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What are the top 10 rarest vintage computer bits you own?

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  • carlos12
    replied
    I place here my rarest items, in no particular order. Sorry if some of them are not that rare.

    1. IBM PS/2 Model 30 8086, bought in original state.

    Well, sure it's not that rare but I'm feel quite lucky I found, not too far from my home, a mint condition one, perfectly working, at a not-that-crazy-price. I also feel that the 8086 model is more difficult to find than the 286 one, not sure this is right.

    2. Premium PC II.

    This is a Turbo XT clone with a Siemens 8088 dual speed inside (4.77-10 mhz) and a dual graphic card (Herc + CGA? The computer came with an MDA type monitor, so now it works on Herc mode). It has a Zeta Ltd. BIOS from 1989 (first time I heard of) which looks to be 100% compatible with the IBM BIOS, as it ran every program I tried. I wasn't able to find any information of this system on the web so while the configuration is quite common and standard, with almost the same specifications as DTK Turbo XT and other clones, this concrete model and mark I think is quite rare.

    3. Octek-Oak VGA OTI 037c from 1989.

    Well, the OTI 037c is quite common, in fact I had a 1990 one bought in 1991, and it is not too difficult to find one on the web. But this is a quite early model, built by Octek.

    4. Programmer's guide to PC & PS/2 Video Systems, by Richard Wilton.

    This time, a book. The 1987 edition. It still can be found on Ebay and others but there aren't that many physical copies available... I think this is considered as the "bible" of 1980's IBM and compatibles video systems. Very revealing and useful. While Abrash's books are more detailed regarding VGA, this book is the one for treating earlier video cards.

    5. Programmation des cartes graphiques CGA, EGA, VGA, François Gervais.

    This book has being with me more than 30 years. I think it's quite rare, not many copies were produced at the time, and there are not many available on the web. It's not bad but it's quite simple comparing it with the superbly detailed and useful Wilton's one. I'd wish I had Wilton's book instead of this at that time...

    Leave a comment:


  • telemonster
    replied
    Hmmm

    Cray J932SE Supercomputer
    Sun Voyager (I need the carrying bag!)
    Seattle Computer Products 8086 S100 boards (2 of the 3 or 4 needed)
    Gravis Ultrasound 1.0 / Sound Blaster 1.0
    Yamaha C1 laptop that works
    Atari TT030
    Amiga 4000T
    BeBox 66mhz incomplete
    IMSAI 8080
    Atari STacy

    Leave a comment:


  • wperko
    replied
    Hi, I have original 1975 Altair 8800 kit documentation including build manual, operations manual, original parts lists, original cassettes for 4K and 8K BASIC as well as StarTrek and a lot of other stuff from when I built my Altair 8800 kit.


    Find pictures on my website;
    http://www.brainless.org/MultiMedia/...r/DocumentBin/

    I also have an original 1975 Motorola MEK6800D1 Kit I built and only ever tested one time back in 1975; https://www.brainless.org/4Sale/MEK6800D1/

    Now I'd like to trade some of this for a good working original 1975 Altair 8800 computer ...

    Leave a comment:


  • lysinger
    replied
    My rarest items:
    Heathkit EC-1
    IBM 3270 AT
    IBM 5150 REVA with Version 2 bios
    IBM 5150 REVA with Version 1 bios
    Jacquard Loom punch cards

    Leave a comment:


  • tipc
    replied
    Haven't powered them in years. Couldn't tell you. I just cringe to think I nearly gave ~1/2 dozen away years ago.

    And I won't be powering them again using the stock power supplies. Not until I can load test and verify their integrity.

    Leave a comment:


  • falter
    replied
    Originally posted by tipc View Post
    How could I forget. I have 2 Mindsets, one beaten to snot. Neither work lol.

    I also have a Tecmar 5161 clone, in horrible shape. Jafir reminded me.
    Do they power up to a black or solid colour screen? That's what both of mine do.

    Leave a comment:


  • tipc
    replied
    Originally posted by Weiveismart View Post
    How about a Durango F85?
    is that a "Poppy"? If so you'd better erase that post before Chuck G.finds out.

    Leave a comment:


  • tipc
    replied
    How could I forget. I have 2 Mindsets, one beaten to snot. Neither work lol.

    I also have a Tecmar 5161 clone, in horrible shape. Jafir reminded me.

    Leave a comment:


  • jafir
    replied
    I don’t think I’ve got anything that’s super rare. And I’m not really sure I want anything that so rare I’d be upset if it broke and I couldn’t get parts for it.

    I’ve got a couple of IBM 5161, but no cables or extender cards, just the receivers.
    I’ve also got the lid for a Compaq Deskpro 386, but it’s not the correct computer underneath

    Leave a comment:


  • tipc
    replied
    Northstar Dimension
    Canon AS-100 color
    Canon AS-100 mono
    IBM PGC card and inoperative 5175 monitor
    Vermont Microsystems PGC clone, 80188 based
    Ampro LittleBoard/PC, V40 based
    AMT AMTjr/ATjr, Sony V20 (clone) based
    Intel 300/? Multibus chassis, no cards
    Number9 Revolution video card, kind of a dog
    Tandy 3000HD, come on you know they're uncommon
    NEC APC III, most of the available add-ons
    Texas Instruments Portable Professional, color

    That's 12. I think that comprises most of what would likely considered rare. I also have a Lisa. And a Canon VP-3000. That's 14.

    Leave a comment:


  • RadRacer203
    replied
    Currently my rarest pieces are:
    Zaisan ES3 computer
    IBM 5161 expansion unit
    Worm drive in my PS/2 model 60
    Macintosh Portable pre-production demo unit
    Apple Lisa 2/10
    GE Fanuc Workmaster 1
    ALR 6x6/Unisys Aquanta HS/6
    IBM Eduquest Forty
    Mint boxed revision A IBM 5150 with everything
    NOS Microsoft Softcard

    Leave a comment:


  • Culbrelai
    replied
    Not too rare but I’ve got

    A Gravis ultrasound max 2.1
    A NEC CDR-80 with it’s matching 8 bit ISA card
    A Nakamichi MJ 4.8s? Cd changer. 4 disc version seems significantly more rare than 5 disc.
    And my baby, an IBM PS/2 Model 95/A

    Leave a comment:


  • Mad-Mike
    replied
    Currently....nothing super rare but this is my collection in order of rarity.....be ready for LOTS of NEC......

    1.) Creeping Net 486 - only one like it out there, closest match is DaveJustDave's on Youtube, we have the same case and are both 486s
    2.) GEM Computer Products 286 - GEM Computer Products stuff is hard to get since most of it went to US Military installations
    3.) NEC Versa M/75 w/ Touch Screen - a convertible tablet/Laptop combo from 1994 with bare finger touch AND Pen support (restoring that screen currently)
    4.) NEC Versa P/75 - The last version of the PC-4xx Versa which had a Pentium 75 and SoundBlaster sound, and a WORKING Battery
    5.) NEC Ultralite Versa - it's in pieces, has the original "Brick" power adapter, I'm restoring it, these early ones are less common than the above
    6.) NES Versa 40EC - Seems the E-series was the most popular of the Versa laptops early on, Caterpillar, Ford, and Microsoft had them for deployment
    7.) NEC Ready 9522 - I still see a few on e-bay every year, mine's a Pentium 100 model, the P/75 eats it for lunch though so I use the P/75 more
    8.) NEC Versa V/50 - I just got this, I know one other YouTuber with one, Beige-O-Vision, his is a rarer DTSN model, mine's Active Matrix, seen 4 on the bay
    9.) Tandy 1000A - despite the high prices everyone has one of these and they're all over E-bay, Clint from LGR, 8-bit Guy, Me, not sure why they're $100+
    10.) Apple Macintosh SE FDHD - Commoon, I see these all over E-bay, model M5011, that's why it's #10, more common than the Tandy

    But the rarest item I own is actually a piece of medical technology known as a Words+ System 2000 Commpac - it's an AAC (Augmentative Adaptive Communications) device from the company that started with an Auburn University Professor who also worked with Stephen Hawking to develop his speech synthesizer (for all I know Hawking used this actual model in the 90's). It connects to the serial and parallel ports of a computer and uses various pieces of software such as "Talking Screen" or "EZ Keys" to commuincate (which I have them backed up off the M/75's original hard drive and now have them on a newer 80GB drive). This thing looks like it was a prototype - the casing is epoxied together out of black haircell ABS plastic, parts of it look like a custom-mod job to velcro it to the NEC Versa M/75 it was attached to, it had a modified Socket I/O Serial card on it (which I removed and now it uses the Versa Dock directly, and far more reliably I might add). All I have is the unit though, I took out the rotted battery, wired it up for a 9V AC adaptor, no switches, no IR proximity/movement sensors, just straight up keyboard input for now. It's actually come in handy as a musician to record computer voices with Auto Tune and it sounds really cool or really funny depending on what the musical scenario calls for.
    Last edited by Mad-Mike; February 11, 2021, 09:41 AM.

    Leave a comment:


  • michaelsw
    replied
    I still have below..

    1. Apple II rev 0
    2. Mac IIFX with Microexplorer LISP card
    3. Olivetti Programma 101
    4. HP 2116B
    5. PC's limited Turbo PC
    6. Nextcube turbo dimension
    7. Altair 8800
    8. IMSAI 8080
    9. Apple IIc preproduction
    10. Early Apple IIGS developer unit with Turbo-28 ROM

    Leave a comment:


  • drdanj
    replied
    That Dragon 32 is definitely rarer than an issue 3 beeb

    Leave a comment:

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