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:
Mar. 11, 2003
Filed:
Sep. 29, 1999
David John Gwilt, Waterbeach, GB;
Andrew Christopher Rose, Cherry Hinton, GB;
Peter Guy Middleton, Saffron Walden, GB;
David Michael Bull, Balsham, GB;
ARM Limited, Cambridge, GB;
Abstract
A data processing system is provided having a main processor and a coprocessor . When in a debug mode, the main processor and the coprocessor are supplied with different instructions. The coprocessor is supplied with a coprocessor debug data generation instruction (MCR) whilst the main processor is supplied with a main processor data capture instruction (LDR). The coprocessor responds to the MCR instruction by controlling debug data representing state of the data processing apparatus to be placed upon a data bus from where it is read by the main processor under control of the LDR instruction.