File list (Check if you may need any files):
AT89S2051
.........\2051.Sch
.........\AT89S2051 source code
.........\.....................\1
.........\.....................\1.hex
.........\.....................\1.lnp
.........\.....................\1.M51
.........\.....................\1.Opt
.........\.....................\1.plg
.........\.....................\1.Uv2
.........\.....................\1_Opt.Bak
.........\.....................\1_Uv2.Bak
.........\.....................\89LV51.C
.........\.....................\89LV51.C.bak
.........\.....................\89LV51.LST
.........\.....................\89LV51.OBJ
.........\.....................\api.h
.........\.....................\STARTUP.A51
.........\.....................\STARTUP.LST
.........\.....................\STARTUP.OBJ