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:
Mar. 07, 1994
James S Divine, Austin, TX (US);
Charles F Studor, Austin, TX (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A data processing system (10) executes a branch instruction in a straight line microcode sequence. During execution of the instruction, a control unit (56) is provided to decode the instruction to provide a plurality of control signals and to determine a data value with which to test a condition of the instruction. A constants generation circuit (222) generates a mask value in response to the plurality of control signals. An arithmetic logic unit (224) logically combines the mask value with the data value to produce a masked value. A zero detect circuit (246) subsequently tests the masked value to determine if it is equal to zero and provides a condition signal to indicate if the condition of the instruction was satisfied. If the condition of the instruction is satisfied, an offset value plus one is added to a program counter value. Otherwise, the program counter value is incremented by one.