On Fri, 15 Aug 2025 01:01:48 -0500 Jon Perryman <[email protected]> wrote:

:>On Thu, 14 Aug 2025 21:45:28 -0400, Joseph Reichman <[email protected]> 
wrote:

:>>Thru the initiator exec pgm=
:>>Linkx or attachx

:>Standard return conventions apply RMODE64 programs - BR R14.

Actually, the contents of R14 are not documented for AMODE 64 supervisor
assisted linkage.

24 bit - the return address.

31 bit - the return address with bit 32 set.

64 bit - undocumented. But the entry R15 is documented as indicating the amode
pf the calling program 

--
Binyamin Dissen <[email protected]>
http://www.dissensoftware.com

Director, Dissen Software, Bar & Grill - Israel

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