Steve

There is that pseudo-SRB mode state that Peter Relson talked about 18months ago.

Is your code recovery related? 


Rob Scott
Developer
Rocket Software
275 Grove Street * Newton, MA 02466-2272 * USA
Tel: +1.617.614.2305 
Email: [email protected]
Web: www.rocketsoftware.com

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Thompson, Steve
Sent: 16 December 2009 17:27
To: [email protected]
Subject: Re: PSATOLD = 0 when under "PRB" !?!?

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of 
Edward Jaffe
Sent: Wednesday, December 16, 2009 11:08 AM
To: [email protected]
Subject: Re: PSATOLD = 0 when under "PRB" !?!?

Thompson, Steve wrote:
> So the question that I have is, under what conditions can PSATOLD be 
> zero? From days gone by, this would seem to be some kind of
dispatching
> bug if this is not set prior to dispatching a program that is PRB
based.
>   

Our code uses PSATOLD=0 as a way to check whether we're in SRB mode.
<SNIP>

We have NO SRB code in this case. NONE, NADA, ZILCH.

But the code path taken is only done with PSATOLD = zero. 

There are two of us here who say this is impossible (I'm one). But here we are, 
and we have seen this at 1.7, 1.9, and 1.10 (that I know about).
And it is only here and there.

So there must be some other way for PSATOLD to be zero. And that's all I'm 
asking: SRB does it, what else does it? Do IRBs? Because we do use IRBs from 
time to time (we do use VTAM).

Regards,
Steve Thompson

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