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	Search For Another Answer
Topic	IP-DSP Horizontal
Last Updated	04/09/2009
Status	Archive

Description

Keywords: IFFT, CORE Generator, VEO, template, functional, LogiCORE, VSIM

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.

For more information, see (Xilinx Answer 22333).

Please see (Xilinx Answer 29209) for a detailed list of LogiCORE Fast Fourier Transform (FFT) Release Notes and Known Issues.