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. 11, 1997
Filed:
Jul. 24, 1995
Michael C Woodring, Beaverton, OR (US);
Paul D Crutcher, Beaverton, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A method for simulating an interrupt based application programming interface in a computer system, wherein a trap driver hooks to a real mode interrupt chain comprising at least one interrupt service routine for execution in a real mode of a central processing unit. The trap driver waits for a simulated real mode interrupt, and executes an interface function in a protected mode of the central processing unit if the simulated real mode interrupt specifies the application programming interface. Otherwise, the trap driver chains the simulated real mode interrupt to a next interrupt service routine in the real mode interrupt chain.