Forum Discussion
Altera_Forum
Honored Contributor
8 years ago1. The "top" module concept is something that quartus needs, and make sense if you think about it. Consider your design as a PCB. If you have 3 chips, and not "top" PCB to put them on, they are not going to work, as they wont be connected to one another. So Quartus needs this top to build the design.
2. Write a new top level file that includes all 3.