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:
Nov. 23, 1993
Filed:
Apr. 17, 1992
Applicant:
Inventors:
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
395325 ; 395725 ; 3408255 ; 370 852 ; 3642412 ; 3642414 ; 3642426 ; 3642428 ; 364240 ; 3642401 ; 3642415 ; 364D / ;
Abstract
In a tightly coupled multiprocessor system, I/O interrupts are distributed to respective processors in accordance with load conditions of the processors without partiality to any one processor. Interrupt arbitration circuits provided in respective processors receive an interrupt request from an I/O device, effect interrupt arbitration using a parameter indicating the load condition of each processor as a first interrupt priority. If the arbitration fails to determine a sole processor, additional arbitration finally selects a sole processor P on the basis of the second interrupt priority which is varied circularly.