Unix on top of/in parallel with other operating systems

[Doug Gwyn]

In article <3276 at sun.uucp> guy at sun.uucp (Guy Harris) writes (>):
>> I have heard talk that UNIX is available (rumor only) as an OS for VM.
>It's called IX/370 and probably runs under VM, since UNIX is not the primary
>OS for IBM mainframes.

IX/370 indeed runs on VM/SP and can coexist with other IBM OSes
(e.g. CMS, MVS) on the same processor.  IX/370 is a fully-
supported product (which may actually mean something when IBM
is the vendor); it is an implementation of UNIX System V,
currently somewhere between UNIX System V Release 1 and Release 2,
with a few IBM enhancements.  Contact IBM for details.