Variable speed controller

Details Variable speed controller Variable speed controller

1997-09-08

2000-04-04

Butler, Dennis M.

Electrical computers and digital processing systems: support

Clock, pulse, or timing signal generation or analysis

Multiple or variable intervals or frequencies

713600, G06F 108

Patent

active

060473819

ABSTRACT:
A variable speed controller is disclosed that is capable of processing selected commands at a faster-than-normal rate. The invention is useful in the context of x86-based microcomputers to speed up the execution of MASK-A20 and/or RESET-CPU commands that are normally carried out by an 8042-based controller. Execution time for these operations is improved, yet compatibility with existing peripherals and/or code is retained.

REFERENCES:
patent: 4893271 (1990-01-01), Davis et al.
patent: 5226122 (1993-07-01), Thayer et al.
patent: 5261082 (1993-11-01), Ito et al.
patent: 5319771 (1994-06-01), Takeda
patent: 5483659 (1996-01-01), Yamamura
patent: 5666522 (1997-09-01), Klein

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