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I am trying to replicate the example shown in Figure 36 of your document using "NCO megaCore 13.1 version" but every time I change the 'Desired Output Frequency' value, the Frequency Response plot never changed. I think the version 13.1 NCO has bugs. Have you tried version 13.1 Quartus? I noticed that you used version 12.1 sp1. I might need to use this version instead.
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I don't have 13.1 on the machine I am typing on now, I do on my machine at work, along with 14.0, so I'll take a look and write down the steps needed tomorrow.
What FPGA would you like me to target as an example?
Cheers,
Dave
Honored Contributor
