Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Why am I getting straight blue or red lines in my wave?

RPada2
Beginner
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I did not get any error in simulation. But, I am getting blue and red lines in waveforms. What am I doing wrong?

1.JPG

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Abe
Valued Contributor II
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It seems as though none of the inputs - clock ,start, clear are being driven in the design simulation. Have you forced any value to the inputs? If you have written a test bench , make sure you have driven all the inputs to known values. Failure to do so may lead to unwanted values / X in the outputs.

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