Description
Quartus® II software and IP version 10.0 reports mem_k and mem_k_n clock pair as unconstrained output ports because the SDC file generated by the megawizard is missing set_false_path constraint for the clock pair.
Add follwing constraint in the SDC file to fix the issue:
foreach { pin } [concat ] {
set_false_path -to [get_ports ]
}
This issue will be fixed in the next version of the Quartus II software and the IP.