How to share signals on Avalon bus ?

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.. but everytime compilation is started the .ptf file is replaced by its original contents and any altered parameters are lost? Can I start compilation without this update process?[/b]

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Here&#39;s the trick that I use. What you are experiencing is two text editors competing to be the one that saves the PTF file last. One of the editors is SOPC Builder itself! It will save the PTF file on program exit.

Try this:

Assuming that SOPC Builder is running

1. File -> Browse Project Directory... This opens Windows Explorer for the project directory.

2. In SOPC Builder, press the Exit button to write the current PTF to disk and close SOPC Builder.

3. In Windows Explorer, sort by file type, double click on the PTF file (on my computer, this opens Notepad), edit the desired PTF setting, write the file, and exit Notepad.

4. Start SOPC Builder again.

Kerry