07840717 is referenced by 44 patents and cites 138 patents.

A computer program product, apparatus and method for processing a variable length device command word (DCW) at a control unit configured for communication with an input/output (I/O) subsystem in an I/O processing system. The computer program product includes a tangible storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method. The method includes receiving a DCW at the control unit from the I/O subsystem. The DCW specifies one or more I/O operations and includes a command, a control data count, and control data having a varying length specified by the control data count. The control data is extracted in response to the control data count. The command is then executed in response to the extracted control data to perform the specified one or more I/O operations.

Title
Processing a variable length device command word at a control unit in an I/O processing system
Application Number
12/30939
Publication Number
7840717 (B2)
Application Date
February 14, 2008
Publication Date
November 23, 2010
Inventor
Gustav E Sittmann
Webster Groves
MO, US
Dale F Riedy
Poughkeepsie
NY, US
Ugochukwu C Njoku
Yonkers
NY, US
Matthew J Kalos
Tucson
AZ, US
Catherine C Huang
Poughkeepsie
NY, US
Daniel F Casper
Poughkeepsie
NY, US
John R Flanagan
Poughkeepsie
NY, US
Agent
John Campbell
Cantor Colburn
Assignee
International Business Machines Corporation
NY, US
IPC
G06F 3/00
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