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Recent content by joev

  1. J

    Why is the RX50 how it is?

    Sounds like a case of the business people wanting to grab more money by forcing customers to buy their disks, but the engineering people knowing that people are going to want to do this on their own anyway.
  2. J

    Southwest 8Ch paper tape punch/ reader

    I've been casually looking for one of these to pop up for years now- they rarely become available. Good luck, @Kayo!
  3. J

    Houston Computer Museum liquidation July 24th

    Found this just now: https://www.facebook.com/marketplace...8156389355802/ The pictures show a lot of Apple gear, a stack of what look to be VT240 and VT525 terminals Everything looks in pretty rough shape, though.
  4. J

    A "demo" running directly on a 1571 floppy drive.

    This made the rounds earlier this week; a demo with video and sound, running on a disconnected 1571 drive. https://www.youtube.com/watch?v=zprSxCMlECA http://www.quiss.org/freespin/
  5. J

    Building a Franken-PDP-11 out of parts?

    One day, I'd love to have a real, small PDP-11 to bang on, like an 11/05, 11/53, or LSI-11. Starting with something like this (a Mentec QBUS CPU) or this (M8191 CPU from a /23), would I "just" need a QBus backplane, power supply, some sort of QBus storage controller, and cables?
  6. J

    PDP-11: High-speed paper tape reader

    I'm playing around with SimH, simulating a small PDP-11 system with a high-speed paper tape reader, and I have a question about how the real hardware worked. Real paper tapes have a blank leader section for a few inches so the operator can mount the tape and pull a few inches through, so it...
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