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@ -19,7 +19,7 @@
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; *** Code ***
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kbdInit:
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xor a
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ld a, 1 ; begin with A-Lock on
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ld (KBD_MODS), a
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ret
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@ -1,6 +1,6 @@
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# TI-84+
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**This is a work-in-progress, this is far from complete.**
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**This is a work-in-progress**
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## Recipe
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@ -25,7 +25,7 @@ You will start with a blank screen, it's normal, you haven't pressed the "ON"
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key yet. This key is mapped to F12 in the emulator. Once you press it, the
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Collapse OS prompt will appear.
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**WIP: the keyboard does nothing else than halting the CPU for now.**
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See z80e's `KEYBINDINGS.md` file for details.
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## Upload to the calculator
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@ -51,6 +51,29 @@ Press "1" to continue.
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When this is done, you can press the ON button to see Collapse OS' prompt!
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## Usage
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The shell works like a normal shell, but with very tight screen space.
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When pressing a "normal" key, it spits the symbol associated to it depending
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on the current mode. In normal mode, it spits the digit/symbol. In Alpha mode,
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it spits the letter. In Alpha+2nd, it spits the uppercase letter.
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Special keys are Alpha and 2nd. Pressing them toggles the associated mode.
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Alpha and 2nd mode don't persist for more than one character. After the
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character is spit, mode reset to normal.
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Pressing 2nd then Alpha will toggle the A-Lock mode, which is a persistent mode.
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The A-Lock mode makes Alpha enabled all the time. While A-Lock mode is enabled,
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you have to enable Alpha to spit a digit/symbol.
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Simultaneous keypresses have undefined behavior. One of the keys will be
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registered as pressed. Mode key don't work by simultaneously pressing them with
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a "normal" key. The presses must be sequential.
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Keys that aren't a digit, a letter, a symbol that is part of 7-bit ASCII or one
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of the two mode key have no effect.
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[knightos]: https://knightos.org/
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[z80e]: https://github.com/KnightOS/z80e
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[mktiupgrade]: https://github.com/KnightOS/mktiupgrade
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