Proton Basic W5100 Drive, Ping and Web Server

if You Want to drive W5100 with Basic Code, (Proton+ ide) you can download attach file. mcu is pic 18F4620 16Mhz.

But i can use socket per 2 Kb, i want to use only 1 socket 8kb , how to change memory maps? anybody know ? please write?
Proton_W5100.rar (12 KB)

What kind interface is for W5100?

SPI or Bus ?

Thank you.