Function 54h (84)        Get VERIFY Setting

    Returns the current state of the system VERIFY flag.

       On entry:      AH         54h

       Returns:       AL         00h     if VERIFY is off
                                 01h     if VERIFY is on

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    Function 54h returns in AL the current state of the system VERIFY
    flag. The VERIFY flag may be set by means of Function 2Eh, or via the
    DOS VERIFY command.