File list (Check if you may need any files):
1820\1820_2\1820.c
....\......\1820.LST
....\......\1820.OBJ
....\......\1820_.txt
....\......\1820_1.asm
....\......\1820_1.LST
....\......\1820_2.asm
....\......\1820_2.Opt
....\......\1820_2.plg
....\......\1820_2.Uv2
....\......\1820_2_Uv2.Bak
....\......\1820_asm.asm
....\......\1820_asm.LST
....\......\1820_asm.OBJ
....\......\1820_c
....\......\1820_c.hex
....\......\1820_c.lnp
....\......\1820_c.M51
....\......\1820_c.Opt
....\......\1820_c.plg
....\......\1820_c.Uv2
....\......\1820_c_Opt.Bak
....\......\1820_c_Uv2.Bak
....\......\1820_net.Opt
....\......\1820_net.plg
....\......\1820_net.Uv2
....\......\1820_net_Uv2.Bak
....\......\1820程序.txt
....\1820_2
1820