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101090 discussions

Intel 4004 from discrete SMD transistors

by wbblair3＠yahoo.com

> http://www.4004.com/ I forgot to point out that they are still requesting volunteers at the project web page linked to above (under the "How can I contact you?" heading). I'm surprised that I can't find anywhere on-line a project to create an entire MCS4 system on a single, low-end FPGA. Am I just missing it?

17 years, 8 months

COBOL quote in the news

by cclist＠sydex.com

>From http://www.sacbee.com/111/story/1132588.html concerning the California budget crisis: The state payroll system is based on the COBOL, or Common Business Oriented Language, programming language - a code first introduced in 1959 and popularized in the 1960s and 1970s. "COBOL programmers are hard to come by these days," said Fred Forrer, the Sacramento-based CEO of MGT of America, a public-sector consulting firm. "It's certainly not a language that is taught. Oftentimes, you have to rely on retired annuitants to come back and help maintain the system until you're able to find a replacement." What does California's DMV use? Cheers, Chuck

17 years, 8 months

IBM EGA Programming manual: anyone have a copy?

by Watzman＠neo.rr.com

I have a copy of it (original IBM EGA manual), apparently I made it back in the 1980's, it's definitely a copy but it's exactly like the original (e.g. double sided in the original 5.5 x 8.5 format). It's 168 pages ... it would be a hell of a job to scan or copy, and since it's an odd page size, I can't run it through an ADF "automatically". Barry Watzman Watzman at neo.rr.com ------------------------------ Message: 12 Date: Mon, 11 Aug 2008 22:39:12 -0400 From: Jonathan Gevaryahu <jzg22 at drexel.edu> Subject: IBM EGA Programming manual: anyone have a copy? To: cctech at classiccmp.org Message-ID: <48A0F7D0.3060606 at drexel.edu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed I'm searching for a copy of the official IBM EGA programming manual/reference manual. If I recall correctly, in order to actually GET that manual you needed to have bought the $150? CGA/MDA programming/reference manual (or something like that) and have sent in the little registration card, and IBM sent you the EGA one in the mail. Does anyone have a copy of it? (a copy of the cga/mda one would be nice too, but isn't nearly as important) Contact me off-list (or on-list if you'd like) if you do, I'm quite willing to pay for photocopying/scanning/time/etc. -- Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu ------------------------------

17 years, 8 months

DEC prototype cards

by jack.rubin＠ameritech.net

Douglas Electronics still supplies Omnibus and other DEC prototyping cards at very reasonable prices - http://www.douglas.com/hardware/pcbs/breadboards/digital.html . Jack

17 years, 8 months

Interesting article on computer history

by fire＠dls.net

http://www.computerworld.com/action/article.do? command=printArticleBasic&articleId=9111341 Don't have anything to add because I did not start with computers until 1978. Bradley

17 years, 8 months

Forgotten PC History

by brain＠jbrain.com

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… -- Jim Brain, Brain Innovations (X) brain at jbrain.com Dabbling in WWW, Embedded Systems, Old CBM computers, and Good Times! Home: http://www.jbrain.com

17 years, 8 months

IBM EGA Programming manual: anyone have a copy?

by jzg22＠drexel.edu

I'm searching for a copy of the official IBM EGA programming manual/reference manual. If I recall correctly, in order to actually GET that manual you needed to have bought the $150? CGA/MDA programming/reference manual (or something like that) and have sent in the little registration card, and IBM sent you the EGA one in the mail. Does anyone have a copy of it? (a copy of the cga/mda one would be nice too, but isn't nearly as important) Contact me off-list (or on-list if you'd like) if you do, I'm quite willing to pay for photocopying/scanning/time/etc. -- Jonathan Gevaryahu jgevaryahu(@t)hotmail(d0t)com jzg22(@t)drexel(d0t)edu

17 years, 8 months

WTD: DEC 11/40 power supply (main unit) model H74

by billdeg＠degnanco.com

The part number on the front is "H74 a" and it's the big part of the power supply in the back. In front (looking from the side) are 5 "h754" modules. The modules and the console power are attached to the "H74 a" Other H74x supplies should work. Here is the wording on the unit: Dec Power Supply H74 a Caution AC & DC OUTPUTS ARE PRESENT WHEN LIGHT IS ON POWER ON (( )) ------------ where (( )) = the light bulb. System was working recently.....The supply's red indicator light no longer comes on, nor do the console lights, though the fans still run. In the meantime I will test with a volt meter and so on, maybe there's a bad connection. Thanks in advance Bill

17 years, 8 months

PCB Artwork for DEC card edge fingers

by gerhard.kreuzer＠liftoff.at

Hi, I have a cad system (Altium), which can convert some formats, maybe I could convert EAGLE files. But, if you tell me, how the final board should be, and its not so much work, I can do it for you and you get Gerber files, which are accepted by most of the PCB manufactures. Cheers Gerhard

17 years, 8 months

Barbie PC

by alhartman＠yahoo.com

Barbie PC's are VERY expandable. They have 4 USB ports (at least the one I have does), so you can easily put a USB hub on there to have even more ports. I've put USB wiireless adapters, USB NIC adapters on my sisters. I've put a 512mb RAM DIMM in it, and put a better CD-ROM drive in it. It came with Windows 98, but runs fine on Windows XP Home or Pro. It's not a top end box at all, but can be a nice Internet/Wordprocessing computer. There was also a Hot Wheels Computer which had a Blue and Yellow case with Flame stickers on it. Changing out the battery is no big deal. I just did that for my sisters unit. They are old and slow, but I'm sure there are lots of uses for them. Al

17 years, 8 months

IBM Greystone Display Station Manuals

by technobug＠comcast.net

I was at my local scrapper recently and ran across a number of manuals for the IBM Grelystone Display Station in the dumpster: Maintenance Analysis Procedures Greystone Parts Catalog Maintenance Information Manual If anyone has interest, they are available for postage. CRC

17 years, 8 months

dc motors

by aek＠bitsavers.org

one of these on each rear wheel would be pretty scary http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=130244335350

17 years, 8 months

4004/8008 (was Re: Forgotten PC History)

by wbblair3＠yahoo.com

Probably been mentioned here before, but I did a search on FPGA and 4004 and found this interesting page: http://www.4004.com/

17 years, 8 months

Upgrading early BIOS

by dm561＠torfree.net

On Sun, Aug 10, 2008 at 2:11 PM, <Hollandia at ccountry.net> wrote: > One of my machines is an old Packard-Bell Legend 610 machine, to which I am > trying to fit a second hard drive. > > The machine will not recognize any modern (or semi-modern) hard drive I have > attempted to fit. I have tried various master/slave combinations, to no avail. > > My guess is that this is due to the BIOS being of am early type. The BIOS > chip is a socketed DIP package and the lettering on it is too faded to read. > The screen boot-up display is this: > > PhoenixBIOS(TM) A486 Version 1.01 > PB400 OPTI 486WB > Reference ID 08 > > Is this a reasonable guess? > > If so, what might be done by way of a BIOS upgrade? > > Thanks, > > Kurt > > --------------------- If after all the good advice here you still haven't got it working, this is the sort of issue that's pretty commonly discussed and solved on the Vintage Computer Forum which deals largely with old PC problems. Might be worth a look. http://www.vintage-computer.com/vcforum/index.php m

17 years, 8 months

Panasonic HHC EPROMs?

by dbetz＠xlisper.com

I have 8 EPROMS in carriers, some MCM68764C and some MCM68766C. I believe they go with the Panasonic HHC but I'm not sure. In any case, I don't have an HHC anymore so I don't need them. Anyone interested? Send me your mailing address off-list and I'll send them to you.

17 years, 8 months

FS: 1980's Intel/Harris/Hitachi data books

by charlesmorris800＠centurytel.net

The barn cleanup continues. I found a box of data books that date back to my first EE job (early 1980's). See picture for titles. http://tinypic.com/view.php?pic=x51mkl&s=4 Please contact me off-list if interested in some or all. There are more data books buried in those piles of ancient boxes, too... will post as I uncover them. thanks Charles

17 years, 8 months

pdp 11/70 in colorado

by gerhard.kreuzer＠liftoff.at

Hi, yes, are you able to ship it, I pay shipment, and packaging, no question. Cheers Gerhard

17 years, 8 months

pdp 11/70 in colorado

by emu＠e-bbes.com

Hi all, few month ago sombody on this list asked for a 11/70 in colorado. still interested ? Cheers

17 years, 8 months

Computer collectors are no longer the dweebiest people in the

by sellam＠vintagetech.com

Tony blathered: > I don't collect in the hope that I'll be able to sell them later for > more money. No, Tony, I believe you are entirely unique in this regard as everyone else subscribed here is just in it for the money. Weirdo. -- 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 ]

17 years, 8 months

More ETH Lilith goodies available

by julianskidmore＠yahoo.com

Hi folks, >CPLD's are cheap and easy to program now days. > I suspect getting high speed 2901's and proms > for any micro-programed machine is tricky. Over the past 6 to 9 months I've become rather intrigued about Lilith. One of the great things about the design of MCode (the Lilith's stack-based bytecode) is that it lends itself to being emulated directly by a Microcontroller, rather than emulating the machine at a Microcode level (170ns / microinstruction). My preliminary calculations imply that a low-end 60MHz ARM Microcontroller attached to 128k (or 256K of RAM) could emulate a Lilith in this way at full-speed even if it didn't have a proper memory bus (i.e you access the RAM via I/O Ports). > I suspect 16bit addressing and data seems to be the limiting > factor of this design. The later Liliths accessed memory as 2 banks of 64KW => 256Kb in total. >>> But can one build the hardware from scratch? >>> None of this software emulation. Well, I suppose the ARM version would be software emulation, but on the other hand, it's a dedicated hardware / software combination and it'd probably give you a Lilith for around $12! ... I wonder if MIT & India would be interested ;-) -cheers from Julz @P

17 years, 8 months

Forgotten PC History

by mcguire＠neurotica.com

On Sun, August 10, 2008 1:10 pm, Sridhar Ayengar wrote: > Dave McGuire wrote: >> On Aug 9, 2008, at 3:49 PM, Philip Belben wrote: >>> That makes sense. I think someone said it already: if the chip was a >>> custom job for a lowish-volume contract, Intel wouldn't want to go and >>> find a new packaging contractor for it. >> >> Did they actually outsource their packaging? > > That's actually a fairly common occurrence. I know it is now, but I didn't think it was in the 1960s and early 1970s. -Dave -- Dave McGuire Port Charlotte, FL

17 years, 8 months

More ETH Lilith goodies available.

by jos.mar＠bluewin.ch

Those with an interest in the ETH Lilith Modula-2 should point their FTP clients to ftp://jdreesen.dyndns.org/ftp/lilith where they will find plenty of data concerning that machine. Most important is a binary image of the Lilith Systemdisk, and a directory containing all files ( more then 700..) of that systemdisk. Among these files are : Medos binaries and source code. Modula-2 compiler binaries with source code. Lilith system utilities with source code. Bootfiles and system files. Microcode sources and assembler Manual Also available are hardware docu and some screenshots. Enjoy , Jos Dreesen Server is on a basic DSL line, so download speeds will vary....

17 years, 8 months

Computer collectors are no longer the dweebiest people in the world...

by sellam＠vintagetech.com

No, now we can point at the toaster collectors: http://www.toastermuseum.com Navigate your way over to "SPECIALS" and then "What is it worth?" to read up on toaster pricing. It will seem strangely familiar. -- 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 ]

17 years, 8 months

Forgotten PC History

by iamvirtual＠gmail.com

Roy J. Tellason wrote: > There were also those "flatpacks" which I never could figure out. A > precursor > to surface mount? Something else? Eric Smith wrote: > Yes, for military applications. For instance, the Apollo Guidance > Computer is full of chips in flatpacks. > > I'm not an expert on early IC packaging, but AFAIK the flatpack predated > the DIP. Prior to the DIP, most ICs had 10 pins or fewer, and were > offered in flatpacks or round metal cans. Here is a picture of a circuit board which is a flight spare for the Instrumentation Unit of the Saturn V showing the flat packs IBM designed for the Apollo missions: http://www.iamvirtual.ca/collection/space/SaturnVIUBoard.html

17 years, 8 months

NEC Spinwriter thimble

by dm561＠torfree.net

While cleaning out some junk I found a NEC thimble (Tech Math/Times Roman). One of the fingers is a little shorter than the rest, but it doesn't look broken (and the LC char is blank, unlike the rest); is this a normal index key, or is it in fact broken? And if it's OK, does anyone want it? m

17 years, 8 months

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