Re: gEDA-user: Autorouter issues...

[Harry Eaton <bumpelo@xxxxxxxxxxx>]

Vanessa Dannenberg wrote:

> The autorouter seems to work fine, except it does not appear to avoid polygons 
> as was originally thought.  Harry, is it strictly necessary to place the 
> "keepout workaround" polygons on *all* layers, or just on the four I'm 
> routing on?
>
>  
Really, you only need them on the routing layers. The autorouter will 
drop vias through polygons if it can get from one routable point to 
another in doing so, but if all routing layers have the polys, it's not 
possible. If you connect any of the polys to a net, then it becomes fair 
game for the autorouter to use it for routing that net. This is in fact 
the way you can get the autorouter to route to power and ground planes.

h.