Data transferring system with multiple port bus connecting the low speed data storage unit and the high speed data storage unit and the method for transferring data

摘要

A data processing system using a prefetch mechanism with high speed cache memory to increase the processing speed. Data is prefetched from a low speed main memory to the cache memory for data transfer instructions via multiple ports. For a program control transfer instruction, the prefetch mechanism prefetches instruction for each possible program path, stores them in the cache memory and continues with the prefetch processes.