In memory addressing for Intel x86 computer architectures, segment descriptors are a part of the segmentation unit, used for translating a logical address to a linear address. Segment descriptors describe the memory segment referred to in the logical address. The segment descriptor (8 bytes long in 80286) contains the following fields:
- A segment base address
- The segment limit which specifies the segment size
- Access rights byte containing the protection mechanism information
- Control bits
- Tabak, Daniel. Advanced Microprocessors. McGraw Hill and Co.
- Hall, Douglas. Microprocessors and Interfacing. McGraw Hill Publications.
- Robert R. Collins (August 1998). "The Segment Descriptor Cache". Dr Dobb's Journal.
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