File list (Check if you may need any files):
at89s52
.......\cmddefine.h
.......\firm
.......\firm.lnp
.......\firm.M51
.......\firm.Opt
.......\firm.plg
.......\firm.Uv2
.......\Firmware
.......\Firmware.hex
.......\Firmware.lnp
.......\Firmware.M51
.......\Firmware.plg
.......\main.c
.......\main.LST
.......\main.OBJ
.......\Program_Firmware
.......\Program_Firmware.lnp
.......\Program_Firmware.M51
.......\Program_Firmware.plg
.......\serial.c
.......\serial.h
.......\serial.LST
.......\serial.OBJ
.......\STARTUP.A51
.......\STARTUP.LST
.......\STARTUP.OBJ