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IBM 360 Operating Systems Release History
20091006 18:08
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OS/360
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Release 1 PCP Pre-release in 11/1965
Announce: 12/1965
Availability: 03/31/1966 14 components, 1152 modules, 400359 source statements
Release 2
Availability: 06/66 14 components
Release 4/5
Announce: 08/18/1966
Availability: 08/66 17 components
Release 6 MFT
Announce: 04/29/1966
Availability: 10/66 19 components
Release 8
Announce:
Availability: 12/07/1966 22 components
Release 9.5
Availability 02/1967 29 components
Release 11
Availability: 05/67 34 components
Release 12 MVT, source resequenced
Announce:
Availability: 08/08/1967
Release 13
Announce:
Availability: 08/1967
Manuals: 09/1967
Release 14
Availability 01/1968 35 components
Release 15/16 MFT-II, VTOC positioning
Announce:
Availability: 08/30/1968 40 components, 3819 modules, 1740364 source statements (r16)
Manuals: 05/1968
Release 17
Announce:
Availability: 03/1969 44 components
Manuals: 11/1968
Release 18.0 SMF for MVT
Announce: 07/1969
Availability: 09/1969 >48 components
Manuals: 11/1969
Release 18.6
Announce: 10/1969
Availability:
Release 19.0
Availability: 03/1970 >50 components
Manuals: 06/1970
Release 19.1 SMF for MFT, MFT Attach, 1285/87/88 support
Announce: 06/01/1970
Availability: 08/05/1970
Release 19.6 Update (PTF) release
Announce: 08/05/1970
Availability:
Release 20.0
Availability: 09/1970 >53 components
Manuals: 01/1971
Release 20.1 TSO
Announce: 02/1971
Availability:
Manuals: 03/1971, 06/1971
Release 20.6 Update (PTF) release
Announce:
Availability:
Manuals: 09/1971
Release 21.0
Announce:
Availability:
Manuals: 03/1972
Release 21.6
Manuals: 08/1972
Release 21.7
Manuals: 04/1973
Release 21.8
Announce: 08/1972
Availability:
Manuals: 08/1974
DOS/360
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Release 6
Announce:
Availability: 12/7/1966
Release 20
Manuals: 04/1969
Release 21
Manuals: 11/1969
Release 24
Manuals: 10/1970
Release 28 DOS/VS, CRT console (360/125), IBM Boeblingen
Announce: 1973
Availability:
Release 29 VSAM, 3340 support
Announce: 1974
Availability:
BOS/360
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Release 17
Manuals: 07/1968
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Sources
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Lehman, "Program Evolution, Processes of Software Change" pg. 45
chart of all releases 1-20 and their size
http://d2-enterprises.org/f4.htm
In the book "IBM's 360 and Early 370 Systems" I found the following
P-letters related to DOS and OS360. The numbers (84, 123 etc) refers
to the footnote numbers in the book.
84 IBM Programming Announcement, 7 december 1966: System/360 Disk
Operating System, System Release 6, Letter P66-111
123 IBM Programming Announcement, 31 March 1966: IBM Operating
System/360 (Primary Control Program), Letter P66-22
124 IBM Programming Announcement, 29 April 1966: IBM Operating
System/360 (MFT), Letter P66-30
125 IBM Programming Announcement, 7 December 1966: IBM Operating
System/360 Release 8, Letter P66-114
126 IBM Programming Announcement, 30 August 1968: IBM Operating
System/360 Release 15/16, Letter P68-120
127 IBM Programming Announcement, 8 August 1967: IBM Operating
System/360 Release 12, Letter P67-81
185 IBM Programming Announcement, 18 August 1966: IBM Operating
System/360 Release 4 and 5, Letter P66-72
http://www.mxg.com/news/news15.asp (History of SMF)
IBM System 360/Operating System Release 18 Guide GC28-6718-1 July, 1969
IBM System/360 Operating System Consolidated Document Release 18 GY28-6681-2 Third Edition (October, 1969)
Updated Version of Release 18, designated as Release 18.6, may now be ordered from PID.
IBM System/360 Operating System: Release 19 Guide GC28-6733-1 June 1970
IBM System/360 Operating System: Release 20 Guide GC28-6730-0 January 1971
Announced 20.0 with support for S/360 and new S/370 155 processor (S/370
165 in April) and indicates to expect 20.6 in 6-8 months.
IBM System/360 Operating System: Release 21 Guide GC28-6730-2 March, 1972 (Release 21.0)
Announced the REC parameter and minor change in format of SMF records,
and indicated that 21.6 would be along in 4-6 months.
IBM System/360 Operating System: Release 21 Guide GC28-6730-04 August, 1972 (Release 21.6)