User Guide

Busses, as understood by the Autorouter, are connections which can be
laid as straight lines in the x or y direction with only a few deviations.
Busses are only routed if there is a layer with an appropriate preferred
direction.
RoutingPass
The actual routing pass is then started, using parameters which make a
100 % routing as likely as possible. A large number of vias are deliber
-
atelyallowedtoavoidpathsbecomingblocked.
Optimization
After the main routing pass, any number of optimization passes can be
made. The parameters are then set to remove superfluous vias and to
smooth the track paths. In the optimization passes tracks are removed
and rerouted one at a time. This can, however, lead to a higher degree of
routing, since it is possible for new paths to be freed by the changed
pathofthistrack.
The number of optimization passes must be specified before starting the
Autorouter. It is not possible to optimize at a later stage. Once the rout
-
ing job has been completed all the tracks are considered to have been
prerouted,andmaynolongerbechanged.
Any of the steps mentioned above may be separately activated or
deactivated.
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TheAutorouter