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:
Oct. 20, 1998
Filed:
Jun. 02, 1995
Jay A Hartvigsen, Austin, TX (US);
Chinh H Le, Austin, TX (US);
Wallace B Harwood, III, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for providing an external indication of internal cycles in a data processing system (10) in order to more easily debug software being executed by data processing system (10). In one embodiment, data processing system (10) provides cycle type signals (14) external to data processing system (10). The cycle type signals (14) can be used to determine a variety of information about the activity and bus cycles being performed within data processing system (10), activity which is not readily discernible except by way of the cycle type signals (14). In some cases the information provided by the cycle type signals (14) is sufficient for debug purposes; in other cases, information from additional signals, e.g. the address type signals (15) and the read/write signal (19) may also be required.