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I'm not English so I think I miss some subtlety in the words and I'm not sure I understand it correctly: the signals are coming from a fifo. Is it correct to say they're static? Or how can I manage it?
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Static = signals are not changing.
Dynamic = signals are changing.
In your case, the signals are dynamic, so you really need to design a data capture system. If you can figure out how to *simulate* a design where you capture data into RAM or SDRAM, then you can use that.
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I should have read it too quickly, I'll read it again and more carefully...
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Yes. At least you will see how to simulate a Qsys system.
In your case though, you need to start off simpler and simulate the external signals you are trying to capture, and the logic needed to capture them.
Of course, this is already implemented by SignalTap II, so perhaps you should spend a little more time understanding how to use that ...
Cheers,
Dave