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.

Date of Patent:
Jul. 02, 1991

Filed:

Jan. 23, 1990
Applicant:
Inventors:

Barry Maskas, Marlboro, MA (US);

Jesse Lipcon, Harvard, MA (US);

Assignee:

Digital Equipment Corporation, Maynard, MA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ; 364240 ; 3642402 ;
Abstract

A digital data processing system includes a plurality of processing subsystems, each including an adapter for enabling transfers between the resident subsystem and other subsystems. The adapter includes a master section which enables transfers of data initiated by the subsystem between the input/output bus and the higher level communications mechanism, a slave section which enables transfers of data between the higher level communications mechanism and the input/output bus initiated by another subsystem and an interprocessor communications mechanism for enabling the subsystem and other subsystems to communicate to thereby enable the other subsystems to perform control operations in connection with the subsystem.


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