- open soclib_beta
- add ‘I/O Pin’ block to the top model
- follow the help text on the block mask to define the custom pin
- connect the inport/output to DUT, just like how you use other IO blocks.
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1734353/image.jpeg)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1734358/image.png)
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