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From: PERSHNG@YKTVMH.BITNET ("John A. Pershing Jr.")
Newsgroups: comp.lang.asm370
Subject: (none)
Message-ID: <8910251508.AA29374@brazos.rice.edu>
Date: 25 Oct 89 14:34:46 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: IBM 370 Assembly Programming Discussion List <ASM370%UCF1VM.BITNET@ricevm1.rice.edu>
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If you already know about machine-level programming, then probably the
best reference book for 370 machine-level is Principles of Operation.

Be sure to get the right version -- if you aren't using access registers
and all that jazz, then the ESA/370 PrincOps is total overkill.
Similarly, if you aren't using 31-bit addressing and/or the XA I/O
subsystem, then the 370/XA PrincOps is overkill.  For standard
programming in, e.g., the VM/SP or VM/HPO environment, S/370 PrincOps is
just fine (GA22-7000).

      John Pershing
      IBM Research, Yorktown Heights