Awesome

gba-bios

A Game Boy Advance replacement BIOS. Written completely in ARM assembly from scratch.

Boot Screen

Accuracy

This is mostly a fun project by two programmers, therefore high accuracy is a non-goal.
But we aim to make it compatible with most commercial games.

TODO

implement remaining BIOS calls (mainly sound functions)
handle attempts to read BIOS memory in all BIOS calls
test BIOS against more games / fix bugs