Int 2F Fn 7F04  - Prindir V9.0 - Set Lock Filename                         [P]

   AX = 7F04h
   CX:DX -> ASCIZ name of lock file

Return: AX = status
       0000h successful
       FFFFh invalid device number

See Also: AX=7F00h"PRINDIR",AX=7F01h"PRINDIR",AX=7F03h"PRINDIR"

See Also: AX=7F05h,AX=7F06h,AX=7F08h,AX=7F0Ah,AX=7F0Bh