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:
Sep. 22, 2020
Filed:
Mar. 22, 2019
Dejan Spasov, Skopje, MK;
Dejan Spasov, Skopje, MK;
Other;
Abstract
A processor may include reservation stations to host instructions waiting to be issued to the execution units. Instructions in reservation stations comprise wrap bits and indexes, assigned by modulo counters. If wrap bits of two instructions are equal, then instruction with smaller index is older. If wrap bits of two instructions are different, then instruction with larger index is older. Responsive to exception event, wrap bit and index of an instruction executed with exception is compared with wrap bits and indexes of instructions in reservation stations to determine relative age. Instructions younger than the instruction executed with exception may be flushed from the reservation stations. Instructions in reservation stations may be grouped in pairs. In each pair, older ready instruction is selected using ready-to-issue bits, wrap bits, and indexes. Grouping and selecting instructions is repeated until one instruction remains. The remaining instruction is referred to as the oldest ready instruction.