In the high speed bus system of the present invention, the bus configuration is one in which all master devices are clustered at one end of an unterminated end of the bus. The slaves are located along the remaining length of the bus and the opposite end of the transmission line of the bus is terminated....http://www.google.com.hk/patents/US5355391?utm_source=gb-gplus-share專利 US5355391 - High speed bus system
