- test-drb@ccmp.vtda.org - classiccmp.org

Collection policy was Re: No space for vinatge computers in

by dwightk.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk ---snip--- > >> different today, how can people relate to this? While there are still a few >> people who know how to make a horseshoe at a blacksmiths there will be >> nobody who knows how to run the early mainframes in 50 years, things are > >Rubbish!. Are you seriously trying to tell me that these skills can't be >learnt? I would claim that anybody who _truely_ understood a modern >machine would have no problems on an older one. The fact that very few >people understand modern computers is the problem, not that the older >machines are so different. > >-tony > Hi I think these older machines are easier to work on. Things are more exposed and excessable. Most of the newer machines one has today are not even as repairable( motherboard fails, swap out motherboard! ). Dwight

23 years

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IIfx memory

by teoz＠neo.rr.com

Anybody know where to get memory (4mb simm or better) for a mac IIfx cheap or have some they dont want. I think its 64 pin proprietary memory (also used in a specific mac printer cant recall). Its funny how apple makes proprietary memory for only 1 specific model computer (how is that cost effective?), just like the memory upgrade for my apple 4/600 PS laser (one of a kind).

23 years

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Subscription

by sipke＠wxs.nl

Hi, What is the official current subscriptionprocedure to subcribe to the cctalk list ? Sipke de Wal ---------------------------------------------------- http://xgistor.ath.cx ----------------------------------------------------

23 years

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JC 80 parts

by jmackd1＠yahoo.com

Hello Toth, Noticed you posted on the web back in Dec of 2002 you had a pallet full of JC80 parts, we are still using the JC80 here at the University of Texas, do you still have those parts? Thank you, Jeff McComas The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

23 years

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Looking to Buy

by kenny＠datexstorage.com

We are looking to buy SEAGATE, IBM AND QUANTUM SCSI DISK DRIVES If you have any for sale please let us know what you have. Thanks Datex Storage

23 years

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IBM System/36 - Advice Needed

by martinm＠allwest.net

This afternoon, I hauled home an IBM System/36 - PC (5364), complete with dedicated IBM PC (5150), Monitor, KB, cables and an IBM 4224 printer, but no documentation, all from my local Farmer's Insurance agent. The system is complete, including the "Farmers Master System Diskette". The components are badged "Farmers Insurance Group 5280Z". Googling indicates that these systems were fairly common. The system boots to the Service Control Menu, then continues the IPL to a IPL Sign On menu. Does anyone know the Service password or the Backup Service password for the Service Control Menu? Does anyone know another way into this system? I am an absolute neophyte on this system, so any help, warnings, war stories, etc. would be appreciated. Thank you, Martin Marshall

23 years

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OT? Supera and Diamond Multimedia support

by tothwolf＠concentric.net

I guess this might be slightly OT, and maybe a little bit of a rant, though lots of Diamond products are easily 10 years old or older... I just found out today that the massive archive of drivers and firmware that was on the the Diamond ftp server [ftp://ftp.diamondmm.com/] is gone. I didn't have the bandwidth to mirror it, but I sure hope someone here got a copy when I recommended months back (Modem/Supra thread) that someone archive it. The support page for Diamond products [http://www.diamondmm.com/support/diamond/] formerly contained links to files on the ftp server. It now has the following posted: S3 or Diamond Brand Support We no longer support customer service or warranty claims on any of our legacy products sold under the former S3 or Diamond brand. As we no longer manufacture these products, and have not for some time, our customer care and warranty claim call volumes related to these products are extremely low. Because of this, we made the decision to discontinue support for these products. If you are experiencing problems with your Diamond or S3 legacy product please contact an independent repair professional. We appreciate your understanding in this matter and hope that this change does not inconvenience you greatly. The above statement seems totally ludicrous, as how is "an independent repair professional" (which I think I more than qualify for) supposed to support these products without the files that were available on the ftp site? I put in a call to their technical support staff at (206) 515-1400, and when I selected option '5' for diamond products, it referred me back to the above support url, claiming that support files were available on the website. The phone system then hung up, and I called back again selecting the Supra support and 'other' products...same thing. I finally got someone on the line by selecting Supra support and the first and only product the phone system mentioned. I think it was option 4 and 1. Talk about a nightmare. Turns out, they've suddenly had a massive influx of calls from other slightly annoyed customers who still support and use all this "obsolete hardware." Personally, I don't see how hardware can be "obsolete" if it works and does exactly what you need it to. They also seemed to have no clue that older versions of firmware and such are very important when maintaining and supporting these things. The ftp server formerly contained nearly every version that had been released. Now its all gone. Some of these products were only a couple of years old too. If other hardware forums haven't had info about this yet, they probably will soon... If anyone else wants to call and ask questions, the phone number above should get you though to someone. I've asked them about returning the ftp site to its former state, as that would seem to be the best solution for everyone right now. -Toth

23 years

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FT : Sharp MZ-100

by claudew＠videotron.ca

Going to kids garage sale or goodwill....or grab it here... Its a dual floppy 8088 10mhz laptop. I am not into x86 boxes Worked last timed I tried it out. You supply power supply... Offers welcome. Trade - not interested in cash (...): 72 pin parity ram, sun sparc 20 cpu module(s)... Claude http://computer_collector.tripod.com

23 years

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Revengish URL

by pete＠dunnington.u-net.com

On May 27, 21:37, John Honniball wrote: > vassilip(a)dsl.cis.upenn.edu wrote: > > So when the BBC + Torch arrived, the genious who was responsible for > > assembling the kit, promptly added a mains plug to the power cable > > and plugged it in, feeding 240V AC to the +5 and +12V rails. > > Same thing happened at my Uni when one of the Prime operators took > home a BBC for the holidays. She had an external disk drive for it, > that plugged into the BBC's power underneath the machine (not at > all obvious). So, she went ahead and fitted a mains plug to the > three-core cable that fed the drive. Usual release of magic smoke... Ah, yes, that would be one of those drives suplied by a company who figured that you don't really need two 0V lines, and 3-core mains flex is cheap. I can add another to the "240-into-5 doesn't go" list. I ran the repair and engineering department for a large Acorn dealer/distributor. One Saturday, a customer with his son bought a BBC B, Torch Z80 with disk pack, and a high-res Microvitec monitor; well over UKP1000 in those days. He was back on the Monday, looking very sad. His son had connected everything together before finding that the "mains plug" didn't fit. When he changed it, the fuse blew, so he replaced it and tried again :-( He was very nice about it, quite philosophical, and so we tried quite hard to rescue what we could, and find second-hand parts. We salvaged one of the two drives. We repaired the monitor. We found a spare BBC B board -- the original was deemed unrepairable. The disk pack PSU was a write-off, but we got the original Beeb PSU back from the shop. The Z80 board didn't look healthy, and he let us keep that too. Eventually, we stripped every IC and some other damaged parts off the board, fitted sockets everywhere, repaired several tracks with quite a lot of wire-wrap wire and epoxy, and it became a test bed. The Z80 got similar treatment, except it didn't need track repairs, and we turned it over to a teenager who was with us for work experience. We thought it would be good (de)soldering practice. He was delighted when he ended up with a clean board, and even more so when the fully-socketed version worked at the the end of it, so I suppose some good came of it all -- he'd apparently been something of a problem to the college tutors before he discovered there was something he could actually achieve. Those Torch Z80's were a royal pain. After that incident, we told the shops not to take out or replace the BBC supply under any circumstances, and eventually Torch stopped the practice of replacing the original PSU. The Beeb SMPSU was perfectly capable of running a fully-expanded machine with a Torch processor, so using Torch's rather inferior (but more powerful) unit was not a good idea. The Torch Z80 board is about Eurocard size, fitted with a short 40-way ribbon cable, and was supposed to be mounted in the lid of the BBC B, using four PCB mounts of the type that have self-adhesive pads. They used to fall off after a while. Now you might think that's just irritating (it's certainly awkward to fit correctly) but it's more than that. When it falls, it tends to short things out. Unfortunately, the regulation on Torch PSUs is very poor when they crowbar, and when the 5V rail comes back after it's shut down, it tends to overshoot -- by about 4 volts, according to our scope. TTL doesn't like 9V. I've seen at least two Beebs destroyed that way. One of them looked fine, but didn't work -- something of a puzzle, as the owner had replaced the original Acorn PSU and we didn't know he had been using the Torch one. It just went "tick-tick-tick", as they do when they're shorted, or as in this case, detect over-current. So we put it on a bench supply, thinking either to blow off a faulty capacitor or maybe find a hot chip. No, but it drew 9 amps (a Beeb usually takes about two) and after a little while it was obvious several LS TTL chips were cooking. So we removed them. Back on the PSU, still several amps over normal. A few more hot chips after a short while. And so it went on, until all that was left was the NMOS (all of which still worked). Another expensive repair. -- Pete Peter Turnbull Network Manager University of York

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by dwightk.elvey＠amd.com

>From: "Peter Turnbull" <pete(a)dunnington.u-net.com> ---snip--- > >Not from a capacitor as a whole, but if you look inside the "black >box"... The discussion was about electrolytic capacitors. Of course >they have an insulator (the oxide on the aluminium foil anode) but they >also have an electrolyte (which is the cathode), and indeed wouldn't >(don't) work without it. It's the ability of the electrodes to conduct >electrons that give the capacitor its ability to store them. > >-- >Pete Peter Turnbull The other trick of the electrolytic is that the aluminum is slightly etched first before forming. This greatly increases the surface area and gives a higher capacitance per square inch of foil. I have a radio that was made in the 50's. I brought the capacitors in it up slowly. I've checked them on my bridge and they are all above 45% of the labeled value. The radio works fine. Dwight

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by pete＠dunnington.u-net.com

On May 25, 20:19, William R. Buckley wrote: > Steve Leach said: > > > If you could humor my electronic ignorance, what exactly > > is a tantalum cap and how does it differ from a normal > > capacitor? I was never before aware that there could be > > more to a capacitor than plates (or foil) and an > > electrolyte. How can a capacitor have a polarity? > > Not an electrolyte, an insulator. It is the inability to > conduct electrons which gives the capacitor its ability to > collect electrons. > [...] Now, by being ionic, these electrolytes > are well suited to the conduction of electron flow. This > is most definately not the kind of behavior which you wish > to obtain from a capacitor. Not from a capacitor as a whole, but if you look inside the "black box"... The discussion was about electrolytic capacitors. Of course they have an insulator (the oxide on the aluminium foil anode) but they also have an electrolyte (which is the cathode), and indeed wouldn't (don't) work without it. It's the ability of the electrodes to conduct electrons that give the capacitor its ability to store them. -- Pete Peter Turnbull Network Manager University of York

23 years

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Revengish URL

by vassilip＠dsl.cis.upenn.edu

This reminds me of a true story regarding a BBC microcomputer. This was in the early 80s when a company called Torch produced an auxiluary processor for the BBC (I think so that it could run CP/M programs). Anyway the Torch was an external box that contained its own PSU and connected via a ribbon cable with the BBC micro, which served as the keyboard/display peripheral for the Torch. Early BBCs had problems with their own PSU (it overheated), so the Torch people removed the PSU from the BBC and used another cable to supply power *to* the BBC from the Torch box. Unfortunately, they used a cable that looked like a power cable. So when the BBC + Torch arrived, the genious who was responsible for assembling the kit, promptly added a mains plug to the power cable and plugged it in, feeding 240V AC to the +5 and +12V rails. I looked at that mainboard afterwards and a lot of tracks had melted! **vp

23 years

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Where have all the Selectrics gone?

by jforbes2＠mindspring.com

> From: "Mike Ross" <mross666(a)hotmail.com> > IBM made a bunch of printer terminals based around the Selectric typewriter > - 1052, 2740, 2970 etc. Look in any old copy of BYTE, and you'll also find > several vendors were selling 3rd party terminals based around IBM > Selectrics, often converted for ASCII/RS-232c operation, as teletype > alternatives. > > Where have they all gone? (I appreciate, from what I've heard, that many > folks who used them in anger would reply 'I don't know, I don't care, good > riddance!') Early DECwriters are not uncommon. Teletypes are (almost) ten a > penny, ASR33s show up frequently enough on ebay, I have several. > > But the only Selectric based unit I've *seen* in over ten years of > collecting is a 2970 Reservation Termainal (see > http://www.corestore.org/2970-1.jpg ) which I was offered a year or so ago. > It needs a fair bit of TLC, and it's a print-only device; it can receive > data from a host and print it, but not send anything back from the keyboard. > > I'd love to get a bidirectional equivalent to use as an 'authentic' terminal > for a 360 emulator I work with... any clues? Can anyone recommend a > Selectric repair shop? No way I want to try to fettle something THIS > mechanically-intimidating myself! Look at my sig...you'll see where they've all gone :) I have a dozen or so Selectric, Selectric II, and Selectric III typewriters, mostly in various states of sticky disrepair. Actually, I don't have any Selectric terminals, although I do have a Selectric Memory Typewriter. My brother worked at a Byte Shop in the late 70s, and recalls having either converted a Selectric or making a conversion work. I do have a manual from 1962 titled "IBM Customer Engineering Manual of Instruction, I/O Printer, (Modified IBM Selectric), which shows the glorious workings of this fascinating machine...the manual has lots of text and diagrams explaining the Selectric mechanism, but not much in the way of photos showing the solenoid mechanisms. We were thinking a few years ago of trying to rig up a homebrew conversion of one of my typewriters, but never got round to it. But I did (in 1999?) see a conversion kit sell on ebay...and I was foolish enough to not buy it. -- Jim Visit the Selectric Typewriter Museum! http://www.mindspring.com/~jforbes2

23 years

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Where have all the Selectrics gone?

by mross666＠hotmail.com

Subject: RE: Where have all the Selectrics gone? Date: Sun, 25 May 2003 00:36:49 -0400 Reply-To: cctech(a)classiccmp.org >Are these based on a Selectric? >http://www.govliquidation.com/auction/view?auctionId=206563&convertTo=USD Yes!!!! Exactly the kind of thing I'm looking for. Good catch! You can tell they're the 'I/O Selectric' by the extra-deep chassis, compared with a standard Selectric typewriter... no idea what interface they might be, but what the hell... Guess it's a bid on all 35 of them, or none at all... anyone else in with me for some? Mike http://www.corestore.org

23 years

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Gummint VAXen (was Re: More gummint surplus goodies)

by classiccmp＠crash.com

John Allain wrote: . > Not only that but I believe that Raytheon would rebuild Vaxes > from the circuit description using advanced SMD and hybrid > chips to make them something like 1/4 the size and weight > of the non-gov. models. Wow - now that would be something to add to the collection! Does anybody on the list want to confess to owning such a beastie? If so, please, don't be cruel - post a link to some pictures. --Steve. smj(at)spamfree.crash.com (lose spamfree to get through, m'kay?)

23 years

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QBUS board ID time

by pete＠dunnington.u-net.com

On May 27, 16:34, Greg Elkin wrote: > Got given a couple of "Dyna 5" BA23-size QBUS enclosures a bit ago - > a bit tatty (rusted & dirty, must try to get a sandblaster or > something to see if they can be rescued) > just looking through the cards, can't ID this one yet : > > > dual height QBUS > Baydel (http://www.baydel.com) logo on the handles, "Baydel ltd" "CCK > 2789" "B01079 iss4 C1984 CTS-11" on the board. > Any ideas? Didn't turn anything usefull up on Google, I've emailed > Baydel support for a laugh... Baydel were (are?) latterly quite well known for RAID systems; prior to that they made (amongst other things) QBus floppy controllers, to connect to SA800/850 drives. I have a couple of single-density ones that emulate an RXV11 or a pair of RXV11s. I'd guess this board is an emulation of an RXV21, to connect to SA800/850 drives. Power it up, and see if it responds to the RXV21 addresses. BTW, I found Baydel quite helpful when I wanted some information about mine (labelled F11-311) -- but that was a decade ago and I don't know if the same technical staff will still be there. -- Pete Peter Turnbull Network Manager University of York

23 years

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zenith model ZFL-184-01 LAP TOP

by SRATPHESSA＠aol.com

is it any good

23 years

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Tektronix 4052

by tdodds＠attglobal.net

Hello, I know that your request is over six months old, so you may no longer be interested. Did you find the information you need on the 4052? I have a 1981 Tektronix catalog that has a one-page summary of the characteristics of this device. Let me know if it is useful to you and I will send you a scanned copy. Tom Dodds 869 Milwaukee St. Denver, Colorado 80206 Info request : Tek 4052 Hans B Pufal cctech(a)classiccmp.org Tue Oct 8 10:51:19 2002 Previous message: OSI disk basic disk Next message: scsi drive + misc. other stuff (free pentium machines & 10 year rule/windows) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ---------------------------------------------------------------------------- ---- We are exhibiting a Tektronix 4052 computer and I am looking for some info on the beastie: Year of introduction Price at introduction Memory size Processor Clock frequency Tape capacity Tape speed Screen resolution The web seems somewhat reluctant to divulge this info and I'd appreciate your help. Regards, -- Hans B Pufal

23 years

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openvms... another question

by jwest＠classiccmp.org

Ok, I know NOTHING about openVMS. However, this just came up... A friend of a friend offered me what he says is a complete set of OpenVMS media. No manuals, just the media. Several questions: >From what I understand, isn't there some type of hobbyist free license for openvms? If so, not sure why I should grab the media from him if I can just download it. Or is there a value to getting the media from him, as to it giving me the ability to purchase a license transfer or something... in short, is there a special reason getting "real" media is desirable? Lastly... he said it runs on vax's and pdp's. Not sure if he knows what he's talking about, so I'll ask here. Could this run on my 11/44? Thanks for any enlightenment! Jay West

23 years

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Toshiba T1200 battery pack

by bglazar＠hotmail.com

>What is the polarity of the 12V DC connector on the back of the machine? The middle pin is positive and is commond to battery connector. _________________________________________________________________ Help STOP SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by stevenaleach＠mac.com

Well, I must say I'm rather amazed at how quickly I got a response. Within an hour of my post, two individuals (Steve Thatcher and Scott LaBombard) both provided the information on the tantalum cap, and I found the parts at DigiKey. Thanks guys! I'm so glad to see some hope at getting the Altair back up and running. When it sizzled popped and smoked, it was like an old friend had died. If you could humor my electronic ignorance, what exactly IS a tantalum cap and how does it differ from a normal capacitor? I was never before aware that there could be more to a capacitor than plates (or foil) and an electrolyte. How can a capacitor have a polarity? Another question, does anyone know where I can find a replacement for the two position front panel switches on the Altair which are marked "AMERICAN U.S.A ST1-1" These are 2 pos 3 contact switches, and I've not been able to find anything exactly the same dimensions. I am hoping that this is some standard switch and I'm just not aware of it :-) Also, I've come across rumers of Altair manuals online in PDF format. Does anyone know where I could find such a thing? I'm sure I'll have more questions once I get the poor machine put back together and start trying to figure out the disk drives and controllers :-) The machine was stored for over seven years in a barn wrapped in plastic bags (not my decision! Don't burn me at the stake!) I wonder how many more surprises I'm in for?

23 years

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Just bragging :)

by francois＠auradon.com

Went to a flea market today and I picked up and HP 29C in excellent condition for $2.00 That's it but I just had to brag so there :) Thank you Francois

23 years

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Practical Electronics CHAMP/Tangerine Microtan 65

by david_comley＠yahoo.com

Many years ago Practical Electronics in the UK published the design of a microprocessor-based system called the CHAMP. If I remember rightly it was built on Veroboard. I remember reading the articles in the school library and wishing I could build one. Did anyone ever build one of these ? Do the plans still exist anywhere ? Also, I'd like to re-acquaint myself with the Microtan 65 which was one of the first systems I ever owned. Are there any systems still in existence ? Dave. The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

23 years

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Where have all the Selectrics gone?

by n8uhn＠yahoo.com

What about the serial or parallel line printers that used a type band/belt? i used to see alot in the add's for pc's now thier gone too. i wouldn't mind finding one for the pc just to hear the noise again;) i remember the operating noises they made paper clamp,line feed and the hammers hitting the paper - the order of printing was(from the back of the printer to the front of the paper) hammer's,paper,ribbon then type band. Bill Message: 1 Date: Sat, 24 May 2003 18:33:01 -0700 From: J Forbes <jforbes2(a)mindspring.com> To: Cassic Computing <cctech(a)classiccmp.org> Subject: Re: Where have all the Selectrics gone? Reply-To: cctech(a)classiccmp.org > From: "Mike Ross" <mross666(a)hotmail.com> > IBM made a bunch of printer terminals based around the Selectric typewriter > - 1052, 2740, 2970 etc. Look in any old copy of BYTE, and you'll also find > several vendors were selling 3rd party terminals based around IBM > Selectrics, often converted for ASCII/RS-232c operation, as teletype > alternatives. > > Where have they all gone? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by pete＠dunnington.u-net.com

On May 25, 22:05, Steve Leach wrote: > If you could humor my electronic ignorance, what exactly IS a tantalum > cap and how does it differ from a normal capacitor? I was never before > aware that there could be more to a capacitor than plates (or foil) and > an electrolyte. How can a capacitor have a polarity? Almost all electrolytic caps are polarised. In principle, a tantalum capacitor is just like an aluminium electrolytic, only using a more exotic metal (tantalum pentoxide has a dielectric constant about 4-5 times higher than aluminium oxide) and a solid electrolyte. The anode is the foil (or bead, if it's sintered tantalum tantalum), the oxide layer on it is the dialectric, and the electrolyte is the cathode. Passing current from cathode to anode will build up the oxide layer, the other way will break it down. From a chemist's point of view, putting electrons into the cathode and taking them out of the anode makes some of the metallic aluminium (Al) ionise into Al+++, and if there are oxygen ions (O--) adjacent, it forms alumina (Al203) -- standard RedOx reaction, exactly the same as anodising aluminium for protection. You have to maintain the polarity to maintain the oxide layer; if you reverse it the electrons will break down the oxide layer. The aluminium ions would gain electrons, the oxygen ions would lose them, the alumina becomes aluminium and oxygen, and then you have no more highly-insulating aluminium oxide dielctric. Think of the aluminium-alumina junction as a junction diode, with a very high resistance in one direction and a very low resistance the other way. There's a brief description of construction at http://www.chipcenter.com/eexpert/akruger/akruger006.html -- Pete Peter Turnbull Network Manager University of York

23 years

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Software for NCD 17c Xterminal

by julesrichardsonuk＠yahoo.co.uk

Hi, > I got a nice NCD 17c X terminal a while back, but I don't > have the server software to download to it. Does anyone > have such software or a pointer to where to get it? If you just need the boot image, I think you're looking for a file called "Xncd17c" - I use Xncd19c for my 88k-based xterm (or did, last time I used it for anything!) These used to be freely available on ftp.ncd.com (up until 2 years ago for sure) in their own "older units" directory tree but seem to have vanished. However a quick google returned: http://www.stat.wisc.edu/p/stat/tftpboot/cs/Xncd17c ... which may be exactly what you need. Set up a tftp server somewhere with the image on and you're away :) cheers, Jules __________________________________________________ It's Samaritans' Week. Help Samaritans help others. Call 08709 000032 to give or donate online now at http://www.samaritans.org/support/donations.shtm

23 years

1
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Tektronix 2430A overshot (overrange) can't pass self-diagnostics

by cli＠pholink.com

Hi: The Tek 2430A input is "50 Ohm 5V RMS". I put 200V in CH1, then smell something. after that the 2430A can't pass the Extended-Diagnostics! (CH2 is OK). Does anyone know which component was burnt away? thanks Li 0000 Extended -Diagnostics 1000 Sys-Rom Pass 2000 Reg Pass 3000 Sys-Ram Pass 4000 FPP Pass 5000 WP Pass 6000 Cksum-Nvram Pass 7000 CCD Pass 8000 PA Fail 8100 Offset Fail 8110 Norm-SP Fail 8111 CH1 Fail 8112 CH2 Pass 8120 Norm-FISO Fail 8121 CH1 Fail 8122 CH2 Pass 8130 ENV-SP-slow Fail 8131 CH1 Fail 8132 CH2 Pass 8140 ENV-FISO-slow 8141 CH1 Fail 8142 CH2 Pass 8200 Pos-Agin Fail 8210 CH1 Fail 8220 CH2 Pass 8300 Balance Fail 8310 50mV Fail 8311 CH1 Fail 8312 CH2 Pass 8320 20mV Fail 8321 CH1 Fail 8322 CH2 Pass 8330 10mV Fail 8331 CH1 Fail 8332 CH2 Pass 8340 5mV Fail 8341 CH1 Fail 8342 CH2 Pass 8350 2mV Fail 8351 CH1 Fail 8352 CH2 Pass 8400 Gain Fail 8410 50mV Fail 8411 CH1 Fail 8412 CH2 Pass 8420 20mV Fail 8421 CH1 Fail 8422 CH2 Pass 8430 10mV Fail 8431 CH1 Fail 8432 CH2 Pass 8440 5mV Fail 8441 CH1 Fail 8442 CH2 Pass 8450 2mV Fail 8451 CH1 Fail 8452 CH2 Pass 8500 INV-Gain Fail 8510 50mV Fail 8511 CH1 Fail 8512 CH2 Pass 8520 20mV Fail 8521 CH1 Fail 8522 CH2 Pass 8530 10mV Fail 8531 CH1 Fail 8532 CH2 Pass 8540 5mV Fail 8541 CH1 Fail 8542 CH2 Pass 8550 2mV Fail 8551 CH1 Fail 8552 CH2 Pass 8600 Var-Max Fail 8610 CH1 Fail 7620 CH2 Pass 8700 Attenuator * Pass 9000 Trigs Fail 9100 Offset Fail 9110 A-trig Fail 9111 CH1 Fail 9112 CH2 Pass 9113 Slop Fail 9114 Ext1X1* Pass 9115 Ext1X5* Pass 9116 Ext2X1* Pass 9117 Ext2X5* Pass 9120 B-trig Fail 9121 CH1 Fail 9122 CH2 Pass 9123 Slop Fail 9124 Ext1X1* Pass 9125 Ext1X5* Pass 9126 Ext2X1* Pass 9127 Ext2X5* Pass 9200 Gain Fail 9210 A-trig Fail 9211 CH1 Fail 9212 CH2 Pass 9213 Ext1X1* Pass 9214 Ext1X5* Pass 9215 Ext2X1* Pass 9216 Ext2X5* Pass 9220 B-trig Fail 9221 CH1 Fail 9222 CH2 Pass 9223 Ext1X1* Pass 9224 Ext1X5* Pass 9225 Ext2X1* Pass 9226 Ext2X5* Pass 9300 Repet* Pass

23 years

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[Fwd: [B205] Re: Reel Tape for B9 Builders]

by bfranchuk＠jetnet.ab.ca

you guys may need 3 inch tape some day too! -------- Original Message -------- Subject: [B205] Re: Reel Tape for B9 Builders Date: Mon, 26 May 2003 04:24:01 -0000 From: "Stan Brewer" <brewers(a)ftc-i.net> Reply-To: B205(a)yahoogroups.com To: B205(a)yahoogroups.com There is one last chance to buy a 3inch reel tape for your B9. I have ten tapes, and once they are gone, thats it. See ebay Item # 3026315320 for a dutch auction. Stan --- In B205(a)yahoogroups.com, "Stan Brewer" <brewers@f...> wrote: > Are you building a full sized B9 robot and need a 3 inch > reel to reel tape for the programming bay? > > Have you filled up the tape on your current B9? > > Do you just want some part of a B9? > > If so, check out the ebay auction Item # 3024945469. > > Stan ------------------------ Yahoo! Groups Sponsor ---------------------~--> Get A Free Psychic Reading! Your Online Answer To Life's Important Questions. http://us.click.yahoo.com/Lj3uPC/Me7FAA/CNxFAA/SyTolB/TM

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by stevenaleach＠mac.com

>What type of switches are they? Toggle? Rotary? Both C&K and Alco both >manufacture a huge variety of switches, one of which is bound to be a very >close, if not an exact replacement. Are the original switches not >repairable? These are toggle switches with two closed positions and three contacts, ie two on positions and a common ground in the middle. My problem is finding the correct dimensions, ie spacing between connectors as well as height above the board and the length and width of the "neck" to protrude through the panel..

23 years

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Collection policy

by mranalog＠attbi.com

"TeoZ" wrote: > Like I said before museums have static displays for reasons of > power requirements, lack of personnel that can run the machines, > spare parts that are expensive and hard to find, and the fact > that a screwup during operation could actually destroy one of > the few remaining examples (or only one). Most devices in a > museum are there for either art or function (or combination). And then some museums don't. There are many techniques to avoid static displays. * Rotating the equipment on a turntable with the back open. * Recreating really old equipment or high wear parts. * Equipment displays with interactive java simulation of the equipment running nearby. * Faking the output display on unpowered equipment with the 'PC behind the curtain'. * Or just using equipment that is still some what available. And don't forget the importance of the the right lighting and sound effects. :) I am currently trying to help a gentleman restore a EAI TR-48 desktop analog, from the early 60s, on display in the Retro Beep Computer Museum at Bletchley Park. He wants to run a repetitive simulation for visitors to see. I asked him if the recreated Colossus is actually operated for vistors to the museum. He replied: > The Colossus is running for the visitors to see; > however, there is not a guided viewing with everything > explained and messages decoded etc. You can see the > paper tape loop flying round the bedstead and there > is an oscilloscope for the visitors to see the read > in bit sequence. Also, the machine is behind a wall > with windows because all the frames are open +/- 100 > volts DC and thus not safe for the public to directly > approach. Also, there are various items for everyone > to read on display to explain things. > There is a guided tour of the site with explanations > of the code breaking centres; the Colossus bit is > unguided. I also asked about interactive displays. He reply: > You get to play with the enigma machine I think and > there is a bit of code breaking you can do. > Also, in the Retro beep museum, there are several old > digital personal machines to play with; including Sinclair > spectrums, BBC computers etc ? not very exciting for an > engineer but the kids love them. Also there is a rare > Apple Lisa with original disc system. As well as the > Elliott 803 there are a couple of DEC machine, one of > them being an old original (with front doors made from > kitchen worktops ? as specified by DEC?s founder). He also sent me links to some wonderful interactive web pages, including the 'Virtual Turing Bombe', the 'Virtual 3 wheel Naval Enigma', the 'Virtual 3 wheel Army/Air Force Enigma' and the 'Virtual Colossus'. ENIGMA, BOMBE, and COLOSSUS Links Codes and Ciphers in the Second World War http://www.codesandciphers.org.uk/ Great link on the Enigma code, the Turing Bombe, and on the Colossus Click on Tony Sale's reconstruction of Enigma decipherment for the film Enigma or go directly to this page http://www.codesandciphers.org.uk/enigmafilm/index.htm Making the Enigma ciphers for the film "Enigma" by Tony Sale Or if you don't want to go through the explaination of the Enigma code and how it was broken, you can go directly to these interactive web pages http://www.codesandciphers.org.uk/enigmafilm/bombe/bombe1.htm Virtual Turing Bombe by Tony Sale http://www.codesandciphers.org.uk/enigmafilm/emachines/enigman.htm Virtual 3 wheel Naval Enigma by Tony Sale http://www.codesandciphers.org.uk/enigmafilm/emachines/enigma1.htm Virtual 3 wheel Army/Air Force Enigma by Tony Sale Or try http://www.codesandciphers.org.uk/lorenz/rebuild.htm The Colossus Rebuild Project which links to http://www.codesandciphers.org.uk/virtualbp/fish/vcolossus.htm Virtual Colossus by Tony Sale And the Bombe Rebuild Project http://www.jharper.demon.co.uk/bombe1.htm --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog =========================================

23 years

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Software for NCD 17c Xterminal

by djenner＠earthlink.net

I got a nice NCD 17c X terminal a while back, but I don't have the server software to download to it. Does anyone have such software or a pointer to where to get it? Thanks, Dave -- David C. Jenner djenner(a)earthlink.net

23 years

2
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PDP 11/34 rebuild

by pete＠dunnington.u-net.com

On May 25, 17:32, Greg Elkin wrote: > The 11/34a I collected recently (BA11-L chasis, H777 PSU) and had > difficulty getting to power up is in better shape now that it's had a > good clean ; backplane inspected and all the dust & debris removed > from its slots (via "fart in a can", ie compressed air :), the cards > have had their edge connectors cleaned (india rubber) to be nice and > shiny. > > Switching to DC ON, the fans whirr happily and the front panel now > has "DC ON" and "RUN" LEDs on, with 000000 on the 7seg LEDs. > > If I try to halt (keypad CNTRL + HLT/SS), the RUN LED stays on and > BUS ERR LED also comes on. FAQ. This is the result of having a 9302 terminator, whichg asserts SACK, and a missing NPR jumper somewhere. Either you have a card missing, or you've put a card that doesn't pass NPR into a slot where previously there was a card that did (or you've put a small grant card where you should have a full-size one). Ethan mentioned this in response to one of your posts recently, and Tony (on more than one occasion) explained in detail why this has the effect it does. http://www.classiccmp.org/pipermail/cctalk/2003-May/022031.html http://www.classiccmp.org/pipermail/cctalk/2003-May/022051.html Don't feel *too* bad about it, I got caught myself with that, once. -- Pete Peter Turnbull Network Manager University of York

23 years

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!HELP!! ALTAIR BLEW SMOKE!!!

by stevenaleach＠mac.com

I just retrieved an Altair 8800B from long term storage. I blew away the dust, checked for loose connections, and finally powered it up. Lights flickered to life, and then smoke poured from the front panel. I pulled it apart, and found a very crispy capacitor number C4 on the front panel card. My first problem is that this capacitor is so crispy that I have no way of determining the proper value. It is (was) connected to a voltage regulator marked "F 79MO8 AUC 7535"

23 years

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Trenton Computer Festival

by cb＠mythtech.net

>I wish I'd picked up one of the 68k Apples. I'm sure >the Hamvention will have scads of them though. Any particular model you are interested in? I have some extra 68k Macs here, maybe I have an extra of a model you are looking for -chris <http://www.mythtech.net>

23 years

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ICL 2950

by classiccmp.org＠irrelevant.fsnet.co.uk

Hmm... Having seen this on eBay: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=2731022229&category=12… the nameplate from an ICL 2950, weighing over 2Kg alone, and had my curiosity nudged, I was wondering if anybody knew of any pictures of the beast itself? A quick google found me a bit of info, but no pics yet. Hmm.. I've got a nameplate stuck to a 5.25" disc box in the cupboard from a Ferranti "EWTS" system (Early Warning [Tracking|Training] System, I forget which, and google doesn't help at all) ... Picked it up while I was an apprentice there - now that was fun, wandering round the factory, about 1982/3 - I seem to recall computer generated ships and stuff on one system. Amazing graphics for the time. It's a shame how little of the old stuff still exists.. I also used to "play" on a Data General Nova, must have been about 1980, at the college my Dad taught at; I sometimes wonder whatever happened to that.. Rob.

23 years

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Sony model OA-D34V-22 floppy drive

by cb＠mythtech.net

>ie I found a couple of new in the bag Sony model >OA-D34V-22 floppy drives. Anybody know what these go in, I am thinking just >the 128k, but one of the web hits says Lisa 2. If you are interested in unloading one of those Sony drives, I'd be happy to take one. I have an original external 400K drive for the Mac, and its drive it dead. IIRC, it is the same drive as used in the 128, so if you wanted to unload a spare, I'd love to get my external drive working again. -chris <http://www.mythtech.net>

23 years

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Default E-Mail Address Change

by jhfinexgs2＠compsys.to

I am now using this e-mail address for all incoming e-mail. If convenient, please change the e-mail address that you use when you send me private e-mail. Note that all of the recent e-mail address will still be active for about a month, so if you don't do the change immediately, it will not be a problem. PLUS, this is a test that everything is working properly. The volume of spam finally became too large! Sincerely yours, Jerome Fine -- If you attempted to send a reply and the original e-mail address has been discontinued due a high volume of junk e-mail, then the semi-permanent e-mail address can be obtained by replacing the four characters preceding the 'at' with the four digits of the current year.

23 years

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Where have all the Selectrics gone?

by swtpc6800＠attbi.com

I got rid of mine at a garage sale in about 10 years ago. (Before I started restoring my junk.) I had a Trendata1000, which was similar to the IBM 2741. It had a real IBM Selectric Terminal with Trendata's custom electronics. Many members of The Northwest Computer Society (Seattle) bought refurbished Trendata1000s from a local Computer Land store for about $900. Here is a photo of my Selectric Terminal and my SWTPC system in 1978. http://www.swtpc.com/mholley/MySystem/MySystemPhoto.htm I still have the IBM reference manual for the 2741 Communitations Terminal. It is 20 pages on how to write a driver for the 2741. I also have the documentation on how to connect it to a SWTPC 6800 with no special hardware. I normally used it for a printer but it also worked as a terminal. Here is a description of my computer that I wrote in 1978. http://www.swtpc.com/mholley/MySystem/MySystem.htm Michael Holley www.swtpc.com/mholley

23 years

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PDP-7

by toresbe＠ifi.uio.no

We have 8 warehouses stuffed with mainframes and minis. Around 120 of them in total. This belongs to the Norwegian Museum of Science and Technology, and with so many machines, there's BOUND to be a -10 there too :). On average, the museum recieves a query for pickup once a week. They also ran a mainframe on public display 15-20 years ago, but this was a Norwegian machine (NORD-1 i think, brilliant machine) and the people who knew about it didn't have the time it took to keep the mainframe going. This machine has been upgraded to run PDP-9 software, and has a switch on the front panel named "USE" with the options 7 and 9. It also had a homemade Automatic Priority Interrupt, nicknamed "Poor man's API". It has an oscilloscope display, two TU55 tape drives hooked up to a 550 tape controller, and the EAE (Extended Arithmetic Element). Picture at http://tore.nortia.no . Yes, we have a full set of schematics, except for one board (and with godly precision, this is the one we need), the Teletype Interface Card, seated inside the teletype. It is numbered 1818(twomoredigits). If I restore this -7, the Museum might let me inside one of their warehouses, and maybe restore a timesharing system, like, for instance, a -10. But, I'm going to keep focused on this task (for now ;) My dream has always been logging on a timesharing system with a VT terminal. IF the warehouse has a 15 in it, i'll ask them very nicely for a TC15. Who knows. We do have tons of -15 documentation (ask me not why) at the University, and even some -15 OS DECtapes. Thanks a bunch!! -Tore On Fri, 23 May 2003, Robert Garner wrote: > Tore, > > Congratulations on your commendable project! > I've sent your msg to some old DEC'ies would might be able to help. > > I have a Type 550 DECtape controller and documentation, > which was used in the PDP-1, 4, and 7. > > Also have many system module boards, in case you need spares. > (I still need to inventory them.) > > Do you have schematics for the 7? > (The Computer History Museum here may have a set.) > > - Robert > > p.s. I have a PDP-15/10E. Looking for a TC15 (DECtape controller). > > p.p.s. I heard there was a PDP-10 (KA-10) somewhere in Norway too. > Do you know anything about this? > > ______________________ |Tore Sinding Bekkedal| |toresbe(a)ifi.uio.no | |+47 91 85 95 08 \_________________________ |"Sure, so life's a bitch. But she's *my* bitch.| ------------------------------------------------/

23 years

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Vaxen

by Anthony.G.Manzo＠mail.sprint.com

Hello, Are your VAX still available to a good home? I have a need for an 11/750 and tape units. Thanks in advance for your reply. Sincerely, A.G. Manzo

23 years

2
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Coleco

by snickers48180＠yahoo.com

Hi, I saw a forum on line and your email was there. I was wondering if you could solve my problem. When I turn on system, the screen says turn off game before inserting cartridge. It does have the coleco logo so I know it has power and rf is working. I did what it said and I also hit the reset button but I get the same screen. I also cleaned the contacts on the cartridges. Do you have any idea what is wrong? Thank you for your time, Snickers48180(a)yahoo.com The New Yahoo! Search - Faster. Easier. Bingo.

23 years

2
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Interesting tape reader on eBay

by vcf＠siconic.com

This is an odd reader made by Tally(?) http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2730202301&category=1247 Worth a look. This is mostly a heads-up for the UK folks since that's where it is. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years

2
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Practical Electronics CHAMP/Tangerine Microtan 65

by dwightk.elvey＠amd.com

>From: "ben franchuk" <bfranchuk(a)jetnet.ab.ca> > >David Comley wrote: > >> Since you mention it, I had been thinking about >> designing and building a processor from scratch from >> TTL devices. I am slowly accumulating TTL chips as I >> come across them at hamfests and things. Perhaps it's >> time to put pencil to paper. >> >> Of course I could take the NASA Apollo Guidance >> Computer approach and build everything welded-cordwood >> style out of NOR gates. > >Nope that used lots of REAL ( expensive ) TTL. >The neat part of that was the CORE memory used. > >Any how a real TTL computer is about 4+ large >logic cards. Control card, alu card, memory card >and serial I/O card. The mother board is bus >and front pannel logic. >I am doing a 20 bit CPU with about 125 chips total >in the computer and front panel. About 50? >more chips for memory and serial i/o. > >http://www.jetnet.ab.ca/users/bfranchuk/ldp/ldp1.html >Ben. > Hi All make the assumption that you must make 8 bit/16bit or, in your case, 20 bit. One can make a 1 bit alu that can have data width controlled by instruction. It may not be fast at math but much processor time is consumed just looking at true/false. If your model doesn't require passing data through the alu for mem/mem and mem/io moves, a single bitter makes sense. ( My Nicolet is a 20 bit machine. ) Dwight

23 years

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Kaypro Corp. or Non-Linear Systems

by DABIGDOG143＠cs.com

In response to the question of which came first, Non-Linear Systems or, Kaypro Corporation. I worked in the purchasing department of both companies during the 1980s. Kaypro Corporation was a division of the parent company Non-Linear Systems which was established in the 1950s by Andrew Kay, who was the innovator of the digital volt meter. In the early 1980s, Non-Linear Systems began building the Kaypro portable computer after Kay's Son-in-law, Jonathan Badder, a local architect in partnership with Kay's Daughter Janice Kay, expressed a desire to have a portable computer to take out to job sites. When the Kaypro portable computer became an overnight success and far eclipsed the volt meter business, Kay established the computer division known as Kaypro Corporation. Both products were manufactured simultaneously at the Solana Beach, California location at 533 Stevens Avenue, near the Lomas Santa Fe exit of Interstate 5. When I joined the Company in early 1983 we went from about 50 employees to over 500 within a year. Andrew Kay was a very interesting and forward thinking employer, hence the name of his original company Non-Linear Systems, since he prided himself on non-linear thinking. He was a very health conscious individual, and had a juice and salad bar installed, which all employees could dine at for only a dollar. He tried to treat everyone as extended family, and believed that a work environment that incorporated nature in it's design would produce better work. Therefore, every office had windows in front and back, with a row of trees and grass between each building. It required some considerable walking to negotiate around the plant, but he believed that walking promoted good health. He also was very interested in personal intellect, and in the early stages of Kaypro, everybody had to take a sort of IQ test that he designed and administered. He also made versions of the Kaypro that were marketed as the "Tutor Computer" that were a learning aide for children. It was a fun place to work in the early days, with a very young average employee age. We were encouraged to work hard, and to play hard. Lots of parties, barbecues, intramural sports teams, and the like. It was fun to go to work everyday. During the push to increase shipments before the Company's initial public stock offering, we received some very generous bonuses, including a Christmas bonus equal to a month's salary, which we received around December 15th. In the latter 1980s the company was plagued by poor quality, serious inventory management problems, a revolving door on upper management that included a long parade of self-impressed no-nothings that couldn't break free of their linear thinking, and a serious lack of continued product innovation. After the big boys like IBM jumped on the bandwagon of the PC and laptop market, Kaypro just couldn't compete. All these factors and a few more, including the employment of Kay family members in key positions that did not have the capabilities of founder Andrew Kay, eventually led to the demise of Kaypro. I think that the business section writer for the San Diego Union Tribune said it best when he penned the phrase "Too many Kays and not enough Pros." Garr Farrell

23 years

2
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Tube logic (was: HP nixie tube module)

by jforbes2＠mindspring.com

On Tue, May 20, 2003 at 04:24:22PM -0500, Bill Richman wrote: > All I know is they were used in counters. These have a binary to > 1-of-10 decoder made out of photoresistors and neon bulbs (!) in > the black box. It's not a HV supply like he guessed. > > It should be possible to make a clock but he'll have to modify some > of them to reset before the usual cycle of 0-9. Resetting at > 23:59:59 is probably harder and would take some kind of external > logic. > > They already have a feedback to make them reset after 9 instead of > counting to 15 - it just has to be modified. > > On the other hand if he wants to make a clock, nixies are cheap > and it might be better to just leave the counter modules as-is and > use some logic more suited to counting the time (which is not > 10-based). I have a tube digital clock, which I made out of a Beckman Berkeley counter. The counter uses decade modules, each with four tubes used as flip-flops, and ten neon lamps which display the count on a numbered 0-9 plasic window. The HP modules work pretty much the same way as the Beckman tube modules, although the binary to decimal decoding scheme is different in that it uses light and photoresistors instead of resistor networks. http://www.mindspring.com/~jforbes2/tubeclock/index.html shows my clock. The counter modules could possibly be used as the basis for a tube computer...maybe. I have a bunch of extra modules. I believe my brother has the schematic for the HP counter that uses the nixie modules, and he has one of the HP counters. -- Jim Visit the Selectric Typewriter Museum! http://www.mindspring.com/~jforbes2

23 years

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Revengish URL

by mail.list＠analog-and-digital-solutions.com

He/they have a couple of pages related to Nixie Tubes and building clocks from them. Display and counting tubes http://www.electricstuff.co.uk/count.html Build a Nixie Tube Digital Clock http://www.electricstuff.co.uk/nixclock.html At 02:03 PM 5/22/03 +0100, you wrote: >Those picture are all very interesting, but it's the results - or even >better the doing - that is much more interesting to see... > >http://www.electricstuff.co.uk/esd.html! > >paul > >-----Original Message----- >From: Roger Merchberger [mailto:zmerch@30below.com] >Sent: 21 May 2003 18:04 >To: cctalk(a)classiccmp.org >Subject: Re: Revengish URL > > >Rumor has it that John Lawson may have mentioned these words: > > This is diabolical - evil - reprehensible - unconconsionable - > >sick/twisted - dangerous - damn funny. > > > >http://www.fiftythree.org/etherkiller/ > > > >For those who eschew browsers - it's a series of pictures of all the usual > >computer and networking connectors - - - spliced onto AC Mains cords. ;{} > >They missed one -- True Story: > >I had a lady walk into our store and said she needed a special cable for >her Mac, but didn't know exactly what it was. I showed her several cables >from our stock, and she verified the port this cable was supposed to plug >into was the USB port, but she was *positive* the other end was supposed to >plug into the wall. > >I was [evil ascii grafic follows]: > >===>||<=== > >*this close* to saying "I'd be *more* than happy to wire that up for you, >ma'am!!!" > >Imagining her plugging *that* bastage in... that gave all of us here at the >shop quite a chuckle for a good long time... > >Laterz, >Roger "Merch" Merchberger > >-- >Roger "Merch" Merchberger -- sysadmin, Iceberg Computers >zmerch(a)30below.com > >What do you do when Life gives you lemons, >and you don't *like* lemonade?????????????

23 years

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Revengish URL

by jpl15＠panix.com

This is diabolical - evil - reprehensible - unconconsionable - sick/twisted - dangerous - damn funny. http://www.fiftythree.org/etherkiller/ For those who eschew browsers - it's a series of pictures of all the usual computer and networking connectors - - - spliced onto AC Mains cords. ;{} zzzzzzzzzap - what's that *smell*???? Cheersz Nick Tesla

23 years

7
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Sudden stale message dump

by jpl15＠panix.com

I just got 17 messages in a chunk, from the one I've forwarded below onward - I wonder who along the way has been storing traffic in it's cheeks... ? Note the date/time stamping - ---------- Forwarded message ---------- Date: Wed, 21 May 2003 16:12:41 +0100 From: "Hills, Paul" <Paul.HILLS(a)landisgyr.com> Reply-To: cctalk(a)classiccmp.org To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> Subject: RE: Practical Electronics CHAMP/Tangerine Microtan 65 >I still have my ZX80 which preceded the Microtan. I Cheerz John

23 years

1
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PDP7

by Innfogra＠aol.com

Hi; The lab where it is at is closed and the current super is on vacation. I will ask if he wants to help when he returns in mid June. Paxton Astoria, OR

23 years

1
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Adaptec ACB 4070

by aek＠spies.com

I'll put a scan of the manual for the 4000 series up for you at www.spies.com/aek/pdf/adaptec

23 years

1
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PDP-7

by aek＠spies.com

but, is there any SOFTWARE?

23 years

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8" floppy drive value

by aek＠spies.com

if one should show up, I'd like to find a Memorex 650/651 drive to try reading some discs someone gave me. it is hard sectored, with the sector holes on the outside edge of the disc instead of the inside.

23 years

1
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FS: Symbolics 3650 LISP machine

by mrfusion＠uranium.vaxpower.org

so, im thinning the herd some more, and have had to make a tough decision... to keep the lispm or not... and ive decided i need to find it a new home. so, i have for sale, a Symbolics 3650 Lisp Machine. While some of the gear has been given away, the lispm is one i paid a good bit of money for (i actually bought it surplus from Symbolics!) and so this one is for sale. It'll go on ebay soon if there's no interest here. The machine is fully operational , has a 750 MB disk, 4 megawords (36 bit word size) of memory, and has Genera 8.3 (the latest version as of 2001) installed. Some pictures of it can be found at the url listed on the bottom.. just scroll about 2/3 of the way down. I'm asking $800.00. It's in Pittsburgh, PA, btw. happy hacking, Isildur http://www.vaxpower.org/~isildur/computers.html

23 years

4
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PDP-7

by toresbe＠ifi.uio.no

Hello all! I'm restoring a PDP-7 machine to functional condition, pictures at http://tore.nortia.no. Anyone here ever worked at DEC while this was happening? Anyone know anything about the PDP-7? I saw a post regarding a still-functional PDP-7 running a Van der Graaff posted July 2002, but the poster doesn't reply to my mail. Know where it was? -Tore "Pluribus unum, infinitiv thesaurus. Cardio anima stinki latina!"

23 years

3
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New toy - HP 1611A Opt A65

by stuart＠stuartsjohnsonfamily.net

I just received a HP 1611A Logic Analyzer with Option A65 (6502 uP) and I am looking for 1) documentation, and 2) how to make the cable from the pod to the uP socket. My internet search (Google) turned up - zilch. If anyone has the operations manual and/or the service manual or knows where they might exist online, I would appreciate you posting the address or emailing it to me. If someone has the manuals and would loan them for scanning, that would be helpful too. Ditto for the manuals for sale. I'm sure the cable from the pod to the uP socket is quite simple, but as I haven't seen one in 15+ years, could someone describe it for me? If someone has one for sale, that would be good too. I am also interested in acquiring options for this unit: HP #01611-62107 Microprocessor Logic Probe for 8080A, 9080, and Similar Chips HP #10260A Logic Analysis Plug-In Module and HP #01611 62105 Microprocessor Logic Probe for Z-80A and Similar Chips HP #01611-62101 External 8 Bit Probes HP #1540-0325 Accessory Large Carry Case. or other items not listed. Many thanks, Stuart Johnson

23 years

1
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VAX vs. Alpha for OpenVMS

by healyzh＠aracnet.com

OK, a bit of an odd question here, but I'm wondering what people think as I'm used to a PWS 433au. A co-worker of mine just bought a VAXstation 4000/90 and a DEC 3000/400. She wants to use one of them as a Mail Server running OpenVMS. The VAX looks to have 104MB, the Alpha looks to only have 96MB. Any idea on which would work best for her? Part of what has me concerned is the lack of RAM on the Alpha. If she uses the VAX, it will probably end up running V7.3, if the Alpha probably V7.2-1H1. DECwindows won't be loaded, which will help get the Alpha down to a better memory footprint. Oh, she'll probably also want to run a Webserver on the system so that the mail can be accessed via the web. Zane -- -- | Zane H. Healy | UNIX Systems Administrator | | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | | | Classic Computer Collector | +----------------------------------+----------------------------+ | Empire of the Petal Throne and Traveller Role Playing, | | PDP-10 Emulation and Zane's Computer Museum. | | http://www.aracnet.com/~healyzh/ |

23 years

6
13
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Adaptec ACB 4070

by Geoff.Stevens＠castle-cs.com

Richard, Do you still have the manual for the above. I am prepared to pay swap borrow whatever to get a copy or sight of it. I have an old BBC hard drive ( in door stop mode)which uses it so it would be really handy. rgds Geoff Castle Computer Services Ltd. Stewart House, Pochard Way, Strathclyde Business Park, Bellshill, ML4 3HB. Tel: 0845 230 1314, Fax: 0845 230 1615 Castle Computer Services Ltd. The Rural Centre, Ingliston, Edinburgh, EH28 8LT. Tel: 0845 230 1314, Fax: 0845 230 1615 Castle Computer Services Ltd. 47 Albert Street, Aberdeen, AB25 1XT. Tel: 0845 230 1314, Fax: 0845 230 1615 Website: www.castle-cs.com This e-mail is private and confidential and may be legally privileged. It is for the attention of intended recipients only and access by others is unauthorised. It is not intended to be relied upon without subsequent written confirmation of its contents. Accordingly, Castle Computer Services Ltd. disclaims all responsibility and accepts no liability (including in negligence) for the consequences of any person acting, or refraining from acting, on such information prior to the receipt by those persons of subsequent written confirmation. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on the information in this e-mail is prohibited and may be unlawful.

23 years

1
0
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Revengish URL

by Paul.HILLS＠landisgyr.com

Those picture are all very interesting, but it's the results - or even better the doing - that is much more interesting to see... http://www.electricstuff.co.uk/esd.html! paul -----Original Message----- From: Roger Merchberger [mailto:zmerch@30below.com] Sent: 21 May 2003 18:04 To: cctalk(a)classiccmp.org Subject: Re: Revengish URL Rumor has it that John Lawson may have mentioned these words: > This is diabolical - evil - reprehensible - unconconsionable - >sick/twisted - dangerous - damn funny. > >http://www.fiftythree.org/etherkiller/ > >For those who eschew browsers - it's a series of pictures of all the usual >computer and networking connectors - - - spliced onto AC Mains cords. ;{} They missed one -- True Story: I had a lady walk into our store and said she needed a special cable for her Mac, but didn't know exactly what it was. I showed her several cables >from our stock, and she verified the port this cable was supposed to plug into was the USB port, but she was *positive* the other end was supposed to plug into the wall. I was [evil ascii grafic follows]: ===>||<=== *this close* to saying "I'd be *more* than happy to wire that up for you, ma'am!!!" Imagining her plugging *that* bastage in... that gave all of us here at the shop quite a chuckle for a good long time... Laterz, Roger "Merch" Merchberger -- Roger "Merch" Merchberger -- sysadmin, Iceberg Computers zmerch(a)30below.com What do you do when Life gives you lemons, and you don't *like* lemonade?????????????

23 years

1
0
0 0

Transputer equipment on Ebay

by ram_suganthi＠hotmail.com

I put up some transputer stuff on ebay in order to clean up things and make room for some more new toys. Among the items is a CSA TEK with mint documentation and unopened software box... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2731552878 Cheers, Ram _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail

23 years

1
0
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HP nixie tube module information needed (fwd)

by bill＠timeguy.com

I asked my partner, and here's what he came up with about them. Hope it helps. ---------- Forwarded message ---------- Date: Tue, 20 May 2003 16:41:52 -0500 From: Chris Radek <chris(a)timeguy.com> To: Bill Richman <bill(a)timeguy.com> Subject: Re: HP nixie tube module information needed (fwd) On Tue, May 20, 2003 at 04:24:22PM -0500, Bill Richman wrote: > > http://www.ubanproductions.com/Images/nixie1.jpg > http://www.ubanproductions.com/Images/nixie2.jpg All I know is they were used in counters. These have a binary to 1-of-10 decoder made out of photoresistors and neon bulbs (!) in the black box. It's not a HV supply like he guessed. It should be possible to make a clock but he'll have to modify some of them to reset before the usual cycle of 0-9. Resetting at 23:59:59 is probably harder and would take some kind of external logic. They already have a feedback to make them reset after 9 instead of counting to 15 - it just has to be modified. On the other hand if he wants to make a clock, nixies are cheap and it might be better to just leave the counter modules as-is and use some logic more suited to counting the time (which is not 10-based). I'm sorry I don't have a schematic. It should be easy to trace out - it's just four flip-flops and a feedback line for reset.

23 years

1
0
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Practical Electronics CHAMP/Tangerine Microtan 65

by Paul.HILLS＠landisgyr.com

>I still have my ZX80 which preceded the Microtan. I I think they were the other way round. I reckon 1979 for the Tangerine and 1980 for the ZX80. I also drooled over that Microtan and ended up with a ZX81. By the way, there's a superb website devoted to the Microtan 65 here: http://www.geoff.org.uk/microtan_65.htm. It's got scans of manuals, magazines and all sorts. paul >Dave.

23 years

1
0
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8" floppy drive value

by Innfogra＠aol.com

In a message dated 5/23/03 2:42:14 AM Pacific Daylight Time, mikeford(a)socal.rr.com writes: > So, whats an 8" floppy drive in unknown working state worth? > Last I checked Aluminum Breakage is worth 16 cents per pound. Full Height 8" Floppies weigh about 15 pounds so their scrap value is about $2.40 each. Most Scrap dealers like to get twice scrap value when they do an outside sale so a scrap dealer would likely put these drives aside if you offered him $5 each. Hope this helps. Paxton Astoria, OR

23 years

3
2
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Homemade Hot Air Soldering Tool

by pete＠dunnington.u-net.com

On May 22, 11:23, Vintage Computer Festival wrote: > On Thu, 22 May 2003, Ethan Dicks wrote: > > > Was it here that I was reading about turning a RadioShack Desoldering > > Iron into an SMT hot air tool? The basic gist is that you remove the > > rubber bulb, plug in an aquarium pump on a long-enough air hose, and > > pack some (stainless) steel wool inside the de-soldering nozzle. The > > pump provides continuous air over the steel wool which facilitates > > heat transfer to get the air temp up to something useful. I have > > used $800 commercial versions of this at work with great effect. > > Sounds cool. I assume at some point you need to change out the steel > wool? Probably not for a long time, if at all. Commercial steel wool is oil-coated to prevent it rusting. Philip described his as going black, which I expect will be the result of the oil carbonising in the hot air stream. The result will be a tough coating of carbon that will prevent oxidation. A similar idea is sometimes used for steel tools -- heat until it develops a blue oxide layer then plunge into oil. The resulting blue colour is fairly pretty, and rust-resistant. -- Pete Peter Turnbull Network Manager University of York

23 years

2
1
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Ebay Don Lancaster Minicom term

by jpl15＠panix.com

Okay guyz - here's your chance to get a late 70's Minicom IV acoustic-coupled 110Baud data terminal from none other than the the author of the TTL Cookbook, TV-Typewriter Cookbook, etc. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1247&item=2730754787 Don't say I never told ya's nuttin'! Cheers John (who built a Lancaster TVT from scratch, on protoboards - it worked)

23 years

4
5
0 0

SparcServer 470 in PA

by owad＠applefritter.com

I have a SparcServer 470 available in south-central PA. It's full of cards and looks complete. Powers up, but I haven't tested it further. I'd like to trade it for Apple or DEC equipment, maybe money, or the stuff listed here: <http://www.applefritter.com/other/wanted.html>. Also available: SparcServer 690MP rackmount chassis w/power supply. Free. Tom Applefritter www.applefritter.com

23 years

1
0
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Ebay Don Lancaster Minicom term

by cb＠mythtech.net

>The device pictured in the auction is not a 110 baud terminal. >It's a 45.5/50 baud TTY device, designed for deaf persons >(is that the current politically correct term?) to communicate >with other TTY-equipped parties via telephone. I thought it looked amazingly like the TTY device my brother has. I just didn't want to speak up and show my ignorance (I'll do it now when I can point the finger at someone else as say "he said it first") -chris <http://www.mythtech.net>

23 years

1
0
0 0

retrobits.com addresses

by spectre＠floodgap.com

Please update any links you have @ retrobits.com to the following URL: http://www.floodgap.com/retrobits/ (e.g., http://www.retrobits.com/ckb/secret/ -> http://www.floodgap.com/retrobits/ckb/secret/ ). Thank you! -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Floodgap Systems Ltd * So. Calif., USA * ckaiser(a)floodgap.com -- With a rubber duck, one's never alone. -- Douglas Adams, "HGTTG" -----------

23 years

1
0
0 0

Homemade Hot Air Soldering Tool

by erd_6502＠yahoo.com

Was it here that I was reading about turning a RadioShack Desoldering Iron into an SMT hot air tool? The basic gist is that you remove the rubber bulb, plug in an aquarium pump on a long-enough air hose, and pack some (stainless) steel wool inside the de-soldering nozzle. The pump provides continuous air over the steel wool which facilitates heat transfer to get the air temp up to something useful. I have used $800 commercial versions of this at work with great effect. I have done some initial digging and have come up with the following: RS De-soldering Tool - $10 new Weller De-soldering Attachment - in junk box Aquarium Pump - $7 - $70 new So... I can use one of my Wellers as the heat source, or I can drop $10 for a dedicated (non-temp-controlled) unit. What I'm hung up on is that I have no idea what capacity pump to buy. The $70 pump is somewhat large, but is adjustable. The $7 pump is too small to enclose a golf ball. There are numerous models in-between, including several with dual taps. So... has anyone here had any experience building such things? If I didn't read about it here, I'm baffled where else I would have run across the info. Thanks, -ethan The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

23 years

8
12
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Commodore 128 available

by spc＠conman.org

A friend of mine, Marcus (mlivius(a)charter.net) has a Commodore 128 he is willing to part with for shipping (and maybe a few extra bucks). It is still in the original packaging but doesn't come with documentation (in fact, he says it has rarely, if ever, been used). If anyone is interested, please contact him direct (mlivius(a)charter.net) to work out the details of shipping from Houston, Texas. -spc

23 years

2
1
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Compaq DeskPro 2 available in Oshkosk, Wisconsin

by vcf＠siconic.com

Anyone interested in a Compaq DeskPro 2? Reply to original sender. Reply-to: <WebMaster(a)soberbikersunited.org> ---------- Forwarded message ---------- Date: Thu, 22 May 2003 08:10:57 -0500 From: Web Master <WebMaster(a)soberbikersunited.org> To: Vintage Computer Festival <vcf(a)siconic.com> Subject: Re: Compaq DeskPro 2 At 09:51 PM 5/21/2003 -0700, you wrote: >On Wed, 21 May 2003, Web Master wrote: > > > Do you have use for a Compaq DeskPro Model 2? Model 1, 2, and 3 were > > versions of the first "DeskPro" personal computer. Mid 1980's. > >Hi there. > >Maybe...where is it located? Oshkosh, Wisconsin -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years

1
0
0 0

Bulk Erasing Cassette Media

by cb＠mythtech.net

Ugh... this tape drive is going to be the death of me! Now that I have a small supply of Maxell tapes for my TEAC MT-2ST/N50 cassette drive (thanks Don!!!), I've run into the next problem. All the tapes are reported as "content unknown", and claim to be 60 MB (the drive claims to do 150 or 160 depending on which info you pay attention to). Neither of those are too big of a surprise as the tapes are used, and logically have data that Retrospect on the Mac can't understand, and may very well have been written to last with an earlier version of the drive (different models support different MB's, and from what I can tell, the tapes are all interchangable for writing at max MB, and upwards readable so you can read a lower MB tape on a higher MB drive) However, all the tapes ALSO report that they are locked. Regardless of how I set the write protect slide, the tape is still seen as locked. Which means I can't erase or write to the tapes. I opened the drive, and the write protect sense switch appears to be physically functional. I have not yet broken down the drive enough to see if it is electronically functional (although about the best I can do is test for switch continuity in the open and closed positions). I'm wondering, is it possible they are seen as locked because of the data on them? Is there a way to software lock the tapes? Or maybe the locked is a side effect of having been last written at a lower MB (some kind of a safety to keep you from screwing up the data with a higher MB drive). If so, is it safe to bulk erase the tapes to wipe the data, or will I destroy some kind of a control track as well and render the tape useless? I know some kinds of media should not be bulk erased for just that reason. I would just give it a go, but since I only have 10 tapes, and these have proven a bit tough to locate, I don't want to destroy a tape without at least consulting the resident group of experts. TIA -chris <http://www.mythtech.net>

23 years

1
0
0 0

Practical Electronics CHAMP/Tangerine Microtan 65

by dwightk.elvey＠amd.com

>From: "ben franchuk" <bfranchuk(a)jetnet.ab.ca> > >Dwight K. Elvey wrote: > >> >> Hi >> All make the assumption that you must make 8 bit/16bit >> or, in your case, 20 bit. One can make a 1 bit alu that >> can have data width controlled by instruction. It may >> not be fast at math but much processor time is consumed >> just looking at true/false. If your model doesn't require >> passing data through the alu for mem/mem and mem/io moves, >> a single bitter makes sense. >> ( My Nicolet is a 20 bit machine. ) > >Darn! All the good computer names are taken. :) >Do you have any more information? > >> Dwight > >Some day I would like to see a DECIMAL computer in >TLL or FPGA like the early decimal machines. >Ben. Hi Ben I didn't build it, I just made it work. A real pain, since I didn't have any schematics and it had several problems. There are a couple of pictures at: http://www.rdrop.com/~jimw/jcgm-vcfiv.shtml Look down 8 rows. The first 2 pictures in that row are my Nicolet machine ( It has 12Kx20 core ). It is all ttl/dtl, thought. Notice the front panel switch position. It is 7600 octal, the boot vector in core. One of the interesting things is the ALU. It has a 5 input port adder. One can select from, ALU, ALU*, MEM, MEM* and "one" to add together. One can do a lot with this combination. Anyway, back on the original subject, there are also some interesting minimal instruction processors described out there. As I recall, there was one that had only 4 operations. SUBtract was one of them ( considered more important than an ADD ). I've been toying with making a single bit relay based computer. My intent is to make the main memory bank using reed relays with a magnet to bias them. The idea is that the external magnet has just enough effect that if the reed relay is closed, it stays that way. If it is opened it stays open. One would arrange these relays in an array with small ceramic magnets, north and south poles alternating so that there is no cumulative bias. Writing to the reeds, coil in opposite directions causes it to open or close. Data is handled by a shift register so that the bus is always 1 bit wide. It'll be slow but what the heck. To make things a little more complicated, I expect to use 3 phase clocking. With this, I can use overlapped clocks, without racing. Dwight

23 years

1
0
0 0

Need manual for Tek 922 scope

by Cess120＠aol.com

I have the T921/922 SVC manual make offer Larry

23 years

1
0
0 0

DEC DSSI cabling wanted

by classiccmp＠crash.com

I wrote: >> I'm looking for DEC DSSI cabling, terminators, etc. I'm located >> in the Boston suburbs, but will happily pay shipping. John Allain responded: > mini-IDC based or mini-centronics based? Er, yes. ;^) I've got to go from uVAX 3400 and VAX 4k500 bulkheads (and KFQSA) to each other and some HSD05/HSD10. The HSD's use micro-DB50 sized connector that looks like a Centronics, while the uVAX 3400 (and I assume the 4k500) have what looks like an inverted micro-DB50 connector (male on host). I never used DSSI machines in production, so I'm very unclear what these cables are or look like... Thanks, --Steve. smj(at)spamfree.crash.com (lose spamfree to get through, m'kay?)

23 years

2
1
0 0

Need manual for Tek 922 scope

by acme＠ao.net

Anybody got one? I'll pay for copying costs, postage, time, trouble, etc., etc. TIA -- Glen 0/0

23 years

1
0
0 0

3-1/2" Floppy Market Cornered

by rdd＠rddavis.org

It appears that I may have cornered, at least the local, market for 3-1/2" floppies. A recent thrift-shop find was a computer-paper sized box (That is, the size of a box of real computer paper: wide greenbar. Now, hopefully no one is going to ask a question like "what's greenbar?") packed nearly full of, mostly unboxed, and used, floppies. Nothing useful on them, just a bunch of PeeCee software for Windoze, so I don't have to worry about overwriting anything valuable. :-) -- Copyright (C) 2003 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty.

23 years

15
29
0 0

Free (or trash): 53 QIC tapes

by mvg1＠earthlink.net

Free (you pay shipping), or trash by end of May: Found a box of 53 used quarter-inch cartridge tapes hiding in my home. These are LOW CAPACITY tapes (450 feet/137.2 meters), almost all are 3M brand DC 300XL/P tapes, some few are other brands. All are used (contents unknown, apparently backups). Storage boxes are generally present, in mostly good condition (some cracked), but have been written on with marker. All have been stored inside. You are welcome to as many as you like; tell me your shipping address and I'll tell you shipping costs (USPS Parcel Post (calculated via www.usps.com)). Shipping originates from zip 63132. No cost for packing and shipping, only USPS out-of-pocket costs. I fully expect a thundering silence; I just hate pitching them without at least asking. Mark Grieshaber mvg1(a)earthlink.net

23 years

2
1
0 0

DEC DSSI cabling wanted

by classiccmp＠crash.com

I'm looking for DEC DSSI cabling, terminators, etc. I'm located in the Boston suburbs, but will happily pay shipping. Low/no-cost preferred, but please feel free to respond if you want money for it, or something particular in trade. I don't have a list of what I've got handy, but who knows? I've got a pile of uninventoried Qbus boards now and random other bits. Thanks, --Steve. smj(at)spamfree.crash.com (lose spamfree to get through, m'kay?)

23 years

2
1
0 0

MINC-11

by pete＠dunnington.u-net.com

On May 6, 22:49, Tony Duell wrote: > > Do you know where I could find technical documentation for the MINC-11 > > or MINC-23? > > What do you need to know? I have the printset (schematics) for the > Minc-11, which includes some, but not all, of the MINC modules. If anyone in the UK wants a MINC-11, I know where there is one, almost certainly "free to a good home", and probably with some docs and software. The catch is that it's in Scotland, and *must* be moved within a week or so (owner is moving and can't take it with him). I'd have it myself, but I have no more room :-( -- Pete Peter Turnbull Network Manager University of York

23 years

5
7
0 0

A car-related computer?

by owad＠applefritter.com

Anybody know what this is? It has a dial for cylinders, a disal for meas. val. (measurement value, I presume), switches for 4 cylinders and 8 cylinders, a switch with options "car", "ci", and "sim", a bnc connector labeled "osc. out", etc. The display is 4 alphanumeric LEDs. On power up, it displays "Cn00" (where 'n' is all four vertical segments and the topmost horizontal segment). I've posted pictures of the unit and some of the cards here: <http://www.applefritter.com/temp/exiles/car/> There isn't any brand name on it and many of the boards look custom. A few though look like like custom prints. I appreciate any help. Tom Applefritter www.applefritter.com

23 years

3
3
0 0

Found that VS-85..

by jim＠smithy.com

Finally found a Wang VS-85. Had to take it apart to get it in the house! I'll be putting up some information and pictures on my web site soon. The power supply had been removed, so I hacked together some cables and used a power supply from something else. It has 1MB main memory, an I/O controller for 16 serial (Wang coax-connected devices), four SMD disk ports, a tape drive controller, and a couple of other unknown I/O controllers. The most interesting part: A CE manual, describing the CPU architecture, theory, and lots of other useful stuff, along with complete schematics for the whole system, and most of the I/O controllers. This machine is 32-bit, with an instruction set similar to the IBM 370. The CPU consists of a ton of TTL chips, an ALU made of 74181's, and an 8KB writable control store. The microcode for the CPU resides on a 5 1/4" floppy disk. The floppy disk drive in the CPU cabinet can only load microcode, you can't use it to store data. Each I/O controller has its own CPU (or several). The old ones have a couple of 74181's and EPROMS with a control program, the newer ones use Z80's, and have RAM only, the control program gets loaded to them when you IPL the system. It's about the size of a clothes dryer. The standard power is 120vac, but the hacked-in power supply is 220vac. Draws about 4 amps @ 220vac. -- Jim Donoghue Smithy Co. (734) 913-6700

23 years

13
24
0 0

Needs PC-8300 Manual was Fw: Week's Finds

by jrkeys＠concentric.net

Can anyone help this person? Thanks ----- Original Message ----- From: "Gebreselassie, Daniel" <DGebreselassie(a)cnmcresearch.org> To: <jrkeys(a)concentric.net> Sent: Wednesday, May 21, 2003 2:43 PM Subject: Re: Week's Finds > Hi > > I would like to get the manual of the NEC PC-8300 note book used to monitor > HPLC. Would you please tell me where I find the manual. > > Thank you > > > Daniel Gebreselassie, Ph.D. > CRI, Center I, > Children's National Medical Center > 111, Michigan Avenue NW > Washington DC 20010 > Phone: 202-884-2710 (O) > 240-305-1720 (c)

23 years

1
0
0 0

HP nixie tube module information needed

by uban＠ubanproductions.com

Hello, Probably my best find at the recent Hamvention in Dayton OH was a stack of nixie tube modules made by HP. In retrospect, I wish that I had purchased the whole box of them, but I hopefully have enough to at least make a clock. I have two variations on the modules, the part numbers are: HP 05212-6016 series 648 HP 05212-6003 series 415 They both use Borroughs B422 nixie tubes and look like they may have an integrated HV supply of some sort. Here are a couple of pics for reference: http://www.ubanproductions.com/Images/nixie1.jpg http://www.ubanproductions.com/Images/nixie2.jpg I would appreciate if anyone can tell me what HP (or other) instruments may have used these modules. I would also like to find a schematic of the module if possible. Thanks! --tom

23 years

5
6
0 0

Preserving ancient media

by Paul.HILLS＠landisgyr.com

Thanks for that. I tried simply zipping up a .WAV file created by the program I mentioned and it compressed from 544kb down to 3.4kb. The original data file was 409 bytes, so although the result is 8 times bigger than the data file, storage is not too much of a problem. At this compression ratio (or rather expansion I suppose), a CD could store 80Mb of original computer data - more than was probably ever written for some of those computers!. paul -----Original Message----- From: ard(a)p850ug1.demon.co.uk [mailto:ard@p850ug1.demon.co.uk] Sent: 20 May 2003 00:26 To: cctalk(a)classiccmp.org Subject: Re: Preserving ancient media > That's sort of what I was thinking of. Of course, as you say, it is ZX81 > specific. > > Were these home computer tape format's standardised in any way, or at least Not at _all_ Just about every manufacturer did it his own way... > based on an older standard? I seem to remember a format called > "Cottis-Blandford" from years ago. Am I right in saying that most home I thought the common one was 'Kansas City', but that was not common on UK home computers (the BBC micro was perhaps the closest to it). > computer's tape data format was 1200Hz and 2400Hz for logic 0 and 1 (maybe No! Some did, many didn't. What's worse is that some manufacturers used a constant time for each bit (so that one state was a single cycle of 1200 Hz, the other was 2 cycles of 2400 Hz, say), but many other manufacturers used a single cycle at each frequency for the 2 states. This means the bit rate is not even constant... > the other way round). How many stop/start & parity bits (and possibly more > control bits) are sent may be computer-specific I guess. However, a reasonable quality digital audio recording of these old tapes might well be enough to preserver them (you could play it back to a real tape, or directly into the home computer). It's not an efficient way to store the data, but it's better than losing it totally. -tony

23 years

2
1
0 0

co-worker?

by cschaefer＠ti.com

Is this the Steve Loboyko who used to work at Sola? If so, give me a response. Chuck Schaefer Sr. Process Designer Texas Instruments

23 years

2
1
0 0

openvms... another question

by healyzh＠aracnet.com

Jay West wrote: > Zane wrote.. > > I've run RT-11 and XXDP (Diag's) on my /44. Ideally I'd like to get it up > > and running with RSTS/E (an OS I think Jay would like), but I don't need to > > worry about that at the moment as don't have access to it (Oh, well, my /73 > > is configured better) > > I find RSTS (at first blush) a little obtuse. Maybe I haven't dug into it > enough. But RT-11 with TSX+? That I LOVE! Strange, I'd have figured that the strong BASIC nature of the OS would appeal to you, given some of the HP stuff you mess with. OTOH, when you throw in the RSX and RT-11 runtimes, it does get a little unusual, but that's part of what makes it appealing to me :^) Zane

23 years

1
0
0 0

OpenVMS software.

by acme＠ao.net

Hi -- Funny, I just did the same thing with a VaxStation 3100 model 76 which was running netbsd . . . The OpenVMS Hobbyist site (www.montagar.com/hobbyist/) has a number of links to OpenVMS software. Later -- Glen 0/0 > Finally sorted out the licenses, and now have OpenVMS installed on my > MicroVAX 3100 80 (it was running netbsd) > Cool, learning vms is *fun* well its a challenge. > > Does anyone know a good source for software for the VAX at all.. > > Benjamin

23 years

1
0
0 0

3-1/2" Floppy Market Cornered

by cb＠mythtech.net

>I thought you could use 3.5" HD/DD disks in a DS/DD drive just fine. At >worst a piece of tape over the "wrong" hole if necessary. At least with the Mac, this isn't a good idea for long term use. It will sometimes format the disk as DD if you tape over the HD sense hole, but even if it does, you can pretty much count on the disk failing in a very short period of time. I've never had a disk last more than a few read/write sessions. After that, errors start occuring and you can't read or write to it any more. In many of the cases, the disk is usually hosed after this and won't take a format back to HD anymore. I can't say that I've really tried it outside of a Mac, so it might just be a Mac thing that keeps it from working. And despite the fact that some company made a hole puncher to make DD disks into HD disks (I have one), that doesn't seem to work any better on the Mac. In fact, in my findings, it works even worse as it rarely ever even took the HD format in the first place, and when it did, it immediatly starting having R/W errors and was unusable anyway. -chris <http://www.mythtech.net>

23 years

4
3
0 0

FW: Computers, Free

by wh.sudbrink＠verizon.net

In case someone missed it in all of the noise currently on comp.os.cpm: ------------------original message--------------------- From: David L. Foreman <davelf11(a)cox.net> Subject: Computers, Free Date: Tue, 20 May 2003 18:39:49 -0700 I have six Applied Microtechnology Z80 computers, and two Burr-Brown/Applied Microtechnology Z80 Computers available in Tucson. The BB units use the STD buss and the others have a 22/44 pin card the same size as the STD buss card (4 1/2 by 6). The cards are the same except the bus. There processor, ram memory, eprom memory, DA, AD, eprom programmer cards. I have all the manuals and softwre for them. Also 5 1/4 and 8 inch drives and power supplies for the disk drives. CP/M comes along also. Must be picked up in Tucson before the end of the month. Dave F.

23 years

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OpenVMS software.

by cvisors＠carnagevisors.net

Hi All, Finally sorted out the licenses, and now have OpenVMS installed on my MicroVAX 3100 80 (it was running netbsd) Cool, learning vms is *fun* well its a challenge. Does anyone know a good source for software for the VAX at all.. Benjamin -- one you lock the target two you bait the line three you slowly spread the net and four you catch the man Front 242 Headhunter

23 years

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Australian museum may bite the dust

by Paul.HILLS＠landisgyr.com

Another sad story... http://www.theage.com.au/articles/2003/05/19/1053196515142.html paul

23 years

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HP7585B ROM

by kens＠cad2cam.com

Given a plotter made in 1985. ROM checksum error appears at powerup. The ROM has the numbers 0785-18078 Rev A 10-29-84 and the second ROM has the numbers 07585-18076. Anybody have the image of these ROMs so I can reburn them? Ken CAD2CAM.COM

23 years

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Oldest computer still in current use

by cheri-post＠web.de

I read that the NASA is now searching for 8086 chips on ebay, as the supply on the market has almost disappeared. Pierre cctech(a)classiccmp.org schrieb am 16.05.03 17:19:18: > > > -----Original Message----- > > From: Vintage Computer Festival [mailto:vcf@siconic.com] > > Sent: Sunday, May 11, 2003 1:22 AM > > To: Classic Computers > > Subject: Re: Oldest computer still in current use > > > <SNIP> > > > > I am inclined to believe there may still be some ground > > systems for the > > Space Shuttle program that are run on 8080 based machines.2 > > > > I can confirm as a fact that there was at least 1 8086 flying on Columbia > before Feb 1. > > > > ************************************ > If this email is not intended for you, or you are not responsible for the > delivery of this message to the addressee, please note that this message may > contain ITT Privileged/Proprietary Information. In such a case, you may not > copy or deliver this message to anyone. You should destroy this message and > kindly notify the sender by reply email. Information contained in this > message that does not relate to the business of ITT is neither endorsed by > nor attributable to ITT. > ************************************ ____________________________________________________________________________ ImmobilienScout24 - ?ber 170.000 Immobilien - Finden Sie hier Ihre neue Traumwohnung! In Immobilien die Nr.1 im Netz: http://info.is24.de/web.de

23 years

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Cool Find

by Lee.Davison＠merlincommunications.com

Visiting a charity shop this week I found one of these .. http://www.vintagecalculators.com/html/anita_1011_lsi.html .. an Anita 1011 desktop calculator, 10 digit Nixie display and all for the sum of Two pounds forty seven pence. Apart from the rubber feet having melted into a marshmallow like crusty sludge it's mint condition with the manual and dust cover. Looks very pretty all lit up. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years

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Data General 216 terminals

by tlatimer＠voyager.net

Hi, Have a client with an OLD point of sale/rental system which is hardwired for DG 216 terminals. One went completely out last week and he wants to try to replace it. Do you have any, or know anyone with some of these left ? Thanks in advance, Tom Latimer, Precision Computer Systems tlatimer(a)voyager.net Okemos, Michigan (517) 349 5332

23 years

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Mathiputer

by Ghena2＠aol.com

<< I just took delivery of a Cybernetic Systems Mathiputer.It's a stupid odd-shaped math toy that quizes you on arithmetic..... >> Hey, i WANT one of those things! In some thirty plus years of teaching special education kids, i have never found anything before or since that has worked as well for getting number facts semi-permanently into a certain subset of smart, but learning disabled, brains! NONE of the newer fancy number facts software can hold a candle.... If i knew how to program, i'd write something for windows that worked precisely like the good ol' Mathiputer! So.... If happens you know where i can get one that is still functional, at a price i can possibly afford on school teacher's wages, PLEASE LET ME KNOW!! Thanks, Ghena Dalby Ghena2(a)aol.com

23 years

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STAG Electronics Ganged Programmer

by pete＠dunnington.u-net.com

On May 19, 10:27, Witchy wrote: > > -----Original Message----- > > From: cctech-admin(a)classiccmp.org [mailto:cctech-admin@classiccmp.org]On > > Behalf Of Rob O'Donnell > > I remember these being in use at Ferranti, when I was an apprentice there > > about 20 years ago .. (so age fits!) AFAICR we only ever used them in > > stand-alone mode as a bulk copier. They were also RENTED, from > > Livingston > > Hire, if I recall correctly, (certainly we used them a lot) so > > there may be a chance you can find some old docs from them. > > Is that these people? Yes, same company. I've occasionally hired specialist test equipment >from them. -- Pete Peter Turnbull Network Manager University of York

23 years

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OT: David Betz[Fwd: failure notice]

by dwoyciesjes＠comcast.net

Apologies for this message, but... Does anyone know how to get ahold of David Betz? His e-mail box seems to be a bit full... MAILER-DAEMON@... wrote: > > Hi. This is the qmail-send program at mercury.mv.net. > I'm afraid I wasn't able to deliver your message to the following addresses. > This is a permanent error; I've given up. Sorry it didn't work out. > > <dbetz@...>: > Recipient's mailbox is full, message returned to sender. (#5.2.2) > > --- Below this line is a copy of the message. -- --- Dave Woyciesjes --- ICQ# 905818

23 years

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Current Subscribe Procedure?

by GOOI＠oce.nl

Well, I quickly checked for Outlook. Outlook Express *could* be different as with many other things between Outlook/Outlook Express. To see all headers do the following in Outlook: - open the mail message (not preview, but "full screen") - click "View" from the menu bar - select "Options..." from the list that appears. The "Message Options" dialog box opens. - In the "Message Options" dialog box at the bottom the scroll box shows the "Internet headers:". - Henk. > -----Original Message----- > From: Zane H. Healy [mailto:healyzh@aracnet.com] > Sent: woensdag 21 mei 2003 10:44 > To: cctalk(a)classiccmp.org > Subject: Re: Current Subscribe Procedure? > > > >Being a major smart A** I can't resist pointing out the following > >information in the message headers. Though since you're in > a Win98 system I > > BTW, this was supposed to have a smiley in there.... > > >suspect they're probably hidden from you (I read a lot of > the messages using > >'elm' on Unix so I see most of the headers). I don't think > I see these when > >I read the messages with Eudora on my Mac. > > It turns out that I can see the headers under Eudora, though > I'm wondering if they show up under MS Outlook/Outlook > Express. Do they? > > Zane > > -- > -- > | Zane H. Healy | UNIX Systems Administrator | > | healyzh(a)aracnet.com (primary) | OpenVMS Enthusiast | > | | Classic Computer Collector | > +----------------------------------+----------------------------+ > | Empire of the Petal Throne and Traveller Role Playing, | > | PDP-10 Emulation and Zane's Computer Museum. | > | http://www.aracnet.com/~healyzh/ |

23 years

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Current Subscribe Procedure?

by healyzh＠aracnet.com

> I have not subscribed since before the change to cctalk. > Can someone please point me to the current procedure? > I want to change to a different e-mail address. Being a major smart A** I can't resist pointing out the following information in the message headers. Though since you're in a Win98 system I suspect they're probably hidden from you (I read a lot of the messages using 'elm' on Unix so I see most of the headers). I don't think I see these when I read the messages with Eudora on my Mac. List-Unsubscribe: <http://www.classiccmp.org/mailman/listinfo/cctalk>, <mailto:cctalk-request@classiccmp.org?subject=unsubscribe> List-Id: General Discussion: On-Topic and Off-Topic Posts <cctalk.classiccmp.org > List-Post: <mailto:cctalk@classiccmp.org> List-Help: <mailto:cctalk-request@classiccmp.org?subject=help> List-Subscribe: <http://www.classiccmp.org/mailman/listinfo/cctalk>, <mailto:cctalk-request@classiccmp.org?subject=subscribe> List-Archive: <http://www.classiccmp.org/pipermail/cctalk/> Zane

23 years

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