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. 05, 1999
Filed:
May. 16, 1997
Applicant:
Inventors:
Raul A Garibay, Jr, Richardson, TX (US);
Marc A Quattromani, Allen, TX (US);
Douglas Beard, Dallas, TX (US);
Mark W Bluhm, Plano, TX (US);
Assignee:
National Semiconductor Corporation, Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
711206 ; 711202 ; 711203 ; 711207 ;
Abstract
Systems and methods for virtual addressing are disclosed having an address translation unit with variable page size by employing direct, victim, and programmable block translation look aside buffers. Selective comparisons between contents on a linear address bus and linear address tags are controlled by a size mask register which further controls a multiplexer to selectively steer bits onto a physical address bus from either the linear address bus or a physical address register.