Function 4406h (68-6)    IOCTL: Get Input Status
 
    Checks to see if the device or file is ready for input.
 
       On entry:      AH         44h
                      AL         06h
                      BX         Device or file handle
 
       Returns:
          (file)      AL         FFh      until EOF is reached
                                 00h      after EOF is reached
 
          (device)    AL         FFh      If device ready
                                 00h      If device not ready
 
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    This subfunction reports the input status of the device or file. AL
    returns FFh for ready and 00h for not ready (or end of file).

Seealso:


 44h 
 4407h