METHOD OF SEQUENCING OF BUS TRANSACTION IN MULTILAYER BUS SYSTEM AND COMPUTER SYSTEM

摘要

PURPOSE: To allow each processor of a multi-layered bus system to observe the sequence of a bus transaction unified in a system. CONSTITUTION: Each processor 21 and 22 on a local bus 20 records a bus transaction in each queue in a sequence to be executed, and executes it in the sequence. Those processors 21 and 22 echo the bus transaction on the local bus 20 to a central bus 10 by a bus interface 11, and then add it in their own queues. The sequence of the bus transaction in the queue of each processor 21 and 22 is unified based on the sequence of the bus transaction on the central bus 10.