Is it possible to use ChipScope Pro to analyze a combinatorial design?
Yes. ChipScope has a core which can work asynchronously: the VIO core.
In your design, use ChipScope Generator (Follow the ChipScope User Guide at
to generate both ICON and VIO, and instantiate them in your combinatorial design.
The VIO has asynchronous inputs, which can be used to see the state of your asynchronous signals.