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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COSMAC ELF-II with VIP preproduction chip, by netronics

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  • atg
    Originally posted by Andrews2010inc View Post
    The original cat was only $100, so what's the other remaining $900 of value.?
    Well it's assembled, so that would have been $150. Which in 1977 would be the equivalent of roughly $700 today.

    Leave a comment:

  • bifo86
    also i do apologize for the first asking price, that was preposterous and it was a matter of the 'you need to get it out' and 'i know but it means something to me'

    it's like selling a fixer-upper car, it's a fantastic machine, but you're mostly on your own except for the vast RCA community. I tried to buy matching card slot parts, but they didn't match. Meanwhile a few other soldering projects didn't seem to work so I don't trust myself with something this glorious.

    Leave a comment:

  • bifo86
    Originally posted by Andrews2010inc View Post
    The original cat was only $100, so what's the other remaining $900 of value.?
    extreme rarity. a pontiac GTO cost 4300 off the lot in the day. there were a few hundred of these made, and very few had the test chips.

    honestly the price is negotiable, throw me an offer. I would prefer to have it in the hands of someone here, but times are what they are.

    a couple hundred bucks in my pocket and the knowledge that I've put it into good hands is what I am asking.

    Leave a comment:

  • Andrews2010inc
    The original cat was only $100, so what's the other remaining $900 of value.?

    Leave a comment:

  • bifo86
    started a topic COSMAC ELF-II with VIP preproduction chip, by netronics

    COSMAC ELF-II with VIP preproduction chip, by netronics

    I purchased this via craigslist last year with the intent of repairing it or donating it to one of the usual museums, but life happens and I'm in need of money, so I'd like to sell this for whatever price seems fair based on the market to the community. The person I bought it from was the original owner as far as I know. It sat in his attic, untouched, for probably the best part of 40 years, when he built it as an electrical engineering student. I will say that he claimed to have plugged it in and turned it on and claimed that it was functional, but that seems completely impossible because at least one of the big capacitors got so dried out that one wire connecting it to the board came out. He encouraged me to plug it in and try it out and I think the 'are you insane' look I gave him was a little bit of a surprise, but he didn't mean any harm, and maybe it did work. I have not attempted to power it on, it comes with the original power supply.

    It includes the original 1802D chip as well as the VIP chip. The orignal solder joins are questionable due to age, but seem solid. This system will need to have the capacitors replaced, but most chips are socketed and there is no indication of damage at all. The original wood stand wings are present and in good shape, and it includes ALL original documentation (to my knowledge). Which means the Netronics docs, the hand drawn circuit diagrams, and the RCA spec sheets. It is astonishingly complete.

    My asking price is probably a little high for what you're getting, which is a project and not a functioning computer. Consider it a starting price and I've got no problem negotiating with anyone, I know my floor, and I'm not going to put this on ebay unless it's impossible to reach that floor here because this thing needs to go to someone in the community. I'm asking high because I need the money, I apologize for that, but that's the situation I'm in. I'm willing to field any questions, and I will eventually put it on ebay if I can't come to terms on here to basically open up bids.

    I'm asking $1000 based on rarity and completeness. I am willing to negotiate, so consider that a starting point. If you think it's too high, I understand, but I'm only selling due to need.