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wow. do you understand the architecture of logic element? if no please read about it.
The 'CIN' cannot fed up with signal you provide. it is stored in configuration. Am I wrong?
So in you code the very first 'cin' is used in the 2nd LE and in the very last LE you have no 'cout'.
i can mistake but it seems you can use '1' or '0' on 'cin' in the very first LE in your chain. but you should provide code that syntethis tool can aware for such situation.
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Yes i know about it. i was trying to understand what is the best primitive to be used in Cyclone2 for the TDC.
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