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Switch the NC200 port to use VT52 emulation instead of ADM3a. #39

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Switch the NC200 port to use VT52 emulation instead of ADM3a. #39

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Commits on Sep 18, 2020

  1. Split up tty.lib into tty.lib (for the primitives) and adm3a.lib (for… 

    … the state

machine). Fix the nc200 port to actually use these rather than its home grown
version. Also, discover that dseg is dangerous; stop using it.
    @davidgiven
    davidgiven committed Sep 18, 2020
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  2. Merge from master.

    @davidgiven
    davidgiven committed Sep 18, 2020
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Commits on Sep 19, 2020

  1. Add the VT52 state machine and all the support machinery needed for i… 

    …t. Find a

fix a whole slew of bugs in the NC200 tty. There's no keyboard support yet.
    @davidgiven
    davidgiven committed Sep 19, 2020
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  2. Add support for generating VT52 cursor key sequences from the NC200 B… 

    …IOS.

libcuss can't handle them, though.
    @davidgiven
    davidgiven committed Sep 19, 2020
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  3. libcuss now knows about VT52 cursor keys... at the expense of no long… 

    …er being

8-bit safe.
    @davidgiven
    davidgiven committed Sep 19, 2020
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  4. Hack BBC Basic to use sort-of WordStar keys, because it can't handle … 

    …VT52

cursor keys.
    @davidgiven
    davidgiven committed Sep 19, 2020
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  5. Document NC200 change to VT52.

    @davidgiven
    davidgiven committed Sep 19, 2020
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  6. Fix Z8E to work with the NC200's VT52.

    @davidgiven
    davidgiven committed Sep 19, 2020
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Commits on Sep 20, 2020

  1. Treat the yellow key like a control key.

    @davidgiven
    davidgiven committed Sep 20, 2020
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  2. Marginally speed up the tty, but using eight-bit aligned font data ra… 

    …ther than

trying to pack it cleverly. Doesn't appear to make a noticeable difference in
real life, sadly.
    @davidgiven
    davidgiven committed Sep 20, 2020
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  3. Minor fixes and cycle shaving.

    @davidgiven
    davidgiven committed Sep 20, 2020
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