A number of intelligent bus interface units (100) are provided in a matrix of orthogonal lines interconnecting processor modules (110) and memory control unit (MCU) modules (112). The matrix is composed of processor buses (105) and corresponding control lines; and memory buses (107) with corresponding...http://www.google.de/patents/US4480307?utm_source=gb-gplus-sharePatent US4480307 - Interface for use between a memory and components of a module switching apparatus
