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SimonT's avatar
SimonT
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3 months ago

NIOS V Sysnthesis Fails with Quartus 25.1 Lite

Hi, I used Quartus 23.1 Lite for a couple of months and have now switched to Quartus 25.1 Lite. Since the version update my NIOS V Plattform Designer Projects do not synthesize any longer. Synthesi...
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LiangYuG_Altera's avatar
LiangYuG_Altera
Icon for Occasional Contributor rankOccasional Contributor
2 months ago

Hi all,

Rather than Adding QSYS into project, please add QIP into the project. From 25.1std, the tool supports QIP only due to a change in Quartus compiler. 

The tool also prompts with message below. 

You may find a qip file located in the same folder of qsys system top level hdl file under project directory liking this.

*Copied from ERROR building simple NIOSV Compact project | Altera Community 

Regards,
Liang Yu

Broddo's avatar
Broddo
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1 month ago

LiangYuG_Altera​ Yes, this sorted the problem out for me. The project builds fine now. 

Can I ask if you know what the motivation for this change was? QIP files are generated output, it doesn't make a lot of sense to add what is essentially a temporary file as project member. The QSYS file is the source of truth of the design. In previous versions, Quartus would create the QIP file in the db directory (another temporary folder) during synthesis. As it no longer does this, one can end up accidentally including an outdated QIP file into the project (which I have just experienced and spent a while debugging until I realized the mistake).