BOOLEAN
HalpIsOldStyleFloppy(
  IN  PUNICODE_STRING DeviceName
  );

Routine Description:

    This routine determines whether or not the given device is an old style
    floppy.  That is, a floppy controlled by a traditional floppy controller.
    These floppies have precedent in the drive letter ordering.

Arguments:

    DeviceName  - Supplies the device name.

Return Value:

    FALSE   - The given device is not an old style floppy.

    TRUE    - The given device is an old style floppy.