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:
Aug. 17, 1999
Filed:
Sep. 19, 1997
Takao Katayama, Ikeda, JP;
Shinichi Yamaura, Kobe, JP;
Keiichi Yoshioka, Sanda, JP;
Kazuhiko Hara, Sanda, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A microprocessor having an instruction prefetch function includes a storage circuit in which an instruction externally supplied to the microprocessor via an external interface is stored, a first latch circuit which latches a write address value of the storage circuit in response to an interrupt signal externally supplied to the microprocessor, and an internal interrupt signal outputting circuit which compares a read address value of the storage circuit indicating the instruction stored in the storage circuit with the write address value supplied from the first latch circuit and which generates the internal interrupt signal only when the read address value and the write address value coincide with each other. The microprocessor processes an interrupt process in response to the internal interrupt signal.