I have project that related ethernet and I build this project in eCos for DE2 Board Altera, but when I compile ethernet DM9000 Drive in Nios II Command Shell, I get error "pkgconf/io_eth_drivers.h: No such file or directory". I search in the internet but can't find. Can you help me? So, If you have file "io_eth_drivers.h" Can you share me? This errors: " if_dm9000.c:54:36: pkgconf/io_eth_drivers.h: No such file or directory if_dm9000.c:65:31: cyg/io/eth/netdev.h: No such file or directory if_dm9000.c:66:32: cyg/io/eth/eth_drv.h: No such file or directory " Thankyou so much!