DOS Fn 4411H: IOCTL Query IOCTL Support for Device

                                                         Compatibility: 5.0+ 
 Expects: AX    4411H
          BL    drive number of device (0=default, 1=A, 2=B, etc.)
          CH    08H (device category: drive)
          CL    subfn number to query:
                  40H set device parameters   -- See 440dH 40H
                  41H write track             -- See 440dH 41H
                  42H format and verify track -- See 440dH 42H
                  46H set media ID            -- See 440dH 46H
                  60H get device parameters   -- See 440dH 60H
                  61H read track              -- See 440dH 61H
                  62H verify track            -- See 440dH 62H
                  66H query media ID          -- See 440dH 66H
                  68H sense media type        -- See 440dH 68H
 Returns: AX    error code  if CF is set to CY
    Info: This checks to see if certain IOCTL functions are supported for a
          particular block device.

          On return, if CF=NC=0, then the specified function IS supported.

          On return, if CF=CY=1, then the error code in AX indicates why
          the function is not supported:
               AX=0001 (invalid function): no support for IOCTL fns at all.
               AX=0005 (access denied): that fn (in CL) is not supported.

See Also: Fn 44H (IOCTL)
          Fn 440dH (generic IOCTL for block devices)
          DOS Functions