File list (Check if you may need any files):
STC89C52+LC72131+LA1837+VDF
...........................\FM_C
...........................\FM_C.LST
...........................\FM_C.M51
...........................\FM_C.OBJ
...........................\FM_C.Opt
...........................\FM_C.Uv2
...........................\FM_C.c
...........................\FM_C.hex
...........................\FM_C.lnp
...........................\FM_C.plg
...........................\FM_C_Opt.Bak
...........................\FM_C_Uv2.Bak
...........................\PLL.H
...........................\STC.H
...........................\vdf.h