386 Additions To Protected Mode
With the release of the 386, the following additional features were added to protected mode:
- Paging
- 32-bit physical and virtual address space (The 32-bit physical address space is not present on the 80386SX, and other 386 processor variants which use the older 286 bus.)
- 32-bit segment offsets
- Ability to switch back to real mode without resetting
- Virtual 8086 mode
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—Henry David Thoreau (1817–1862)