This will save in routing time, thus allowing more iterations for a very efficient final layout. Channels at right angles to each other have to use different routing directions. MicroRoute will have a very difficult time routing this floorplan because we want channels at right angles to each other to route in the same direction. For highly congested channels, we may want to have MicroRoute route this channel first. To do this, we may have to create our own slice in this channel.
Slices are perpendicular to routes.
MicroRoute will assign this slice with the highest priority and create the rest of the slices based on this first slice. The channels are generated from the slices. Then change the width of the port to which the route belongs.