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. 10, 1984
Filed:
Feb. 04, 1981
Applicant:
Inventor:
Dongsung R Kim, Laguna Hills, CA (US);
Assignee:
Burroughs Corporation, Detroit, MI (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
Subroutine control apparatus for providing shared subroutine control for a plurality of executing tasks. Multiple levels of subroutine entry are provided for each task by employing a plurality of selectably accessible stacks, one for each task, along with corresponding pointer registers. These provide storage for a plurality of return addresses as required for each task during task performance. In addition, an updatable significantly faster access register is provided for each task for storing its most recent return address so as to permit return addresses to be rapidly made available when an executing task reaches the end of a subroutine.