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:
Feb. 07, 1995
Filed:
Oct. 05, 1992
Joseph A Gutierrez, Austin, TX (US);
William C Moyer, Dripping Springs, TX (US);
Yui K Ho, Austin, TX (US);
Pee-Keong Or, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A method and apparatus for accessing a register in a data processing system (10). In one form, the present invention uses a storage circuit (23) to act as a register copy (23) of the original register (33). An access to the register location may actually selectively access the original register (33), the register copy (23), or both the original register (33) and the register copy (23). Register select logic (70) is used to perform this selection function. Register select logic (70) may also be used to keep track of the current status of the contents of the original register (33) and of the contents of the register copy (23). Register select logic (70) may also monitor the internal state of data processing system (10).