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. 02, 1997
Filed:
Jan. 26, 1996
Applicant:
Inventor:
John J Pearce, Austin, TX (US);
Assignee:
Dell USA, LP, Round Rock, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395500 ; 39518504 ; 395186 ;
Abstract
System management mode (SMM) is utilized, despite operating system security measures, by furnishing a polled interface for SMM. When an application program is to make an XBIOS call, the application program posts an XBIOS request in a storage. SMM is activated periodically by a timer and, during activation, checks the storage for XBIOS requests. When an XBIOS request is posted, SMM processes the request XBIOS command and leaves a response from the XBIOS call in the storage. The application program, which continually loops, monitors the storage and detects replacement of the XBIOS request by the XBIOS result to realize completion of an XBIOS call.