Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!tut.cis.ohio-state.edu!purdue!bu-cs!xylogics!world!madd From: madd@world.std.com (jim frost) Newsgroups: comp.lang.asm370 Subject: Fractured Descriptions in _Principles of Operation_ Message-ID: <1989Oct25.205118.144@world.std.com> Date: 25 Oct 89 20:51:18 GMT References: <8910251508.AA29374@brazos.rice.edu> Reply-To: madd@std.com Distribution: inet Organization: Software Tool & Die Lines: 16 In article <8910251508.AA29374@brazos.rice.edu> IBM 370 Assembly Programming Discussion List writes: |If you already know about machine-level programming, then probably the |best reference book for 370 machine-level is Principles of Operation. Yes and no. It's certainly the most accurate, but some of the instruction descriptions leave much to be desired. For example, if you happen to have POO (I always liked that abbreviation :-) handy, look up "TR" and see if you the description gives you any clue as to what the command is actually intended for. It's perfectly accurate, just not what you'd expect. TR is my favorite fractured description in POO; what's yours? jim frost software tool & die madd@std.com