Article View: comp.lang.asm370
Article #634Re: New System/3x0 Instruction
From: Brian Eliot
Date: Sun, 17 Mar 1991 18:26
Date: Sun, 17 Mar 1991 18:26
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> Neil Rickert <rickert@CS.NIU.EDU> said: > >>Really? Ever heard of the MVS assists "OBTAIN LOCAL LOCK", "ADD FRR", >>etc.? > > Sure they are. But they are not considered System/3x0 instructions, and >are not documented in Principles of Operation. Rather they are considered >part of a microcode assist for MVS. I don't pretend to know what is considered to be a System/3x0 instruction given that the descriptions are scattered among so many manuals besides the Principles of Operation. But the MVS assists are described in GA22-7079 System/370 Assists for MVS SA22-7092 Assists for MVS/XA A bigger concern is the new architectural category added by ESA/390 oxymoronically defined as "architected but not described". Expanded storage and Move Page, which pre-date ESA/390, already fall into that category. ESA/390 adds to it things like ETR (Sysplex) and ICF (Cryptographic Facility) which in practical terms means such things will be confined to use by MVS alone. Brian Eliot Information Technology Services Rensselaer Polytechnic Institute
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Path: arc1-ca.pugleaf.net!utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!rpi!eliot From: eliot@aix01.aix.rpi.edu (Brian Eliot) Newsgroups: comp.lang.asm370 Subject: Re: New System/3x0 Instruction Keywords: MVS, ESA, instructions, assists, microcode Message-ID: <$2_=MK#@rpi.edu> Date: 17 Mar 91 18:26:58 GMT References: <9103171023.AA28323@ucbvax.Berkeley.EDU> <9103171404.AA01042@ucbvax.Berkeley.EDU> Distribution: inet Organization: Rensselaer Polytechnic Institute, Troy NY Lines: 26 Nntp-Posting-Host: aix01srv.aix.rpi.edu