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. 27, 1990
Filed:
Nov. 30, 1988
Tomoo Aoyama, Hadano, JP;
Hiroshi Murayama, Hadano, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Computer Engineering Co., Ltd., Kanagawa, JP;
Abstract
A vector processor having a scalar procesing unit, a vector processing unit, a main storage unit, an extended storage unit, a storage control unit, and a paging processor unit, in which the storage control unit address translation for an access request from the vector processing unit to the main storage unit and includes a circuit for storing a kind of an access request issued for each storage location of the main storage the paging processor unit includes a circuit operative in response to issuance of an access request for data in a logical address space not existing in the main storage unit for interrupting a vector access request related thereto from the vector processing unit, a circuit for releasing the interruption according to an instruction, a circuit for loading the main storage unit with requested data of a logical address space existing in the extended storage unit, and a circuit for detecting an area of the main storage having a lower access frequency so as to move data from the area into the extended storage unit. A microprogram is used to execute programming of an algorithm to achieve a data transfer between the main storage unit and the extended storage unit.