Quick Question - How to event on multiple clocks rising edges?

Hi.

I think what you want to do is quite impossible with conventional digital logic.

I can give a very general idea.

If you know that one clock is faster than the other you can detect the moment in which one edge overcomes the other.

With a (dangerous) use of inverter delay you can then try to detect the delay between the edges.

However, I repeat, this is very difficult.

Hope some other reader can provide a better solution.