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.

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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Netronics ASCII keyboard and Video Board questions

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    Netronics ASCII keyboard and Video Board questions

    Apologies for cross-posting. I finally had my hands on this Netronics products ( got it for a fair price few years ago with Explorer/85). After re-soldering ( and IPA+cleaning) all points on the PCB and replacing caps, I got the the Video board working. I also re-did the solders ( and replace the ribbon cable and ic socket) on the ASCII keyboard to get it to work with the Video board. However, I have some puzzling questions about the keyboard. I re-checked all jumper settings according to the manual but...
    1. When typing, some keys shows the characters on the screen. However, it sometimes does not. Only when I hit this ?key ( installed by original owner) in combination with the ASCII key that I can make it show up in the screen. There is no explanation ( that I found why so) from any source yet.
    2. Repitious characters depending on how fast I hit the I have de-bounce problems.
    3. There is area for an extra chip +.. that was not mentioned in the manual nor shown in the schematic.

    Anyway... the ?key is on J6 ( normally open) and the unpopulated parts area is near P1 ( ribbon cable)
    Would anyone has a tip for me is much appreciated.
    Oops... I have to upload my pictures from my computer ( on Ipad right now).

    Last edited by RizThomas; October 9, 2020, 07:53 AM.

    I dug out the keyboard I've used with a Netronics terminal board thinking it was the same keyboard as what you were asking for info on. However, other than using a ribbon cable to the terminal is is completely different. Looking for a description or maker on it and discovered it is a Jameco JE610 ASCII keyboard dated 1979. So sorry, can't help out.
    Crazy old guy with a basement full of Pentium 1 laptops and parts


      It is possible that it is the strobe polarity.


        Curious Ö Netronics tended to use Stackpole switches, and I was just the other day trying to find documentation for their ELF II keyboard in the hope of getting the switch series name or part number, but I could not even find assembly instructions (maybe it always came pre-assembled).

        From what I can tell, you donít have Stackpole switches though. Possibly George Risk KBM AKA Futaba MD, from what little I can make out. The weird switch tacked on at the back looks like a European-made Clare high-profile reed (not the same as the Clare-Pendar version made in North America).

        And in case itís still broken: is there a link anywhere to the specific schematics of that model? The debounce time was sometimes controlled by a resistor and capacitor, wired into the encoder. And is the encoder chip the one that the schematics say it should be?


          I am working on the same Boards at the moment, but those are somewhat scrapped.
          So far missing components are back, But I mis the MK2709 Char ROM.
          Do you have an image or BIN,HEX-File of that ROM-U24?
          Would be great,



            Sorry for being late..just read my notification just now. I have the chip but needs to find a way to read it. I have to find its equivalent in 27xxx type.