According to the "official" history:
History
In the mid-1960's a small group of IBM employees working at the
Manned Spacecraft Center
in Houston worked on a program called HASP (please see next section
for "How HASP got
its name") which eventually was made available as an FDP. Its
popularity and use expanded
such that by February 1971 IBM released HASP II Version 3.0 as a Type
III product with
Class A support. This HASP ran as an optional extension to OS/MVT,
performing the
peripheral functions associated with job processing. In March of
1973 IBM released the SVS
(i.e. OS/VS2 Release 1) operating system using a new version of HASP
referred to as
Version 4.0 HASP II Version 4.0 was not a System Control Program
(SCP). It was still
optionally available to replace OS/VS2 Release 1 readers and writers
and continued to be a
Class A service. With the availability of OS/VS2 Release 2 (MVS),
HASP's name was
changed to JES2.
On Mar 21, 2013, at 3:56 PM, Bob Rutledge wrote:
Day 1 was somewhat earlier than 1975. We installed HASP at CMU in
the preceding decade.
Bob
Staller, Allan wrote:
Maybe so, but JES2/HASP has done this since day 1 (circa 1975).
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