FFT block is not working when the hard floating point blocks are enabled?

Hi, Thanks for sharing the files and screenshots. Sorry as the screenshots are not very clear but I have tried my best to read the SOP/EOP signaling. As I understand it from screenshot #2, there are output data but seems like there are two SOPs. As for screenshot #3, there are two SOP or two EOPs within the same output packet. To further narrow down the issue, would you mind to perform a Modelsim simulation with the same FFT configuration as well as same data output? This will be helpful to have a golden comparison. Also, it can help to isolate any functional behavior prior to hardware testing. By the way, would you mind to attach a zip of the signaltap screenshots so that I can have a clearer view? Sorry for the inconvenience. Also, it would be great if you could further elaborate on the incorrect output data that you are referring to? Is it that you are comparing with a golden output but they are not matching? Thank you.