Int 21 Fn 27  - DOS 1+ - Random Block Read From Fcb File                   [D]

   AH = 27h
   CX = number of records to read
   DS:DX -> opened FCB (see AH=0Fh)

Return: AL = status
       00h successful, all records read
       01h end of file, no data read
       02h segment wrap in DTA, no data read
       03h end of file, partial read
   [DTA] = records read from file
   CX = number of records read (return AL = 00h or 03h)

Notes: read begins at current file position as specified in FCB; the file
     position is updated after reading
   not supported by MS Windows 3.0 DOSX.EXE DOS extender

See Also: AH=21h,AH=28h,AH=3Fh