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:
Jan. 13, 2009
Filed:
Aug. 14, 2006
Mark A. Brandyberry, Austin, TX (US);
Lee H. Wilson, Austin, TX (US);
Mark A. Brandyberry, Austin, TX (US);
Lee H. Wilson, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Methods, apparatus, and products for processor fault isolation are disclosed that include sending, by an embedded system microcontroller to a programmable logic device ('PLD') a selection signal identifying one processor for boundary scan operations; sending boundary scan input signals to be sent to the identified processor; multiplexing by the PLD the boundary scan input signals to the identified processor; and sending boundary scan output signals returned from the identified processor. Methods, apparatus, and products for processor fault isolation are also disclosed that include connecting two or more processors in a boundary scan test chain, the connecting carried out by a PLD of a computer, the PLD further connected to sense lines carrying presence signals indicating whether processors are present in the computer; and including in the chain all processors indicated present according to presence signals.