R2 contains the techincal readout of the Deathstar.

--- [email protected] wrote:

From:         Peter Relson <[email protected]>
To:           [email protected]
Subject: Re: What does R2 contain on entry to an FRR created using IEAMSCHD
Date:         Tue, 21 Aug 2012 08:26:52 -0400

>This does not seem to be documented.

It would of course be good to do so.

>Also, are you implying that the schedule SRB service(be it IEAMSCHD or
>SCHEDULE)  initializes the FRRPARM with these two values (after 
establishing
>the FRR) and then zeroes them before passing control to the client SRB?

No, I am not implying that. Neither service establishes the FRR.
The FRR is established by the dispatcher just prior to giving the SRB 
control.
At establishment time the parm area is zeroes. If the conditions I 
mentioned
apply, then the additional information is stored. 

Peter Relson
z/OS Core Technology Design

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