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. 13, 2007
Filed:
Dec. 05, 2003
Carl R. Crandall, Hugo, MN (US);
Craig B. Johnson, Shoreview, MN (US);
Mitch M. Maurer, Brooklyn Park, MN (US);
Yonghe Liu, Shoreview, MN (US);
Carl R. Crandall, Hugo, MN (US);
Craig B. Johnson, Shoreview, MN (US);
Mitch M. Maurer, Brooklyn Park, MN (US);
Yonghe Liu, Shoreview, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
The various embodiments of the invention relate to analyzing operations of an emulated input-output processor. Instructions native to the first type of instruction processor are emulated on a second-type instruction processor. The instruction processor emulator executes an operating system that includes instructions native to the first type of instruction processor. The operating system includes instructions that write input/output (IO) requests to the memory arrangement in response to IO functions invoked by a program. An IOP emulator that is executable on the second-type processor emulates IOP processing of IO requests from the memory arrangement. The IOP emulator maintains in the memory arrangement a first set of data structures used in processing the IO requests. State data currently contained in the data structures is stored on a retentive storage device, and in response to user input controls, the state data is read from retentive storage and displayed.