hi, I'm using ISE6.3.03i and ModelSim5.6. I have a disign whitch work in simulation "Post Translate" and "Post Map". But when I try to execute a simulation "Post Place And Route", resutl are strange. The delay between rising egde and a new data change the result of my simulation. Sometimes it's ok, and sometimes it's doesn't work. I try several delay but I don't understand why!!
My constraint file : clk = 160MHz offset in = 6.25ns offset out =6.25ns
thnaks for your answers.
Cédric