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Definition of "page table" |
A page table is the data structure used by a virtual memory system in a computer operating system to store the mapping between virtual addresses and physical addresses. Virtual addresses are those unique to the accessing process. Physical addresses are those unique to the hardware, i.e., RAM. / a mechanism for the translation of addresses from logical to physical in a processor equipped with virtual memory capability. Each row of the page table contains a reference to a logical block of addresses and a reference to a corresponding block of physical storage. Every memory reference is translated within the CPU before storage is accessed. The page table may itself be stored in standard memory or may be stored within a special type of memory known as associative memory. A page table stored in associative memory is known as a translation lookaside buffer. |
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