Input/Output Configuration Program: Difference between revisions

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| name = Input/Output Configuration Program

| title = Input/Output Configuration Program

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| date = January 1987}}</ref> mode, IBM changed the I/O architecture to allow the [[Channel Subsystem]] to handle the channel scheduling that the operating system handled in S/370 mode. The new I/O architecture used a 16-bit '''subchannel number''', a 16-bit '''device number''' and an 8-bit '''Channel Path Identifier''' ('''Channel Path Id''' or '''CHPID'''); the [[Channel Subsystem]] was responsible for mapping the '''subchannel number''' to the channel and device numbers, for queuing I/O requests and for selecting from the available paths.

Starting with [[IBM zZ#IBM zSeries family|z990]], IBM introduced the concept of a '''Logical Channel Subsystem'''<ref>{{cite manual

| title = IBM IBM eServer zSeries 990 Technical Guide

| id = SG24-6947-01

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<!--- See http://en.wikipedia.org/wiki/Wikipedia:Footnotes on how to create references using <ref></ref> tags which will then appear here automatically -->

{{Reflist | refs=

<ref name=GA22-7123>{{cite manual

|author author = IBM

{{cite manual

|title title = Enterprise System/9000 Enterprise System/3090: Processor Resource/Systems Manager Planning Guide

| author = IBM

|id id = GA22-7123-10

| title = Enterprise System/9000 Enterprise System/3090: Processor Resource/Systems Manager Planning Guide

| version = SixthEleventh Edition

| id = GA22-7123-10

|date version = EleventhAugust Edition1993

|url url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/FRAMESET/DA3A6010/CCONTENTS?DT=19930813120744}}

| date = August 1993

}}{{Dead link|date=September 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

| url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/FRAMESET/DA3A6010/CCONTENTS?DT=19930813120744}}

</ref>

<ref name=GA22-7525>

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| url=http://publibz.boulder.ibm.com/epubs/pdf/iea2g890.pdf}}

</ref>

<ref name=GC28-1615>{{cite manual

|author = IBM

{{cite manual

|title title = MVS/ESA: MVS Configuration Program MVS/ESA System Product: JES2 Version 4 JES3 Version 4

| author = IBM

|id id = GC28-1615-04

| title = MVS/ESA: MVS Configuration Program MVS/ESA System Product: JES2 Version 4 JES3 Version 4

|url url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/BOOKS/IEA4G702/CCONTENTS?DT=19930625065231

| id = GC28-1615-04

|version = Fifth Edition

| url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/BOOKS/IEA4G702/CCONTENTS?DT=19930625065231

|date version = Fifth EditionMarch 1993

}}{{Dead link|date=September 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

| date = March 1993}}

<ref name=GC38-0097>{{cite manual

</ref>

|author = IBM

<ref name=GC38-0097>

|id = GC38-0097-05

{{cite manual

|title title = Enterprise System/9000 Enterprise System/3090: Input/Output Configuration Program User's Guide and ESCON Channel-to-Channel Reference

| author = IBM

|date id = GC38-0097-05February 1993

|version = Sixth Edition

| title = Enterprise System/9000 Enterprise System/3090: Input/Output Configuration Program User's Guide and ESCON Channel-to-Channel Reference

|url url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/FRAMESET/DA0A4005/CCONTENTS?DT=19930212144028}}

| date = February 1993

}}{{Dead link|date=September 2024 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>

| version = Sixth Edition

| url = http://publibfp.dhe.ibm.com/cgi-bin/bookmgr/FRAMESET/DA0A4005/CCONTENTS?DT=19930212144028}}

</ref>

<ref name=GC38-0401>{{cite manual

| author = IBM