CHIP8 emulator in Go

This is a fairly basic CHIP8 emulator in Go, with the rendering handled by the pixel/pixelgl library.

usage: chip8 romfile

Thanks to:

• Cowgod's technical reference for providing a good overview of the CHIP8 architecture
• Jackson Sommerich' blogpost for accurate instruction timings

Known issues/future work:

• While most games work fine, there's some that aren't fully compatible yet
• Audio support