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:
Mar. 16, 1982
Filed:
Jun. 04, 1979
Applicant:
Inventors:
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
An operand fetch control system wherein an address modification mode code is provided in the instruction word and designates both the general storage location of an operand to be fetched and the mode of addressing required for fetching it. The address modification mode code is a two-bit binary number designating either a direct register addressing mode or a main memory indirect, index, or indirect index addressing mode. Mode code 00 designates the register mode while the codes 10, 01 and 11 designate the indirect mode, the index mode and the indirect index mode, respectively.