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:
Oct. 27, 1998
Filed:
Sep. 20, 1995
Kin Shing Chan, Austin, TX (US);
Ravindra Kumar Nair, Briarcliff Manor, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
In response to reloading an instruction from main memory for storing in an instruction cache in a superscalar data processing system, a particular instruction category in which the instruction belongs is selected from multiple instruction categories. Types of data processing system resources required for instruction execution and a quantity of each type of resource required are determined. Thereafter, a plurality of decode bits are calculated, wherein the decode bits represent a particular instruction category in which the instruction belongs and the type and quantity of each data processing system resource required for execution of the instruction. Thereafter, the instruction and the predecode bits are stored in instruction cache. The predecode bits enable the dispatch unit to efficiently, and without fully decoding the instruction at dispatch time, select an execution unit for executing the instruction and determine if the data processing system resources required for execution of the instruction are available before the dispatch unit dispatches the instruction.