Int 21 Fn 24  - Dos 1+ - Set Random Record Number For Fcb                  [D]

   AH = 24h
   DS:DX -> opened FCB (see #1034)

Notes: computes the random record number corresponding to the current record
     number and record size, then stores the result in the FCB
   normally used when switching from sequential to random access
   not supported by MS Windows 3.0 DOSX.EXE DOS extender

See Also: AH=21h,AH=27h,AH=42h