FAT 16  August 1984
  16 bit pointers (64K)

  11 pointers reserved.
    0,1 reserved. 
    FFF7h marks bad cluster.
    FFF8h-FFFh mark end of file fat chains.

  Theoretical support up to 2GiB or 4GiB drives.

  Support of different sector/cluster ratios.

  Best on drives < 256MiB because of sector/cluster ratio.

  Boot sector not backed up.

  Root directory has max of 512 entriees.
    Less if long filenames used (VFAT).
  
  Directory entry 32 bytes long.

  Maximum of 65524 files per partition.

  Fat 16 fully supported by Dos 3.31, all versions of Windows, and several
    other OSes.