Managing sets of input/output communications subadapters of an input/output subsystem

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 connec...

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Main Authors LEHMANN HANS-HELGE, KUBALA JEFFREY P, SHAPLEY CHARLES E, GAINEY CHARLES W.JR, SITTMANN GUSTAV E, RIEDY DALE F.JR, BRICE FRANK W.JR, EASTON JANET R, YUDENFRIEND HARRY M, NJOKUARLES UGOCHUKWU, WYMAN LESLIE W, LU TAN, OAKES KENNETH J
Format Patent
LanguageEnglish
Published 28.07.2005
Edition7
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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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 64k subchannels.
AbstractList 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 64k subchannels.
Author SHAPLEY CHARLES E
LEHMANN HANS-HELGE
LU TAN
EASTON JANET R
SITTMANN GUSTAV E
GAINEY CHARLES W.JR
NJOKUARLES UGOCHUKWU
BRICE FRANK W.JR
RIEDY DALE F.JR
KUBALA JEFFREY P
YUDENFRIEND HARRY M
WYMAN LESLIE W
OAKES KENNETH J
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– fullname: EASTON JANET R
– fullname: YUDENFRIEND HARRY M
– fullname: NJOKUARLES UGOCHUKWU
– fullname: WYMAN LESLIE W
– fullname: LU TAN
– fullname: OAKES KENNETH J
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SubjectTerms CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
Title Managing sets of input/output communications subadapters of an input/output subsystem
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