Sir,

For TCBNOIRB, I'd suggest scanning thru an old APAR (OA19796) and perhaps
following 
on to some of the other related APAR's (please keep in mind, 'IRB'). 

For TCBFX, I'd suggest, OA16342 and related (please keep in mind,
'asynchronous').

>From the little I've used these flags, it's more a question of whom the
'setter/reset r'
is and obviously, what is being done. 


Kind Regards

Jim Thomas
617-233-4130             (mobile)
636-294-1014                (res)
j...@thethomasresidence.us (Email)

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@bama.ua.edu] On Behalf
Of David Cole
Sent: Friday, September 30, 2011 5:01 AM
To: IBM-MAIN@bama.ua.edu
Subject: TCBFX vs. TCBNOIRB

Can anyone tell me the difference in purpose or management between 
the TCBFX flag and the TCBNOIRB flag?

As far as I know they both are supposed to prevent the queuing of 
IRBs. In the IKJTCB macro they each are doc'd as follows:

>     TCBNOIRB EQU   X'40' - If on, IRBs will not be queued to this TCB.
@08A
>     *                      A program setting this flag MUST save its
>     *                      current value and restore that value either
>     *                      when that program can tolerate IRBs being
>     *                      queued or before the current RB terminates.


>     TCBFX    EQU   X'01' - PROHIBIT QUEUEING OF ASYNCHRONOUS EXITS FOR
>     *                      THIS TASK


So why do they both exist?


Thanks,

Dave Cole              REPLY TO: dbc...@colesoft.com
ColeSoft Marketing     WEB PAGE: http://www.colesoft.com
736 Fox Hollow Road    VOICE:    540-456-8536
Afton, VA 22920        FAX:      540-456-6658 

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html



-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.1809 / Virus Database: 2085/4526 - Release Date: 09/29/11

----------------------------------------------------------------------
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO
Search the archives at http://bama.ua.edu/archives/ibm-main.html

Reply via email to