Boots – shoes – and leggings
Patent
1990-12-28
1993-10-19
Rudolph, Rebecca L.
Boots, shoes, and leggings
395700, 364DIG2, 364976, 3649761, 3649762, 3649763, 364978, 3649782, G06F 1202, G06F 940
Patent
active
052553795
ABSTRACT:
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.
REFERENCES:
patent: 4926322 (1990-05-01), Stimac et al.
patent: 4928237 (1990-05-01), Bealkowski et al.
patent: 4974159 (1990-11-01), Hargrave et al.
patent: 5027273 (1991-06-01), Letwin
patent: 5144551 (1992-09-01), Cepulis
Hayes, Frank, "Stretching DOS to the Limit", BYTE IBM Special Edition, vol. 14, No. 11, Fall 1989, pp. 79-84.
Turley, James L., Advanced 80386 Programming Techniques, Osborne McGraw-Hill 1988, Chapter 9, pp. 283-315.
Rudolph Rebecca L.
Sun Microsystems Inc.
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