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PDP-7

by aek＠spies.com

but, is there any SOFTWARE?

22 years, 11 months

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.

22 years, 11 months

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

22 years, 11 months

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!"

22 years, 11 months

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

22 years, 11 months

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/ |

22 years, 11 months

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.

22 years, 11 months

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?????????????

22 years, 11 months

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

22 years, 11 months

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.

22 years, 11 months

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.

22 years, 11 months

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

22 years, 11 months

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

22 years, 11 months

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)

22 years, 11 months

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

22 years, 11 months

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>

22 years, 11 months

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" -----------

22 years, 11 months

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

22 years, 11 months

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

22 years, 11 months

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 *

22 years, 11 months

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>

22 years, 11 months

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

22 years, 11 months

Need manual for Tek 922 scope

by Cess120＠aol.com

I have the T921/922 SVC manual make offer Larry

22 years, 11 months

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?)

22 years, 11 months

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

22 years, 11 months

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