Function 09h (9)         Print String

    Outputs a string of characters to the standard output device. Checks
    for Ctrl-Break (Ctrl-C).

       On entry:      AH         09h
                      DS:DX      Pointer to character string

       Returns:       Nothing

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    The function outputs a string to the standard output device, checking
    for Ctrl-Break and Ctrl-C.

       Notes:         The string must be terminated with a $ (dollar-
                      sign); the dollar-sign is not displayed. This
                      function is therefore not suitable for displaying
                      strings that include the dollar-sign character. All
                      other characters, including control characters, are
                      displayed.

                      If a Ctrl-Break or Ctrl-C is detected, an INT 23h is
                      generated following output.

                      To output a single character, see Function 02h.