Hi, there:
My clock is 40MHz, but I have complicated FFT operations and other DSP stuff. The longest path is 25.8ns, though after I set the constraints at
23ns...Previously it was 27.5ns at constraints of 25ns...What may I do now? How far can over constraining go? The source codes are from other people so I can't change a lot of it.
Besides -opt_mode Speed in XST, what else controls can I use in ISE6.1?
Does Synplify optimize for speed? How does it compare with XST?
Kelvin