Hi @Tim Edwards, the OSU standard cells in the gf180mcuC PDK I build following out conversation the other day have netlists which say they were extracted using magic (presumably at the time open_pdks was making the pdk) but the netlists call for FETs calles n/pmos_3p3, and I cannot find those in the libs.tech/ngspice folder. Do you kinow what is happening there?

Hello @Tom, So, the OSU cells were compiled with the model names matching

nmos_3p3

and

pmos_3p3

respectively. The model files found in the openlane flow follow a nomenclature of

nfet_03p3

and

pfet_03p3

respectively. We use the same models but different naming conventions at the moment (haven't gone back to fix yet). You may change the naming convention to the right one to allow proper simulation by navigating into the

libs.ref/gf180mcu_osu_sc_gp9t3v3/

and

libs.ref/gf180mcu_osu_sc_gp12t3v3/

directories and executing the following command for each:

find ./ -type f -exec sed -i -e 's/pmos_3p3/pfet_03p3/g' {} \; && find ./ -type f -exec sed -i -e 's/nmos_3p3/nfet_03p3/g' {} \;

Apologies for this discrepancy. The netlists should simulate correctly now with the model files found in the

libs.tech/ngspice/sm141064.ngspice

file.

Thank you very much for the explanation, @Landon Burleson

Actually, the model names are

nfet_03v3

and

pfet_03v3

. The naming convention was changed over time but I think is now stable.