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. 10, 2009
Filed:
Nov. 22, 2002
Manisha Agarwala, Richardson, TX (US);
Lewis Nardini, Dallas, TX (US);
Timothy D. Anderson, Dallas, TX (US);
Manisha Agarwala, Richardson, TX (US);
Lewis Nardini, Dallas, TX (US);
Timothy D. Anderson, Dallas, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
This invention tracks emulation changes in the program counter of the central processing unit of a data processor during emulation halt. The sequence includes: pausing the central processing unit in response to an emulation halt; employing the emulator to change the program counter. In this case when the central processing unit resumes operation, there will be a discontinuity in the program counter. The trace data will show a change in the program counter address. This invention uses a unique exception signal similar to those used to mark interrupts to inform the user that this program counter discontinuity is due to an emulation change of the program counter during emulation halt.