| 摘要 |
PURPOSE: To provide an extremely fully versatile adapter system. CONSTITUTION: A function on the side of a device main body 3 is extended and operated even by the single body of the extension adapter 1. When a ROM cassette storing a different application software for not extending the function is' mounted to the extension adapter 1, the ROM cassette can be used as it is, the function of the device main body 3 can be extended by the extension adapter 1 when a dedicated ROM cassette for using function extension is mounted and thus, this extremely fully versatile adapter system is realized. |
