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. 29, 2013
Filed:
Sep. 13, 2010
Rodney E. Hooker, Austin, TX (US);
Colin Eddy, Austin, TX (US);
Darius D. Gaskins, Austin, TX (US);
Albert J. Loper, Jr., Austin, TX (US);
Rodney E. Hooker, Austin, TX (US);
Colin Eddy, Austin, TX (US);
Darius D. Gaskins, Austin, TX (US);
Albert J. Loper, Jr., Austin, TX (US);
VIA Technologies, Inc., New Taipei City, TW;
Abstract
A microprocessor is configured to communicate with other agents on a system bus and includes a cache memory and a bus interface unit coupled to the cache memory and to the system bus. The bus interface unit receives from another agent coupled to the system bus a transaction to read data from a memory address, determines whether the cache memory is holding the data at the memory address in an exclusive state (or a shared state in certain configurations), and asserts a hit-modified signal on the system bus and provides the data on the system bus to the other agent when the cache memory is holding the data at the memory address in an exclusive state. Thus, the delay of an access to the system memory by the other agent is avoided.