Verilator

I looked at your tree file and some of the calculated levels seem incorrect. I don't see use of txsif_reg. Is that used? Are you using the --top-module option? If so I think that might be related.

Please try the git version. I didn't reproduce the error message, but did see an error in sorting the module order which could cause it, assuming you're using -y or --top-module.

I edited the tree file manually so it is likely I have accidentaly removed the txsif_reg module declaration. I checked it exists in the original file. The second tree file I sent you is a second take on the same task and the txsif_reg module is included.

I do use --top-module. I tried to access the git version but my Linux environment is inside a secure network and git is not allowed to access the given http address. Is it possible to pack the git version in a tar file and make it available somewhere where I can download from my PC and put it in the secure network as a normal tar file and built it inside the secure network?

Try the enclosed patch. For next time, perhaps you could download it via your home machine?

That seems to have solved the problem I was having. Many thanks for your prompt response.

In 3.703.