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:
May. 23, 1989
Filed:
Jul. 21, 1987
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642302 ; 3642413 ;
Abstract
In a multiprocessor system in which a plurality of instruction processors (IP's) share a main storage (MS) and a channel controller (CHC) through a system controller (SC), when an I/O interrupt request is issued, IP's connected to the SC are examined to determine whether each of the IP's is executing an instruction which permits acceptance of the I/O interrupt request during the execution of the instruction. If one of the IP's is not executing such an instruction and can accept the I/O interrupt request, that IP will be selected.