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Thread: HP 2649 B/C Terminals

  1. #1
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    Default HP 2649 B/C Terminals

    These are terminals that I purchased from a fellow user and collected in person during my Idaho road trip.
    There were two units. The first one is a 2649B which when opened is fully populated and fitted with an HP-IB option.
    The other is a 2649C which states it was specifically a graphics terminal. Unfortunately it had all its boards pulled and the safety glass took a good hit and broke plus the case plastics are trashed but it still has a good power supply, analog board, CRT and two salvageable tape drives. The only reason I grabbed it as well is in the hopes that I can trade it for a keyboard for the 2649B as neither came with a keyboard.
    In fact I cannot find any documentation or mention directly of the B/C models. I can find the A and D models only. Also holy crap there are a ton of models of this terminal that look identical.

    Anyone here ever heard of them specifically and moreso, is anyone willing part or all of the 2649C carcass for a keyboard?
    = Excellent space heater

  2. #2
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    Default

    If I counted correctly the last time I look a year or so ago, I currently have the following:
    (2x) 2640B
    (4x) 2645A
    (6x) 2645A with dual CTU
    (1x) 2647F with dual floppy (most interesting one, it runs BASIC locally)
    13 terminals total and only 7 keyboards.

    So I wouldn't need any more carcasses myself as I already have more terminals than keyboards.

    Looks like the main differences between any of the models of this terminal family is whether or not they have the built-in tape drives, and the particular set of CPU, video, memory, and I/O boards, and firmware that are installed. As you say there were a large number of permutations sold as different models.

    There is a large set of 264x terminal manuals here. I haven't looked through them to see if there is any information specific to the 2649 B/C models.
    http://www.hpmuseum.net/exhibit.php?hwdoc=240

  3. #3
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    Default

    It would of been great if that page had listed boards by their HP part numbers. You gotta open the PDF and hope the correct part number applies.

    Anyways, photos.
    CGS_7668.jpgCGS_7667.jpg

    Boards from left to right:

    Code:
    02640-60246 - Keyboard I/F
    GP ASYNC -  Data Comm
    **-60171 - Universal Memory PCA
    **-60088 - Display TMG
    **-60024 - Dsply Enh
    **-60124 - DMA
    **-60112 - Dsply Cntl
    **-60126 - Graphics Display PCA
    **-60125 - Graphics M-Controller
    **-60128 - HP-IB Interface
    **-60192 - Control Memory
    **-60209 - Processor
    **-60192 - Control Memory
    **-60137 - CTU I/F
    **-60032 - Read/Write
    It looks to be a complete computer in here. I am however heeding the warning for the similar model units and have not yet powered it in, though that still won't do much without a keyboard.


    Speaking of which, in order to get the other terminal home I had to dismantle it. The case was really beat up from someone trying to figure out how to pry it open before realizing there's a catch on either side. The machine broke down into two small bundles, the deflection yoke and the CRT which I packed in a custom carton. It's all still available if someone wants to trade.

    CGS_7669.jpg
    = Excellent space heater

  4. #4

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    I do have an extra 264x keyboard. I just need to check so I can get my 2640 and 2645 together. It will take a while. In case you can wait for me to get all together and test them. That little lid over the baud rate switch is of course missing though...

  5. #5
    Join Date
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    Default

    Eh, I'm not going to be picky. I can wait a while on this project.
    = Excellent space heater

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