When I run the simulation, I get the following warning message: Please tell me what to do.
simulation
<Warning message>
Warning: Illegal value detected on input clock
Category: Simulation
tool:-
Device: Arria II
This message is a Warning when using DDR2 High Performance Controller with ALTMEMPHY on Arria II GX devices.
This message is harmless and can be safely ignored.
For details, please refer to the following Knowledge Database (KDB).
https://www.altera.com/support/support-resources/knowledge-base/solutions/rd06242012_874.html
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