test-drb October 2003

test-drb@ccmp.vtda.org

252 participants
500 discussions

by rigdonj＠cfl.rr.com

I found a pile of NOS intel D3621s today. I THINK these are Bipolar PROMs but I'm not sure and I can't find anything on them on my manuals or on the net. Can anyone help? BTW most of them are dated 1975. Joe

20 years, 9 months

Acorn Econet

by pete＠dunnington.u-net.com

On Oct 9, 22:56, Tony Duell wrote: > Incidentally, have you ever tried to add 'real' sideways RAM to a B+? > The buit-in RAM only gives 12K of sideways RAM, which is fairly useless. > I was wondering about adding a 62256 chip (or similar) in one of the > EPROM sockets, with the WE/ line connected appropriately. I've never tried it because I have two "proper" Beebs (the kind with ATPL Sidewise boards, second processors, and case clips instead of screws :-)) a B+ 128K, and a Master Turbo. I don't see any reason it shouldn't work, though. I always fit a write-protect/enable/disable switch to sideways RAM, though. -- Pete Peter Turnbull Network Manager University of York

20 years, 9 months

intel 3621 specs?

by aek＠spies.com

256*4 +------+ A6 |1 16| Vcc A5 |2 15| A7 A4 |3 14| CE2/ A3 |4 13| CE1/ A0 |5 12| O1 A1 |6 11| O2 A2 |7 10| O3 GND|8 9| O4 +------+ Signetics MMI TI Harris Raytheon AMD National Intel --------- --- -- ------ -------- --- -------- ----- TS 82S129 (50ns) 6301-1 24S10 7611-5 29661 27S21 74S287 3621 82S129A(27ns) 63S141 - 7611A - 27S21A - -

20 years, 9 months

12 bit S-100 memory card ????

by rigdonj＠cfl.rr.com

Found this in a pile of scrap boards today. It looks like a S-100 memory board but has 2 banks of 12 memory chips. The chips are AM9016EPCs which I think are 16k x 1 DRAMS. Also there's no 5 volt regulator or address jumpers or switches. It appears to be a 32k x 12 bit memory card for a S-100 system that has built in 5 regulation and at a fix address. Anybody have any idea what system it's for? The only markings on the card are what looks like an overlapping C and H with the opening on the C facing down instead of to the right. The H is below and to the left of the C. Joe

20 years, 9 months

Super Elf goes for over $300

by jrkeys＠concentric.net

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2756553273

20 years, 9 months

Erasing Eprom by using UV-Led

by A.Haunstetter＠VR-Web.de

Hello Mr. Shannon, in the topic "A way to erase OTP components?" I read that you succeeded to erase windowed 27C512 using a UV-Led. Because I'm about to build a combined Programmer/Eraser, where erasing shall be done with UV-Led, I like to ask you about your experiences. What type of Led do you use? How long do you need to erase? What was the distance between Led and Chip? Did you made Test with other devices? I hope you take a little bit of your time to answer me. With best regards Adrian Haunstetter

20 years, 9 months

VCF 6.0 is this weekend!

by vcf＠siconic.com

Vintage Computer Festival Saturday, October 11 through Sunday, October 12 10am until 6pm Daily Computer History Museum 1401 N. Shoreline Blvd., Mountain View, California http://www.vintage.org/2003/main/ This is the last VCF 6.0 update. Be sure to come out to the Vintage Computer Festival this weekend or you will miss the best VCF ever! We've had some last minute schedule changes and additions to the speaker schedule. The schedule is as follows: Saturday, October 11 Time Speaker Topic -------- ------------------- -------------------------------------- 10:00 AM Evan Koblentz History of the PDA 11:00 AM Zbigniew Stachniak Microcomputing in Canada 1973-1983 11:30 AM Christine Finn Collecting the Collectors 12:00 PM Len Shustek Keynote Speech 12:30 PM Lynne & Bill Jolitz The Symmetric 375 and Berkeley Unix 1:00 PM Xerox Alto Panel Xerox Alto 30th Birthday Bash! Sunday, October 12 Time Speaker Topic -------- ------------------- -------------------------------------- 10:00 AM Joey Tuttle A Personal History of the IBM 5100 11:00 AM Forth Panel Using Forth with Vintage Computers 11:30 AM Todd Fischer IMSAI History & the New IMSAI Series 2 12:00 PM Jef Raskin The Humane Interface 12:30 PM Sellam Ismail VCF Shenanigans 1:00 PM Bruce Damer Joys and Trials of Computer Collecting The Xerox Alto panel has expanded, with Charles Simonyi, Peter Deutsch, and Dave Robson being added to the panel. This is going to be an incredible reunion of Xerox PARC luminaries, not to mention the amazing showing of numerous Xerox Alto and D-machines that are on display in the "Groove Lounge". Come help celebrate the 30th birthday of the Xerox Alto with cake and maybe even a deliciously nerdy birthday cheer. Also, be sure to make it to the Computer History Museum book sale on Saturday at 2:00pm. Museum members will be allowed advanced admission to the booksale before the rest of the public. More information about the book sale can be found here: http://www.computerhistory.org/events/vcf6/ Please check out the carpool message board in the VCF 6.0 BBS to see if there are folks in need of a ride that you may be able to accomodate. http://www.vintage.org/2003/main/bbs.php?directive=index:VCF60:CARPOOL:0 Here are directions to the Computer History Museum: http://www.vintage.org/2003/main/directions.php I'll see you at VCF 6.0! Best regards, Sellam Ismail Producer Vintage Computer Festival -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org [ Old computing resources for business || Buy/Sell/Trade Vintage Computers ] [ and academia at www.VintageTech.com || at http://marketplace.vintage.org ]

20 years, 9 months

What HP OS could it be??

by rhudson＠cnonline.net

Ok HP experts out there One saturday my programming class in high school went on a field trip to Santa Clara University. We got to try out some of the minicomputers there. I asked the people who were with us if I could come back and use the computers any other time, they said "sure as long as you don't get in anyone's way", so for almost a year, in the dark morning hours I would go down and program in fortran.. using the card punches and seeing my output on the line printer. What OS was I running? Here's everything I remember: HP2100, Card Reader, Beehive CRT terminal, Line Printer, Flat-slip in horizontal cartridge disk drive/with fixed platter, Paper tape punch and reader, and a plotter The machine was in the engineering department of University of Santa Clara, in around 1976 Jobs were written in Algol or Fortran, and punched on cards. Job control cards had //somthing blah.... The boot loader was stored at (i think) 102077 (punch this in the switch register and hit run???) What was I using?

20 years, 9 months

Re. HP64000, aka offering help to duplicate HP64K disquettes

by Bissonnette.Michel＠ireq.ca

Hi! I was brousing the web to see if something new on the web related to that good old HP 64000 beast. I collected HP64K related stuff since 6 years and I have about 60 Manuals titles and 40x 5 inches Floppy softwares disk for it. I Have been faced to the problem of preserving the files on those old originals Floppies. With the time I found a software for that usage and wrote a procedure to duplicates the diskettes with a PC. I will be glad to help anybody who wish to preserve that heritage especially if you can offer something for trade. Ex. Cards, pods, accessories, manual, software diskettes, expertise, etc. Michel B. VE2FYG ------------------------------------------------------- HP64000 Steven N. Hirsch cctech(a)classiccmp.org Tue May 6 06:45:04 2003 On Sun, 4 May 2003, David and Nancy Keim Comley wrote: > I brought home an HP64000 development system today. It has the emulation > pods for the 68000 and 8080A processors, an HP-IB cable plus some other odds > and ends in the backpack. A peak at the back indicated that it is crammed > full of cards and 128K memory. > > Unfortunately what it doesn't have is either software or manuals, so this is > a request to the group for help in that respect. I believe that there was a > ton of software originally available for this unit to support various > options and development tools, and I think what I am looking for is at least > the operating system on floppy so that I can boot it up. Any background > material on the 64000 would also be appreciated. You may have yelled just in time. At one point I had (5) of these things in my garage. Most of the extra hardware is gone (although I may have one or two extra pods), but I did hang on to a large box of documentation and have all the latest-and-greatest software on diskette. I was planning a trip to the landfill, but will hold off on that in case you want any of it. If you are located within driving distance of Burlington, VT, you could also cart away one of the floor-standing 8" hard-disk units (weighs > 100lbs. and stores a whopping 5-MB). I wouldn't even consider shipping that beast. Let me know if you are interested in the docs. The diskettes would have to be duplicated, which means finding time and space to fire up the remaining system unit and remember how to use it <g>. Perhaps someone on the list knows of a utility which permits copying the HP64k diskettes on a PC? Steve

20 years, 9 months

CORRECTION: 386si card was: Sota 386i card ?

by rigdonj＠cfl.rr.com

Oops! make that 386 SI not 386 I. Joe > >Found one of these in a scrap pile today. I'm thinking of stuffing it into my old PC to get a bit better performace without permanently altering the PC. Can anyone give me more information about it? What are the large connectors at the top and bottom of the card for? What is the PLCC socket for? Do I need drivers for the card? etc > > Joe > >PS I just noticed that even though they call it a 386i it actually has an intel 8086-2 CPU.

20 years, 9 months

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test-drb October 2003