PythonExtra/README.md

PythonExtra - A community MicroPython for CASIO calculators

Original MicroPython README: README-MicroPython.md.

This is a MicroPython port for fx-CG 50, fx-9860G III and related CASIO calculators.

Build instructions

Requires the fxSDK. Go to ports/fxcg50 or ports/fx9860g3 and run make.

Most of the code is in ports/sh and is shared between the platforms.

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TODO list

Bugs to fix:

• Fix not world switching during filesystem accesses (very unstable)
• Fix console line spacing being hardcoded instead of using font data
• Fix the console not garbage collecting its lines (enable and test the feature)

Python features:

• Compare features with existing implementations and other brands
• Get filesystem access (open etc) with the POSIX interface
• Get a decent amount of RAM not just the fixed 32 kiB that's hardcoded so far
• Interrupt with AC/ON

UI:

• Shell escapes: move cursor, history
• Better input system in the shell
• Use JustUI to get a file browser (already available)
• Add an option for fixed-width font which also sets $COLUMNS properly so that MicroPython paginates (requires better getenv/setenv support in fxlib)
• Use unicode-fonts to provide Unicode support
  • Extend it with a fixed-width uf8x9 which maybe changes some glyphs (like i and l; the usual fixed-width unambiguous styles)
  • Try and provide a font smaller than 5x7 for more compact shell on mono
• A decent keymap that can input all relevant characters into the shell

Future wishes:

• Build for fx-9860G II (requires manual filesystem support)
• Lephe's secret ideas (complete previous list to unlock)