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:
Dec. 19, 1989
Filed:
Sep. 18, 1987
Applicant:
Inventors:
Jay A Hartvigsen, Austin, TX (US);
William C Moyer, Dripping Springs, TX (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ;
Abstract
In a data processing system comprising a central processing unit (CPU), a memory management unit (MMU) and a storage system, the MMU translates each of the logical addresses output by the CPU to a corresponding physical address in the storage system by selectively using translation descriptors stored in an address translation cache. In response to receiving a dynamic disable signal, the MMU will provide each logical address as the corresponding physical address without translation. In addition, the MMU will preserve the state of the entries in the address translation cache, and 'freeze' the translation activities.