Function 4410h          Query IOCTL Handle                           DOS 5.0+

    Determines whether the specified IOCTL function is supported by
    the given device driver.

        Entry   AX = 4410h
                BX = Device handle
                CH = Device category:
                     | 01h   Serial device
                     | 03h   Console (screen)
                     | 05h   Parallel printer
                CL = Function (function 440Ch minor code):
                     | 45h   Set iteration count
                     | 65h   Get iteration count

        Return  Nothing (CF clear)
                or
                AX = Error code, if CF is set
                     | 01h Invalid function
                     | 05h Access denied

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    This function returns an error value of 1 (invalid function) if
    the device driver has no support for IOCTL functions, 5 (access
    denied) if the driver supports IOCTL functions but does not
    support the specified IOCTL.