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ravikumar_sri2001 · Posted: Sat Nov 20, 2004 3:06 am Post subject: AMODE=31, RMODE=ANY

Hi Gurus,

I have a COBOL program with attributes AMODE=31, RMODE=ANY.

The IBM manual says RMODE=ANY means "program can reside above or below 16 Meg line."

Can you please explain me in what situation the program will be loaded below the line, and in what situation the program will be loaded above the line ?.

Thanks,
Ravikumar.

kolusu · Posted: Sat Nov 20, 2004 8:36 am Post subject:

ravikumar_sri2001,

Please search before posting. check this link which explains in detail about Amode and Rmode

http://www.mvsforums.com/helpboards/viewtopic.php?t=543&highlight=amode

http://www.mvsforums.com/helpboards/viewtopic.php?t=1142&highlight=amode

http://www.mvsforums.com/helpboards/viewtopic.php?t=2361&highlight=amode

Hope this helps...

Cheers

Kolusu
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semigeezer · Posted: Sat Nov 20, 2004 12:16 pm Post subject:

The links provide some basic info on amode/rmode, but I don't see that they anwser the question of when the system decides to load an rmode(any) program below the 16M line. Its a question I've often wondered about too. Pardon me if I missed it though.

ravikumar_sri2001 · Posted: Mon Nov 22, 2004 4:18 am Post subject:

Kolusu,

I have gone thru the links you have given. As Semigeezer said , i could not find satisfactory answer for my question from those threads.

Thanks,
Ravikumar.

Mike Chantrey · Posted: Mon Nov 22, 2004 11:19 am Post subject:

My view of this is that it is not information that IBM give out in general; they just say "RMODE(ANY) can load the program either above or below the 16Mb line". What I believe they probably do in this case is always load above the line unless there is insufficient storage (e.g. due to region limits, other storage use etc.) in which case it will be loaded below the line. However, I don't think this is stated explicitly anywhere. You could possibly try loading multiple copies of an AMODE(ANY) module (with no REUS/RENT attributes to force seperate physical copies) and see if the private area above the line was filled first, then the private area below the line.