Critical Warning: Timing requirements for slow timing model timing analysis were not

Thanks a lot for your reply!

Now I upload my design .My design is about electron pair bond spectrometer . The design scheme is using FFT IP CORE to generate real parts and imaginary parts ,then stored in two FIFO,at last using UART to send to PC.At the begining ,the data from AD board ,I stored the data in one FIFO too.

The solution of the design's control is separated.The real part and imaginary part FIFO's empty and full controls the clock of the FFT, the ad data FIFO's empty &full controls the AD board's clock (in another way controls the data samlping),and the FIFOs ' used signal is used to reset FFT to start .

That's all ,for other more information please contact me .My email is hjwy111@yahoo.com.cn

Any Information or pointers to literature would be welcome.

The file is too big ,so I dived it into 3 to upload ,when using you must put them together.

Oh ,the most important is that the QUARTUS is 7.2,megacore 7.2,matlab 7.4.