Bus access control in multiprocessor system - has unit that handles requests and determines distribution and order of handling

摘要

A multiprocessor system has a number of units designated as bus masters, together with a number designated as slave units. All units are connected to the system bus. The bus master units connect with a common main distribution logic units via bus interface control logic. Each bus master initiates a request for access to the bus and this is handled by the distribution logic unit. Requests are latched into registers coupled to logic that assigns the order of handling. ADVANTAGE - Reduced complexity and cost.