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:
Apr. 07, 1998
Filed:
Oct. 31, 1996
Applicant:
Inventor:
David Vivian Jaggar, Cherry Hinton, GB;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395800 ; 395568 ;
Abstract
A data processing system employing registers for holding data to be processed is described. The registers are grouped into sets of registers 2. A register selecting instruction word controls selection of a particular ones of the registers from within the sets of registers 2 to be available for data processing. The register selecting instruction word includes control fields for each set of registers, the bits of each control field specifying a register swap within the a respective set of register. The new register to be selected is derived from an exclusive OR operation performed upon a currently selected register identification word and the control field for that set of registers.