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:
Jan. 23, 1990
Filed:
Jul. 02, 1986
Shinichiro Yamaguchi, Hitachi, JP;
Hidekazu Matsumoto, Hitachi, JP;
Tadaaki Bandoh, Naka, JP;
Hiroaki Nakanishi, Hitachi, JP;
Kenzi Hirose, Hitachi, JP;
Takao Kobayashi, Hitachi, JP;
Yoshihiro Miyazaki, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Engineering Co., Ltd., Tokyo, JP;
Abstract
A data processor for execution of tagged data and tagless data has a decoder for discriminating whether the data is tagged or tagless one and in case of a tagged data, separates a tag part and uses the remaining part for address computation. The data processor also comprises a unit for evaluating the tag part and a micro program controller for multi-branching in accordance with the evaluation result of the tag part. The tag evaluating unit includes an extender eliminating part for extracting the tag part from data on a data bus, a plurality of tag part storing registers for storing the tag part from the eliminating part under the control of the micro program controller, and a tag multi-way jump encoder for generating a tag multi-way jump address to feed it to the controller on the basis of the outputs of the registers and a signal from the micro program controller, thereby enabling tag multi-way jump.