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:
Jul. 18, 1989
Filed:
Mar. 23, 1987
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
An address translation circuit for translating a logical address into a physical address in a computer system using a virtual storage method includes two high-speed buffers (TLB's) for an instruction and an operand, respectively. One of the buffers is selected for use at the time of a memory access depending on a signal supplied from a processing unit to indicate whether the memory access is related to an instruction cycle or an operant cycle. This configuration enables a high-speed address translation without lowering the TLB hit rate and without increasing the amount of the hardware components.