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Thread: Dec RK8E controller for RK05 wanted

  1. #1

    Question Dec RK8E controller for RK05 wanted

    Hi everyone,

    I'm looking for a Dec RK8E controller the the RK05 hard disk drive.
    Does anyone have one for sale? I don't mind if it's defective...

    Or is there a replica board set to build? Nowadays there are many replica
    projects so maybe someone had redesigned these board?

    Thanks in advance!
    Roland
    Wanted: case for Altair 8800 in good or bad shape or even a replica.

  2. #2

    Default

    Plessey also made an RK05 controller. Schematics here: https://www.pdp8.net/pdp8cgi/query_docs/view.pl?id=551
    Member of the Rhode Island Computer Museum
    http://www.ricomputermuseum.org

  3. Default

    The RK8E is on my wish list as well...

  4. #4

    Default

    Quote Originally Posted by m_thompson View Post
    Plessey also made an RK05 controller. Schematics here: https://www.pdp8.net/pdp8cgi/query_docs/view.pl?id=551
    Thanks, that looks great too. With a quick look it seems like
    there are only standard TTL components in that controller.

    It seems that Vince did a great job on the RK8E http://so-much-stuff.com/pdp8/flipchip/Mxxx.htm

    He made drawings of the M7104B, M7105B, M7106B in Eagle.
    I can ask if he actually made and tested these PCB's... Once I talked
    with Vince about the M847, he did draw that one too but never built it.
    So making those PCB's might bring you up into debugging hardware...

    And the problem with all these original DEC boards are the hard to get DEC ans SP chips.
    Wanted: case for Altair 8800 in good or bad shape or even a replica.

  5. #5
    Join Date
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    Default

    Quote Originally Posted by Roland Huisman View Post
    Thanks, that looks great too. With a quick look it seems like
    there are only standard TTL components in that controller.

    It seems that Vince did a great job on the RK8E http://so-much-stuff.com/pdp8/flipchip/Mxxx.htm

    He made drawings of the M7104B, M7105B, M7106B in Eagle.
    I can ask if he actually made and tested these PCB's... Once I talked
    with Vince about the M847, he did draw that one too but never built it.
    So making those PCB's might bring you up into debugging hardware...

    And the problem with all these original DEC boards are the hard to get DEC ans SP chips.
    Hmmm when I tried to go there I got this:Capture.JPG
    Code:
    Infected webpage detected
    now
    
    Feature:
    Web Protection
    
    This webpage http://so-much-stuff.com/pdp8/flipchip/Mxxx.htm is identified as infected with malware.
    The webpage has been successfully blocked by Antimalware filter and your PC is now safe.
    using BitDefender AntivirusPlus 2018. Don't know yet if it is really true or just a false positive ...

  6. #6

    Default

    It seems Bitdefender is the only one which gives an error there:
    https://www.virustotal.com/nl/url/30...is/1526753277/

    So probably a false positive...
    Wanted: case for Altair 8800 in good or bad shape or even a replica.

  7. #7

    Default

    Quote Originally Posted by m_thompson View Post
    Plessey also made an RK05 controller. Schematics here: https://www.pdp8.net/pdp8cgi/query_docs/view.pl?id=551
    I have the Plessey controller. I purchased it a few years ago. It's untested and currently in the U.S. Roland - if you are interested in it, just send me a PM.

  8. #8

    Default

    Great! PM sent!
    Wanted: case for Altair 8800 in good or bad shape or even a replica.

  9. #9

    Default

    Still searching for a RK05 controller... The board set from Mal is not a PDP8/e board set.
    Wanted: case for Altair 8800 in good or bad shape or even a replica.

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