IBM System/360 Model 67: Difference between revisions

Revision as of 12:51, 14 March 2021

Revision as of 17:00, 14 March 2021

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== Operating systems ==

{{Further2|[[History of IBM mainframe operating systems]]|[[TSS/360]]|[[CP/CMS]]|[[Michigan Terminal System|MTS]]|[[VP/CSS]]}}

{{Prose|date=March 2021}}

*When the S/360-67 was announced in August 1965, IBM also announced [[TSS/360]], a time-sharing operating system project that was canceled in 1971 (having also been canceled in 1968, but reprieved in 1969). IBM subsequently modified TSS/360 and offered the TSS/370 [[Request price quotation|PRPQ]]<ref>{{cite manual

| title = TSS/370 User Data

| id = GX28-6400-3

Line 325 ⟶ 326:

}}

</ref> for three releases before cancelling it.

:IBM's failure to deliver TSS/360 as promised opened the door for others to develop operating systems that would use the unique features of the S/360-67:

*MTS, the [[Michigan Terminal System|MTS]], the Michigan Terminal System, was the time-sharing operating system developed at the University of Michigan and first used on the Model 67 in January 1967. Virtual memory support was added to MTS in October 1967. Multi-processor support for a duplex S/360-67 was added in October 1968.<ref>Pugh, ''op. cit., p.'' 364 &ndash; MTS on dual processor S/360-67 in 1968</ref>

:IBM's failure to deliver TSS/360 as promised opened the door for others to develop operating systems that would use the unique features of the S/360-67:

* [[CP/CMS]] was the first [[virtual machine]] operating system. Developed at IBM's [[Cambridge Scientific Center]] (CSC) near MIT. CP/CMS was essentially an unsupported research system, built away from IBM's mainstream product organizations, with active involvement of outside researchers. Over time it evolved into a fully supported IBM operating system ([[VM/370]] and today's [[z/VM]]).

* [[Michigan Terminal System|MTS]], the Michigan Terminal System, was the time-sharing operating system developed at the University of Michigan and first used on the Model 67 in January 1967. Virtual memory support was added to MTS in October 1967. Multi-processor support for a duplex S/360-67 was added in October 1968.<ref>Pugh, ''op. cit., p.'' 364 &ndash; MTS on dual processor S/360-67 in 1968</ref>

* [[VP/CSS]], based upon CP/CMS, was developed by [[National CSS]] to provide commercial time-sharing services. It was based upon CP/CMS.

* [[CP/CMS]] was the first [[virtual machine]] operating system. Developed at IBM's [[Cambridge Scientific Center]] (CSC) near MIT. CP/CMS was essentially an unsupported research system, built away from IBM's mainstream product organizations, with active involvement of outside researchers. Over time it evolved into a fully supported IBM operating system ([[VM/370]] and today's [[z/VM]]).

* [[VP/CSS]] was developed by [[National CSS]] to provide commercial time-sharing services. It was based upon CP/CMS.

{{Further2|[[History of IBM mainframe operating systems]]|[[TSS/360]]|[[CP/CMS]]|[[Michigan Terminal System|MTS]]|[[VP/CSS]]}}

== Legacy ==