AR# 53036

Description

When making changes to a custom peripheral in XPS, the top level ports and user logic do not change in the project.

Solution

XPS makes use of a caching scheme for peripheral netlists.  

Therefore, the project will need to be cleaned and re-compiled in order for the changes to take effect.

Follow these steps to apply changes made to custom peripherals:

1. Project -> Rescan User Repositories   (update custom pcores/peripherals)
    
2. Project -> Clean All Generated Files     (project netlists will be deleted and recompiled using new peripheral definitions)
    

In order to change the XST Options in XPS, please refer to (Xilinx Answer 52274)

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