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8086 segmentation technology
2022-07-06 17:01:00 【My71】
- The maximum memory limit is determined by CPU The number of digits determines ,2 Bit CPU The maximum memory is 4B.8086 yes 16 It's a plane , Maximum memory 64 KB
- High order CPU You can install a low bit operating system .64 position CPU It can hold 32 Bit operating system .
Memory address segmentation technology
It's solved 16 position CPU visit 20 Bit address
Segment address and offset address are not unique
Physical address :20 position (5 Bit hex )
Segment address :16 position (4 Bit hex )
offset :16 position (4 Bit hex )
Physical address
- There are two ways to represent a physical address
- The result of the calculation is
- Segment address : offset
- Physical address by 20 Bit binary number means , Usually this 20 Bit binary number to 5 A hexadecimal number .
- Physical address = Segment address * 10H + offset
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