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Joerg Hoppe's latest activity

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    Joerg Hoppe replied to the thread PDP-11 Diode ROM.
    Megacool ... I feel like a copycat now! What secrets may be hidden in this huge box?
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    Joerg Hoppe replied to the thread PDP-11 Diode ROM.
    It's only a prototype, no PCBs left. Not sure where to go now ... is there public interest in a DIY kit?
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    Joerg Hoppe replied to the thread PDP-11 Diode ROM.
    FYI, here the schematics:
  • J
    Joerg Hoppe replied to the thread PDP-11 Diode ROM.
    On the BM792, DEC used the 74138 instead of '154. Perhaps its easier to make a PCB layout with the smaller '138s?
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    Joerg Hoppe posted the thread PDP-11 Diode ROM in DEC.
    Guys, Starting 2024 fun! Something new&nerdy here: https://www.retrocmp.com/projects/diode-rom-book A video showing operation will...
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    Joerg Hoppe replied to the thread TK50 emulator.
    Josh Dersch made the QUniBone MSCP driver ... eternal thanks again! He planned for an TMSCP too ... but this seems to be more difficult...
  • J
    Joerg Hoppe replied to the thread QProbe 2023.
    QProbe2023 drives BRPLY, BHALT, BDCOK and BEVENT, but generation of 60Hz on LTC would need a small CPLD code change. Joerg
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    Joerg Hoppe replied to the thread QProbe 2023.
    Meant: "Joomla 3.x to 5.x"
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    Joerg Hoppe replied to the thread QProbe 2023.
    My flipchipshop.com died while migrating from Joomla 5.x to 5.x ... bit rot (hate this) So its still informal email, as usual. Joerg
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    Joerg Hoppe replied to the thread QProbe 2023.
    Guys, finally, finally I'm able to deliver enough QProbe2023s. Maybe I lost some preorders, please contact me again, if necessary...
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