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:
Aug. 17, 1993
Filed:
Jun. 01, 1992
Paul C Rossbach, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
In a data processor an Sweeney-Robertson-Tocher (SRT) divider is provided having a negative divisor sticky detection circuit. The negative divisor sticky detection circuit allows negative sticky correction to occur in the SRT divider without requiring additional iteration cycles. At the conclusion of iterative cycles of a divide operation, a final remainder is formed and stored in a latch in the SRT divider. The negative divisor sticky detection circuit determines whether a negative final remainder is equal in magnitude to a divisor value by bit-wise XORing the final remainder with the two's complement value of a divisor, immediately before sticky logic detects the negative sticky bit. The final sticky value is obtained by logically combining the negative sticky bit with a positive sticky bit computed by a positive divisor sticky detection circuit.