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. 16, 2002
Filed:
Oct. 25, 1999
Gary R. Morrison, Austin, TX (US);
Kristen L. Mason, Austin, TX (US);
Frank C. Galloway, Dripping Springs, TX (US);
Charles E. Nuckolls, Austin, TX (US);
Jennifer L. McKeown, Austin, TX (US);
Jeffrey M. Polega, Austin, TX (US);
Donald L. Tietjen, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
Direct memory access controller (DMAC) ( ) adapted to directly execute C language style FOR tasks assigned by a processor ( ), where the FOR task includes a movement of a data element from a first location to a second location in memory. The DMAC includes multiple execution units (EUs) ( ), each to perform an arithmetic or logical operation, and a FOR task controller ( ) to perform the data movement. The FOR task controller selects the operation to be performed by the EU. In one embodiment, the FOR task is made up of C language type FOR loops, where descriptors identify the control and body of the loop. The descriptors identify the source of operands for an EU, and the source may be changed within a FOR task. A descriptor specifies a function code for an EU and may specify multiple sets of operands for the EU.