Forum Rules and Etiquette

Our mission ...

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.

This forum has been around in this format for over 15 years. These rules and guidelines help us maintain a healthy and active community, and we moderate the forum to keep things on track. Please familiarize yourself with these rules and guidelines.

Rule 1: Remain civil and respectful

There are several hundred people who actively participate here. People come from all different backgrounds and will have different ways of seeing things. You will not agree with everything you read here. Back-and-forth discussions are fine but do not cross the line into rude or disrespectful behavior.

Conduct yourself as you would at any other place where people come together in person to discuss their hobby. If you wouldn't say something to somebody in person, then you probably should not be writing it here.

This should be obvious but, just in case: profanity, threats, slurs against any group (sexual, racial, gender, etc.) will not be tolerated.

Rule 2: Stay close to the original topic being discussed
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  • If you are responding to a thread, stay on topic - the original poster was trying to achieve something. You can always start a new thread instead of potentially "hijacking" an existing thread.

Rule 3: Contribute something meaningful

To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
  • This is not a chat room. If you are taking less than 30 seconds to make a post then you are probably doing something wrong. A post should be on topic, clear, and contribute something meaningful to the discussion. If people read your posts and feel that their time as been wasted, they will stop reading your posts. Worse yet, they will stop visiting and we'll lose their experience and contributions.
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Rule 4: "PM Sent!" messages (or, how to use the Private Message system)

This forum has a private message feature that we want people to use for messages that are not of general interest to other members.

In short, if you are going to reply to a thread and that reply is targeted to a specific individual and not of interest to anybody else (either now or in the future) then send a private message instead.

Here are some obvious examples of when you should not reply to a thread and use the PM system instead:
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Why do we have this policy? Sending a "PM Sent!" type message basically wastes everybody else's time by making them having to scroll past a post in a thread that looks to be updated, when the update is not meaningful. And the person you are sending the PM to will be notified by the forum software that they have a message waiting for them. Look up at the top near the right edge where it says 'Notifications' ... if you have a PM waiting, it will tell you there.

Rule 5: Copyright and other legal issues

We are here to discuss vintage computing, so discussing software, books, and other intellectual property that is on-topic is fine. We don't want people using these forums to discuss or enable copyright violations or other things that are against the law; whether you agree with the law or not is irrelevant. Do not use our resources for something that is legally or morally questionable.

Our discussions here generally fall under "fair use." Telling people how to pirate a software title is an example of something that is not allowable here.

Reporting problematic posts

If you see spam, a wildly off-topic post, or something abusive or illegal please report the thread by clicking on the "Report Post" icon. (It looks like an exclamation point in a triangle and it is available under every post.) This send a notification to all of the moderators, so somebody will see it and deal with it.

If you are unsure you may consider sending a private message to a moderator instead.

New user moderation

New users are directly moderated so that we can weed spammers out early. This means that for your first 10 posts you will have some delay before they are seen. We understand this can be disruptive to the flow of conversation and we try to keep up with our new user moderation duties to avoid undue inconvenience. Please do not make duplicate posts, extra posts to bump your post count, or ask the moderators to expedite this process; 10 moderated posts will go by quickly.

New users also have a smaller personal message inbox limit and are rate limited when sending PMs to other users.

Other suggestions
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FS: Unique IMSAI

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    FS: Unique IMSAI

    This IMSAI system is a good, working IMSAI with Front Panel, original IMSAI 8080 CPU board, and a clear plexiglass cover. I think it's pretty unique. And, it keeps the dust off of everything inside while still allowing one to see what's in there. Quite an advantage over never putting the cover on because you must be able to see the insides (like me), and also allows you to see whatever indicator LEDs your boards may have. I've never seen another like this. Somewhere, long ago, I heard that one of the west coast Computer Stores had these covers made for their display systems. I don't know if that's true or not.

    I acquired this system more than 15 years ago. It needed a bit of work to get it running. As you can see in the photos, back then the only replacement switch handles I could find matched pretty well in red, but unfortunately not at all in blue. However, the Front Panel is completely working with the few switch handles I purchased. I cannot remember which two the replacement red ones are. I've used this system with many S-100 boards, as I put together various bits to get a system running. Over the years, it has been my main test bed. Now that I recently completed my Altair 8800c, and since I also have a Northstar Horizon, I find that I am not using this system. Rather than continue to have it doing nothing, I would like it to go to someone who really wants an IMSAI, and will enjoy using it and showing it off to others, as I have in the past.

    The photos also try to show the mod made by the previous owner to be able to detach the AC power connection to the Front Panel. This is lamp cord with a plug and a socket. The only time I disturbed this is when I worked on the Front Panel in the beginning.

    I'm looking for at least $1500 (US) for the working chassis with Front Panel, original IMSAI 8080 CPU board, and plexiglass cover. If I am lucky enough to get more than one interested party, I will inform all parties of this, and I will consider the highest offer.

    I do not have the proper boxes or packing material to properly pack this system for shipment. I will be bringing it to a local FedEx to get it packed well. I will post back here about what the packing cost turns out to be. Then, of course, there will be the actual shipping cost on top of that.

    I do have some family commitments going on, so things might not move as quickly as you (or I) would like, but I will be as communicative as I can, and I will get things done as quickly as I can.

    Please ask whatever questions you have, and I'll do my best to answer them. If you have questions, perhaps they'd be best here in the thread, so others can benefit from the answers.

    IMG_1429.jpg IMG_1422.jpg
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    IMG_1418.jpg IMG_1426.jpg
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    I hope this is interesting to someone! If you've been looking to acquire a good working IMSAI (with the risk that things could change during shipping) this could be your chance. And I think it's a pretty unique one, too. Thanks for looking!


    "If you've been looking to acquire a good working IMSAI (with the risk that things could change during shipping) "

    They should not "change during shipping" if you spend the money to pack it correctly.


      Originally posted by Al Kossow View Post
      "If you've been looking to acquire a good working IMSAI (with the risk that things could change during shipping) "

      They should not "change during shipping" if you spend the money to pack it correctly.
      A big AMEN to that. The system is currently at FedEx, being professionally packed for shipment. They will be using InstaPack, so the computer will be nestled in a clamshell of form-fitted foam, after the front panel switches are protected by themselves. The cable to the front panel, as well as the IMSAI 8080 CPU board, are separately wrapped in anti-static bubble wrap inside the chassis cavity.

      Once I have the package, it will be pretty easy to determine the shipping cost options for whoever is interested.



        Well, now that my post has fallen off the first page, my analysis says that I was too optimistic about what I might achieve with this system.

        As an update, does this system interest anyone at $1200 plus shipping?

        Please remember that this system is a good solid working system that has been working for many years - it is not one that has had to be brought back to life. It should be a goos system for many years to come.

        Thanks for looking!



          After falling off the first page of listings for the second time, this IMSAI is now listed for auction on eBay:



            That is a really nice machine, and a very good price. I would jump all over it if I hadn't JUST bought a modern reproduction...


              Mine has just arrived in the UK. All safe and sound using the Ebay global shipping programme at a cost of $170 to the UK (plus a fortune to the UK government in import duties and taxes of course)

              I note your Ebay listing doesn't seem to include international shipping - is Ebay's shipping programme something you would consider to ship internationally ?


                Originally posted by rittwage View Post
                That is a really nice machine, and a very good price. I would jump all over it if I hadn't JUST bought a modern reproduction...
                Price seems a bit high if you compare it to this complete system

                Wish I could afford it, but I would be sleeping in the shed if I got it.
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