Adapting a communication protocol is an important part of the humanoid control system. For the stable operation of humanoid robots, its many motors and sensors require fast feedback by high-speed communication. IEEE-1394, also known as FireWire, at over 100 Mbps, is one of the best choices for a faster field-bus in a real-time distributed robot control system. IEEE-1394 is a well-known protocol as a high-performance serial bus, which was first standardized by IEEE in 1995 [9]. IEEE-1394 is used primarily in multimedia devices and office automation. Moreover, IEEE-1394 has been applied to MAHRU as a communication protocol in a real-time distributed control system [10]. This robot needs to control a total of 35 motors. The high-data rate of IEEE-1394 provides enough time to control a number of motor controllers and to transmit mass data to a humanoid robot. In this control system, the transmission time is very short, under 100 μs, to send data to all humanoid motors. The realization of an IEEE-1394 real-time distributed control system and a motor controller for a humanoid robot are reported.