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
  • If you are starting a new thread choose a reasonable sub-forum to start your thread. (If you choose incorrectly don't worry, we can fix that.)
  • 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.
  • Do not bump threads.
  • Do not "necro-post" unless you are following up to a specific person on a specific thread. And even then, that person may have moved on. Just start a new thread for your related topic.
  • Use the Private Message system for posts that are targeted at a specific person.

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:
  • "PM Sent!": Do not tell the rest of us that you sent a PM ... the forum software will tell the other person that they have a PM waiting.
  • "How much is shipping to ....": This is a very specific and directed question that is not of interest to anybody else.

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
  • Use Google, books, or other definitive sources. There is a lot of information out there.
  • Don't make people guess at what you are trying to say; we are not mind readers. Be clear and concise.
  • Spelling and grammar are not rated, but they do make a post easier to read.
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Anyone hear of a Zeus 80 computer?

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    Anyone hear of a Zeus 80 computer?

    I was able to acquire a Zeus 80 computer. If I was to describe it in one word, I would use the word "heavy!". It's an all-in-one S-100 based computer with integral 12" monitor and dual 8" drives with a S-100 four or five slot S-100 card cage. I just got it so I'll blow some dust out of it before I take pictures and try it but it's a beast. And it's Canadian which probably explains why nobody has heard of it.

    Here's a pic from the brochure:

    Zeus 80 User.jpg

    I have the PDF brochure and documentation at

    I guess this didn't get too far out of Toronto or was this a rebranded computer of another brand?

    Any info is much appreciated.
    Maintainer of

    What's she doing? Cataloging disks?
    Be polite and I may let you live.


      I've never heard of it - and I'm Canadian and have been researching computer history for decades.

      Where do you find these relics, snuci? As I recall, you also have a super-rare IMSAI PCS 80.


        Oh wait, is this it here?

        (As a fellow Canadian, I'm sure you'll appreciate that I'm typing this on a Canadian-made IBM 3278 keyboard )


          That is the one. Picked it up yesterday with a couple of other items. I am going to go over it with a fine toothed comb on the weekend and try to power her up. I does have lots of software.

          I consider it a pretty cool find because it's Canadian. I am trying to find Canadian built computers specifically so I couldn't pass this one up. So far, I only have a Dynalogic Hyperion but I'd love to find some early equipment like an MCM/70 or anything else that was made here. Hopefully something lighter next time The brochure says 55 lbs. That is most definitely an understatement.
          Maintainer of


            I'm still looking for an early Burroughs ICON - made in Canada, specifically for the Ontario Ministry of Education:

            (being metal, it's pretty damn heavy too)

            Volker Craig terminals are made in Canada. IBM had a branch in Toronto, where they made all the beam spring and Displaywriter keyboards, possibly entire terminals. I vaguely recall a huge early green-screen wordprocessor also made in Canada.


              Hrmm.. I thought I had posted a reply but I must have not saved it.

              Mr.Amiga 500, I am particularly fond of Canadian equipment as well. I'd love to find an ICON although I'm not sure if I've seen one in person. I do remember the Telidon system that I played with in school but I don't remember the computer that it was on. It was probably an ICON. That was awesome and was one of the things that influenced me in moving to the computer field.

              At Seneca College, we used Volker Craig terminals but they were little used next to the DEC VT-320 terminals next to them. I also worked in IBM manufacturing at Don Mills and Eglington one summer assembling mainframe communication hubs of some sort. That location was later Celestica.

              My dream machine would be to find an older MCM/70 computer. Other than the Zeus 80, the only other Canadian computer I have is the Dynalogic Hyperion. That is a pretty slick machine too.
              Maintainer of


                In other news, I have been able to get the Zeus 80 fully operational after some clean up and redoing the keyboard. If anyone has any documentation on lubricating the Shugart 8" floppy drives, I'd love to see it. It's an interesting computer with an extra large MPU board (about 1.3 - 1.5 times the height of a normal S-100 card). The system came with 100+ 8" floppies to explore as well so that will be fun when I can get back to it.

                Here's a link to my post if anyone is interested:
                Maintainer of


                  There are maintenance manuals on the SA-800 drives on bitsavers.
                  Reach me: vcfblackhole _at_ protonmail dot com.


                    I've looked those over twice and can take them apart but they really don't mention lubrication points (I didn't expect they would). I'm just wondering if anyone has a recent write up on lubricating the drives. Still works great but it is a little noisy.
                    Maintainer of