It is impractical to resynthesize a multi-million gate design to add just one inverter for small-sized ECOs. It is also not advisable to modify the netlist of millions of instances using a text editor. Typically, 85% of functional ECOs involve less than 20 gates, and for these small or replicated ECOs, using the global mode Automatic ECO is excessive and inefficient. GOF Debug offers users the flexibility to choose between GUI and Script mode for these smaller ECOs. Users can perform ECO by clicking on the schematic dynamically, as shown in the following example.
Figure 1: GUI ECO
Check GUI Mode Netlist ECO/Debug for detail
