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Common memory protection system in a multiprocessor configuration using semaphore-flags stored at complementary addresses for enabling access to the memory
Common memory protection system in a multiprocessor configuration using semaphore-flags stored at complementary addresses for enabling access to the memory
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机译:多处理器配置中的公共内存保护系统,使用存储在互补地址上的信号旗标来实现对内存的访问
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摘要
A common memory protection system in an apparatus having a multiprocessor configuration in which a plurality of CPUs are connected to a common RAM via a common bus, the system has a flag control section for outputting two semaphore-flag signals showing each semaphore-flag condition when the CPU checks two semaphore-flags by accessing the corresponding two semaphore-flag addresses that have complementary address values to each other, and a memory control section that allows the CPU to access any address in the common RAM via the common bus when receiving the semaphore-flag signals, both of which indicate that access to the common RAM is enabled, from the flag control section.
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