05255379 is referenced by 149 patents and cites 5 patents.

A method for transitioning an Intel processor from virtual 8086 (V86) mode to protected mode operation which detects when a virtual V86 processor attempts to transition to protected mode, stores all of the information concerning the virtual processor at the time of the attempt to transition to protected mode, remaps the memory allotted to the virtual processor to the memory space used in running a process in real mode, sets up a dummy stack to provide for operation during a transition to protected mode, moves a process for transitioning to real memory space, shifts all of the register values to values for real memory space, and finally reactivates the transition to protected mode.

Title
Method for automatically transitioning from V86 mode to protected mode in a computer system using an Intel 80386 or 80486 processor
Application Number
7/636075
Publication Number
5255379
Application Date
December 28, 1990
Publication Date
October 19, 1993
Inventor
Michael D Melo
Billerica
MA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Sun Microsystems
CA, US
IPC
G06F 9/40
G06F 12/02
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