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Memory Paging Definition |
The information in this document applies to:
WordPerfect® 5.1 for DOS
Problem
Solutions: Memory Paging: The transfer of program segments into and out of memory in a virtual memory environment. With the 80386 microprocessor, a page is a 4K-byte piece of memory. Pages are placed at locations, called page frames, whose addresses are 4K bytes apart. A data item that starts at one of these 4K multiple addresses is said to be "aligned on a page boundary." Only the first twenty bits of a 32-bit page address are significant; the last twelve are always zero. When virtual memory is in use, pages are swapped between disk and RAM as needed. The 4K-byte sections on disk that hold pages are called page slots. Memory paging can only be used in the protected mode of the 80286 and 80386 CPUs, never in real mode. Nearly all 80386 operating systems will do at least some memory paging. This definition was taken from the public domain program named PC-Glossary. |
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