Data processing: structural design – modeling – simulation – and em – Emulation – Of peripheral device
Reexamination Certificate
2007-02-13
2007-02-13
Frejd, Russell (Department: 2128)
Data processing: structural design, modeling, simulation, and em
Emulation
Of peripheral device
C703S026000, C703S027000, C714S028000, C714S035000
Reexamination Certificate
active
10729537
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.
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Crandall Carl R.
Johnson Craig B.
Liu Yonghe
Maurer Mitch M.
Crawford & Maunu PLLC
Frejd Russell
Johnson Charles A.
Starr Mark T.
Unisys Corporation
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