bluesky96

Thanks for responding to my post, Mellroth - I'm using read /write function to communicate with the FPGA not DMA. Anyhow here is snap shot of my code. I have already checked sync between FPGA and Host and it's OK. Notice that performing test using 1000 bit with 10 different runs is OK but i need to increase the number of runs to 10000 run to obtain smooth probability of error (BER) curve and that's when the problem appears.

Hi, I'm working on project involves implementing on Xilinx Spartan 3E FPGA. I've completed the design, compiled it, then tested it and everything is OK. When I started writing the final results to my boss I encountered unusual problem. The percentage of LUT consumed by the design is 123% (5734 out of 4656). How is that possible? Again everything is working fine but how come the FPGA compiler reports that 123% of the LUT is used ?! Where did (5734-4656 = 1078) LUT come from?. Compilation report is attached. Thanks in advance. Compilation Report.txt

Hi, I'm using LabVIEW to implement on Spartan 3E FPGA. Tests of the design was okay but everytime the tests exceeds a certain amount of time the program stop executing and shows a the message "Error 1111: Release Semaphore called on a semaphore that was not currently acquired. " and then a VI called Spartan3E_ReadBigControlVI opens its frontal panel with prompt to enter a password???.Notice that i didn't use any semaphore functions. I'm using host target communication (Host VI and FPGA VI). PS. if the test does not take time ( small amount of data) the FPGA works fine but if i increase the amount of data the FPGA will start working but after a while the message and the VI mentioned above appears.