File list (Check if you may need any files):
UsbKeyboard
...........\config.h
...........\Key.c
...........\KEY.H
...........\Key.LST
...........\Key.OBJ
...........\LED.h
...........\Main.c
...........\Main.LST
...........\Main.OBJ
...........\MyType.h
...........\PDIUSBD12.c
...........\PDIUSBD12.H
...........\PDIUSBD12.LST
...........\PDIUSBD12.OBJ
...........\REG54.H
...........\STARTUP.A51
...........\STARTUP.LST
...........\STARTUP.OBJ
...........\UART.c
...........\UART.h
...........\UART.ls1
...........\UART.LST
...........\UART.OBJ
...........\UART.SRC
...........\UsbCore.c
...........\UsbCore.h
...........\UsbCore.LST
...........\UsbCore.OBJ
...........\UsbKeyboard
...........\UsbKeyboard.hex
...........\UsbKeyboard.lnp
...........\UsbKeyboard.M51
...........\UsbKeyboard.opt.bak
...........\UsbKeyboard.plg
...........\UsbKeyboard.Uv2.bak
...........\UsbKeyboard.uvgui.Administrator
...........\UsbKeyboard.uvgui_Administrator.bak
...........\UsbKeyboard.uvopt
...........\UsbKeyboard.uvproj
...........\UsbKeyboard_Opt.Bak
...........\UsbKeyboard_Uv2.Bak
...........\UsbKeyboard_uvopt.bak
...........\UsbKeyboard_uvproj.bak