collapseos/recipes/ti84/README.md

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# TI-84+
**This is a work-in-progress, this is far from complete.**
## Recipe
This recipe gets the Collapse OS shell to run on the TI-84+, using its LCD
screen as output and its builtin keyboard as input.
## Build the ROM
Running `make` will result in `os.rom` being created.
## Emulate through z80e
[KnightOS][knightos] has a handy emulator, [z80e][z80e] for TI calculators and
it also emulates the screen. It is recommended to use this tool.
Once z80e is installed (build it with SDL support) and `os.rom` is created,
you can run the emulator with:
z80e-sdl -d TI84p --no-rom-check os.rom
You will start with a blank screen, it's normal, you haven't pressed the "ON"
key yet. This key is mapped to F12 in the emulator. Once you press it, the
Collapse OS prompt will appear.
**WIP: the keyboard does nothing else than halting the CPU for now.**
## Upload to the calculator
TODO