerry＠home.net

> How did you come to write games for the 9845 anyway? Did you sell them? > It's not exactly the most popular game platform. Well, this friend and I worked at NASA JSC. We were shuttle flight controllers in the early STS days, including STS-1. (You should see my collection of stuff from the first shuttle flight!) In our off hours, we played with the 9845, writing games: lunar landing simulator (which I did rewrite into C++ and still play), submarine search and destroy (which I rewrote and was published by Broderbund Software as "Search and Destroy", car race, solitaire, blackjack, Star Trek, GREAT baseball and 1-on-1 basketball games, and several others. FAR better than anything on the market in the early 80s. (Of course, that's the advantage of having a $70,000 machine at your disposal!) Never sold them. I left NASA in '82 (to come to Boeing) and interviewed an HP rep from Corvallis, showed her all the great stuff. Her response: "Outstanding! How about coming to work for us and writing aero engineer software for wind tunnel testing and such?" No thanks. > And do you have any other fun toys in your collection? I'm being nosy since > we're both in Seattle. Actually, I do have an *original* IBM PC. March 82, 48k motherboard (not the later 64k), SINGLE side 160K floppy, Amdek color monitor. And some games I wrote for that. I'm heartbroken that I threw out my original DOS 1.0 disks/book back in about '84, when DOS 2.1 came out. (I do still have all the 2.1 disks & books.) So, if anyone knows where I could beg, borrow, or steal a DOS 1.0... ;-} BTW, my wife's uncle still has his original IBM PC Jr, complete with chicklet keyboard. Gonna half to try to scam him out of that. > BtW, whenever I try to mail to RebelTerry(a)home.net, I get a message saying > "Relaying denied". I have to use tlb55(a)home.net instead. No idea what's going on there. Relaying bumps usually happen when the sender tries going through the wrong SMTP server. Don't know why the other would work. > P.S. If the BASIC listing uses keywords in optional ROMs, and the working > machine doesn't have those ROMs, what happens when you try to print out the > listing? Good question.... Thanks. RT

23 years, 8 months

Age-old ethernet equipment

by pete＠dunnington.u-net.com

On Mar 28, 2:47, Iggy Drougge wrote: > This weekend, along with a batch of PS/2s, I received a 3Com 3c588 1988 > vintage MultiConnect Repeater. It's a 19" case with space for sixteen cards. > Mine features one card indicating power with a green LED as well as a DB-9 > female connector, then fourteen cards equipped with a BNC connector, an > activity led, one partition LED and a partition/reset switch each. > Whenever a card is connected to a 10b2 network, the partition light (which > otherwise emits a steady red light) begins to flicker. Upon flicking the > switch into reset mode, the partition light goes out. The network works fine > as long as there is no partitioning. I suppose its purpose is to not leak > traffic between several networks. Not quite. "Partitioning" is network jargon for disconnecting a port or segment. If there's no terminator, the transceiver will behave as though continually detecting collisions, and the repeater will automatically disconnect ("partition") that transceiver from the rest. The red LED lights up to tell you it has done so. It won't self-reset because if it really were connected to a faulty network segment, it might end up going in and out of operation. > What is the purpose of the DB-9 connector? I'm not familiar with this particular repeater, but I imagine it's a serial port for management and setup. Modern 3Com equipment has a serial port wired to the same (non)standard as PC 9-pin ports, but that one may not be wired in the normal way. It may also do auto-baud-rate detection, and it probably won't emit anything until it receives a couple of carriage returns. My old SynOptics 2813 hubs have a DA9 as well, and it's some odd connection for a modem (they also have a DB25 whichj is a normal serial port). I'd pull the card and see if anything on it gives you any clues. > Could this repeater slow a network down? Unlikely. You can get different cards for those repeaters -- 10baseT, 10base2, 10base5/AUI, and the 10baseT cards have 3 ports each. 3Com wouldn't have done that if it were going to significantly impact bandwidth. It's basically just a buffer; it doesn't process the data passing through like a switch does. Any intelligence in it is just for monitoring and setup (partitioning, etc). Another thing you could try is snooping on the network packets (if you have snoop, tcpdump, or similar) to see if the repeater emits any packets when it first powers up. It might be trying to BOOTP to get an IP address, and if you give it one, you can probably telnet to it and look at the setup. It probably needs a password, though. > What does partitioning actually entail? See above. Some more modern 3Com hubs also have the capability to split the unit into segments (eg, the SuperStack II PS 40 hubs and others can have 4 segments) but assigning ports to different segments isn't usually called partitioning. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York

23 years, 8 months

Reformat RA81/82?

by greg＠ciswired.com

Can RA81/82 disks be reformatted in the field? If so, is this done through XXDP or is there a way to do it from the disk's serial port? My RA82 occasionally lights its FAULT light and extinguishes its ready light during write operations. The likelyhood of it faulting appears (but I am not certain) to be correlated with a specific region of the disk. About five-ten seconds after the fault, the FAULT indicator turns off and ready comes back on. At no time is an I/O error generated that the application or the operating system (2.11BSD) see so this fault appears to be transient and is resolved by either the drive or the drive/controller together. It "smells" like a data write error that's resolved after a few automatic retries. I'm hoping a low-level reformat could clear it up. Am I wacked out? If there's an XXDP exerciser/formatter available I'd appreciate it if someone could point me there. It's been nearly twenty years since the last time I even tried running XXDP Thanks as always, greg p.s. The RA81 drive on the same controller never gives any trouble (yet). I've tried some more basic things like swapping SDI cables and drive ports but it doesn't make a difference. Gregory Travis Cornerstone Information Systems ATS greg(a)ciswired.com 812 330 4361 ext. 18

23 years, 8 months

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test-drb March 2001