>  I'm a bit puzzled about the original question.  Using addresses
> of things is fundamental to how computers work. 

Using addresses of addresses is not. The OP's question was why the parameter 
was an address of a word containing another address, rather than just taking 
that other address directly as a parameter.


--
Shmuel (Seymour J.) Metz 
http://mason.gmu.edu/~smetz3

________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of 
Steve Smith <sasd...@gmail.com>
Sent: Friday, August 16, 2019 9:15 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: LOCASCB STOKEN=

I'm a bit puzzled about the original question.  Using addresses of things
is fundamental to how computers work.  And as Binyamin said, if you can't
access it, it doesn't matter anyway.

However, it does load up the actual ASID if that option is used (and uses a
completely different linkage... given Jim's history lesson, not surprising).

It may be that this isn't really your program's problem.  A S0C4 is
appropriate for LOCASCB, and it may be for your program.  But if not, ESPIE
or ESTAE might work, although I'm not sure if they need memory for parms.
You'd have to trigger the S0C4 before LOCASCB does though.

sas

On Fri, Aug 16, 2019 at 5:51 AM Binyamin Dissen <bdis...@dissensoftware.com>
wrote:

> On Thu, 15 Aug 2019 22:40:08 -0400 Tony Harminc <t...@harminc.net> wrote:
>
> :>I'm a bit puzzled. This service takes a pointer to an STOKEN, and returns
> :>an ASCB address. ...  Is there a design reason the service takes a
> pointer rather than the
> :>STOKEN itself?

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