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  1. Well, there are several important differences...

    Well, there are several important differences between what I've been collecting and the IBM PC.

    First, the IBM PC was designed to be affordable by ordinary people and was manufactured in huge...
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    These progress reports are inspiring! Please,...

    These progress reports are inspiring! Please, keep them coming!
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    Doubtful.

    Doubtful.
  4. Being annoyed is a function of your own internal...

    Being annoyed is a function of your own internal mental state and there's nothing anyone but you can do about that.

    As for the question being "rude", well that's subject to your personal...
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    Also, here is the HP Journal with the article on...

    Also, here is the HP Journal with the article on the keyboard on page 20 of this PDF:

    https://www.hpl.hp.com/hpjournal/pdfs/IssuePDFs/1975-06.pdf
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    Yeah, that one looks to be in good shape and (so...

    Yeah, that one looks to be in good shape and (so far) the price is very reasonable.
  7. I started by accumulating things in my basement. ...

    I started by accumulating things in my basement. Then I bought some fridge sized SGI machines and was storing those in a warehouse space rented by my friend. Then my friend rented a bigger...
  8. https://www.youtube.com/watch?v=1QM_AcLBSQM

    https://www.youtube.com/watch?v=1QM_AcLBSQM
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    IIRC, the clock is recovered from the signal...

    IIRC, the clock is recovered from the signal generated by the main unit. Section 4.4.6.3 Terminal Data Encoding in the VT100 technical manual says:


    Attached is the timing diagram.

    On the CPU...
  10. Any chance you could archive the media?

    Any chance you could archive the media?
  11. Where did you source the DEC style handles for...

    Where did you source the DEC style handles for the board?

    How did you rivet the handles to the board?
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    Agreed. Yes, the VT100USB keyboard hack...

    Agreed.



    Yes, the VT100<->USB keyboard hack lifted the discriminating circuitry from the VT100 schematic in order to handle the communication with the keyboard.

    See the External Links...
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    There's a VT100USB interface design out there...

    There's a VT100<->USB interface design out there for the keyboard. You could certainly do it via a microcontroller hack there.

    There's not much leftover room in the original VT100 ROM, but with...
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    The technical manual implies that a single pulse...

    The technical manual implies that a single pulse is what makes the keyclick "tick" noise and that a stream of pulses results in them averaging out (through the RC network) to a tone. I'm thinking...
  15. My motivation for asking is that I've been...

    My motivation for asking is that I've been wondering about making a modern AVO board for the VT100. The AVO is basically just a few components: RAM for the extra attribute bits, RAM for the extra...
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    This keyboard uses the hall effect as the sensing...

    This keyboard uses the hall effect as the sensing mechanism on the keys. This is a mechanism that is unlikely to fail due to age and is very reliable in the number of keystrokes before failure. So...
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    If you're driving back from VCF going east, ping...

    If you're driving back from VCF going east, ping me and I can show you around my warehouse in Salt Lake City.
  18. How common is a VT100 w/out the AVO add-on today?

    The base VT100 has the Advanced Video Option (AVO) as an add-on to give you the additional attributes (underline, blink, bold, in addition to reverse video), additional video RAM to support 132x24...
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    Oh very nice writeup. I've linked to that from...

    Oh very nice writeup. I've linked to that from the terminals wiki page for the VT100.
  20. Ah, that make ssense. The "1..." and "A..." must...

    Ah, that make ssense. The "1..." and "A..." must be the figures/letters switching keys.
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    I believe you could use any keyboard from the...

    I believe you could use any keyboard from the 264x series that has the tape drive keys on it.

    Lots of documentation linked from here: http://www.hpmuseum.net/display_item.php?hw=240

    Also see...
  22. Some sort of sewing machine work area light?

    Some sort of sewing machine work area light?
  23. Are you sure that's the right link? It's a still...

    Are you sure that's the right link? It's a still photo playing the First Man soundtrack.



    I've seen some on ebay and scraped pics here:...
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    I've used http://blockdiag.com/en/ for simple...

    I've used http://blockdiag.com/en/ for simple diagrams and found it pretty easy to work with.

    It's open source on github.
  25. The problem is that I don't know the supply chain...

    The problem is that I don't know the supply chain well enough to recognize the obscure parts at a glance. Maybe somebody like Will Donzelli has that knowledge, but not me.
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