On 6 September 2013 15:39, Gord Tomlin <gt.ibm.li...@actionsoftware.com> wrote:

> The IPCS listing in that manual is just a sample, and I would not treat it
> as a guarantee that the ASIDs listed there will always be the ASIDs for the
> indicated address spaces. In fact, they differ from what I see on a z/OS
> system here.
>
> I like your "solid jello" analogy, but the jello becomes liquid well before
> x'1E'!
>
> I suspect that IBM's efforts at increasing parallelism in the IPL process
> have reduced the number of ASIDs that can be considered invariant. And it's
> probably time for a cautionary note from someone at IBM, rightly stating
> that relying on an ASID value is not an intended programming interface.

I'm curious about why you would want or need to know anything about
hard-coded ASIDs. What aspect of an application or even system program
makes it impossible to look up what it needs? (I realize you didn't
say you needed to do this, but something surely prompted your
question.)

Tony H.

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