Unformatted text preview: Why did a rat’s nest line re-appear after I seem to have successfully made a trace connection? A: According to Larry Rinzel, “The OrCAD God is angry.” This is apparently a bug in OrCAD. It is not necessary to fix this, but it can be fixed as follows: Re-run the netlist, but put a check in the box that says “run ECO to layout”. After you do this, a window will open in layout asking if you want to import the changes. Click OK. Note that this will cause the null parts to re-appear, and your mounting holes to disappear. Q: In the exercise, I put in a via and later ran “cleanup”. Cleanup removed my via. What should I do? A: We are no longer using cleanup, so the problem is mute. Note also that, after experimenting with top-side traces and vias, they must all be removed anyway. The exercise as handed in is 1-sided (bottom) only!...
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- Winter '07
- Electronic design automation, DRC, dotted white rectangle, Auto DRC