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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.


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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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Information about IBM 4865 PERSONAL COMPUTER 3.5" EXTERNAL DISKETTE DRIVES

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    Information about IBM 4865 PERSONAL COMPUTER 3.5" EXTERNAL DISKETTE DRIVES

    Good morning to all of you,

    in order to have a convenient but still authentic way to share data between my modern computer on the one hand and my vintage IBM 5150 or my IBM 5170 on the other, I decided to upgrade the vintage PC and the vintage PC/AT with external IBM 4865 3.5" diskette drives. I bought one in the variation for the PC and one in the variation for the PC/AT. According to the IBM press release found here:

    https://www-01.ibm.com/common/ssi/Sh...uest_locale=en

    the PC version of the 4865 Disk drive came with:
    - Power split cable
    - Cover plate (IBM Personal Computer)
    - Cover plate (IBM Personal Computer XT)
    - Expansion slot cover (IBM Portable Personal Computer)

    The AT Version of this drive came with:
    - Power split cable
    - External diskette drive adapter
    - Flat signal cable

    However, both drives that I got came with no supplements whatsoever. I only got the external diskette drive with permanently attached signal/power cable.

    In order to be able to do a more directed search on the missing parts, I am wondering whether anybody here has some of the missing parts like the cover plates, the external diskette drive adapter, the power split cables or the flat signal cabel and can share some photos, part numbers or any additional information that might help in finding these parts on ebay.

    Thanks a lot and best Regards

    Jens

    #2
    A picture of what you are looking for is shown in these two discussions:

    http://www.vcfed.org/forum/showthrea...card-do-I-need

    http://www.vcfed.org/forum/showthrea...drive-IBM-5160

    The power split cable designed to be installed inside the PC, along with the connector that mounts on the rear of the PC enclosure, is hard to find on its own and is almost always missing when these drives are sold on eBay. You will likely have to make one yourself.

    An alternative to using the original power split cable is described here:

    http://www.vcfed.org/forum/showthrea...rive-on-a-5160
    Last edited by hmb; May 30, 2020, 07:18 AM.

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      #3
      With regard to the "AT version" of this drive - you can find a picture of the "external diskette drive adapter" and its accompanying power split cable here:

      http://www.vcfed.org/forum/showthrea...-Adapter/page6

      The card was designed to "bridge" the internal floppy cable to the external DB37 connector.
      Last edited by hmb; May 30, 2020, 12:32 PM.

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        #4
        Hello Jens,

        Can not answer your private message since your box is full...

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