Difficulty configuring xschem with ngspice

Schematic circuit editor for VLSI and Mixed mode circuit simulation.

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Difficulty configuring xschem with ngspice

Forum: General Discussion

Creator: Amogh Purohith

Created: 2025-01-06

Updated: 2025-01-07

Amogh Purohith - 2025-01-06

Hello,
I have been trying to setup my computer for an upcoming engineering project where I would like to use xschem, sky130 and ngspice. I have tried to setup this for almost 1 week following Stephan Schipper's tutorial. I want to do a simulation for the prebuilt test_nmos or test_inv provided at the welcome page of google/skywater pdk. I can't seem to figure out the problem. I get similar errors as shown in the image for all the test_xxx modules. Your assisstance is much appreciated.

Thank you,
Amogh

Last edit: Amogh Purohith 2025-01-06

Screenshot_20250106_212942.png

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- stefan - 2025-01-06
  
  The following video shows the procedure to run a sky130 test with xschem.
  
  use_xschem_with_sky130.mp4
  
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Amogh Purohith - 2025-01-07

Please find the requested file attached below. I ran the simulation after
viewing your video and I think the file would be already overwritten.

Last edit: Amogh Purohith 2025-01-07

test_nmos.spice

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Amogh Purohith - 2025-01-07

Thank you Stefan. My setup is now working and I am able to simulate wavesforms.

Sincerely,
Amogh

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