RE: opsyn opcode in ibm bal

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Article #898

#898

From: "Steve Bacher ", Batchman
Date: Wed, 07 Jun 1989 11:46

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I've seen OPSYN used by at least one software vendor in a module that is
designed to assemble into a list of control block offsets.  It does this
by using OPSYN to redefine the DC and DS opcodes as macros and then calling
out an MVS control block mapping macro.  Each DC or DS in the MVS macro is
then processed by the vendor macro, which is able to do its thing because
the offset of each MVS field (which varies with software releases,
maintenance, etc.) is known at that point.  That's the only use I know of.

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!tut.cis.ohio-state.edu!ucbvax!draper.COM!SEB1525
From: SEB1525@draper.COM ("Steve Bacher ", Batchman)
Newsgroups: comp.lang.asm370
Subject: RE: opsyn opcode in ibm bal
Message-ID: <8906072305.AA29483@jade.berkeley.edu>
Date: 7 Jun 89 11:46:00 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: IBM 370 Assembly Programming Discussion List <ASM370%UCF1VM.bitnet@jade.berkeley.edu>
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