Honored Contributor
Honored ContributorTypically you will make a top level file contain the sopc instance as well as your own logic tied to your own pinout. Say you add a UART interface: when you regenerate your sopc image you need to open your top, add the addtional signals from the large sopc generated file instance to the instantiation as well as add the pins to your top to route the new signals from sopc to the outside world
sopc builder has no concept of what your pinout looks like or what your signal names are in your top level design. additionally as a debug tool, I have at some times placed PIO blocks in the hardware and tied status lines from various sopc generated modules to them to give the nios a place to check status on various signal states - this is done by hand in the top level...
