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Thread: DEC PDP 11/70 in Europe?

  1. #1

    Default DEC PDP 11/70 in Europe?

    Dear forum, over the recent months I have grown an interest on all things DEC PDP, so far my admiration surrounds the 11/70 and 11/73 systems, two machines very capable and far from each other in terms of technology integration (70s vs 80s).

    I'd like to get your advice as to what a minimum viable system is for both the 11/70 and 11/73 that can get you a functional system and perhaps go BSD UNIX. Also any ideas as to how to get hold of the rarer 11/70 these days?

    Look forward to your feedback.

  2. #2

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    Quote Originally Posted by edcross View Post
    Dear forum, over the recent months I have grown an interest on all things DEC PDP, so far my admiration surrounds the 11/70 and 11/73 systems, two machines very capable and far from each other in terms of technology integration (70s vs 80s).

    I'd like to get your advice as to what a minimum viable system is for both the 11/70 and 11/73 that can get you a functional system and perhaps go BSD UNIX. Also any ideas as to how to get hold of the rarer 11/70 these days?

    Look forward to your feedback.
    A real live PDP 11/70? Buy some lottery tickets and/or be in the right place at the right time as some upper management fool decides to trash their company's old system.

    Before I retired in 2014, in the North Dade Switching Control Center's space on the second floor of the Miami Shores building sat a PDP11/23 with an RX02 and an RL02. It had been sitting there since the SCC was closed in the late 1980's. If it is still there, it will likely be junked if and when AT&T decides it needs that space. But they, and most companies, simply have no procedures in place to move that stuff into the collectors' market. So rather than sell it, they'll pay a "recycler" to haul it off.
    Last edited by DDS; July 23rd, 2018 at 01:07 PM.
    "It's all bits on the bus, Cowboy! It's all bits on the bus!" -- Tom Beck, #1ESS Instructor, Southern Bell Opa Locka Training Center

  3. #3

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    I have a near complete Board Set, and search for an 11/70, complete or in parts for a longer time, but have not managed to find one by now.

    But with some luck and at this point >> space, transportation capabilities and money ... who knows.

  4. #4
    Join Date
    Jul 2009
    Location
    Boulder , Colorado USA
    Posts
    2,994

    Default

    Hi All;

    I have either most or all of the main 11/70 boards, which I got some years ago, and I have not seen any since..

    For my 11/45, for both comparison and for modifying my 11/45..

    And I have not seen an 11/70 in quite a while..

    THANK YOU Marty

  5. #5

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    An 11/73 with 1 MB of memory (at least 2 MB would be better), a QBUS ethernet, console serial port and SCSI controller with a disk is suitable for BSD 2.11.

  6. #6

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    Quote Originally Posted by cruff View Post
    An 11/73 with 1 MB of memory (at least 2 MB would be better), a QBUS ethernet, console serial port and SCSI controller with a disk is suitable for BSD 2.11.
    thanks!

  7. #7
    Join Date
    Nov 2018
    Location
    Bennekom, The Netherlands
    Posts
    13

    Default

    You mean something like this?
    Attached Images Attached Images

  8. #8

    Default

    Nice collection! If I remember it correctly, I should have a core stack for an 11/70 somewhere...
    It is a three hex board set, but not 100% sure if it's for the 11/70
    WTB: Dec TU56 / Case for Altair 8800

  9. #9

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    Quote Originally Posted by Ed Groenenberg View Post
    You mean something like this?
    Precisely

  10. #10
    Join Date
    Nov 2018
    Location
    Bennekom, The Netherlands
    Posts
    13

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    Quote Originally Posted by Roland Huisman View Post
    Nice collection! If I remember it correctly, I should have a core stack for an 11/70 somewhere...
    It is a three hex board set, but not 100% sure if it's for the 11/70
    The H217 or H224 could also be used in Unibus. Only the backplane would be different.

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