16.9 Debugging Simulation Results

The NetlistViewer tool is useful for debugging the netlist when simulation results are complex or conflic with design constraints. This situation most often occurs when a flip-flop output feeds back into its input without a reset, preset, or clear signal. NetlistViewer helps verify that such a flip-flop configuration exists in the design.

To locate and view the flip-flops, perform the following steps:
  1. In the Design Flow window, click NetlistViewer .
  2. Zoom to locate the flip-flops.