I normally don't autoroute anything, but I'd like to try it on a board I'm working on. Problem is this board is 8 layers and my seat is limited to 6 layers. I'm thinking I can remove the layers where I have the power and gnd planes from the stack up and disable those nets in CM. Then add the layers back in after the routing has been done.
If this will work, how do I "lock" any existing traces I have routed to prevent the autorouter from moving them?
Tom I tell you, when you see what the specctra route editor can do you will be a convert.
I would like for you to try this.
Click edit route mode, use your middle scroll wheel on your mouse to kind of draw a box to zoom in to some pins, now simply with your left mouse depressed draw a little box around say 4 pins that have nets attached.. You will see all the nets can be routed in one go, thats cool eh. Now while those nets are getting routed in right click and select "Gather Bus wires" and if your license allows it you will see some very neat stuff : )
Everything in specctra is so easy when you get the mechanics down. Things like selecting nets, pins, changing vias, wire width etc will more than likely have you asking yourself why bother doing it in Allegro : )
Here is a little pointer.. Say you are routing 4 traces in.. use the center mouse button or wheel button to pan as you route along.
Hope you have fun with it.. as boma pointed out it is a awesome tool.
Tom BTW you can also use Specctra to move Placed Parts or even place a packaged design prior to routing.