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MartinMaa's avatar
MartinMaa
Icon for Occasional Contributor rankOccasional Contributor
2 months ago

The FIFO has no output waveform

Hi, I am currently using Quartus Prime Lite 24.1 and the 10M02M153C8G device to implement an 8Kx9 SYNC FIFO. I generated the design directly using the IP CORE. Initially, my tests successfully produ...
Installation & Licensing
Platform
Simulation
RichardT_altera's avatar
RichardT_altera
Icon for Super Contributor rankSuper Contributor
31 days ago

There is a similar case reported by other users. You may refer to the solution provided in the following link:
https://community.altera.com/discussions/quartus-prime/warning---signal-not-found-in-vcd-error-message-with-quartus-prime-lite-edition-/311579

Here are a few troubleshooting steps you can try:
1. Try opening the project using a different version of Quartus and simulate it again.
(Please archive the project as a backup: Project > Archive Project)

2. Check if starting the new project from scratch helps resolve the issue.

3. Consider deleting the quartus2.qreg file.
The quartus2.qreg file stores user GUI settings and preferences. These preferences are not critical to the functionality of the software, so it is safe to delete the file. 
However, this will reset saved preferences such as window size/position, table column sorting/filtering, colors, etc.

4. You may also consider reinstalling Quartus to see if that resolves the issue.


Additionally, I recommend simulating using the Questa simulator tool directly instead of the Simulation Waveform Editor (University Program WVF). As it is a legacy tool. 

Regards,
Richard Tan