open-source-silicon.dev

<@U01819B63HP> regarding the need to fix antenna diodes in spice extraction (have to replace X0 to D0), do you know if there's an issue open on this already?

<@U016EM8L91B> are you aware of this? <https://skywater-pdk.slack.com/archives/C016HUV935L/p1615132453097400?thread_ts=1614942383.087400&amp;cid=C016HUV935L>

No, i did not file an issue. I think it is a netlist extraction issue. I don't know if replacing the leading 'X' with 'D' is the correct way to let simulation run or a wrapper subcircuiot (containing the diode) should be provided. <@U016EM8L91B> ?

<@U0172QZ342D>, <@U01819B63HP>:  I have a custom addition in open_pdks that adds a subcircuit definition for the diode.  It adds it to `sky130_fd_pr__model__r+c.model.spice` .  Probably this is all wrong to do and I should change the magic techfile to extract a "D" device and then fix the diode cells in the standard cell libraries.

By "all wrong" I don't mean that there is anything technically wrong with it.  It just seems unnecessary.

It would be nice to avoid patching extracted files or the pdk to get results