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101090 discussions

Course materials for MIT 6.031 (c. 1974) scanned

by jnc＠mercury.lcs.mit.edu

> From: Josh Dersch > descriptions of the PDP-11/45 DELPHI system > ... > moves on to Algol and LISP I later became the 'owner' of that PDP-11/45 (our group at LCS traded an -11/40, which EECS wanted for their DECSystem-20, for it). That Algol and LISP were later moved to Unix V6 when the group that had done DELPHI converted to Unix. I have both - alas, the source for the Algol has been lost. :-( Noel

6 years, 7 months

IBM 5110 transformer?

by mattislind＠gmail.com

A friend of mine is trying to repair a IBM 5110. He is convinced that the transformer is bad. Anyone knows the spec of the transformer? Someone that has a spare? Looking into the tech documentation tell me that the machine requires +/- 5V and +/- 12 V and also +8.5V A very rough guesstimate based on the number of wires from the PSU to the backplane would give 20A 5V, 4A +12V, 4A +8.5V, 1A -5V and 1A -12V. Anyone with a better guess? /Mattis

6 years, 7 months

HP3000/917LX available in Vacaville

by sieler＠allegro.com

Lee writes: > This is a *very* nice entry-level HP3000/MPE system based on PA-RISC > architecture. But one note - the 917 had the soldered TOD battery on the > motherboard, vs. the FRU TOD battery in the later 918. Not a reason to skip > if you are interested in this machine. True, there's been some discussion of that over on HP3000-L. IIRC, it's still possible to boot even if the battery is dead ... boot to the ISL> prompt, run clkutil, set the date, then exit to ISL>, then run 'START'. Stan

6 years, 7 months

fix? Repair? or leave alone? http://rcade.camden.rutgers.edu/2020symposium.html

by couryhouse＠aol.com

http://rcade.camden.rutgers.edu/2020symposium.html

6 years, 7 months

Data General AViiON AV300D docs?

by cmhanson＠eschatologist.net

Does anyone have AViiON AV300D or related docs? I got a pair that have bum power supplies and I?m hoping to find something that will makes servicing them easier. After I get them running, I?ll obviously be looking for software. And a pinout for their unique SCSI port, though I hear they can netboot; any details about that would be useful too. ? Chris Sent from my iPhone

6 years, 7 months

FTGH: Pioneer DRM-602X 6-CD changer

by frederic.hugelin＠icloud.com

Hello, I have read your message about pioneer drm-604. I bought one on eBay but the sender didn?t t take out the caddy for shipping and I can t take it out from the player. I would like to know if you could share the service manual or if you have a tuto to diy. Thank you in advance for your help. Regards Fr?d?ric

6 years, 7 months

VCF Midwest 14 Wrap-Up

by silent700＠gmail.com

Hello all - VCFMW14 has come and gone and we're left with lots of photo galleries, a few videos and hopefully fond memories for all. It was a new venue this year and an unprecedented (and unexpected - seriously we filled the place) turnout. Wheels are in motion toward doing it again next year but for now we're just going to rest a little first. Here's a link to all of the known-thus-far pics and vids: http://vcfmw.org/past.html The videos of the actual VCFMW Talks are being scrupulously compiled and encoded and another announcement will go out soon when they're ready. For now, check out the cool setup time-lapse and visitor review videos at the link above. It's looking like we're going to do a reprint run of this year's official shirt because so many were unable to purchase one at the show (see the bit above about unexpected turnout). Maybe you'd like one, too. There's a size survey form in our latest mailing list message here: https://us18.admin.mailchimp.com/campaigns/show?id=389367 And finally a big THANK YOU to all who donated, displayed, volunteered and attended in order to make VCF Midwest the most enjoyable and exhausting weekend of the year for us. -j

6 years, 7 months

Fwd: [TUHS] Recovered!!! The Georgia Tech Software Tools Subystem for Prime Computers

by aek＠bitsavers.org

Have been on the road, and I just noticed this announcement on the TUHS list. I'd been trying to find this for a long time -------- Forwarded Message -------- Subject: [TUHS] Recovered!!! The Georgia Tech Software Tools Subystem for Prime Computers Date: Tue, 24 Sep 2019 22:45:29 +0300 From: Arnold Robbins <arnold at skeeve.com> To: tuhs at tuhs.org Hello All. Believed lost in the mists of time for over 30 years, the Georgia Tech Software Tools Subsystem for Prime Computers, along with the Georgia Tech C Compiler for Prime Computers, have been recovered! The source code and documentation (and binary files) are available in a Github repo: https://github.com/arnoldrobbins/gt-swt. The README.md there provides some brief history and credits with respect to the recovery, and w.r.t. the subsystem and C compilers themselves. Credit to Scott Lee for making and keeping the tapes and driving the recovery process, and to Dennis Boone and yours truly for contributing financially. I set up the repo. For anyone who used and/or contributed to this software, we hope you'll enjoy this trip down memory lane. Feel free to forward this note to interested parties. Enjoy, Arnold Robbins (On behalf of the swt recovery team. :-)

6 years, 7 months

HP3000/917LX available in Vacaville

by sieler＠allegro.com

Hi, A friend tells me that there is a Hewlett-Packard HP3000/917LX available in Vacaville (no word as to price, but I suspect it's free ... the owner wants it to go to a good home). Reportedly running, with additional "mini-tower" (PC size or less) of external disks, a DTC (Distributed Terminal Controller, lets you have up to 32 RS232 terminals attached (depending upon model of DTC)), and an external tape drive (probably DDS, but I don't know for sure). If interested, email me at sieler at allegro.com and I'll put you in touch with the friend of the Vacaville guy. thanks, Stan

6 years, 7 months

Update: Received my 50lb Datapoint 2200 computer from Austria via regular post.

by tosteve＠yahoo.com

Found a Datapoint 2200 in Austria that I wanted - I asked seller Viktor to pack it well, by wrapping it several times in big-bubble bubbewrap, until it was just a giant cube of bubble wrap. See pics here: http://oldcomputers.net/box/ ? The cover was actually sent separately in another box so it didn't crushed by the 50 pound system. First, I have to rewire it from 220vac to 110vac. Second - what to do about that screen?

6 years, 7 months

FTGH VME Microsystems VMEbus DMA interface card manual

by steven＠malikoff.com

VME Systems VMEbus DMA Interface card manual. 1991 reprint from 1986. About 100+ pages, schematic, asm test routines http://web.aanet.com.au/~malikoff/blah/ I didn't see it on bitsavers. I don't have any VMEbus gear so no point it taking up space here. Yours for postage from Brisbane, Oz. Steve.

6 years, 7 months

Houston "clearance"

by sales＠elecplus.com

https://www.ebay.com/sch/m.html?_ssn=jonnyadler <https://www.ebay.com/sch/m.html?_ssn=jonnyadler&LH_PrefLoc=&_from=R40&_trks id=p2499338.m570.l1313.TR12.TRC2.A0.H0.Xkeyboard.TRS0&_nkw=keyboard&_sacat=0 > &LH_PrefLoc=&_from=R40&_trksid=p2499338.m570.l1313.TR12.TRC2.A0.H0.Xkeyboard .TRS0&_nkw=keyboard&_sacat=0 These are the kinds of prices you can expect from the guy in Houston. It was posted earlier as a warehouse clearance. Cindy Croxton Electronics Plus --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 7 months

WTB Metcal workstand

by marvin＠west.net

A friend of mine, Harold Fue, has been selling new and used soldering equipment for many years, and may well have what you are looking for. My knowledge of Metcal is limited, but I bought a number of new tips, a used SP-200 unit with handpiece and the handpiece holder from him a couple years ago. A search on google for "harold fue santa barbara" came up with his contact information. He has been selling at Dayton Hamvention for who knows how many years, but an auto accident a year or so ago totaled his vehicle and slowed him up (he is in his mid 80's) >from doing that. Marvin > >> On Sep 25, 2019, at 6:58 PM, Alexandre Souza via cctalk <cctalk at classiccmp.org> wrote: >> >> Dear sirs >> >> I'm looking for a metcal MX500 (so you know what handpiece I have) workstand. Also, cheap tips and a new handle, mine is broken and fixed up man times >> >> I don't know if this request is apropriate on this list, but who knows? =) >> >> Thanks >> Alexandre >> >> PS: I know there are some on epay? > > > Is there a good source for cheap Metcal tips? I got mine through this list about 20 years ago, and IIRC, I still need tips. > > Zane

6 years, 7 months

HP vintage boards being sold as scrap

by sales＠elecplus.com

He is in RI, and I am in TX. Your shipper is in Calif. You might consider contacting one of the computer museums in Rhode Island to see if they will assist you. http://www.ricomputermuseum.org/ https://www.rcsri.org/ Cindy -----Original Message----- From: Guy Dunphy [mailto:guykd at optusnet.com.au] Sent: Wednesday, September 25, 2019 10:39 PM To: Electronics Plus Subject: RE: HP vintage boards being sold as scrap At 04:46 PM 25/09/2019 -0500, you wrote: >If enough people want them, and someone gets a winning bid, then they can >come to me and I will repackage and ship them for the actual cost of >postage. > >Cindy Thanks for the kind offer. Where are you, relative to the seller? I can see a problem though. Isn't it impossible to have ebay-won items shipped to other than one's ebay-verified address? I'm not sure... I know to get things sent to my reshipper, I have to have them set as my 'real address' before bidding. That's why I asked if anyone is close enough to pick up the boards. Not to mention sidestepping the seller's problematical packing intentions. Guy >-----Original Message----- >From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Guy Dunphy >via cctalk >Sent: Wednesday, September 25, 2019 4:01 PM >To: Brent Hilpert; General Discussion: On-Topic and Off-Topic Posts >Subject: Re: HP vintage boards being sold as scrap > >At 12:00 PM 25/09/2019 -0700, you wrote: >>On 2019-Sep-25, at 3:07 AM, Guy Dunphy via cctalk wrote: >> >>> Does anyone else recognise some of the other boards? >> >> >>There is a stack of IO interface boards, including HSTs, for the HP >2100/1000 series there. >> >>Lower-right stack in this pic, 7 boards, boards have one red and one grey >handle: >> https://i.ebayimg.com/images/g/n08AAOSwjY5dg5Kd/s-l1600.jpg >> >>"HS Terminal" is discernible on one of them, and the one on top looks to be >an HS Terminal as well. >>Can't be certain about the others but they have the same size IO connector, >they may all be HSTs. >> >>HSTs are the basic RS232 & current loop, async serial-line interface >boards, 12531D, used for the console and such in the 2100/1000 series, >>going back to the early machines of the series. >> >>(HS is 'High-Speed', but that's relative to the late-60s, billed for up to >2400bps, but it is possible to operate them at higher speeds). >> >>I'd buy one for, say 60$, if someone picks up the bunch and wants to flog >one. > > > >Sigh. And here I am putting together a rack with a HP 1000 system. >Though, some of those edge connectors look corroded. > >I really would like those DtoA boards. So many! I have both a 3497A and the >3498A extender >plus a need for lots of cards for them. Plus I have the service manual with >schematics >so can repair them. > >Anyway... the seller is listed as being in Warren, Rhode Island, United >States. >I'm in Australia, and have a reshipper in the US. BUT, the reshipper is on >the west coast. > >Is there anyone on this list who lives in that area who could pick them up, >then pack and post >small sets of boards? I can afford to bid (fingers crossed), but _can't_ >afford the postage >of "90 lbs" across the continent. Let alone to Australia. > >The one existing bid, is that anyone here? > >Guy > > >--- >This email has been checked for viruses by Avast antivirus software. >https://www.avast.com/antivirus > >

6 years, 7 months

WTB Metcal workstand

by alexandre.tabajara＠gmail.com

Dear sirs I'm looking for a metcal MX500 (so you know what handpiece I have) workstand. Also, cheap tips and a new handle, mine is broken and fixed up man times I don't know if this request is apropriate on this list, but who knows? =) Thanks Alexandre PS: I know there are some on epay... -- ---8<---Corte Aqui---8<--- https://www.tabalabs.com.br https://tabajara-labs.blogspot.com

6 years, 7 months

HP vintage boards being sold as scrap

by guykd＠optusnet.com.au

At 04:46 PM 25/09/2019 -0500, you wrote: >If enough people want them, and someone gets a winning bid, then they can >come to me and I will repackage and ship them for the actual cost of >postage. > >Cindy Thanks for the kind offer. Where are you, relative to the seller? I can see a problem though. Isn't it impossible to have ebay-won items shipped to other than one's ebay-verified address? I'm not sure... I know to get things sent to my reshipper, I have to have them set as my 'real address' before bidding. That's why I asked if anyone is close enough to pick up the boards. Not to mention sidestepping the seller's problematical packing intentions. Guy >-----Original Message----- >From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Guy Dunphy >via cctalk >Sent: Wednesday, September 25, 2019 4:01 PM >To: Brent Hilpert; General Discussion: On-Topic and Off-Topic Posts >Subject: Re: HP vintage boards being sold as scrap > >At 12:00 PM 25/09/2019 -0700, you wrote: >>On 2019-Sep-25, at 3:07 AM, Guy Dunphy via cctalk wrote: >> >>> Does anyone else recognise some of the other boards? >> >> >>There is a stack of IO interface boards, including HSTs, for the HP >2100/1000 series there. >> >>Lower-right stack in this pic, 7 boards, boards have one red and one grey >handle: >> https://i.ebayimg.com/images/g/n08AAOSwjY5dg5Kd/s-l1600.jpg >> >>"HS Terminal" is discernible on one of them, and the one on top looks to be >an HS Terminal as well. >>Can't be certain about the others but they have the same size IO connector, >they may all be HSTs. >> >>HSTs are the basic RS232 & current loop, async serial-line interface >boards, 12531D, used for the console and such in the 2100/1000 series, >>going back to the early machines of the series. >> >>(HS is 'High-Speed', but that's relative to the late-60s, billed for up to >2400bps, but it is possible to operate them at higher speeds). >> >>I'd buy one for, say 60$, if someone picks up the bunch and wants to flog >one. > > > >Sigh. And here I am putting together a rack with a HP 1000 system. >Though, some of those edge connectors look corroded. > >I really would like those DtoA boards. So many! I have both a 3497A and the >3498A extender >plus a need for lots of cards for them. Plus I have the service manual with >schematics >so can repair them. > >Anyway... the seller is listed as being in Warren, Rhode Island, United >States. >I'm in Australia, and have a reshipper in the US. BUT, the reshipper is on >the west coast. > >Is there anyone on this list who lives in that area who could pick them up, >then pack and post >small sets of boards? I can afford to bid (fingers crossed), but _can't_ >afford the postage >of "90 lbs" across the continent. Let alone to Australia. > >The one existing bid, is that anyone here? > >Guy > > >--- >This email has been checked for viruses by Avast antivirus software. >https://www.avast.com/antivirus > >

6 years, 7 months

NOS old media and other stuff available

by sales＠elecplus.com

Send him an email, and he can send you a list. He is NOT interested in selling 1 or 2 boxes of floppies. He needs volume deals. I have a list of items available from a Value Added Reseller that closed several years ago and had these items in storage. All items are OEM, NOS and include LOTS of data media spanning generations (Round Reel data tapes, 4mm Cassette tapes, ????? Tape Cartridges, 35???, 5.25??? and 8??? Diskettes), Trillium and EnGenius phone equipment, various electronics components and packaging materials. Have images of many of the items available. Email netbuy at bellsouth.net and or buynetworks at gmail.com Netbuy LLC Robb Adams 386-585-5236 Cindy Croxton Electronics Plus --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 7 months

DEC RP04 service manual available

by jnc＠mercury.lcs.mit.edu

> From: Evan Koblentz > I know of two RP04 drives in the wild. One belongs to a private > collector. VCF has the other. Right, but does VCF need it scanned? Oh, one other place that might have one: the MIT MC KL10 had a couple of RP04's; when it was taken away to Scandanavia, they might have gone with it. I think that machine is now at LCM? Noel

6 years, 7 months

Cleaning an old keyboard

by jnc＠mercury.lcs.mit.edu

> From: Al Kossow >> This is documented in NASA's official history of Project Mercury, for >> which it was invented. > could you post a pointer to the document where this appears? If the reference is to: Lloyd S. Swenson, James M. Grimwood, Charles C. Alexander; "This New Ocean: A History of Project Mercury"; SP-4201; NASA; Washington; 1966 "WD-40" does not appear in the index. There's another less likely book ("Project Mercury: A Chronology", or something like that), but I can't be bothered to drag it out and look, because I'm pretty sure that's incorrect. My understanding is that WD-40 was invented to protect the stainless steel skin of the Atlas ICBM (which was often left un-painted), built by Convair. I do recall seeing this in one of my Atlas books, which is alas currently not shelved, and I don't have time to find it. FWIW, Wikipedia agrees. The rest of that post (about how it's a waxy material in a solvent) is I think correct; it certainly agrees with its original intended usage (above). Noel

6 years, 7 months

DJ11 Maintenance Manual available

by jnc＠mercury.lcs.mit.edu

> From: Pierre Gebhardt > 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 Argh! I looked in that folder, but didn't see it! (And Manx says its not online, either.) > Would be worth checking the document revision. Mine's earlier: DEC-11-HDJAA-B-D. > What is missing, however, is an engineering manual with the schematics. Well, the M7820's will be the same as in the DH11. The M7285 and M7279 are DJ11-specific, though. I was going to say that 'does anyone even have any DJ11's any more, to need the drawings' (they're like lobotomized DZ11's - the serial line config is done with jumpers!), but on looking it turns out the RICM probably has some in their -11/45's. Noel

6 years, 7 months

Cleaning an old keyboard

by trash80＠internode.on.net

I resurrected an old keyboard and mouse I like. Not wishing to gross anyone out but it looks like over time there was a build-up of oil etc from my hands etc and over time being stored away its turned to a really almost hard paste like stuff on both the mouse and keyboard. I've tried number of agents to clean it off but limited success. Any tips please. Kevin Parker

6 years, 7 months

simh, professional 350, 380

by emu＠e-bbes.com

Hi all, I saw an old version from 2006 as "xhomer" which emulates the professional 350. Was there anywhere a version, which emulates the 380? Cheers

6 years, 7 months

Wanted: Scan of RF modulator article in Sept. 1978 Radio Electronics

by wh.sudbrink＠verizon.net

Hi, I'd like to read the second part of the article found here: https://www.schematicsforfree.com/archive/file/Video/Circuits/Video%20Modula tor.pdf I don't have a real print of the magazine and my Google-Fu fails me if it's already scanned somewhere. Thanks, Bill S. --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus

6 years, 7 months

Vintage computer store hints in Minneapolis?

by jplist2008＠kiwigeek.com

Morning all; I was up in Minneapolis over the weekend and will probably be back next weekend - I was wondering where the local geeks might go for some nifty goodness (for sale or just to gander at)? When I was up there I hit FreeGeek and picked up a SCSI SyQuest EZ135 external drive and a couple of carts. I also rolled through The Ax-Man... for 3 hours because I'd never even heard of the place before and was absolutely astonished at what I'd found. (If you've never been, you _must_ go) But I thought I'd poll and see what else might be found up there? I'm mostly a non-PC collector (Sun/SGI/Digital/+ random things) - but easily amused. Speaking of, there's a set of power supply modules for a PDP at The Ax-Man on University. There were several h744s and 745s and and an h754, although one of them someone has started to pry apart and the Molex (?) connector is broken from the PCB, although the pins were still attached to the board. They were asking $9.95 for each and I wasn't willing to buy and hope they worked. Cheers; - JP

6 years, 7 months

Pro 350 for sale on Craigslist

by Wayne.Sudol＠hotmail.com

Just saw this ? https://orangecounty.craigslist.org/sys/d/laguna-niguel-vintage-dec-compute… Ad Says? Vintage DEC Computer 350 Pro System - $450 (Laguna Niguel) Vintage Digital Equipment Corporation (DEC) computer system 350 Professional ( based on PD-11 chipset) 10 MB HDD , Monitor VR-201, Printer : Letterprinter 100 , Enclosure, Extensive set of Documentation. These Items are intended for collectors who have good knowledge and experience with old computers

6 years, 7 months

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