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:
Nov. 30, 1999
Filed:
Mar. 31, 1997
Sivakumar Makineni, Sunnyvale, CA (US);
Brian L Hughes, Fremont, CA (US);
Sunhyuk Kimn, Campbell, CA (US);
Michael Chow, Cupertino, CA (US);
Suri Babu Medapati, Santa Clara, CA (US);
Albert Lo, Mountain View, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A microprocessor having a pipelined floating point unit operable to bypass pre-rounded results at clock cycle i and provide the pre-rounded results as an operand for a second instruction at clock cycle i+2. In one embodiment, the pipelined execution unit includes at least a first execution step at clock cycle i, and a second execution step at a clock cycle i+1 and clock cycle i+2. The unit includes a bypass leading from the first execution step at clock cycle i, however, there is no bypass leading from the second execution step at clock cycle i+1. The bypass carries the pre-rounded results from the end of the first execution step to the front end of the pipeline via a latched data path which delays the pre-rounded result one clock cycle.