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:
Dec. 11, 1984
Filed:
Mar. 18, 1982
Charles A Lemaire, Rochester, MN (US);
David A Luick, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Extended control word decode circuitry increases the number of simultaneous functions performed during execution of a control word in the central processing unit (CPU) of a computer system. A first field of a control word is decoded into 2.sup.n decodes for testing or specifying a first set of CPU conditions. A second field in the control word is decoded into 2.sup.m -X decodes for testing or specifying a second set of CPU conditions. The X decodes, which together with the 2.sup.n decodes of the first field test or specify multiples or pairs of a third set of CPU conditions and inhibit the 2.sup.n decodes from testing or specifying said first set of CPU conditions.