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. 23, 2007
Filed:
Dec. 23, 2003
Justin S. Neils, Hudson, WI (US);
John S. Jensen, Minneapolis, MN (US);
Mitchell A. Bauman, Circle Pines, MN (US);
Eugene A. Rodi, Minneapolis, MN (US);
Bart E. Reigstad, Shoreview, MN (US);
Justin S. Neils, Hudson, WI (US);
John S. Jensen, Minneapolis, MN (US);
Mitchell A. Bauman, Circle Pines, MN (US);
Eugene A. Rodi, Minneapolis, MN (US);
Bart E. Reigstad, Shoreview, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A system and method for testing and/or initializing a Directory Store in a directory-based coherent memory. In one illustrative embodiment, the directory-based coherent memory includes a Main Store for storing a number of data entries, a Directory Store for storing the directory state for at least some of the data entries in the Main Store, and a next state block for determining a next directory state for a requested data entry in response to a memory request. To provide access to the Directory Store, and in one illustrative embodiment, a selector is provided for selecting either the next directory state value provided by the next state block or another predetermined value. The other predetermined value may be, for example, a fixed data pattern, a variable data pattern, a specified value, or any other value suitable for initializing and/or testing the Directory Store. The output of the selector may be written to the Directory Store.