The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 29, 1997
Filed:
Feb. 21, 1995
Applicant:
Inventors:
Jay D Jeter, Allen, TX (US);
Ronald J Landry, Allen, TX (US);
Patrick S Milligan, Plano, TX (US);
Gerry R Dubois, Lucas, TX (US);
Assignee:
Northern Telecom Limited, Montreal, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395872 ; 395450 ; 395469 ; 36424341 ; 3642384 ; 3642423 ; 3642592 ;
Abstract
A computer system for controlling the mode of operation of a data cache. When a DMA state machine detects a DMA cycle to a memory block, the machine interrupts the processor so the processor sets a new value of the DMA state to control the mode of cache operation associated with the block.