9216057db8
I implement the screen using XCB which is much more friendly than z80e's SDL+CMake for development machines that want to install minimal dependencies (for example, a port-less OpenBSD rig).
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TI-84+ emulator
This emulates a TI-84+ with its screen and keyboard. This is suitable for
running the ti84 recipe.
Build
You need xcb and pkg-config to build this. If you have them, run make.
You'll get a ti84 executable.
Usage
Launch the emulator with ./ti84 /path/to/rom (you can use the binary from the
ti84 recipe. Use the small one, not the one having been filled to 1MB).
This will show a window with the LCD screen's content on it. Most applications, upon boot, halt after initialization and stay halted until the ON key is pressed. The ON key is mapped to the tilde (~) key.
Press ESC to quit.
As for the rest of the mappings, they map at the key level. For example, the 'Y' key maps to '1' (which yields 'y' when in alpha mode). Therefore, '1' and 'Y' map to the same calculator key. Backspace maps to DEL.
Left Shift maps to 2nd. Left Ctrl maps to Alpha.