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:
Dec. 31, 1996
Filed:
Oct. 28, 1994
Brian R Bennett, Laguna Niguel, CA (US);
AST Research, Inc., Irvine, CA (US);
Abstract
A multiprocessor information processing system has a system bus with interleaved memory modules in communication with multiple CPUs. The multiprocessor system includes a subsystem monitoring circuit which monitors the addresses requested by the local CPU. If the local CPU addresses a memory module which is different from the last accessed memory module, then the subsystem monitoring circuit initiates a request to maintain control of the system bus. In this manner, sequential write and read operations are typically made to interleaved memory modules so that the effects of module recovery time are minimized. The subsystem monitoring circuit includes a transfer count register which indicates how many data transfer cycles can be run in succession before the local CPU has to relinquish control of the system bus. In this manner, fair arbitration is assured for other CPUs contending for control of the system bus.