I agree with you. I had to get some code going then.


On Sun, 25 May 2025, 10:03 pm Seymour J Metz, <[email protected]> wrote:

> None. My recollection is that SWA above the line came in with MVS/SP V2
> (MVS/XA) R2 - MVS/SP V3 (MVS/ESA) at the latest. Long before OS/390 and
> z/OS.
>
> --
> Shmuel (Seymour J.) Metz
> http://mason.gmu.edu/~smetz3
> עַם יִשְׂרָאֵל חַי
> נֵ֣צַח יִשְׂרָאֵ֔ל לֹ֥א יְשַׁקֵּ֖ר
>
>
>
> ________________________________________
> From: IBM Mainframe Discussion List <[email protected]> on behalf
> of Steff Gladstone <[email protected]>
> Sent: Sunday, May 25, 2025 6:09 AM
> To: [email protected] <[email protected]>
> Subject: SWAREQ
>
>
> External Message: Use Caution
>
>
> A couple of questions:
>
> 1.  At which release of z/OS did IBM move the JCT above the 16M line and
> initiate the use of SVA's?   We have a couple of installations at
> earlier releases and we want to make sure that the SWAREQ macro won't  fail
> there.
>
> 2. The macro IEFZB505 has two options for the keyword parameter LOCEPAX in
> unauthorized mode:  "YES" and "VR2".  When should either be used?
>
> Thanks,
> Steff Gladstone
>
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