Game Boy Advance playground

This repostiory is my sandbox for playing with GBA.
I'm doing it as much from scratch as I can because it is more intersting this way.
I'm also doing it in crystal for the same reason.

I am using this very cool guide TONC
and the GBA hardware specs from there: GBATEK. The startup file are mostly taken from there.

Dependencies

They should be available on every sane linux distro packages manager:

• make
• arm-none-eabi-gcc
• llvm
• crystal

You migh also want a GBA emulator, I use mgba.
As I write this, the rom work as expected in mgba but not in mgba-qt, which is weird.

Run shards to install crystal development dependencies.

Usage

Just make it.

Immediate TODO:

• Basic string display system
• Better assets handling
• Maybe: find a way to reduce clutter without section-gcing __crystal_main.

Credit

• Tiny 16- Basic by Lanea Zimmerman. CC-BY 3.0.
• 8x8 Font by Marcel Sondaar, Public domain