On Fri, 10 Feb 2017 16:58:10 -0800, Charles Mills  wrote:

>[... CMS ...] It is more of a
>single-user terminal session than an OS. And yes, it no longer can be IPLed
>on the hardware, so a purist might say that disqualifies it as an operating
>system right there. What kind of operating system requires an operating
>system in order to run?
> 
Nowadays (or is it next year's model?), on the z, practically every one.
Nothing will run without the PR/SM hypervisor.

In the twilight of Sun Microsystems, Sine Nomine ported OpenSolaris
to z.  It required z/VM for various assists.

Decades ago, I ATTACHed a real printer to a CMS guest.  Didn't work.
CMS printer driver issues CP commands to what it assumes is a
virtual printer.  Grrr.  Don't know about Pipelines.

>Would not the proper phrase be "run independently of CP"? CMS is a component
>of z/VM; it can't be independent of z/VM, it *is* z/VM.

-- gil

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