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:
Mar. 23, 1993
Filed:
Feb. 08, 1989
Noriyasu Mori, Yokohama, JP;
Hiroshi Tomita, Kawasaki, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In an information processing system having an instruction buffer, an instruction buffer is controlled to primarily increase the instruction hit ratio of a sequence of instructions including a procedure-call instruction. In the first configuration, there is provided a mechanism which subdivides the instruction buffer into a plurality of instruction buffer banks so as to switch the instruction buffer bank to a current use in association with a dynamic procedure call, thereby improving the instruction hit ratio in the procedure call and in the return operation. In the second configuration, there are provided instruction words to subdivide and to control the instruction buffer such that the user can specify a method of controlling the instruction buffer. An instruction loop is captured efficiently and an arbitrary instruction sequence of a program is stored as a resident routine in the buffer so as to increase the instruction hit ratio.