File list (Check if you may need any files):
zlIP_51\App\Main.c
.......\...\main.h
.......\GloblDef\GloblDef.c
.......\........\GloblDef.h
.......\KeilC\A.BAT
.......\.....\ARP.lst
.......\.....\ARP.obj
.......\.....\etherif.lst
.......\.....\etherif.obj
.......\.....\Ex1
.......\.....\Ex1.hex
.......\.....\Ex1.lnp
.......\.....\Ex1.M51
.......\.....\Ex1.Opt
.......\.....\Ex1.plg
.......\.....\Ex1.Uv2
.......\.....\Ex1_Opt.Bak
.......\.....\Ex1_Uv2.Bak
.......\.....\GloblDef.lst
.......\.....\GloblDef.obj
.......\.....\icmp.lst
.......\.....\icmp.obj
.......\.....\IP.lst
.......\.....\IP.obj
.......\.....\LISA1.SDF
.......\.....\Main.ls1
.......\.....\Main.lst
.......\.....\Main.OBJ
.......\.....\Main.SRC
.......\.....\Main.__i
.......\.....\NetIf.lst
.......\.....\NetIf.obj
.......\.....\picture.bmp
.......\.....\RLT8019.DSN
.......\.....\RLT8019.PWI
.......\.....\RTL8019.lst
.......\.....\RTL8019.obj
.......\.....\TCP.lst
.......\.....\TCP.obj
.......\.....\TCPIPmem.lst
.......\.....\TCPIPmem.obj
.......\MCU\AT89X52.H
.......\Netif\ARP.c
.......\.....\ARP.h
.......\.....\etherif.c
.......\.....\etherif.h
.......\.....\RTL8019.c
.......\.....\RTL8019.h
.......\TCPIP\icmp.c
.......\.....\icmp.h
.......\.....\IP.c
.......\.....\IP.h
.......\.....\NetIf.c
.......\.....\NetIf.h
.......\.....\TCP.c
.......\.....\TCP.h
.......\.....\TCPIPmem.c
.......\.....\TCPIPmem.h
.......\App
.......\GloblDef
.......\KeilC
.......\MCU
.......\Netif
.......\TCPIP
zlIP_51