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. 21, 1978
Filed:
Apr. 01, 1977
Isamu Yamazaki, Yokohama, JP;
Tokyo Shibaura Electric Co., Ltd., Kawasaki, JP;
Abstract
A microprogrammed LSI microprocessor comprises a read only memory (ROM) for storing therein microprograms and a decode table for the operation code of macroinstructions, and an arithmetic logic control section constructed into a one package of LSI circuit. The arithmetic logic control section is constructed into a circuit arrangement which, on the assumption that the operation code of macroinstructions be an address, sets the starting address of a corresponding macroinstruction read from the ROM in a location counter, reads from the ROM a microinstruction corresponding to the starting address set in the location counter to set this microinstruction in a microinstruction register, and arithmetically executes the microinstruction stored in the microinstruction register.