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:
Jan. 31, 1995
Filed:
Jan. 10, 1992
Applicant:
Inventors:
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395400 ; 364D / ; 364245 ; 3642472 ; 364254 ; 3642543 ; 3642551 ; 3642558 ; 364259 ; 3642591 ;
Abstract
A method for generating an address for addressable locations of a computer system where two registers are overlapped. Those bits of the two registers that overlap are logically combined together using a boolean operation when generating the address. Using this method, the higher order register can be used to select a segment of the addressable space of the computer system. Then, all accesses to that portion of the addressable space can be controlled by changing only the lower order register. This results in a saving of time since only one of the registers need be reloaded for each subsequent access.