Open a ROM via File > Open ROM.

A boot rom is not provided, the state of the Game Boy after the boot rom finishes is emulated.

Serial (link cable) is emulated in so far that games that rely on it do work, though no emulation of actual linking between two Game Boys is implemented.

Supported Memory Bank Controllers:

• MBC0
• MBC1
• MBC2
• MBC3 (without RTC)
• MBC5

Controls may be customized via Options > Controls. For manual editing (not recommended, key order needs to be preserved), settings are stored here:

• Linux: /home/UserName/.local/share/Kevboy
• macOS: /Users/UserName/Library/Application Support/Kevboy
• Windows: C:\Users\UserName\AppData\Roaming\Kevboy

Some keys might not be supported.

File is an Unix Executable.
Open terminal and navigate to file location.
Type chmod +x kevboy_mac_x86