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:
Sep. 13, 1994
Filed:
Oct. 23, 1992
Applicant:
Inventors:
Yasushi Ooi, Tokyo, JP;
Yoshiyuki Miki, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395275 ; 395400 ;
Abstract
A data processor which includes at least a central processing unit adapted to execute virtual memory management. The central processing unit internally includes a translation lookaside buffer (TLB) for translating a given virtual address into a corresponding real address. The TLB also generates a distinction signal indicating whether the translated real address designates a main memory or an external input/output device. In response to the distinction signal, a control signal generator outputs a set of input/output control signals for the access of the type designated by the distinction signal.