Programming Language/Systems
<language> (PL/S) An IBM machine-oriented language derived from PL/I in the late 1960s for the IBM 360 and IBM 370. PL/S permitted inline assembly language and control over register usage.
Much of IBM 360 OS/MFT(?), OS/MVT(?), OS/VS1 and OS/VS2 (OS/SVS and MVS) were written in PL/S.
It was used internally and never released to the public.
It is documented in various IBM internal ZZ-?
publications.
Versions: PLS1, PLSII.
["PL/S, Programming Language/Systems", W.R. Brittenham, Proc GUIDE Intl, GUIDE 34, May 14, 1972, pp. 540-556].
[Were MFT and MVT in PL/S or pure BAL?
Dates?]
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