And none of the below is an answer to my question: where are HLASM docs that
cover the ***HLASM*** (not PoP) changes since 2008?

Charles

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
Behalf Of John Gilmore
Sent: Tuesday, March 05, 2013 8:34 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Where current HLASM doc?

Tom Marchant wrote:

<begin extract>
AFAIK, Addressing modes, instruction formats and syntax for machine
instructions are documented in the Principles of Operation, not HLASM doc.
</end extract>

and this is the impoortant point that needs to be made here.

In, general, of course, there are interactions.  The formats of constants
defined in DC statements are, in fact and appropriately, defined in the
HLASM Language Reference.

In general, while machine-instruction formats are defined in the PrOp,
assembler-instruction formats are defined in the HLASM LR; and both are
needed to write an HLASM routine.  Tom's statement is thus entirely correct
but a little incomplete.

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