AR# 11155: LogiCORE Fast Fourier Transform (FFT) v3.1 - I cannot find the Verilog behavioral simulation mode for the FFT. When performing a Verilog behavioral simulation an error occurs: "Error: (vsim-3033) ... The design unit was not found"
AR# 11155
LogiCORE Fast Fourier Transform (FFT) v3.1 - I cannot find the Verilog behavioral simulation mode for the FFT. When performing a Verilog behavioral simulation an error occurs: "Error: (vsim-3033) ... The design unit was not found"
I generate a FFT using the Verilog flow, and the VEO template file is created. However, I cannot find a Verilog simulation model. Why? Also, the following error occurs when I perform a Verilog behavioral simulation:
"Error: (vsim-3033) ... The design unit was not found"
Solution
The FFT does not have a Verilog behavioral model. The supported language for behavioral simulation is VHDL. If your simulator does not support multiple languages, you can work around this issue by generating a Verilog structural model with ISE 7.1i or above.