<pin_constraints> <!-- For a given .blif file, we want to assign - the clk0 signal to the clk[0] port of the FPGA fabric - the clk1 signal to the clk[1] port of the FPGA fabric --> <set_io pin="clk[0]" net="clk0"/> <set_io pin="clk[1]" net="clk1"/> </pin_constraints>