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I am trying to run the lpddr4 example design simulation using Questa Intel Starter FPGA Edition-64 2024.3 and running into this error after "source msim_setup.tcl" command.
I am following the steps listed in the example design user guide https://www.intel.com/content/www/us/en/docs/programmable/817394/25-1/running-simulation.html
Qar project attached. Hope the example design can be extracted.
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Hi,
I regenerate the ED and no longer seen the error. But now running into another issue whereby the questasim will auto closed by itself.
I checked the transcript and this is the last line being captured
# Running constra
# SIMSF (ed_sim.emif_io96b_lpddr4_0.emif_io96b_lpddr4_inst.arch_emif_0.arch0_1ch_per_io.arch_0.gen_byte_conns[0].wrapper_byte.gen_used_byte.u_byte): Could not find Quartus installation - missing environment variable QUARTUS_ROOTDIR
This is my PC Environment Variables. I think the QUARTUS_ROOTDIR has already been set correctly.
Can you please help to look into this issue and tell what might went wrong? Appreciate for your support!
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Hello,
Maybe you can add the "%QUARTUS_ROOTDIR%\bin64" to your PATH variable.
Restart your PC then verify in command prompt by typing echo %QUARTUS_ROOTDIR%.
It should show the Quartus installation path.
If you have multiple Quartus version installed in your PC, you may need to add QUARTUS_ROOTDIR_OVERRIDE variable to set as default version.
Regards,
Adzim
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Hi,
This is how I setup the variable (added the bin64) but it doesn't works.
In the command prompt, it still pointing to the old Quartus version which has been already uninstalled. Now I only have one quartus installed in my PC.
Is my variable setup incorrect? Can you attach the correct setup for my reference?
Thank you!
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Hi Azmin,
Per your advice, I added to the "%QUARTUS_ROOTDIR%\bin64" to my PATH variable and restart the computer but still not solving the problem.
Why it always point to older Quartus version which no longer in my computer?
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Hello,
Can you try to add the variables in System variables?
You can add QUARTUS_ROOTDIR_OVERRIDE too in this case.
Regards,
Adzim
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Hello,
Did you manage to add the variable just what I mention in my previous comment?
Regards,
Adzim
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Hi Adzim,
Above steps didn't solve the problem. At the end, I managed to overcome the issue by editing the Registry Editor via regedit.
Thanks.
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I’m glad that your question has been addressed, I now transition this thread to community support. If you have a new question, feel free to open a new thread to get the support from Intel experts. Otherwise, the community users will continue to help you on this thread. Thank you.

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