Hello,
I am sorry users cannot modify CPU components in the Processor Expert. It is not supported. You can generate code and modify the generated code only.
You can disable the generating code by Processor Expert to avoid overwrite of your modification of the source code.
Navigate to the main menu Project, select Properties and in the Properties windows select Processor Expert options. Set Disable Processor Expert Changes to Yes. This option disables any changes of the generated code by Processor Expert.
Best Regards,
Marek Neuzil