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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I need some help doing an internal VGA upgrade on my hotrod PS/2 model 25-286

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    I need some help doing an internal VGA upgrade on my hotrod PS/2 model 25-286

    Alright guys, I have been working on my favorite nostalgic machine for a while now and finally have got the rare bits I needed to make it a more capable machine.

    After looking for a year for 4MB of special PS/2 RAM it finally popped up, and if you have a PS/2 model 25 or 30 I suggest you look on Ebay now because the seller has more.

    I also got the Kingston SX Now! 33Mhz CPU upgrade.

    Here are the results from a single benchmark of my upgrade:

    Stock PS/2 Model 25-286 10Mhz:
    Wolf 3D Benchmark FPS:

    PS/2 Model 25-286 w/ 33Mhz Kingston SX Now!
    Wolf 3D Benchmark FPS:

    As you can see I got about twice the original performance after the upgrade. I felt like the 256kb integrated VGA was holding it back so I threw in a 2MB ISA STB Nitro card I had pulled from a 486 I got from a thrift store and ran an external monitor. HOLY CRAP BETTER:

    PS/2 Model 25-286 w/33Mhz Kingston SX Now!
    Wolf 3D Benchmark FPS:

    As you can see the ISA VGA card really takes this system into overdrive. The CPU by itself took Wolf3d from a slideshow to "playable", but the VGA card makes it smooth, a responsive.

    I want to do a modification to my system like the one that evildragon did in this thread:

    basically wiring the PS/2 model 25's integrated monitor to the internal ISA card rather than the integrated VGA. I'm not sure if I can just do this with the card I have already without causing damage to my CRT. Unlike his monochrome monitor mine is color already. Do you guys think I should just try it and see what happens?

    @ $35 a simm? F*** that noise. 90% of the stuff that guy sells, is about a decimal place off in terms of price.

    To me, your asking the system to do too much. The charm of the 25 & 30 is the MCGA (and extension cga) games on proper slow hardware. If I was in your position, I'd look to building a 386 for the early vga games.

    As for the mod, I hate hard modding things. I would be more inclined to make an adapter cable. Cut up a standard vga cord, solder a 2x5 header on one end, and you dont run the chance of harming old hardware.
    It is a mistake to think you can solve any major problems just with potatoes.


      The charm of the 25 & 30 is the MCGA (and extension cga) games on proper slow hardware.
      My PS/2 is a Model 25-286, it's already got VGA graphics, but with only 256kb of vram.

      I could understand your point about building another system, but this is not about having any early 386. This is the same computer I had in Highschool in the mid 90's. I left mine someplace long ago and now having the most powerful version of my specific machine is what makes it fun for me.

      As for his prices: after scraping forums, overstock parts warehouses, and ebay a year for this to pop up literally anyplace I was fine with paying his price and being done with it.

      Anyway, Here is a screenshot of my TopBench results before and after the 2MB STB Nitro ISA card:

      As for the mod, I hate hard modding things. I would be more inclined to make an adapter cable. Cut up a standard vga cord, solder a 2x5 header on one end, and you dont run the chance of harming old hardware.
      That's my plan, my only concern is possible damage to the monitor due to incompatible frequencies.


        I don't know if the monitor will handle the signals. As long as you keep to 640x480 max, I cant imagine there being a problem. Worst case scenario, something pops and you need to replace some parts on a board.
        It is a mistake to think you can solve any major problems just with potatoes.