Memory control apparatus and method for controlling usage amounts for a plurality of cache memories

摘要

A memory control apparatus interposed between a central processing unit and a memory device to store data includes a channel control unit to control a data transfer to/from the central processing unit; a drive control unit to control a data transfer to/from the memory device; a plurality of cache memories to temporarily store data which is transferred between the central processing unit and the memory device; and a cache memory control unit having a selector for selecting a cache memory to store data which is transferred from the memory device. The memory control apparatus selects a cache memory to which data is to be stored so as to almost equalize usage of the plurality of cache memories, thereby controlling allocation of the cache memories and enabling a cache memory space to be effectively used.