DOS Fn 440cH CL=45H: IOCTL Set Retry Iteration Count

                                                         Compatibility: 3.3+ 
 Expects: AX    440cH
          BX    file handle  (device or disk file)
          CL    45H
          CH    device category: 00H=unknown
                                 01H=COMn (DOS 3.3+)
                                 03H=console (screen + keyboard) (DOS 3.3+)
                                 05H=parallel printer (DOS 3.2+)
          DS:DX addr of a 16-bit word containing the desired number of
 Returns: AX    error code  if CF is set to CY
    Info: Sets the number of times the device driver is to try to send
          output to the device before assuming that the device is busy.

          DS:DX points to a 2-byte buffer that contains a 16-bit value
          specifying the desired number of retries.

   Notes: ■ This is used only for printer drivers that support
            "Output Until Busy".  See Device Requests and DvRq 10H.

          ■ This setting is system/global.  Before changing it, you should
            use fn 440CH 65H to obtain the current value.  Change it back
            before exiting.

See Also: Fn 44H (IOCTL)
          Fn 440cH (generic IOCTL for character devices)
          Fn 440cH 65H (query retry iteration count)
          Generic IOCTL Data Packets
          Device Drivers
          DOS Functions