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:
May. 04, 1987
Applicant:
Inventors:
Robert Allison, Medfield, MA (US);
Brian Lefsky, West Newton, MA (US);
Assignee:
Prime Computer, Inc., Natick, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642544 ; 3642549 ;
Abstract
A system for controlling the addressing of a memory on a predetermined multi-megabyte decode boundary. An address shifter is coupled between CPU address lines and backplane area bussed address lines. The address shifter is controlled in accordance with the control signal determined by the memory array of largest capacity of all memory arrays. The control signal has different states to control the address shifter to couple different address bit patterns therethrough to the backplane area address bus as a function of the selected control signal state.