Forum Discussion
Altera_Forum
Honored Contributor
12 years ago --- Quote Start --- You need to assign some signals to global networks. I don't know CII well but I know that later families can't feed all the clock signals in a LAB from local routing; some of them have to come from global routing as well. Use the assignment editor to make the assignments, or google "Quartus assign global" to find examples of how it's done. Cheers, Adrian --- Quote End --- Thanks for your suggestion Adrian, how about Cyclone II clock, is it from crystal or from PLL, I'm abit confuse... thanks