Family BASIC or Famicom BASIC is the dialect of the BASICprogramming language as a consumer product for programming Nintendo's Family Computer video game console. The cartridge was bundled with a computer style keyboard, and requires a cassette tape recorder to save programs that are created. Packaged with an instructional textbook and the Family Basic Keyboard, the software was released to consumers in Japan by Nintendo in cooperation with Hudson Soft and Sharp Corporation on June 21, 1984. A second version, with added memory, and features known as Family Basic V3, was released on February 21, 1985.
Several visual components seen in Nintendo games, such as backgrounds and characters from Mario and Donkey Kong games (circa 1984-1985), are made available as Family Basic development componentry, or have appeared in premade Family Basic games.
Family BASIC cannot normally be used on NES consoles because that console lacks the Famicom's 15-pin expansion port. This can be circumvented by the use of a custom I/O adapter that hooks into the otherwise unused NES Expansion Port on the bottom of the console.
Programs can be saved using the Famicom Data Recorder cassette tape drive. The Famicom Disk System cannot be used together with Family Basic because both the Disk System's RAM adapter and the Family Basic cartridge must be inserted into the main unit's cartridge slot for each respective peripheral to function.