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Altera_Forum's avatar
Altera_Forum
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14 years ago

Timing Critical Warning

Hi, During the code compilation, I get the following warning: "Critical Warning: The following clock transfers have no clock uncertainty assignment. Critical Warning: From clk (Rise) ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Add the following line to your .sdc:

derive_clock_uncertainty

(More recent versions of Quartus run this automatically...)