Emulate the environment for running the games from the Game Boy Advance platform. Process the data and bind keyboard buttons to specific actions or responses typical for the portable devices of this type, check the Qt and SDL ports, manage saved data, etc.
Download of mGBA 0.10.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac application was originally produced by Jeffrey Pfau. The application relates to Games.
From the developer:
mGBA is an emulator for running Game Boy Advance games. The application features fast emulation, so that the games can run at full speed even on low-end hardware, such as netbooks. It provides Qt and SDL ports for a heavy-weight and a light-weight front-end.
You may want to check out more Mac applications, such as Mupen64, Joystick And Gamepad Tester or RaidManager, which might be similar to mGBA.