Exclusive memory region control system.

摘要

An exclusive memory region control system in a computer system has a CPU (5) and a main memory (1) including an exclusive memory region (2). The exclusive memory region (2) has a small control area (2-1) provided in the exclusive memory region (2) the main memory (1) and including data designating whether a software lock is applied to the exclusive memory region. The system comprises a hardware lock control unit (4) for performing a hardware lock of said small control area (2-1) by comparing an access address with a lock address and a software lock control unit (5-1) for reading the content of said small control area (2-1) without a hardware lock being applied to said small control area and for performing the software lock of the exclusive memory region by using register information in the CPU (5). <IMAGE>