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. 27, 1999
Filed:
Sep. 18, 1997
Cang Ngoc Tran, Austin, TX (US);
James Allan Kahle, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method and system for input/output control in a multiprocessor system having multiprocessors coupled to a system memory via a common wide bus. The common wide bus is subdivided into multiple sub-buses which may be accessed individually or in groups by a selected processor, or individual sub-buses may be accessed by multiple processors simultaneously in response to one or more transfer requests. In response to a transfer request having a data address associated therewith, a particular target device is identified. The data address is then written into an address queue. Thereafter, one or more of the multiple sub-buses are utilized to transfer data to or from a single processor in response to a transfer request from a single processor. In response to a transfer request from multiple processors, one or more of the multiple sub-buses may be utilized separately to simultaneously transfer data to or from multiple processors.