Button Tester For All Gameboy models.

This project is public domain, and may be freely distributed.

FEATURES:

• Gameboy hardware detection between Classic Gameboy, Super Gameboy, Gameboy Color, and Gameboy Advance. The cartridge can intelligently detect the proper button test for the hardware it's being run on, seamlessly and transparent to the user.
• Endless button testing lets you test the buttons as long as you'd like!