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101090 discussions

Intel μscope 820 from 1978 found - for 8085 microprocessor

by innfoclassics＠gmail.com

I just picked up an intel ?scope 820 with a date code of 1978. It came with the 8085 module and cables. Looks complete with manual but I have not tested it yet, I probably will. It was originally designed as a diagnostic tool for the 8080A. Unfortunately I did not get that module. It is in a plastic black carry case with the manual, 8085 overlay, 8085 module with a ZIF socket for the 8085 and a cable from the module that plugs into the original 8085 socket for the board under test. AC powered. To quote from the manual: The ?scope 820 is most easily described as three instruments combined into a single convenient test instrument. A minicomputer front panel. A microprocessors anayzer. A substitute program memory. I am planning on selling it so if you are interested please make offers. It is very clean and not abused at all. I would bet it has had very low use. This is the first time I have seen one of these even though we used to buy truckloads from intel in the early 1990s. Please contact me off list at paxton.hoag at gmail.com for offers or more information. I supose I should scan the docs, there are only about 35 pages. Paxton Astoria, Oregon USA

17 years, 3 months

reasonable price for a working VT05?

by legalize＠xmission.com

What's a reasonable price for a working VT05 in good working order and cosmetic condition? By "reasonable price" I don't want to hear stories about how you found one for $5 at surplus 10 or more years ago. Its irrelevant. So before you go on about how these things used to be commonplace and cheap/free, let's just inject a little reality into the discussion. They don't come up on ebay with any sort of regular frequency; in several years of running a standard search for DEC terminals, its never come up once. VT52s/VT78s rarely show up anywhere, while VT100s are fairly common. I'm not even aware of many collectors that have one; I know the Wofford Witch project has one, but I don't think Henk in the Netherlands has one (he has a VT55 link, but no VT05). The Computer History Museum appears to have two in its collection, but that's no surprise considering they've received a lot of stuff from Gordon Bell (as I understand it). -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download <http://www.xmission.com/~legalize/book/download/index.html> Legalize Adulthood! <http://blogs.xmission.com/legalize/>

17 years, 3 months

WTS: AT&T 3B1 Olivetti branded with manuals and DEC Vaxstation 2000 storage box.

by rikbos＠xs4all.nl

I'm concentrating my collection on HP, so before I put it on epay: I want to sell or trade my working AT&T 3B1 Unix PC this one is co-branded with the Olivetti logo. I'm selling it together with 5 manuals and the original installation software (only disk two diagdisk is missing) The 3B1 is equiped with the DOS73 Co-processor board. Also I'm selling a VaxStation 2000 storage box inside is disc but I won't spin when power was applied. This could be a jumper issue but I sell it as non working. Photo's can be found at flickr http://www.flickr.com/photos/35618294 at N03/ Please react off-list -Rik I'm located in the Netherlands.

17 years, 3 months

Emulith V1.2, the ETH Lilith emulator, now also for windows.

by jos.mar＠bluewin.ch

I prepared a new release of Emulith, my emulator for the ETH Lilith hardware. New features : - Usage of the FLTK toolkit instead of of Xlib. - Windows port. - Landscape/portrait modes - normal/reverse video. - file transfer to / from host system - diskimage make & split tool. - partial floppydisk support. - Speed display. Basic CPU emulation remained unchanged and, as before, sourcecode is supplied. Interested parties can now download from my FTP site - The Emulith windows package : ftp://jdreesen.dyndns.org/emulith/emulith_v12.msi - or the Linux package : ftp://jdreesen.dyndns.org/emulith/emulith_v12.tgz - for OS-X : no package yet as I do not own a Mac. However i expect very little issues in porting to the Mac. Volunteer can contact me. and a set of 5 diskimages ftp://jdreesen.dyndns.org/emulith/disk.tar.gz Enjoy, Jos Dreesen

17 years, 3 months

VAX cables for the cost of postage

by jim＠photojim.ca

Hi all, Yesterday I had a failure of my router (it wouldn't reboot after a UPS was reset and it took me basically all day to get it running - but I did get it running!). Since there was a ton of hurry-up-and-wait, I took advantage of the opportunity to clean my basement computer area quite a lot, and made a huge pile of stuff. Most of it isn't of any particular interest to people here (unless you have an itch to own an external Supra modem with a rotating LED display :) ) but I found a box of VAX cables that might well be of interest. Included: A very long (50'?) MMJ to MMJ cable (male on both ends) A fairly long MMJ to DB25 female cable, homemade by someone, connected to a standard DB9/DB25 modem cable. I haven't tested it. This can be the console cable on a VAX (I have one just like it on my VAXstation 4000/60). Two MMJ female to DB25 male cable adapters. You have to self-wire them but the wiring is included. Unopened. Labelled ATI-G25M6-DEC. One MMJ female to DB9 male cable adapter. I inserted the pins on this, but I'm not sure if it's right because it didn't work for me. Hopefully if I did screw it up, you can rewire it easily enough. Two RJ45 female to DB9 male cable adapters, as above, pins uninserted. Two RJ45 female to DB25 male cable adapters, as above, pins uninserted. I think I figured I could put these to use in this project, but I'm not quite sure what I had in mind. :) Obviously, they'd be useful in making inexpensive CAT5-based serial cables. (Presumably they'd be good if you wanted to make a cable for Sparcstations or such, since Sparcs seem to have reverse gender serial ports. I seem to have gender bender adapters for mine though.) A weird DEC cable, DB25 male on one end, and what I think is QBus female on the other (3 rows of pins, 17/16/17 - DB50?). I'm guessing this will be a huge score to someone, just not sure what it goes with. :) Cost: Free. You pay shipping from Canada (to check postage costs, http://www.canadapost.ca, from postal code S4R 1A1). I'll have to formally weigh the package, but I'd guess about 2.5 kg. It's in a standard #10 envelope box that originally held 500 envelopes. To make it fun: - I won't pick a recipient until whenever I check my email first on Sunday (so figure noon CST/1800 UTC as a rough guess, although it might be earlier or later). - If only one person wants them, they win no matter what. :) - Each interested person gets one entry to the random selection. - Canadians preferred, and get an extra entry. But if you're outside Canada and will pay postage, and really, really need this stuff, an exuberant email convincing me of such will make me treat you like you're Canadian. :) (You may also owe me a draught ale from a local establishment, if I ever end up in your city.) (Particularly exuberant Canadians may get three entries, at my discretion.) - Correctly answering the trivia question below gets an extra entry. - Promising to give me an account on a VAX you are running gets you an extra entry. :) (I promise not to abuse it.) (And you don't have to give me an account unless you are awarded these bits, of course.) - Don't answer the trivia question in-list. :) Please reply to me directly, and not on-list. The trivia questions: If you live in Canada, or are a Canadian citizen, answer this one: What is the newest Alberta telephone area code? If you live in the United States, or are an American citizen, answer this one: What state(s) in the United States have land area north of the 49th parallel? If you do not fit into either of those categories, answer this one: Palm trees can be found growing where in Canada? (Hint: the answer is not "indoors", although this may pedantically be true. :) ) Good luck :) Jim

17 years, 3 months

Powering up a 20-year old MicroVAX II

by robert.jarratt＠ntlworld.com

> -----Original Message----- > From: cctalk-bounces at classiccmp.org [mailto:cctalk- > bounces at classiccmp.org] On Behalf Of Robert Jarratt > Sent: 20 February 2009 22:45 > To: cctalk at classiccmp.org > Subject: Powering up a 20-year old MicroVAX II > > I have just collected a MicroVAX II which has been in storage and has > not > been powered on for 20 years. This is my first machine of such an age, > unfortunately I am not particularly knowledgeable at the electronics > level > (I studied circuits academically 25+ years ago and can solder a bit, > but > that is as far as it goes). I know I will need to treat it carefully in > order to get it working again. I plan to open it up and make sure I > clear > out any debris etc, but beyond that I need advice from those with the > experience and knowledge that I lack on how to go about powering it up > carefully. > > > > Thanks > > > > Rob After removing all the boards and leaving just the disk and tape drive for load I impetuously decided to try powering it up. I knew the PSU (model H7864) was set for 110V and made the switch to 240V (I am in the UK). When I connected the power cord, after a few moments there was a loud pop, followed by another before I could pull out the power cord, smoke rose from the PSU. This sounded just like when I had once accidentally made a 110/240 mix-up. The question is, could it be that I had not made the switch to 240 correctly, or could this just be down to the age of the PSU? Regards Rob

17 years, 3 months

8088 vs. 80c88

by les＠hildenbrandt.com

There was also the NEC V20, which was pin for pin compatible with the 8088. It was a CMOS part. There were a few instructions that the V20 executed in fewer clock cycles than the 8088 (multiply comes to mind), causing some motherboard vendors to install a V20, and the sell a 10mhz motherboard as a 12mhz motherboard. The truly great feature of the V20 was the 8080 emulation mode. When a special opcode was executed, the processor switched to 8080 mode, a very fast 8080. I made several CP/M (80) systems using a V20 processor, with a small prom to put the v20 into 8080 mode. I could then switch back into 16 bit mode to implement a ram disk. Les

17 years, 3 months

UK101 update

by lproven＠gmail.com

I have just, this afternoon, finally received the rest of the Compukit UK101 I was talking about last August, which aroused some interest - I received half a dozen direct emails and a few IMs about it, too. I now have the UK101, in a metal case resembling a rather enlarged Dragon32. I also have the original instruction manual, complete with receipt stapled in the back - 26/9/79, I believe. ?252 and change, including VAT, for an 8KB 8-bit machine. :?) I also have a bare (uncased) CRT monitor for it, in its original shipping box. I believe I may also have a demo software cassette tape - I've not yet tried to remove the monitor from its box. My plan is to put these on eBay and donate any proceeds to the Bletchley Park museum. Does this seem reasonable? They will cost a fair amount to post, although I am prepared to do that and I am a reasonably competent packer, not of the "chuck it in a box, add some polystyrene peanuts and hope" variety. Personal collection would be preferable, from South London, but for several potential purchasers I imagine this would not be viable. -- Liam Proven ? Profile: http://www.linkedin.com/in/liamproven Email: lproven at cix.co.uk ? GMail/GoogleTalk/Orkut: lproven at gmail.com Tel: +44 20-8685-0498 ? Cell: +44 7939-087884 ? Fax: + 44 870-9151419 AOL/AIM/iChat, Yahoo & Skype: liamproven MSN: lproven at hotmail.com ? ICQ: 73187508

17 years, 3 months

(no subject)

by AA1RONHAM＠aol.com

Hi Brian: My Dad's secretary just gave me the 200 in 1 Science Fair electronics kit, (28-249) but there is no instruction manual. I found your old post (below) and wondered if you still had the pdf for this manual. Thank you very much. Aaron Radio Shack Science Fair manuals YahooMagneticSci Guy magneticsciguy at yahoo.com Sat Nov 4 19:39:00 CST 2006 Previous message: OT: Where have electronics hobby stores gone? Next message: New monitors on old machines Messages sorted by: [ date ][ thread ][ subject ][ author ] Do you know of a group(s) exchanging Radio ShackScience Fair manuals?I'm thinking of rolling all of these into torrent(s)as I get them collected.I have manuals (that I can scan in, in a few phases)for:28-249 "200 in 1"28-267 "75 in One"& need manuals28-245 "20 in 1" 28-259 "130 in One" Thanks much!Brian ************** A Good Credit Score is 700 or Above. See yours in just 2 easy steps! (http://pr.atwola.com/promoclk/100126575x1218822736x1201267884/aol?redir=htt… treport.com%2Fpm%2Fdefault.aspx%3Fsc%3D668072%26hmpgID%3D62%26bcd%3Dfebemailfo oterNO62)

17 years, 3 months

MICRAL documents

by aek＠bitsavers.org

Some people asked about it on comp.os.cpm, so there are a few MICRAL documents up on http://bitsavers.org/pdf/r2e now.

17 years, 3 months

Data General Dasher D200 Terminal on eBay

by eric940＠gmail.com

I recall (some time ago) that a few folks mentioned they were on the lookout for these terminals: http://tinyurl.com/dasher-ebay ebay item #: 200270569660 Always have admired the aesthetics of this terminal, albeit a bit pricey from this seller. (Then again, many items from this seller are pricey.) Disclaimer: I'm not affiliated w/this auction in any manner -- purely an FYI post for those who had expressed interest.

17 years, 3 months

Powering up a 20-year old MicroVAX II

by robert.jarratt＠ntlworld.com

I have just collected a MicroVAX II which has been in storage and has not been powered on for 20 years. This is my first machine of such an age, unfortunately I am not particularly knowledgeable at the electronics level (I studied circuits academically 25+ years ago and can solder a bit, but that is as far as it goes). I know I will need to treat it carefully in order to get it working again. I plan to open it up and make sure I clear out any debris etc, but beyond that I need advice from those with the experience and knowledge that I lack on how to go about powering it up carefully. Thanks Rob

17 years, 3 months

FS: AUI/Thinnet Xceivers, 10bT Xceiver, Plextor 4Plex HH SCSI drive

by jtp＠chinalake.com

More items from cleaning out the lab, nothing free this time (need cash for restoration): All used, minor wear on one LTX-2 and the Hong, others are excellent. (2) Lantronix LTX-2 ThinNet tranceivers, (RCV, HBE switches), T included, Term if you need one, $3 each + shipping in a padded envelope. (1) Hong Technologies 10baseT tranceiver. Slightly larger than normal, Handy leds: Jabber, Link, Polarity, Transmit, Receive, collision, Power. $3 + shipping (1) Plextor SE SCSI, HH CD-ROM, Sept 1995. This is a caddy unit and I will include one caddy, if I can find more I'll add them in. Term and Polarity jumpers, sound out also. Let me know if you want a ribbon cable and term with it, $8 + shipping. Unit is about 2.5 lbs (-) There is also a DEC SCSI Y Cable "BN21V-0B" on ebay Photos avail. Ship from 02421, Boston area, MA Cheers, -j

17 years, 3 months

Our hobby on MSNBC.com

by evan＠snarc.net

http://www.msnbc.msn.com/id/29264722/ MSNBC today posted a slide show about vintage portables. Myself and CHM curator Chris Garcia are quoted. Also, pictures were supplied by myself, Bill Degnan, and Erik Klein. The slide show is pretty much accurate. It's "the truth" but not necessarily "the whole truth" because of a few other products and technical nuances. Anyway, speaking for myself / MARCH / InfoAge Science Center, we're happy to have the mainstream press.

17 years, 3 months

Data Translation DT2803

by teoz＠neo.rr.com

I have a Data Translation DT2803 card I am looking for software for, I think it is 1986 vintage (8 bit ISA) frame grabber and can't find anything on it at the Data translation website (the oldest stuff they have seems to be 16 bit ISA). Anybody have a mirror of their old files?

17 years, 3 months

Randy Cook, TRSDOS, and Datapoint

by frustum＠pacbell.net

It is fairly well known that Randy Cook developed TRSDOS 1.*, 2.1. and 2.2 until he and Tandy had a falling out over the rights to the code. Randy even placed an easter egg that caused his name to be printed out in a copyright message. For TRSDOS 2.2 tandy found the code and patched "RANDY COOK" to read "TANDY CORP" (a three byte difference). Randy developed VTOS, and according to Tim Mann, LDOS was developed by disassembling VTOS 4.0, fixing bugs, and building on top of that. LDOS was eventually licensed by Tandy to be TRSDOS 6.0. OK, the new piece, which I didn't know, was that Randy Cook was an employee of Datapoint when he got the contract to write TRSDOS. He left Datapoint do to consulting work, and everyone assumed he meant on datapoint business. Apparently Datapoint claimed that Randy took DP's code and or "technology" and used that as the basis of TRSDOS. There was a either a lawsuit or a threat of one, but my contact says he wasn't privy to that and so it is hearsay coming from him. I am not familiar with the DP OS (was it really just the Databus language, or was there an OS layer akin to TRSDOS?) Can anybody here compare the two and find threads of similarity?

17 years, 3 months

Available: Victor manuals - southern California

by tosteve＠yahoo.com

Hello, I have two boxes of Victor software manuals only, no software: They include: Pascal MultiPlan BASIC Cobol Word Prefect and more. See attached photos. Sorry, some manuals not visible in photos. I live in Orange County, southern California. Who will make an offer on these? $0.00 is acceptable, but you may be outbid.

17 years, 3 months

EPROM erase times and lifespan

by ian_primus＠yahoo.com

Working with EPROMs, one must have an eraser. I built my own a while back, using a germicidal UV lamp tube, a flourescent fixture, a sealed box and a programmable timer. It works well, and I typically can erase an batch of eproms in like three minutes. At least, when I was working primarily with 2732's and 2764's, I could. Now, I've been needing to use higher capacity chips - and these seem to take longer to erase. Five minutes isn't enough for some. AMD 27C010's seem to take closer to ten minutes to erase. My eraser has a drawer that can accept about a foot of eproms (I used a 12" tube). I could probably cram more on there, but I try to keep them centered under the light. So, if I stick a dozen chips on there, of varying sized and types, and 'nuke' them for five minutes, I'll go and blank-check them, and some will be blank, others will be nearly blank (lots of FF's, but some garbage left), and some don't seem affected at all. I've been trying to come up with a correlation between manufacturer and erase time, but it seems to vary. Last time, I nuked four AMD 27C010's that I pulled off of an old LaserJet font cartridge. Three were unaffected and the other was blanked. I worry about leaving the chips in there too long, since I know too much UV can damage them. But at the same time, I wonder about the lifespan of the UV tube - and how many hours it's good for. (I guess I should have checked the package when I bought it...). So, how much UV exposure does it take to damage an EPROM? Is UV exposure cumulative? For example, if I have a chip that's unaffected by five minutes, and I put it back in for another three - is that the same as as running it for 8 minutes total, or do the charges that the UV is supposed to dissapate simply linger? Are CMOS chips harder to erase, taking a longer time than the older parts? -Ian

17 years, 3 months

[Claimed] HP 1000 F for trade?

by rborsuk＠colourfull.com

Thank you all who have responded. The HP system has been claimed. Rob (always looking for a trade) Borsuk Begin forwarded message: > Subject: HP 1000 F for trade? > > All this talk about HP 1000 F reminded me that I have one of these > beast that I need to get rid of. > Anybody got anything good to trade? (Wang equipment would take > precedence)(TRS-80 and CP/M machines are cool). > > Pics at: > http://gallery.me.com/irisworld#100093 > > Rob > > ps. USA only please. > Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 3 months

MITS 1440 Calculator

by billdeg＠degnanco.com

Does anyone have a MITS 1440 Calculator? I am looking for someone who either has a non-working unit, or one that needs some sort of attention, or someone who would be trusting enough to loan me and a friend their working unit to carefully swap the ROM chips and see which one is bad. I think the risk of damaging a good chip is low, but paranoid attention will be made to avoid accidents. I have been told that the input chip is OK, and the output chip is OK. The control chip seems OK. Most likely the program ROM chip is bad, but it could possibly be the registers or ALU. More likely the ALU than the registers chip.If anyone is interested in this project, feel free to drop me a line. See July 1973 Radio Electronics for more info. Bill D

17 years, 3 months

Working IBM luggable available

by spc＠conman.org

I wrote about this in December, but I figured I'd just give the gentleman's email address in case anyone is interested in this. I think he wanted quite a bit of money for it, so be prepared to haggle a bit. > Subject: Luggable computer > > From: DShoquist at seisint.com > Contact Phone: 561.893.8001 > > I found your name in an article about vintage computer collectors. I have > a working IBM luggable gathering dust and wanted to sell it. If you or > anyone you know is interested, please contact me. -spc (Please be kind 8-)

17 years, 3 months

HP 1000 F for trade?

by rborsuk＠colourfull.com

All this talk about HP 1000 F reminded me that I have one of these beast that I need to get rid of. Anybody got anything good to trade? (Wang equipment would take precedence)(TRS-80 and CP/M machines are cool). Pics at: http://gallery.me.com/irisworld#100093 Rob ps. USA only please. Rob Borsuk email: rborsuk at colourfull.com Colourfull Creations Web: http://www.colourfull.com

17 years, 3 months

Canon LPB-10 info sought.

by aek＠bitsavers.org

> I am looking for info on this very early (1979) laserprinter. I should have docs. Will pull them out of storage and try to get it scanned for you. The earliest Imagen printers used this engine. It was a beast..

17 years, 3 months

Heathkit ET-3400 Epay $10

by jgessling＠yahoo.com

The display doesn't show "CPU UP" (my memory may vary) so it's got some problem. Up to $15 now. Since you made me look around, I noticed there's a google group for this item. http://tech.groups.yahoo.com/group/ET-3400/ Regards, Jim

17 years, 3 months

Radio Shack Science Fair manuals

by rmliu＠hotmail.com

Hi Brian, I read your post back in 2006. You said you have the manuals for "200 in 1" and "75 in 1". Could you email me a copy of both manuals? I actually need the manual for "160 in 1", but maybe the two you got might work. thanks, Robert _________________________________________________________________ Get more out of the Web. Learn 10 hidden secrets of Windows Live. http://windowslive.com/connect/post/jamiethomson.spaces.live.com-Blog-cns!5…

17 years, 3 months

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