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The Intel 80286 chip was used in the IBM AT computer, introduced in 1984. They are fine for DOS, although the clocking speeds are slow by modern standards. If you try to run Windows on a 286-based PC, it will run VERY slowly and only in Standard Mode (assuming you have 2 MB of RAM installed). The Virtual Memory capabilities of the 286 are very inefficient. Swapping is performed at segment level (using 64 KB chunks). The method of switching between Real Mode (used to access the first 1 MB of Conventional Memory) and Protected Mode (above 1 MB) is very cumbersome. As well as the slow clocking speed, the other main disadvantage of this chip is that, like the 8086 chip, the data and address lines are multiplexed (i.e. the same lines are used for addressing and data
Wiki User
∙ 11y ago
Wiki User
∙ 11y ago• 80286 is a 16 bit processor
• 80286 has a 16 bit data bus and separate 24 bit non-multiplexed address bus.
• 24 bit address bus allows the processor to access 16M bytes of physical memory
• 80286 in PVAM can address up to 8192 virtual memory segment of 64k bytes each.
The 80286 then has a virtual address space of 1 Gigabyte.
Wiki User
∙ 12y agomemory management and data protection capability
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