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:
Feb. 07, 1995
Filed:
May. 29, 1991
Applicant:
Inventors:
Wai-Ming R Chan, Austin, TX (US);
Eric W Schieve, Austin, TX (US);
Charles P Zeller, Austin, TX (US);
Gary W Abbott, Austin, TX (US);
Assignee:
Dell USA, L.P., Austin, TX (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395700 ; 371 111 ; 3642221 ; 3642663 ; 3642802 ; 3642803 ; 3642809 ;
Abstract
A computer which carries its BIOS in a Flash EPROM. A UV-EPROM carries a redundant BIOS, which can be overlaid onto the BIOS address space by selection with a physical switch. The BIOS contains a small core software program, at the BIOS entry point, which checks BIOS integrity, and provides for reloading the Flash EPROM's BIOS if needed (from a floppy disk, or by copying the entire contents of the UV-EPROM).