| 摘要 |
PURPOSE: A memory penetration prevention method under a CROS environment of PCS system is provided to implement a stable OS environment by accessing a user's corresponding region when a user accesses a memory during an operation of OS and preventing another user from damaging the contents of the region. CONSTITUTION: In the information table, there is a user block which acts as a loader in a CDMA system. The user block is capable of receiving a content needed for the system from an upper block and loading into a memory. A certain information with respect to the contents of the loaded memory is stored. In the case that when the contents of the memory is updated, the information of the table is updated. Namely, the information table is the table for judging whether the user properly accesses his region. In the memory range checking process, when the user access the memory, it is judged whether the user's region is properly accessed with reference to the information table. In the result processing process, the user checks whether the current processor is the parent processor. In the case of the parent processor, the routine is stopped. In the case of the child processor, the routine is stopped and is returned to the previous process.
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