The AUTO command activates the integrated Autorouter. If signal names are specified or signals are selected with the mouse, only these signals are routed. Without parameters the command will try to route all signals. If a "!" character is specified all signals are routed except the signals following the "!" character. The "!" character must be the first parameter and must show up only once.
AUTO ! GND VCC;In every case the semicolon is necessary as a terminator. A menu for adjusting the Autorouter control parameters opens if you select AUTO from the command menu or type in AUTO from the keyboard (followed by Return key).
When the Autorouter is started all Polygons are calculated.
A protocol file (name.pro) is generated automatically.
The Autorouter puts a rectangle around all objects in the board and takes the size of this rectangle as the routing area. Wires in the Dimension layer are border lines for the Autorouter. This means you can delimit the route area with closed lines drawn into this layer with the WIRE command.
In practice you draw the board outlines into the Dimension layer with the WIRE command and place the components within this area.
Signals defined with EAGLE's SIGNAL command, polygons, and wires drawn onto the Top, Bottom, and ROUTE2...15 layers are recognized by the Autorouter.
Objects in the layers tRestrict, bRestrict, and vRestrict are treated as restricted areas for the Top and Bottom side and for vias respectively.
If you want the Autorouter not to use a layer, enter "0" into the preferred direction field.
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