File list (Check if you may need any files):
2_89s52\send\send.c
.......\....\send.LST
.......\....\send.plg
.......\....\send.OBJ
.......\....\send
.......\....\send.Opt
.......\....\send.lnp
.......\....\send.M51
.......\....\send.hex
.......\....\send_Uv2.Bak
.......\....\send.Uv2
.......\....\send_Opt.Bak
.......\rcv\rcv.c
.......\...\rcv.Uv2
.......\...\rcv.plg
.......\...\rcv.LST
.......\...\rcv.OBJ
.......\...\rcv_Uv2.Bak
.......\...\rcv.Opt
.......\...\rcv.lnp
.......\...\rcv.M51
.......\...\rcv.hex
.......\send
.......\rcv
2_89s52