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. 31, 2001
Filed:
Feb. 21, 1995
Applicant:
Inventors:
Jay D. Jeter, Allen, TX (US);
Ronald J. Landry, Allen, TX (US);
Assignee:
Nortel Networks Limited, , CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/126 ;
U.S. Cl.
CPC ...
G06F 1/126 ;
Abstract
A computer system for diagnosing and isolating faults in the computer system. A first value is written from the processor using the bus a first address within the address space of a diagnostic state machine. The value is latched in a first register and written from the first register to a second address in the memory. By reading a second value from the memory at second address, the processor compares the second value to the first value to indicate an error if they are different.