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From: ralerche@LINDY.STANFORD.EDU ("Robert A. Lerche")
Newsgroups: comp.lang.asm370
Subject: Re: Does conditional COPY still look for member?
Message-ID: <9105022206.AA11217@ucbvax.Berkeley.EDU>
Date: 2 May 91 22:01:52 GMT
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Reply-To: IBM 370 Assembly Programming Discussion List
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This is an interesting point.  The COPY operation is applied during
pass 1 of an assembly, and simply redirects the input to a SYSLIB member.
Thus, there is no such thing as a "conditional COPY".  A consequence
of this is that a COPY is _not_allowed_ to be generated by MACRO.  If a MACRO
generates a COPY the error "IEV001 ... OPCODE NOT ALLOWED TO BE GENERATED"
results.

(To generate a COPY you have to "trick" the assembler by defining a SETC
symbol to be 'COPY' and using it in the opcode field.  If you just put
a COPY inside a MACRO definition the text of the copied member will be
placed _inside_ the definition.)