DJ Delorie wrote:
Could you send me a sample board with this effect on it? I think
I intentionally leave such tracks alone (who knows what the user
was thinking), but the optimizer was built without the "autoroute"
flag in
Do you mean RF resonators etc.?
I don't know what I mean. If I knew, I'd know what to do with them
;-)
But yeah, RF-sensitive circuits, company logos, test patterns, test
points, those sorts of things.
I don't use PCB, but there are a couple of good reasons to eliminate
unwanted stubs:
1) they'll cause signal reflections, and so affect timing
2) if you're ever going to use the autorouter for IC layout, then
stubs/antennas are bad news. You can get charge build-up on the wire
during fabrication, which can potentially destroy transistors. These
would have to be marked as violations and fixed.
Evan
