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Hi Tricky,
Thank you for your reply.
I am currently trying to compare the Real time performance of different kinds of high speed adders. See how they hold up against their theoretical performance. For this I will need propagation delay through my design. It is alright if it depends on other factors.
In short I need to find the time taken by the design to give my output after I give it an input.
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You need a TDC to measure the tiny propagation time. Fortunately, you can implement TDC function inside older altera FPGA, for example older than CycloneIV.
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