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:
Oct. 27, 2009
Filed:
Apr. 04, 2006
Dan Jeffrey Dickinson, Essex Junction, VT (US);
Robert D. Kenney, Austin, TX (US);
Christina Lynne Newman-labounty, Stowe, VT (US);
Ronald Gene Walther, Austin, TX (US);
Dan Jeffrey Dickinson, Essex Junction, VT (US);
Robert D. Kenney, Austin, TX (US);
Christina Lynne Newman-LaBounty, Stowe, VT (US);
Ronald Gene Walther, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer implemented method, data processing system, and computer usable code are provided for testing multi-core microprocessors. A test process initiates testing on communication bus interfaces associated with a set of processor cores on the multiprocessor in which the communication bus interfaces are disabled and wherein the testing uses a set of isolation test sequences to obtain results. The process identifies a set of functional processor cores in the set of processor cores based upon the results. The process also initiates a ramp logic built-in self-test to test a ramp associated with a functional processor core in the set of functional processor cores, wherein the ramp logic built-in self-test determines if the communication bus interface associated with functional processor core in the set of functional processor cores is functional.