WORKING: DE2-115 Simple Socket Server

Hi to all :

this project is my goal currently, but, when i build the project, there're some errors .

Here are some problem to ask :

1. when create the new bsp , which .sopcinfo to use ?

(My board is de2-115 , ep4ce115f29c7n)

I download from "nios ii ethernet standard design example"

,choose the file named "niosii-ethernet-standard-3c120.zip"

2."with a file management tool (such as windows explorer), drag and drop all the nios ii simple socket server source files and folders from the

<tutorial_files>\nichestack_tutorial folder to the niosii_simple_socket_server_0 folder in the nios ii sbt for eclipse project explorer view." , I don't know where to copy .c .v etc. file .

plz help me ,

best regard !