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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.

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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.


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To put things in engineering terms, we value a high signal to noise ratio. Coming here should not be a waste of time.
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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.

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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.


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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
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It's alive, my Datapoint 2200/1100 !

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    It's alive, my Datapoint 2200/1100 !

    Anf finally, after a few years in my possession, the machine has been restored to the point where it now enters the build-in debugger. I first had to read the Datapoint 5500 manual to understand how to enter the debugger. And now need to understand this debugger some more, existing documentation is rather shortcoming here.


    dp2200_dbg.jpg

    The debugger code lives in the bootrom, which is not present in the 2200, but is in the 1100. The 1100 bootboard sits in the slot occupied by the 2200 cassette reader PCB, and mimicks a booting casette. So if a DP2200 owner want to try this he will have to swap the RX board with a DP1100 boot board.

    Note : in this picture the innards of the machine have been swung into the "service" position, allowing access to the PCB's with the keyboard still in place. A pin on each side holds the unit in this position.

    Jos




    #2
    coolness.

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      #3
      Yes - great stuff!
      Torfinn

      Comment


        #4
        So next step is to boot using the floppydrives. Images (DOS.C) are available thank to Al, but does anyone have schematics for the DP9380 Quad floppy disk controller ?
        This are 2 big board full of TTL, around 250 of them.( 1973, so no single chip FDC controller...)

        Some mice mistook my boards for a lavatory, so there is bound to be damage..

        Comment


          #5
          Originally posted by jdreesen View Post
          So next step is to boot using the floppydrives. Images (DOS.C) are available thank to Al, but does anyone have schematics for the DP9380 Quad floppy disk controller ?
          This are 2 big board full of TTL, around 250 of them.( 1973, so no single chip FDC controller...)

          Some mice mistook my boards for a lavatory, so there is bound to be damage..
          the only place would be the musem in san antonio. i've not had much luck convincing Austin Roche to scan documents
          https://www.thestoryoftexas.com/disc...light-01-31-18

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            #6
            My other option for mass storage would be the Datapoint 9350 cartridge disk ( a rebadged Diablo 30 ) or the DP9360 cartridge disk .

            http://www.bitsavers.org/pdf/datapoi...Data_Sheet.pdf

            Anyone recognize the original disk manufacturer for the 9360 ? ( and what are my chances of finding one...)

            I have a suitable DP controller with a 4K-buffer. No schematics for this of course....

            Comment


              #7
              looks similar to the Wangco Series F or T

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