Hey Everyone, odd question: I was working in Magic when something happend (and I can’t undo it) and all there are a lot of DRC markers now, but no actual DRC errors.

drc why

comes up empty, but there are tons of markers. Can anyone tell me a) what I did wrong? b) how do I clear them? Attached is a screen shot.

I experienced the same, and I had very small DRC errors in the MOSFET p-cells. Not sure what I did to cause this. My workaround was to dive into the cells and fix by hand 😞

@Harald Pretl Thanks for your reply! So the small DRC error in one pcell caused a lot of DRC flags to show up?

What was the error? Is the parameterized cell generator producing it?

Nothing was shown by running

drc why

so I never knew the exact error and a lot of things have happend since then so I only vaguely remember what I guessed to fix it…I think it was a metal via overlap error?

Note that many parameterized cells add a minimum via contact which will, by itself, have a minimum metal area violation. It is expected that metal will be added to it in the parent cell, and that will resolve the DRC error, which will then disappear.

Yeah, I'm familiar with those....it's just odd that suddenly (when I wasn't editing a pcell) everything was flagged, but the DRC count was zero and drc why returned nothing.