The Game Boy Advance (GBA) is a video game handheld console made by Nintendo which was available from 2001 to 2010. It uses a 32-bit CPU. It is the successor of the previous Game Boy consoles and is able to play most Game Boy versions that came before. There are a number of GBA emulators. The one in this book is mGBA.
mGBA is a GBA emulator that aims to be more accurate than other GBA emulators, as well as providing a better feature set. It supports GBA games, as well as regular Game Boy and Game Boy Color games.