Need help : implement Gigabit Ethernet

i fixed the problem with signal tap, i tried to watch all the signals in relation with ethernet but :

1) i have to recompile the design and that generate me a ...time_limited.sof, the one which is related with my .stp

2) when i run as -> nios 2 hardware with nios II 9.1 IDE after program the time-limited.sof that leave me the target processor pausing

OR i run the .sof then run as -> niosII hardware without problem but with incompatibility with teh .stp

for moment, i will take time to improve myself with sopc and soft (i.e. write on the lcd) before make new tests next week

if you have any advice, it will be very helpfull, thanks