Connecting Problem of UniPHY DDR2 Megawizard Pins to FPGA Pins

You are missing constraints from your project's settings file (.qsf). You need to run the appropriate .tcl file, from within Quartus, to fill out the .qsf, with parameters appropriate to the memory specified in your project.

From within Quartus, under 'Tools', click on 'Tcl Scripts...'.

Providing you've compiled your project once (which you must have done given the results you've posted), the window that comes up will populate itself with a number of tcl scripts appropriate to your project. These will include scripts for configuring your DDR2 memory pinouts and parameters. Running these will add the appropriate settings to your project, after which your project should complile more successfully.

Regards,

Alex