Method and apparatus for switching address generation modes in C

Details Method and apparatus for switching address generation modes in C Method and apparatus for switching address generation modes in C

1993-02-08

1995-04-04

Eng, David Y.

Boots, shoes, and leggings

3649462, 3642624, G06F 906

Patent

active

054044715

ABSTRACT:
A data processing system has a microprocessor that is operable in real and protected address generation modes. Transition from the real mode to the protected mode is done by initializing system tables and pointer registers, switching from the real mode to the protected mode, and flushing a prefetch queue before executing further instructions in the protected mode. The transition also includes flushing instructions from the prefetch queue, immediately after the initializing, and executing at least one instruction while prefetching additional instructions that are executed to complete the transition.

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patent: 5168557 (1992-12-01), Shibuya
patent: 5265237 (1993-11-01), Tobias

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