I am trying to do some analog simulations to test out my wor

Question

I am trying to do some analog simulations to test out my workflow for the sky130 kit but when I simulate wth transistors from the pdk it can t find the spice models I can find these models on my machine Is there a variable I need to set somewhere to point to these models Thanks in advance

Alexander Sheldon · Answer

Okay I think I fixed it getting models But now I get many of these errors

Alexander Sheldon · Answer

Undefined number mult Original line no 0 new internal line no 15026 Cannot compute substitute Original line no 0 new internal line no 15028 Undefined number mult Original line no 0 new internal line no 15028 Cannot compute substitute Copies=14909 Evals=20229 Placeholders=1862 Symbols=14610 Errors=590 Numparam expansion errors Run Spice anyway y n

Weston Braun · Answer

What set of instructions are you using for setting up everything

Alexander Sheldon · Answer

I used the video you posted above but then further modified the xschemrc file because it couldn t find the models Is this the issue you were discussing

Alexander Sheldon · Answer

I get the same issue with the examples

Alexander Sheldon · Answer

The above was all with ngspice 31 installed from with apt in ubuntu This seems to be fixed after installing from source from here <https github com imr ngspice>

Weston Braun · Answer

The setup process in that video works

Weston Braun · Answer

You should be making everything from source like it details I dont think any of the software in the ubuntu PPAs is up to date

Weston Braun · Answer

The issue I possibly observed was with the pre master branch from that repo I was only having that error after launching ngspice though no issues with xschem And it was fixed by switching to pre master 33 branch