from
The Free On-line Dictionary of Computing (8 July 2008)
Programming Language/Systems
PL/S
<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?]
(1999-01-24)