test-drb August 2008

test-drb@ccmp.vtda.org

202 participants
323 discussions

by ajp166＠bellatlantic.net

> >Subject: Re: Forgotten PC History > From: "bfranchuk at jetnet.ab.ca" <bfranchuk at jetnet.ab.ca> > Date: Fri, 08 Aug 2008 21:04:53 -0600 > To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org> > >Roy J. Tellason wrote: >> There were also those "flatpacks" which I never could figure out. A precursor >> to surface mount? Something else? >> >> >I would guess so, but I've never seen a flat pack in the flesh myself so >I can't >say. > I had some of the dual 3 input parts used in the AGC block2 and still have a few uA709 opamps in the 8leg flavor. Package actually was flat ceramic hermetic and lived formany years for mil, High rel, and extended temp appications for a cost premium. Look in Burr brown, Intersil, or old RCA data books before 1976 and you may see samples of the package. Allison

16 years, 4 months

old manuals in Spring Hill Florida

by ygehrich＠yahoo.com

I've got a lot of old manuals (some very old) including PC, MAC, Commodore, TI and much, much more. I'm going to be putting them in the trash in about a week. If anybody would like to come pick up all of them let me know. I have one batch now and will have other batches in the future. Not going to go through them to look for anything specific.

16 years, 4 months

LocalTalk

by trag＠io.com

> Date: Tue, 05 Aug 2008 16:17:32 -0400 > From: Sridhar Ayengar <ploopster at gmail.com> > Subject: LocalTalk > > Hi. I'm looking for a LocalTalk->Ethernet bridge and some LocalTalk > cables. Anyone have any available? I don't have one available but the product names you are looking for include: AsantePrint MicroAsanteprint AsanteTalk in order from oldest to more recent. All three of those were by Asante. There were similar products from Farallon and Dayna, but I do not remember the specific product names. All of those will bridge from LocalTalk to Ethernet, but I think they only bridge the AppleTalk protocols and not TCP/IP. The latter two are about the size of a deck of cards and pretty much look identical, except there's a variation on the middle one with a BNC connector in addition to the RJ45 jack. The earlier two have more network management features which one is unlikely to use in a home network. For LocalTalk cabling, unless there's some reason you really want to use original LocalTalk cabling, you should get PhoneNet connectors and use phone cable for the connections. The PhoneNet connectors are a dongle (available in many different brands) which plug into the serial (LocalTalk) port and have two RJ11 jacks on the other end. The RJ11 jacks can be used to form a daisy chain network. If a PhoneNet connector is at the end of the chain (only one jack used) then the unused jack should have a terminating resistor installed. I don't remember the value. Finally, PhoneNet uses the two wires in four conductor cable, which the telephone system does not use (yellow/black vs. red/green). However, there are a lot of telephone cables out there shipped with modems which only include the telephone pair and not the pair which PhoneNet needs. You can spend a lot of time trying to diagnose a PhoneNet connectivity problem when the necessary wires are absent from your cable. :-) When ethernet became very affordable, old PhoneNet equipment was more or less being given away free. Most of it has been disposed of by now, so it may be a bit challenging to find, but probably not too challenging. I remember seeing a lot of 150 PhoneNet dongles go for something like $.99 plus shipping. :-) But that was probably eight years ago. Jeff Walther

16 years, 4 months

Two computer books available

by charlesmorris800＠centurytel.net

While cleaning out my barn, I found the following two paperback books, that may be of interest to someone here. 1) small paperback "Varian DATA 620/i computer manual" (Bulletin 605-A, April 1968). 2) "The Helios Operating System" by Perihelion Software Ltd (1989). Says it's an OS designed to run on transputer architectures, but I guess you'd know that if you want it :) If interested please contact me off-list. Just looking for postage costs and a token amount to cover the trip to the post office. thanks Charles

16 years, 4 months

Forgotten PC History

by trebor72＠execpc.com

cctalk-request at classiccmp.org wrote: > Send cctalk mailing list submissions to > cctalk at classiccmp.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.classiccmp.org/mailman/listinfo/cctalk > or, via email, send a message with subject or body 'help' to > cctalk-request at classiccmp.org > > You can reach the person managing the list at > cctalk-owner at classiccmp.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of cctalk digest..." > > Today's Topics: > 1. Forgotten PC History (Jim Brain) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 08 Aug 2008 12:03:27 -0500 > From: Jim Brain <brain at jbrain.com> > Subject: Forgotten PC History > To: Classic Computer Talk <cctalk at classiccmp.org> > Message-ID: <489C7C5F.7000008 at jbrain.com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > I don't mean to repost, but I had not seen this posted as yet: > > http://www.computerworld.com/action/article.do?command=viewArticleBasic&art… > > WOW; Does that bring back Memories. My first Computer job was for a Data Processing Outfit in New Jersey as a Computer room Operator. One day they brought in a Machine "Datapoint 2200" and I said I can program that. I had gone to a Programmers school a couple of years before. I at some point dumped the Datapoint's 8K of memory to the Printer then decoded it and re-assembled a program written in Assembly to intake three 11 line screens of data. It had Interrupts and You could even back track fields to correct them. Took me six months. Gave it to the Rep who eventually slid it into the Round File where some of my Best work ended up over the years. Wish I had been able to save the listing. The Manual for the editor said "Go have a cup of coffee while your files were being copied from the rear cassette to the front. I was still working on the Datapoint's in 1979 when I left the firm and moved to Wisconsin. I moved on to CP/M then the PC's as well as Learning how to Program for the IBM Series/1 in EDL. Now there was a Language. Still got a 110 Volt IBM 4952 in the Basement but never got it running. Wish I could find a GURU who could help me get it up and running. Kick my self for not doing it back in the early 90's when I brought it home. I was doing consulting on the Series/1 then but didn't find the time. Oh Well Bob in Wisconsin

16 years, 4 months

Where to find memory ICs?

by trixter＠oldskool.org

Have a working Intel Above Board Plus 8 with 2MB RAM and would like to populate it to the full 8MB. It will take 120ns or faster 1mbit chips -- but where can one find that kind of thing nowadays? Are those still commercially available or am I going to have to scavenge them from somewhere else? Manual lists acceptable part numbers like: Fujitsu MB81C1000P-xx Hitachi HM511000P-xxS Mitsubishi M5M41000AP-xx Motorola M5M511000P-xx NEC UPD421000C-xx NMB AAA1M100-xx OKI M511000RS-xx Samsung KM41C1000P-xx TI TMS4C1024-xx Toshiba TC511000P-xx ...etc but google searches haven't been very fruitful (that is, the pages returned when I search for IC part numbers don't return vendors with plain pricing/availability info). I just want a few tubes of these to populate the board, I'm not looking for a box of 'em :-) Any pointers? -- Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/ Help our electronic games project: http://www.mobygames.com/ Or check out some trippy MindCandy at http://www.mindcandydvd.com/ A child borne of the home computer wars: http://trixter.wordpress.com/

16 years, 4 months

IBM Model M keyboard spares

by lproven＠gmail.com

/The/ classic PC keyboard, IMHO. Alas, one of my treasured 'boards fell off a table and its space bar is shattered. Anyone know where I could buy a spare spacebar? -- 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: liamproven at aol.com ? MSN/Messenger: lproven at hotmail.com Yahoo: liamproven at yahoo.co.uk ? Skype: liamproven ? ICQ: 73187508

16 years, 4 months

IC collecting

by Brennan.Barber＠softprocorp.com

Hi, I cam across your posting and wanted to see if you also collected IC's? Finding other collectors is a rarity for me so I thought I would shoot you and e-mail. I collect clones (russian, eastern block, etc.), Intel engineering samples and any IBM cpus. Brennan

16 years, 4 months

vintagecomputer.net updated

by billdeg＠degnanco.com

http://vintagecomputer.net/ This REV is titled "From Giant Brains to Hobby Computers - 1957 to 1977" "Giant Brains" from Radio & Television News Jan 1957 - Including pictures of UNIVAC, IBM 650, Mark I "An Informal History of the Hobby Computer Market" from the Jan-Feb premier issue of Personal Computing Recent project work and pictures -Bill

16 years, 4 months

HP 5036A microprocessor lab - searching for copy of "Practical Microprocessors"

by ssj152＠centurytel.net

Simon, Sorry, I have only the one copy. I have seen other copies sold on eBay, but have not been willing to pay the $100 USD or more that they have sold for. It is really a shame that no one has been able or willing to have one scanned, but that would take a LOT of work - the manual is over an inch thick. Without proper OCR it would be a PDF of pictures, which load very slowly and would make the scan huge. I've seen quite a few manuals done this way and they aren't nearly as usable as the OCR'd variety. I thought about scanning mine back in 2003, and even bought a flat-bed scanner w/OCR software, but it wasn't up to the job at that time. Better equipment and software would have been necessary, along with cutting away the spine of the manual. Today there are better and more affordable solutions, but I am not up to doing it as my health has forced me to retire. I'm not willing to sell my manual in case anyone is wondering, sorry. This looks like an opportunity for someone with the manual, proper equipment, and time - anyone? Simon, do you have the required setup to do this without damaging the book? Regards Stuart Johnson --- On Aug 6, 2008, at 9:38 AM, cctalk-request at classiccmp.org wrote: > Hi Stuart, > > > > This is a long shot, but here goes... > > I have an HP5036A lab, but lack the book. > > Searching, I found this on a forum from way back in 2003: > > > "Yes, I managed to get a manual, by watching auctions on eBay. In > fact, I > bought another HP 5036A plus manual and let the seller keep the > hardware to > save shipping costs from England to the US. The manual is softcover > and > would not be easy to copy without cutting the spine off, which would > ruin > its value. > > Don't give up, though. I know someone that has a manual that has > been cut up > and copied and I'm trying to get it so that I can make an Acrobat > PDF file > of it. Stuart Johnson" > > I don't suppose you ever got a .pdf copy scanned? > Just interested. > > > > Cheers, > > Simon Coleby > > Customer Service Centre. > > Agilent Technologies UK Limited, Registered Office: 710 Wharfedale > Road, Winnersh Triangle, Wokingham, Berkshire, RG41 5TP - Registered > No. 03809903 >

16 years, 4 months

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test-drb August 2008