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. 30, 1992
Filed:
Jan. 17, 1989
William T Moore, Jr, Elk Mound, WI (US);
Cray Research Inc., Minneapolis, MN (US);
Abstract
A system for scheduling instruction issuance in a vector register computer achieves increased efficiency of operation by performing pre-issuance checks to determine if resources requested by the instruction will be available when the instruction issues. A decoding apparatus first determines particular resources requested by the instruction, which includes apparatus for decoding vector register requests, functional unit requests, and address and scalar register path requests. Following decoding, a conflict resolution apparatus checks resource reservation flags to determine if the requested resources will be available when the instruction issues. If any requested resources will be busy, the system issues a primary conflict signal. At the scheduled instruction issuance time, the system again checks the resource reservation flags in response to the primary conflict signal. If the requested resources are still busy, the system generates a secondary conflict signal for as long as the requested resources remain busy. Finally, when the instruction issues, the system sets the resource reservation flags to reserve the requested resources for the instruction.