For information on what this is and how it works, see: http://austinjadams.com/blog/autograding-gba-dma/. In short, it's an autograder for Gameboy Advance DMA, a concept which plays an important role in CS 2110 at Georgia Tech.
In this example assignment, students draw an image on the top-left corner of the screen. It's a simplification of Timed Lab 06 from Fall 2018, the assignment for which I wrote all this DMA stuff.
The grader/ directory contains the grader, which is the cool part (in
my opinion at least). The student/ directory contains the directory
where students can work and do local testing with a Gameboy emulator.
(Warning: it requires the CS 2110 GBA toolchain, which I will not
explain here.) The solution/ directory has the solution, which you can
copy to shared/ to test the solution in both the grader and the
student directory.