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"I do not see the need why you would need a derived clock or why you would be obliged to steer logic directly from a clock signal."
Hi Sanmao,
Now I am really puzzled...
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What Sanmao is saying is that it is not considered good practice to use clock as data. If you connect a clock signal to the
data input (and not the clock) of a register, you are using clock as data. This is why Quartus might give you a warning. You said Quartus didn't let you, but we assume it was just a warning because it does let you.
As every good practice, there are times when it might make sense to ignore it. But in most cases you should not.
As Pletz asked, try to repost your BDF complete and at higher resolution, otherwise we can't see what you are trying to do.
Honored Contributor
