Sven K

I am trying to use MIG to generate an interface for DDR memory on the Nexys4DDR board. I seems like I can´t get the system clock connected to the interface. When I run MIG I am supposed to assign sys_clk to a pin but non of these pins are the system clock pin that is being used in the XCF file for the board that Digilent have supplied. How do I connect the system clock to one of the pins that are possible to choose in MIG? Any ideas on what I am doing wrong? Sven