global clock lines

Hello Ariel:

Is it a clock going to both the ffs or is it a data line going from a Q output of one ff to the D input of the other? I guess it will be a clock going to both the FFs. This clock will have to be coming from a pin or a PLL, in the assignment editor, in the "To" field, you can bring in your PLL output node e.g. clk0 or clk1, or you can include the pin name in this field then in the "Assignment Name" you can choose "Global Signal" and in the "Value" field you can choose "Global Clock" and that will make your clock global.

I am not so sure about the later case when you want to make the Q output of one ff to the D input of the other ff a global clock, maybe you can find the wire connecting those two FFs from the node finder in the assignment editor and do the same as I described above for clock going into both the FFs.

cheers

surfsup