Forum Discussion
CheepinC_altera
Regular Contributor
7 years agoHi,
As I understand it, you have some inquiries related to the FFT block behavior. To ensure we are on the same page, just would like to check with you on the following:
1. Mind further elaborate on the specific incorrect behavior that you are referring to? ie missing sample, missing SOP/EOP, corrupted output data and etc. Some screenshots will be helpful.
2. What is the Quartus version that you are using?
3. Sorry for any confusion, would you mind to further elaborate on the "hard floating point blocks" that you are referring to? Is it a parameter of the A10 FFT IP?
4. Mind share with me your .qsys of the FFT IP so that I can have a better understanding of your configuration.
5. Just would like to check with you if you are observing the issue in hardware or simulation? If it is hardware, would you mind to help performing a Modelsim simulation just to isolate any potential functional issue prior to hardware test.
6. If you observe similar issue with Modelsim simulation, mind share with me your simulation design together with steps to run and replicate the observation? This will be helpful for further debugging on my side.
Please let me know if there is any concern. Thank you.
Best regards,
Chee Pin
BP_S
New Contributor
7 years agoHi Chee Pin,
There are the answers to your queries
1) I am giving a single 2048 packet as input, a single 2048 packet output is expected. But the output has multiple sop and eop , the valid signal never goes down. The output data is also incorrect. Find the below screeshots
The input data i am givoing
The output i am getting
2) Quartus Prime pro 17.1.0
3) It is in the ip parameter editor gui
4) qsys is attached as a zip file
5) I am seeing this issue in hardware using signal tap.