File list (Check if you may need any files):
jianpan
.......\I2C.LST
.......\I2C.OBJ
.......\I2C.bak
.......\I2C.c
.......\I2C.h
.......\PMAKEY
.......\PMAKEY.M51
.......\PMAKEY.Uv2.bak
.......\PMAKEY.hex
.......\PMAKEY.lnp
.......\PMAKEY.opt.bak
.......\PMAKEY.plg
.......\PMAKEY.uvgui.liupeng
.......\PMAKEY.uvopt
.......\PMAKEY.uvproj
.......\PMAKEY_Opt.Bak
.......\PMAKEY_Uv2.Bak
.......\STARTUP.A51
.......\STARTUP.LST
.......\STARTUP.OBJ
.......\keycode.LST
.......\keycode.OBJ
.......\keycode.bak
.......\keycode.c
.......\main.LST
.......\main.OBJ
.......\main.bak
.......\main.c
.......\main.h
.......\ps2.LST
.......\ps2.OBJ
.......\ps2key.LST
.......\ps2key.OBJ
.......\ps2key.bak
.......\ps2key.c
.......\ps2key.h.bak