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Thread: Addressing mode of current Mainframe environment

  1. #1
    Expert Member
    Join Date
    Oct 2006
    Answers
    209

    Addressing mode of current Mainframe environment

    In COBOL we are having 2 types of addressing mode(24 bit or 31 bit) which can be specified in cmpile jcl PARM parameter. I am using CMANCOB2 or COBOL390 , how to identify which addressing mode it uses. What is the addressing mode that current Mainframe environment has?

    NOTe : [This question was asked by suresh kumar]


  2. #2
    Contributing Member
    Join Date
    May 2007
    Answers
    85

    Re: Addressing mode of current Mainframe environment

    The current z/OS operating system runs in 64 bit mode. In the past, any memory above the 24 bit limit was called "above the line". This now means between the 24 & 31 bit limits.
    "Above the bar" is now used to specify any memory that is above the 31 bit address limitations.

    kk


  3. #3
    Junior Member
    Join Date
    Dec 2007
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    2

    Re: Addressing mode of current Mainframe environment

    thanks you very much kk to given the good example


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