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:
Nov. 07, 1989
Filed:
Apr. 20, 1987
Junichi Iwasaki, Tokyo, JP;
Hisao Harigai, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A microprocessor having a multi-stage pipeline structure, comprises: a status flip-flop having its output changing when the instruction code of a predetermined instruction is decoded in the microprocessor; a circuit for outputting the output of the status flip-flop in synchronism with the output timing of an address for the bus cycle period of the microprocessor; and a circuit for sequentially storing the information, which appears at the input/output terminals of the microprocessor, as time-series data outside of the microprocessor. The time-series data is edited by discriminating the bus cycle of the microprocessor belongs to the bus cycle following an instruction on or before the predetermined instruction for changing the output of the status flip-flop or the bus cycle following an instruction on or after the predetermined instruction, with reference to the information outputted from the status flip-flop inside of the microprocessor to the outside of the same.