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and adds memory paging. In these processors, the segment table, rather than pointing to a page table for the segment, contains the segment address in linear memory. When paging is enabled, addresses in linear memory are then mapped to physical addresses using a separate page table. Most operating systems did not use the segmentation capability, opting to keep the base address in all segment registers equal to 0 at all times and provide per-page memory protection and swapping using only paging. Some use

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