Forum Discussion
Altera_Forum
Honored Contributor
12 years agoWhat clock frequency are you generating out of the PLL? If it's 'too high' I suspect the cut down version of ModelSim included with the Web Edition of Quartus won't simulate it.
This is indicative of behaviour I've seen when using PLLs generated for Cyclone IV devices (ALTPLL). It would quite happily simulate with output frequencies below 100MHz, but not over...