On Tue, 17 Jan 2023 13:19:41 +0000, Peter Relson  wrote:

>As the ISV's have been aware for years, z/OS is working to reach the goal of 
>allowing the ASCB to be above 16M to ...
>
Underreaching.

> At some point after that, it might be made the default.
>
Might it even, at some point in the far future, it be made not optional but 
compulsory?
Forking the design multiplies the maintenance burden.

>    ...SAM24/SAM31 (which, if used, would have happened to avoid the coding 
> error).  
>
If any control block or code involves 24-bit addresses with flags or noise in 
the top byte.
that must be remedied prior to moving the ASCB.  SAM24/SAM31 or "N 
R,=A(X'00FFFFFF') is a
digression from the ultimate goal, counterproductive.

-- 
gil

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