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:
Aug. 06, 1991
Filed:
Mar. 02, 1990
Applicant:
Inventor:
Vineet Dujari, Santa Clara, CA (US);
Assignee:
Advanced Micro Devices, Inc., Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642383 ; 3642473 ;
Abstract
A system for transferring the status information between a peripheral controller and central processing unit (CPU) is disclosed. The system utilizes three registers and an interrupt pin for determination of the presence of a STATUS VALID bit. If the STATUS VALID bit is set, then a STATUS OVERFLOW bit is set by the peripheral controller. If the STATUS VALID bit is not set, the peripheral controller updates the status information and sets the STATUS VALID bit. Through the use of this transfer system much of the complexity associated with known systems is eliminated without the concomitant loss in processing speed.