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:
Apr. 09, 2013
Filed:
Dec. 21, 2007
Ashley Miles Stevens, Cambridge, GB;
Daren Croxford, Cambridge, GB;
Ashley Miles Stevens, Cambridge, GB;
Daren Croxford, Cambridge, GB;
ARM Limited, Cambridge, GB;
Abstract
Circuitry for receiving transaction requests from a plurality of masters and the masters themselves are disclosed. The circuitry comprises: an input port for receiving said transaction requests, at least one of said transaction requests received comprising an indicator indicating if said transaction is a speculative transaction; an output port for outputting a response to said master said transaction request was received from; and transaction control circuitry; wherein said transaction control circuitry is responsive to a speculative transaction request to determine a state of at least a portion of a data processing apparatus said circuitry is operating within and in response to said state being a predetermined state said transaction control circuitry generates a transaction cancel indicator and outputs said transaction cancel indicator as said response, said transaction cancel indicator indicating to said master that said speculative transaction will not be performed.