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NTVDM CPU has encountered an illegal instruction.

Discussion in 'Support' started by cgunhouse, Mar 3, 2010.

  1. cgunhouse

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    I typed in the following and hit return:

    m:\otpt

    And got the following dialog box titled "16 bit MS-DOS Subsystem":

    TCC Prompt - m:\otpt
    The NTVDM CPU has encountered an illegal instruction
    CS:0e56 I:6d9c OP:ff ff bc 00 00 Choose 'Close' to terminate the application

    If I'm at the root of m drive and type "otpt" return to change directories the same thing happens.

    Strangely, "cd m:\otpt", "cd \otpt" and "cd otpt" work.

    One other thing, my m drive is an OpenVMS file share.


    Craig Gunhouse
     
  2. Charles Dye

    Charles Dye Super Moderator
    Staff Member

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    I doubt that has anything to do with Take Command; TC is not a DOS program! More likely, you have a file named OTPT.COM or OTPT.EXE in the root directory of your M: drive. Does your command work if you include a trailing backslash?
     
  3. cgunhouse

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    Yes, that was it OpenVMS uses .COM files like batch files and there was a OTPT.COM in the root directory.

    Thanks,

    Craig
     

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