This is a port of GnuBoy for the PocketSprite

Needed to compile:

• an ESP32-compatible toolchain
• 8bkc-sdk ( + ESP-IDF, usually as a submodule)
• Host tools: ImageMagick (convert), xxd

How to compile:

• Run 'make' in this directory
• Rename build/gnuboy.bin to gnuboy.app
• Upload to 8Bit Key
• Run