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:
Jul. 19, 1983
Filed:
Feb. 11, 1980
David H Bernstein, Ashland, MA (US);
Richard A Carberry, Cupertino, CA (US);
Michael B Druke, Chelmsford, MA (US);
Ronald I Gusowski, Westboro, MA (US);
Data General Corporation, Westboro, MA (US);
Abstract
A data processing system using microcode architecture in which a two-level microcode system comprises one or more first, or 'horizontal', microinstructions and a plurality of second or 'vertical', microinstruction portions in a vertical microcontrol store. In a preferred embodiment the vertical microinstruction portions include one or more 'modifier' fields, a selection field for selecting a horizontal microinstruction and a sequencing field for selecting the next vertical microinstruction portion of a sequence thereof, one or more fields of the horizontal microinstructions being capable of modification by the vertical modifier fields in order to form output microinstructions for performing data processing operations.