<snip>Right that’s what I saw so in order to establish addressable you would do LARL RX,CSECTNAME</snip> Not if you care about a decent module. You should not need "addressability" to the start of the code. As Jim Mulder's post showed, the expectation is that AMODE 64 modules use relative/immediate instructions and do not need code addressability to the beginning of the CSECT. You might need addressability to the static data. The owner of an AMODE 64 program (whether it is RMODE 64 or not) is expected to know that it is AMODE 64 and is expected to know what to expect in input R15. I'm sure the team will properly update the doc to describe that the input R14 for AMODE 24 *and* AMODE 64 (not just AMODE 24) has bit 32 off. It follows that it can be used with BR and BSM. The system handles the case of an AMODE 64 program using BSM on the input R14 provided by the system, getting back to the system in AMODE 24. I believe many (most? all?) HLL's were not flexible enough to give their user the choice between returning via BR and BSM (unconditionally using BR), and that in turn necessitated making R14 work for BR from an AMODE 64 program. Peter Relson
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