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

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    My rarest bits are all TI related.

    1. TI Dimension 4 prototype (three known to survive, and one of those is just a board set without the case). These later morphed into the TI-99/4.
    2. Marinchip S-9900 computer (a TMS9900-based S-100 computer)
    3. TI-99/4 p-Code sidecar (only four known to survive)
    4. TI-99/2 computer.
    5. Both major variants of the TI-99/8.
    6. Cassette interface for Tomy Pyuuta Jr.
    7. TI CC-40 Video Interface (HexBus peripheral)
    8. Centronics Printer Interface for Tomy Pyuuta Mk II.

    After that, there are a lot of really HTF items for all of the systems I collect. . .in addition to the common stuff.
    Enter My Mind At Your Own Risk!

    Comment


      Originally posted by Ksarul View Post
      3. TI-99/4 p-Code sidecar (only four known to survive)
      Better make that at least five, unless you and I have communicated about this before . Sitting here looking one I picked up on eBay about 10 years ago. It wasn't all that expensive at the time (< $100) and I had no idea they were rare.

      Comment


        Originally posted by shirsch View Post
        Better make that at least five, unless you and I have communicated about this before . Sitting here looking one I picked up on eBay about 10 years ago. It wasn't all that expensive at the time (< $100) and I had no idea they were rare.
        Note that I'm speaking of the sidecar version--not the card for the PEB. And if you do have that sidecar type (joy, joy), I am glad another survives. Most of these ended up in schools and were scrapped when the TI computers were end-of-lifed, so their survival rate is significantly lower than that of the Video Controllers (sidecar or PEB versions) which ended up in schools and businesses.
        Enter My Mind At Your Own Risk!

        Comment


          Originally posted by Ksarul View Post
          Note that I'm speaking of the sidecar version--not the card for the PEB. And if you do have that sidecar type (joy, joy), I am glad another survives. Most of these ended up in schools and were scrapped when the TI computers were end-of-lifed, so their survival rate is significantly lower than that of the Video Controllers (sidecar or PEB versions) which ended up in schools and businesses.
          Ack - sorry. My bad. The unit I have is the expansion box cartridge! Didn't realize there was an actual side-car. I do have a speech side-car, but I suspect those are more common.

          Comment


            Ive got everything you are mentioning. Over 1000 new CPUs/ICs. Vintage and military spec. Even a few prototypes. I inherited everything and I want to find homes.

            Comment


              Originally posted by Comp View Post
              I’ve got everything you are mentioning. Over 1000 new CPUs/ICs. Vintage and military spec. Even a few prototypes. I inherited everything and I want to find homes.
              Who is 'you' in the "..you are mentioning"?

              Comment


                Originally posted by Comp View Post
                I’ve got everything you are mentioning. Over 1000 new CPUs/ICs. Vintage and military spec. Even a few prototypes. I inherited everything and I want to find homes.
                Are you speaking of chips, systems, or both?
                Enter My Mind At Your Own Risk!

                Comment


                  He made 4 posts so far and they all start with "I've got". Not sure what to think about this.

                  Comment


                    "I've got" a spam problem.
                    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
                    Various projects and oddities: http://oldvcr.blogspot.com/
                    Machine room: http://www.floodgap.com/etc/machines.html

                    Comment


                      Just found this forum so your community is a bit new for me.

                      Not sure how rare youd consider, but I have prototypes of Mac IIcx, IIsi, and LC. I have a lot of boxed software, some new sealed, which includes Apple System 5.0, AppleShare Server 1.0, 2.0. I also have the Apple Rhapsody developer release (original) for both x86 and PPC. I have install media for Apple A/UX 2.0 and 2.0.1. Desperately looking for other versions and documentation / full set.

                      Comment


                        How about a Durango F85?

                        Comment


                          As someone in my late 20's i'm a youngster, but i've kept my eye out for gems...

                          1. Rack hear panels from a PDP-15
                          2. Some random blinkenlight panel from a so far unknown Intel system from 1973
                          3. PDP-8 flip chips (wooo...)
                          4. PDP11/05 core memory plane
                          5. Early UNIBUS PDP-11 bootstrap card
                          5. RL02 Drive, and a couple disk packs
                          6. A pair of 3rd party BA11 boxes, one with a FALCON (T-11) PDP-11 system installed.
                          7. A pair of MicroPDP-11/23's, one rackmount, one pedestal, with complete plastic case.
                          8. One pedestal MicroPDP-11/53, boards shot, waiting conversion to PDP-11/73
                          9. BBC Micro Issue 3, in dire need of restoration
                          10. A Dragon 32, just because i've run out of interesting things to put on a list.

                          Comment


                            That Dragon 32 is definitely rarer than an issue 3 beeb

                            Comment


                              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
                              Mac IIFX with MicroExplorer

                              Comment


                                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.

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