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:
Apr. 25, 1995
Filed:
Dec. 24, 1992
James S Divine, Austin, TX (US);
Charles F Studor, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A data processor (10) increments a sixteen bit program counter value using an arithmetic logic unit, ALU, (224) and an eight bit incrementer(250). The ALU increments a low byte of the program counter value. A carry generated by incrementing the low byte is propagated to the incrementer. The incrementer then increments the high byte of the program counter value. Subsequently, the high and low bytes of the program counter value are respectively stored in a high and low program counter register (200, 206). Therefore, eight bits of an incrementer which would have typically been required to implement an incrementer for the low byte of the program counter value have been eliminated without a reduction in functionality of the data processor.