| 摘要 |
PURPOSE:To prevent access where a program exceeds the range of a given memory block in a system where data is transmitted and received between programs through the use of the memory block. CONSTITUTION:A memory block monitoring device 5 which is provided with a memory block monitoring table 6 is provided between CPU 1 and a memory 9. A virtual address received from CPU 1 is checked through the use of the memory block monitoring table 6 so that access to the outside of the range of the memory block is prevented. |
