Prefetching in a data processing system

摘要

A method and apparatus is provided for prefetching in a data processing system ( 10 ). The data processing system ( 10 ) has a bus master ( 14 ) and a memory controller ( 16 ) coupled to a bus ( 12 ). A memory ( 18 ) is coupled to the memory controller ( 16 ). In the data processing system ( 14 ) an address is driven onto the bus ( 12 ). Before the address is qualified, data corresponding to the address is prefetched. Prefetching the data before the address is qualified allows prefetches to be accomplished sooner.