Honored ContributorHello to all.
i want simulate the fft megacore with modelsim. I use the fft_tb.v generated from megacore. the output alwas stay at fixed value (see picture). i do not understand.... Now the simulation works in RTL mode only. In gate level not working. The outputs are always at HIz. I attach the modelsim projects. just edit the runme.tcl with correct quartus path.
Honored ContributorIs it SIMU_GATE or SIMU_RTL you are simulating?
SIMU_GATE produces output with Quartus 14.0 + Modelsim 10.1eHonored ContributorTNX James.
I attach my simulation of SIMU_GATE with modelsim 64bit 10.2c. have you only launched the runme.tcl in the modelsim software, or have you used qartusII 14 for compilation?Honored ContributorI ran your script in modelsim. I shall attach a picture of the output in a mo. Ahh sorry it was the RTL I simulated, which worked fine. So it is the gate level that fails? Sorry misread your initial post.
Honored ContributorI get the same result as the last pic you posted (running script only). Only bottom bit of the output active all others tri-state :-(. Very odd!
Honored ContributorHonored ContributorOK now i resolved the problem.
I assigned incorrectly the size bus in my top level module. Now gate simulation works fine. TNX!!!!!!!!!!!!!!!Honored ContributorHi
I am new to megacore. I need to have FFT worked for my OFDM. I generated FFT code with the megacore. How can I stimulate the output with the Modelsim. I attached th tb_fft.vhd fft.vhd and fft.vho files to the project but it didnt work. Please helpHonored ContributorIn my first post i attach in a zip file (fft.zip)
You can view those files, in particular file "runme.tcl".
