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Altera_Forum's avatar
Altera_Forum
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15 years ago

ModelSim Timing Simulation Error : DFFEAS HOLD Violation

Hi everyone, I got a warning message when I tried to perform Gate Level Simulation in my design. It said like this : */DFFEAS HOLD high VIOLATION ON DATAIN WITH RESPECT TO CLK; Expected :...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

--- Quote Start ---

hi, there,...

what kind of information do you need?

how about simulation screenshot?

I create red circle in the picture as indicator warning location.

here I attach it.

thanks...

--- Quote End ---

Hi,

the message means that you have timing violation in your design. Go into your project and

have a look to your timing analysis results. I'm quite sure that you will find hold time violation in the results. You have to solve this timing violation in your design first.

Kind regards

GPK