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X86 Modes

You have not seen madness until you have seen the DPMI

The x86 CPU's have a number of operating modes.

Real - 8086 - 1978

Protected - 286 - 1982

Virtual-8086 - 386 - 1986

System Management Mode - 386 - 1986


Long mode - x86-64 - 2003

Reference


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