| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a mechanism for interrupting cache access to an unauthorized address from a processor with little overhead to a time required for the cache access. Ž<P>SOLUTION: A cache memory controls access to the cache memory 120 from a plurality of application groups 100 and 101 having different address ranges where access is allowed, and interrupts access to an unauthorized address. An ID is respectively attached to the respective application groups, a tag field of the cache memory is expanded, and the ID is recorded when cache fill is performed. Access control is performed by comparing an expanded tag field with an ID of an application group of an access source upon hit determination. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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