How do I create a global bias positive region constraint?

A global bias positive region constraint acts as a magnet that can attract a group of nets and buses into a region during global routing. 

To create a global bias positive region constraint:

1. Select a net, group of nets, or a bus from the Navigator assistant. 
2. Click the Global Bias Setup icon on the Congestion Analysis assistant toolbar.
   The Global Bias Setup form displays.
3. Click the New button to create a new global bias constraint group.
   A group is created and assigned a name by default. The name can be a number in a series starting from GB00. Also, the net selected in the Navigator assistant appears in the Nets list.
4. Add or remove nets in the Global Bias Setup form.
5. To add a positive bias region, click the + Rectangles button.
6. Click and drag to draw a region in the heat map. The region created on the heat map is used as the coordinates for the bias area. 
   The bias area is automatically assigned  a name by default. The name can be a number in a series starting from vsrGlobalBias_AB_00 and is displayed in the Bias Areas list box. 
   The green + symbol in the Bias column indicates that it is a positive bias.
7. To see how the new constraint alters routing and congestion, click the ECO button in the Global Bias Setup form. 
   Alternatively, choose Global Route and ECO Congestion Analysis from the drop-down list.

Related Topics

How do I use global bias constraints to plan routing?

How do I create a global bias negative region constraint?

How do I create a global bias path constraint?

How do I create multiple global bias constraints for specific layers?

How do I correct a region created in error?