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.

Date of Patent:
Jan. 14, 2003

Filed:

Oct. 01, 1999
Applicant:
Inventors:

Mark Buser, Pittsburgh, PA (US);

Gilbert Laurenti, Saint Paul de Vence, FR;

Ganesh M. Nandyal, Santa Clara, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 1/100 ;
U.S. Cl.
CPC ...
G06F 1/100 ;
Abstract

A processor ( ) is provided that is a programmable digital signal processor (DSP) with variable instruction length. A trace FIFO ( ) is provided for tracing a sequence of instruction addresses to assist with software or hardware debugging. In order to conserve space, only the addresses of an instruction just before (M+K, P+Q) and just after (P, R) a discontinuity are stored in the trace FIFO. A sequence of instruction lengths (SEC LPC) is also stored in the trace FIFO so that the sequence of instruction addresses can be reconstructed by interpolating between two discontinuity points (P to P+Q).


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