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. 07, 1987
Filed:
Apr. 23, 1981
Applicant:
Inventors:
David I Epstein, Framingham, MA (US);
Charles J Holland, Northboro, MA (US);
Assignee:
Data General Corporation, Westboro, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
A data processing system in which macroinstructions are decoded to provide a sequence of microinstructions comprising one or more microroutines. A stack storage means stores data for use in such microroutines. The final microinstruction of the microroutines is a request to retrieve or remove data from the stack. When no data is present therein (the stack is empty) a new macroinstruction is requested and when data is present in the stack the microroutine returns to another mircoroutine in which it is acting as a micro-subsroutine to permit continuation of the other microroutine.