On Thu, Feb 11, 2016 at 10:14 AM, Walt Farrell <[email protected]>
wrote:

>
> Why would it imply that? Those are all z/OS software constructs or
> limitations, not anything to do with the hardware as far as I know. They're
> already possible with today's zArchitecture, if z/OS wanted to
> allow/implement them.
>

​right. 64 bit z/Linux​ already allows execution above the 2 GiB limit
imposed by z/OS (and z/VSE, z/VM ??). Also, z/Linux does not have the
"bar". It has a "line" between < 2GiB (31 bit) and >= 2GiB (64 bit) because
it never had the "bit 0 is a flag bit" problem.



>
> Of course, the scrunched PSWs are also for application compatibility, so
> doig away with them would be a big change for everyone, not just z/OS.
>
> --
> Walt
>
>

-- 
The man has the intellect of a lobotomized turtle.

Maranatha! <><
John McKown

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