INT 21 - Novell NetWare - SYNCHRONIZATION SERVICES - LOG PHYSICAL RECORD
        AH = BCh
        AL = flags
            bit 0: lock as well as log record
                1: non-exclusive lock
        BX = file handle
        CX:DX = starting offset in file
        SI:DI = length of region to lock
        BP = timeout in timer ticks (1/18 sec)
                0000h = don't wait if already locked
Return: AL = status
            00h successful
            96h no dynamic memory for file
            FEh timed out
            FFh failed
Desc:   add the specified physical record to the log table, optionally locking
          it
Note:   this function is supported by NetWare 4.6+, Advanced NetWare 1.0+, and
          Alloy NTNX
SeeAlso: AH=BDh,AH=BEh,AH=BFh,AH=C2h,AH=D0h