DDR or DDR2 SDRAM controller

The simulation models are operational with ModelSim (using the optional simulation models to replace encrypted IP code). If part of it would run with Quartus simulator, you wouldn't get much information from it, cause you can't connect a RAM simulation model in Quartus. Without a model, the controller can't perform calibration phase. Although the DDR controller generally can be simulated in ModelSim, it's a rather longwinded, time consuming process. You need some patience to advance to operation phase in simulation run.