hi @Tim Edwards when I select the top level cell of a standard cell, there is a white box showing the actual cell boundary, how do I make my custom cells do that too? for context my custom cells are being misaligned after gds streamout in openlane

@Anderson Hsieh See https://open-source-silicon.slack.com/archives/C016H8WJMBR/p1597841404277400?thread_ts=1597817277.260000&cid=C016H8WJMBR

thanks, I tried it and the abutment box does show.

@Anderson Hsieh Just to be clear, you 1. added the

FIXED_BBOX

property 2. you created the lef and gds 3. you ran openlane 4. the cell does not appear at the correct coordinates

Yes, that’s what I did

Yes, it is supposed to be creating the GDS layer

prBoundary

in the position of

FIXED_BBOX

, and that is supposed to be a two-way operation. It should be able to read back the

FIXED_BBOX

property from the

prBoundary

in the GDS. There shouldn't be any misalignment. What sort of misalignment are you seeing? In LEF files, you might find it necessary to have the bounding box at the origin (for which you can use the

move origin

command).

i missed some stuff in the tech file, but it worked after adding

boundary

statements in cifinput and cifoutput