Int 21 Fn BF  O - Novell Netware, Alloy Ntnx - Log/lock Record (fcb)       [N]

   AH = BFh
   AL = flags
       bit 0: lock as well as log record
       bit 1: non-exclusive lock
   DS:DX -> opened FCB (see AH=0Fh)
   BX:CX = offset
   BP = lock timeout in timer ticks (1/18 sec) if AL nonzero
   SI:DI = length

Return: AL = error code (see AH=BCh)

Note:  this function was added in NetWare 4.6, but was removed some time prior
     to Advanced NetWare 2.15, and is no longer listed in current Novell
     documentation

See Also: AH=BCh,AH=C0h"NetWare",AH=C2h"NetWare"