Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2007-10-02
2007-10-02
Sparks, Donald (Department: 2181)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S038000
Reexamination Certificate
active
10764421
ABSTRACT:
Input/output (I/O) communications subadapters, such as subchannels, of an I/O subsystem are dedicated to components, such as I/O devices, of the I/O subsystem. The subadapters provide information about the associated components, in response to the execution of I/O instructions. To enhance I/O connectivity, a plurality of sets of I/O subadapters is provided to an operating system image. This allows programs of the operating system image to access a same component via different sets of I/O communications subadapters. Further, it enables an operating system image to use more than 64 k subchannels.
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Brice, Jr. Frank W.
Easton Janet R.
Gainey, Jr. Charles W.
Kubala Jeffrey P.
Lehmann Hans-Helge
Heslin Rothenberg Farley & & Mesiti P.C.
International Business Machines - Corporation
Martinez David E.
Schiller, Esq. Blanch E.
Shkurko, Esq. Eugene I.
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