Forum Rules and Etiquette

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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

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Photos of my IMSAI PCS-80/30

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    Photos of my IMSAI PCS-80/30

    Hello all,

    I got my first PC out of storage over the holidays. It is an IMSAI
    PCS-80/30 that I bought in late 1977. Fired it up and everything works!
    Trying to figure out what to do with it. I'm, well lets just say 70
    something, and neither of my kids will ever want it. There is a computer
    museum here in Colorado, but from what I can determine it is not set up to
    display computer systems as yet. Don't really want to sell it on eBay.
    Here are some photos -- please ignore the temporary computer desk -- a piece
    of plywood resting on some chairs in my basement.

    It will boot and run Northstar Dos, CP/M, and the UCSD Pascal p-code system.
    For those who might be interested, here are the details.

    Ken Vaughn

    Hi! Wow! That's unusual! Very nice!

    Thanks and have a nice day!

    Andrew Lynch


      That's in great shape!! You've taken excellent care of it, it would look like! I'm sure no matter where it goes, it will make someone very VERY happy!!



        That's neat. I'm not an expert but I've never seen an IMSAI like that with the built-in monitor and no front panel. We have an auction site here if you wanted to post it there (there's no cost to post and no percent taken out of the sale or anything. It's just a free posting site for us to use and 100% of the transaction is yours). But that's only assuming you'd want to sell it and/or ship it.

        Beautiful system.

        - John
        Looking to acquire: IBM 5100, Altair 8800


          Thanks John, I will consider that. It is important to me that someone who would appreciate the system end up with it.

          The IMSAI PCS was a series of components, I don't know how successful it was. Here is a link to PDF file showing my original promotional material.

          Ken Vaughn
          Last edited by Ken Vaughn; January 28, 2010, 03:50 PM.


            I concur with the others who say this is a lovely looking system!

            My vintage collection:
            My vintage activities blog:
            Twitter: @classiccomputNZ ; YouTube Videos: (click here)


              What a gorgeous looking system - I'm jealous!


                You might also consider checking with the Computer History Museum in Mountain View. They may not have one yet and, if not, they may want it. . .
                The Vintage Computer and Gaming Marketplace
                The Vintage Computer


                  Hi! I'm not one to recommend sending classic/vintage computers to the museum (lets use them instead) but I think in this case its a good idea.

                  Yours is a truly beautiful system and should be preserved as is IMO.

                  Please consider.

                  Thanks and have a nice day!

                  Andrew Lynch


                    That is a wonderful system, and not a version of the IMSAI that I've seen before. Just the documentation is a valuable resource, especially since a lot of it has never been scanned for online preservation.
                    Enter My Mind At Your Own Risk!


                      Originally posted by Erik View Post
                      You might also consider checking with the Computer History Museum in Mountain View. They may not have one yet and, if not, they may want it. . .
                      I looked at their "want" and "don't want" lists. While they don't say specifically it looks like a "don't want". They include IMSAI 8080 and S-100 CPM Systems on the "don't want" list. The DigiBarn museum has a PCS-80/30 -- it was the system on which WordStar was developed. A preliminary search of other computer museums around the country shows 3 or 4 which list the IMSAI systems on their "want" lists, but all but one of those are in the collect and store mode. I would prefer that the system not just gather dust in a warehouse.

                      It would appear that to be really desirable, an IMSAI would have to have a front panel with all those toggle switches. If the IMSAI 8080 was a first generation Altair clone, then my system would be a second generation IMSAI (1977). The monitor program in ROM took the place of the toggle switches, and did a lot more as well. I built my system up by adding disk drives and memory to be a pretty robust software development system, which was my interest.


                        That is an incredible system. Very beautiful and very complete. If I had the money and you were willing to sell I would drive up there and pick it up personally. Whatever you do, don't trash it!
                        An equal opportunity collector.


                          Originally posted by Ksarul View Post
                          That is a wonderful system, and not a version of the IMSAI that I've seen before. Just the documentation is a valuable resource, especially since a lot of it has never been scanned for online preservation.
                          I have scanned many of the manuals (28 to be exact). See my recent post in the "Online Manuals Forum"
                          Last edited by Ken Vaughn; January 28, 2010, 03:40 PM.