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:
Oct. 03, 1995
Filed:
Sep. 28, 1992
Hiroyuki Kida, Hitachi, JP;
Hideo Maejima, Hitachi, JP;
Ikuro Masuda, Hitachi, JP;
Shirou Baba, Tokorozawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A data processing system incorporating a main memory for storing instructions and operands and performing data processing in a mode of microprogram control system in response to instructions read out of the main memory. The system translates an instruction word read out of the main memory into an intermediate machine word having the orthogonal format, and addresses a microprogram memory in correspondence to the instruction word by analyzing the intermediate machine word. The system further incorporates a plurality of register sets so that each different task can use an individual register set, and a memory for memorizing the number of registers holding parameters used commonly among procedures corresponding to the register sets, so that the number of registers for each use can be changed arbitrarily for each register set by using the memory.