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OpenVMS,
originally called VMS (Virtual Memory System), was first
conceived in 1976 as a new operating system for the
then-new, 32-bit, virtual memory line of computers,
eventually named VAX (Virtual Address eXtension).
The
first VAX model, the 11/780, was code-named ‘‘Star’’,
hence the code name for the VMS operating system, ‘‘Starlet’’,
a name that remains to this day as the name for the
system library files (STARLET.OLB, etc.).
VMS
version X0.5 was the first released to customers, in
support of the hardware beta test of the VAX-11/780,
in 1977. VAX/VMS Version V1.0 shipped in 1978, along
with the first revenue-ship 11/780s.
OpenVMS
was designed entirely within HP and specifically within
the former Digital Equipment Corporation (DIGITAL).
Two of the principal designers were Dave Cutler and
Dick Hustvedt, though with a wide variety of other contributors.
OpenVMS
was conceived as a 32-bit, virtual memory successor
to the RSX-11M operating system for the PDP-11.Many
of the original designers and programmers of OpenVMS
had worked previously on RSX-11M, and many concepts
from RSX-11M were carried over to OpenVMS.
OpenVMS
VAX is a 32-bit, multitasking, multiprocessing virtual
memory operating system. Current implementations run
on VAX systems from HP and other vendors.
OpenVMS
Alpha is a 64-bit multitasking, multiprocessing virtual
memory operating system. Current implementations run
on Alpha systems from HP, and other vendors.
Work
to port OpenVMS to systems based on the Intel IA-64
architecture and specifically to the Itanium Processor
Family is presently underway.
For
more details on OpenVMS and its features, please read
the OpenVMS Software Product Description at: • http://www.compaq.com/info/spd/
OpenVMS
typically uses SPD 25.01.xx and/or SPD 41.87.xx. 2–1
General
Information
Additional
information on the general features of various OpenVMS
releases, release dates, as well as the development
project code names of specific releases, is available
at:
•
http://www.openvms.compaq.com/openvms/os/openvms-releasehistory.html
Additional
historical information—as well as pictures and a variety
of other trivia is available in the VAX 20th anniversary
book:
•
http://www.openvms.compaq.com/openvms/20th/vmsbook.pdf
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