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:
Jun. 15, 1993
Filed:
Jul. 19, 1991
Richard I Baum, Poughkeepsie, NY (US);
Terry L Borden, Poughkeepsie, NY (US);
Carol E Clark, Poughkeepsie, NY (US);
Alan G Ganek, Chappaqua, NY (US);
James Lum, Redwood City, CA (US);
Michael G Mall, Lagrangeville, NY (US);
Casper A Scalzi, Poughkeepsie, NY (US);
Richard J Schmalz, Wappingers Falls, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A computer system has general purpose registers, control registers and access registers for containing information to allow address space capability. A linkage stack uses protected address space to store state information during program call and program return operations. The linkage stack contains information relating to state entries for the saved information and header and trailer entries to point to other linkage stack sections. A control register contains the pointer to the current linkage stack entry and is changed as the program call or return moves through the stack.