DECENTRALIZED CONTROL SYSTEM IN MICROPROCESSOR

摘要

PROBLEM TO BE SOLVED: To provide a dispatch completion control mechanism which maintains a complicated control subordinate relation between instructions in a super-scalar processor without being assigned with cycle time in connection with a large serial queue structure. SOLUTION: Although global buses exist, none of the buses is limited in cycle (in general, most of the buses are latch-to-latch paths). The merit of this completion control mechanism is many tag bits related to each instruction stage. When viewed from the area reduction of lithography, however, the merit is small and a newer more powerful technology can be used.