On Thu, 2011-09-01 at 20:26 -0700, Russell Dill wrote: > >> Throwing out a crazy idea.. in word-processors etc.., "styles" are found > >> in a drop-down combo-box. I know that doesn't fit so well with where we > >> have space for the route-style selector, but just a crazy though. > >> > > > > One day, when we support an unlimited number of route styles. ;) > > > > Yes, 4 hardly seems like enough. Especially since many designs require > a different trace width based on the layer for the same signal.
For impedance reasons? I was also aware that you could also have different requirements for current carrying capacity - if different layers used different copper weights. There are also different DRC rules on certain objects on inner layers for some fabs IIRC. Perhaps this ought the be encompassed in a "smart" route-style which has different settings for different layers. That would make assigning one route-style to one net much more practical. You (and the auto-router) wouldn't have to switch styles when switching layers etc.. -- Peter Clifton Electrical Engineering Division, Engineering Department, University of Cambridge, 9, JJ Thomson Avenue, Cambridge CB3 0FA Tel: +44 (0)7729 980173 - (No signal in the lab!) Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)
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