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. 07, 1994
Filed:
Oct. 16, 1992
Kurt M Thaller, Acton, MA (US);
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A method and apparatus for polling a status register selectively delays the returning of status data in the status register. Prior to polling, a match register is loaded via a system bus with a desired status. Status data is presented to the system bus when the status data is the same as the desired status. The features of the invention also permit the masking of selective bits of the status register during the comparison of the status data with the desired status. A mode register selectively inhibits the delayed presentation, and a timer ensures that status data is presented to the system bus within a predetermined interval even if the status data is not the same as the desired status.