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:
May. 08, 1990
Filed:
Oct. 05, 1988
Masahiro Shouda, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A debugging microprocessor used in an in-circuit emulator is made to be capable of moving into a debugging interrupt processing execution mode in response to an external supervisor interrupt instruction. This debugging microprocessor comprises a first program counter put in an operating condition when the microprocessor is in a user's program execution mode, a second program counter put in an operating condition when the microprocessor is in a debugging interrupt processing execution mode, and a program counter controller responding to the external supervisor interrupt instruction to cause a content of the second program counter to be outputted as a program counter value. The program counter controller also responds to a return instruction to cause a content of the first program counter to be outputted as a program counter value. Thus, the content of the first program counter can be accessed in the course of the debugging interrupt processing execution.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile