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:
Jan. 31, 2012
Filed:
Jan. 21, 2010
Chiloda Ashan Senerath Pathirane, Haverhill, GB;
Antony John Penton, Cambridge, GB;
Chiloda Ashan Senerath Pathirane, Haverhill, GB;
Antony John Penton, Cambridge, GB;
ARM Limited, Cambridge, GB;
Abstract
A data processing systemis provided with multiple processorswhich can operate in either a split-mode in which each processor executes its own program flow or a locked-mode in which the processors execute the same program flow. Debug circuitryis associated with each of the processors. In an emulation-locked mode of operation, one of the processorsis active and its respective debug circuitryis active to update the debug state data so as to debug the locked mode code. At the same time, the second processoris held inactive and its state is maintained as well as the debug state data of the debug circuitrywithin that inactive processor. This maintains the debug state data of the processoracross entry and exit to the locked mode of operation.