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101090 discussions

Collecting old microprocessors (as opposed to Computers)

by allisonp＠world.std.com

> The oldest CPU type I have is an NEC 8080A. Still trying to figure out > how to make use of it. The legs are pretty corroded (used to live in > humid climates). I could give you a dozen of them (all pre '80 date code or older!). You need other parts to build a system using it. Minimally you need 8224 clock chip and a 8bit latch or 8228 to get the status signals off the buss. The rest if perpherals and memory. Others from that (pre 1980) era I have: IMSAI IMP-48 (works but, I really need a manual or schematic!!!) circa '79 If you've never seen one it's a small board with relays and opto IO for control use, tty interface, cassette IO led display and keyboard for programming(in hex!). National SC/MP 8a500 cpu(late '78) RCA1802(base cosmac elf 1979, board from the first PE article) 6502(old part) TI9900 chip on board(technico super starter system) moto 6800D1 kit('75-76) LSI-11/03 card that's a tad older them most of those (functional too). I also have a small system using the National nibbleBASIC (8070) chip in 1980. Allison

29 years, 1 month

Altairs and old stories

by allisonp＠world.std.com

> I know - this will be something I do in Electronics class next year. > While everyone else makes an oscillator or something stupid, I'll build > an Imsai! You laugh, I did something along that line (1971) only it was a solidstate Oscope of my own design. I wanted the class for acces to the tinshop so I could fabricate the steel shields(for the crt) and chassis. If it were three years later it would have been a mark-8! While off the subject... I had a Horizon up in '78 and put the NS* version of the pascal P-system. Since I knew zip about pascal I decided to take a course that used pascal, so happens it was data structures. Blew the proffessors mind when after going on about the 1180 the class would use for assignments I asked if I could use my own system if it conformed to Niklus&wirth. Seems he didn't believe me until I brough the whole mess (left the printer behind) with me the next class and set it up! It was the begining of the revolution as Apples were also just starting to be seen. A year later that declaration of I happen to have a suitable system was no longer an item of skepticism. Sorta like the pocket calc in my EE junior year.... ;-) Allison

29 years, 1 month

Altairs (was RE: Collector Article)

by allisonp＠world.std.com

> Define "plans". I have full sets of the schematics for the units in my > collection (as I suspect many do), but if you are talking about the > mechanical drawings for things like the case, boards, etc., I am not awar > of those ever being made available. The case was a standard box available at the time. Some of the inside brackets were custom as were the layouts. I've never seen a full printset, and I wonder if there really was. Allison

29 years, 1 month

FS: BOOK The History of Computers

by ynagasaw＠ic.sunysb.edu

For Sale: The History of Computers -A Family Alubum of Computer Genealogy- by Les Freed ZD press ISBN 1-56276-275-3 all color and lots of pictures and illustrations $12 (shipping included within the United States, original price is $24.95)

29 years, 1 month

Altairs (was RE: Collector Article)

by kaikal＠MICROSOFT.com

| Does anyone still have the PLANS for one? If you mean schematics, yes. The Altair was built from a kit, not plans. You may be thinking of the Scelbi Mark 8, which was built from plans. Kai

29 years, 1 month

Altairs (was RE: Collector Article)

by allisonp＠world.std.com

> Does anyone still have the PLANS for one? Yes but I'd build an imsai! The altair was first but not that nice technically. Also the case, front pannel and many componenets would have to be fabricated. I happen to have a spare case and power transformer. I'd love to get an imsai or 8800b box so I could fully retire(not sell) the altair I have. Allison

29 years, 1 month

FS on eBay: Apple, Atari, Commodore

by gmast＠polymail.cpunix.calpoly.edu

I listed a few systems on the auction at eBay this week. Still trying to clean up around here. If interested, please go to the link below for more info or email me with questions. Thanks, Greg Here they are: Pair Apple IIc, IIe Handcontrollers (photo) Current bid: $1.00 Auction ends on: 06/26/97, 12:40:28 PDT http://www2.ebay.com/aw/itemfast.cgi?item=sfx4367 Commodore 128D System Bidding starts at: $3.00 Auction ends on: 06/26/97, 21:12:47 PDT http://www2.ebay.com/aw/itemfast.cgi?item=qrk459038 Commodore 64 - White Bidding starts at: $3.00 Auction ends on: 06/26/97, 21:16:04 PDT http://www2.ebay.com/aw/itemfast.cgi?item=wbj37502 Apple IIC System with External Floppy Bidding starts at: $3.00 Auction ends on: 06/26/97, 21:22:31 PDT http://www2.ebay.com/aw/itemfast.cgi?item=hxz389 Atari 520ST Computer, Floppy, Mouse, etc Bidding starts at: $3.00 Auction ends on: 06/26/97, 21:26:58 PDT http://www2.ebay.com/aw/itemfast.cgi?item=czo512

29 years, 1 month

Altairs (was RE: Collector Article)

by kaikal＠MICROSOFT.com

I'm kind of curious how many Altairs we have on this list. I've got 3... I know that Jim has at least 2. Who else? | From: Marvin | Someone that | contacted me recently said that they had sold their Altair for $3000. Whom? | Another story I heard (true?, I don't know) was that someone advertised | their Altair on the net for $4000. This person was flamed for asking so | much, and his only comeback was that it had already sold. If this happened, it had to have been before 3/95, since there is no reference to it in DejaNews. | There was a | reference in TCJ by one of the editors(?) that they wouldn't be | surprised by the price reaching $10,000. I agree, though it's going to take a few years. People tend to acquire items that they wanted when they were in high school or college. Those people are now in their early forties, and that syndrome doesn't really get going full steam until 50-60 (my father, with 7 Corvettes, is a perfect example). I'd put the Altairs at $10K+ in 10 years. They sky's the limit in 20 years, maybe $100K (all in today's money of course). One reason for the expected price skyrocket is the number of people like me (and several others on this list) who acquire them and will never sell them, thus depleting the market. Kai

29 years, 1 month

Collector Article

by FAIAZMC＠hsd.utc.com

Does anyone know where I can find equipment accessories for the PC8500 (NEC) laptop? Thanks! Mike ---------- From: Sam Ismail To: Discussion re-collecting of classic computers Subject: Re: Collector Article Date: Friday, June 20, 1997 3:36AM On Thu, 19 Jun 1997, Uncle Roger wrote: > At 03:31 PM 6/19/97 -0500, you wrote: > >prices listed for Apple equipment in "A Collector's Guide to Personal > >Computers and Pocket Calculators" are quite high, possibly since the book > > Apple II+ is quoted as $100-$200, the IIe $125-250. The Disk II is listed > as $75-150. Haddock's book is way high on some things, (seems) way low on > others, and, occassionally, is right on the money. Nonetheless, it *is* > interesting, has some nice pictures, and is probably a good reference to have. Gee, then I have an Apple bonanza worth $2000 in my garage. Whatever. This is what I am dreading of this hobby, that assholes like this Haddock guy start trying to price things out. Sam ----------------------------------------------------------------------- ---- ---- Computer Historian, Programmer, Musician, Philosopher, Athlete, Writer, Jackass

29 years, 1 month

Apple ][e software?

by BROBSTONA＠wartburg.edu

>> I managed to get DOS 3.3 by finding a game or something that ran on >> DOS 3.3, halting it with Control-C to get to the Applesoft BASIC >> prompt, then using the file commands such as INIT to make a new disk. >> I can't remember if DOS 3.3 has a built-in command that will copy a >> disk... There's probably a way to do it. > >It's not built-in, but the DOS 3.3 distributions have the Intbasic >program COPY which will do what you want. If you've got one of >these crippled II+'s or later that only have Applesoft, you can >still use COPYA. I'm wondering if there's a way to hack code to get it to copy without any System Master programs. I don't remember. I know the easy way out would be just to get the System Master, but now I'm just curious. :) -- Andy Brobston brobstona(a)wartburg.edu ***NEW URL BELOW*** http://www.wartburg.edu/people/docs/personalPages/BrobstonA/home.html My opinions do not necessarily reflect the opinions of Wartburg College as a whole.

29 years, 1 month

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