Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!MAINE.BITNET!MICHAEL
From: MICHAEL@MAINE.BITNET (Michael Johnson)
Newsgroups: comp.lang.asm370
Subject: Re: Dummy section assembler directives
Message-ID: <8906152258.AA05929@jade.berkeley.edu>
Date: 15 Jun 89 22:39:41 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: IBM 370 Assembly Programming Discussion List <ASM370%UCF1VM.bitnet@jade.berkeley.edu>
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In message <ASM370%89061400251931@OHSTVMA> Darrel Pawelka writes:

>the DXD and CXD assembler pseudo-codes. I am vaguely aware that they have some-
>thing to do with external dummy control sections. Would someone briefly des-
>cribe them for me, including the operands they take?                          -

I'm afraid I can't help you much with those, but..

>                                                     Also, would he or she des
>cribe the PUNCH assembler directive? Is it still used on machines without REAL
>card punchers?

The PUNCH directive is used to add a card to the object deck, i.e. to include
a line in the TEXT file generated by the assembler. These can be used to
put INCLUDE directives in a TEXT file that some linkage editors desire, for
example.

>     On another subject, the computer I use is an IBM 4381-12 running CMS, VM /
>SP ver. 4. Does this exclude the possibility that the system has anything to do
>with 370 / XA or / ESA?

The 4381 is not XA or ESA capable, to the best of my knowledge.