On Wed, 5 Jan 2005 22:05:00 -0500 (EST), Stuart Brorson <[EMAIL PROTECTED]> wrote: > > > > > > > OTOH, I don't like the current layer arrangement in PCB, which > > > provides separate tabs for metal_top and GND_top (i.e. plane), and so > > > on. There should be one tab per layer & you should handle plane > > > vs. routing layer issues using positive and negative layers. > > > > You're talking about the layer groups. I think those exist just so > > you can have different nets be different colors, even when on the same > > physical layer. > > Perhaps. Even so, I don't think that different nets should be > different colors on the same layer. The focus of a layout program is > the board's layers, not the nets. Therefore, everything on the same > layer should be the same color.
but the default grouping highlights one of the more useful cases-- some nets (power and ground) need to be handled differently than others (signal). If you have the luxury of a multi-layer board, you're going to want to put them on other layers. Otherwise, it's a good reminder to route them differently. -- - Charles Lepple
