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.
See more
See less

Craigslist haul: 7x IBM PS/2 model 25 type 4 systems

  • Filter
  • Time
  • Show
Clear All
new posts

    Craigslist haul: 7x IBM PS/2 model 25 type 4 systems

    A while back someone posed 3 AT style cases on craigslist for free. I was too slow and didn't get them, I did however leave my name and number with the guy in case he ever got more. This was a good month ago. Well lo and behold I get a call in the morning and he has 3 more and 3 newer ones for free! YAY! I quite literally fly across Denver, and turn a 40 minute trip into a 20. The machines I got are basic beige Pentium class machines. 2 of the three had Cyrix chips (pr166 & 120). Nothing of any REAL value, except for the cases. For some reason AT style cases have really gotten scarce recently. But here is the best part! It turns out he had a SEVEN IBM model 25 Type 004 PS/2 machines in his shed. I got to take them for free also!!! The first picture is what I looked like when he said i could "just take them and get them out of my way"

    They are all COLOR 8086 machines! All seven have token-ring cards installed as well. I took a random machine, plugged it in and it came to life like the years it spent in a shed were nothing to it. I love the look of the IBM PS/2 series! This has COMPLETELY screwed up my weekend plans for "cleaning the garage." Because the space I cleaned up now has a pile of computers in it.

    I know for sure i'm going to completely "pimp out" one of these boxes. The rest... I don't know yet. The floppy drive doesn't seem to want to work on the random machine I picked up, i'm hoping its just dirty. The basic screen says 62940 bytes free. this seems VERY low, I'm under the impression they came stock with 640kb. Anyway, i'm off to scour the tubes of the Internets for a manual, and upgrade options.
    Last edited by luckybob; October 27, 2012, 07:25 PM. Reason: typos
    It is a mistake to think you can solve any major problems just with potatoes.

    IBM's ROM BASIC is limited to 64K of usable space, even if you have more RAM than that installed. You should see the actual memory count on the screen when the system is starting up.


      you are so lucky, I had to pay $67 dollars for two Type 65 PS/2's and one doesn't even have the case. Could you please take a group photo as it would look really cool. Model 25 were ther low end of the PS/2 series so they have ISA which is much more useful than MCA. The model 25 is so designed very much like a PS/1 2011 with the monitor built into the unit. Did you get any Model M keyboard or mice with the machines? They are worth quite a good amount these days.


        Those PS/2 floppy drives can be a real pain. Start out by cleaning the drive carriage rails. Sometimes that's enough to get the drive going.
        Reach me: vcfblackhole _at_ protonmail dot com.


          Originally posted by Chuck(G) View Post
          Those PS/2 floppy drives can be a real pain. Start out by cleaning the drive carriage rails. Sometimes that's enough to get the drive going.
          It's also pretty common for them to need to be recapped, those PS/2 720k drives have a penchant for dead/leaking caps.
          My Vintage computer/blog site
          Searching for a keyboard for a WYSEpc WY-1100.


            played with the #3 unit a bit more. Tore it down and rebuilt it. take about the GRIME. The insides of the floppy drive were not bad. I've seen better, but its something I'm going to have to scrub with soap and water later. UGG. The yellow floppy disk that was in it, was a dos 5.0 boot disk. It was nothing more than dos 5 & the token ring driver. There were errors on the disk. Which is natural of a 1.4mb disk formatted 720k. But I was able to boot with the image in my virtual pc.
            It is a mistake to think you can solve any major problems just with potatoes.


              Nice haul! Do be aware that there are the nasty soldered batteries located on some revisions of the PS/2 Model 25 - on the ISA riser card, no less! Snip it and put a button cell there.

              You can find alot of information about these systems at William Walsh's website.

              They're fun machines, and if you can locate a Sota 286i or 386i, you can use a plug-in ISA accelerator for them! Although the point would be moot if you could locate one of the hard-to-find Reply 486 upgrade boards for them. Talk about pimped out...

              Also, if you like the PS/2 AIO design, you might want to look into the IBM Eduquest series. It's not quite the same shape as the Model 25 systems, but it's certainly the older, more mature "brother"

              Have fun!
              Currently seeking:
              * Roland MPU-401/AT (with daughter card header)
              * Magitronic K-156 Keyboard (5pin DIN w/ XT-AT switch)
              I also collect PC and C64 Sierra On-Line software!