Hello, I was getting this error when I created a symbol for my basic inverter and tried to simulate ...

Nitin Indukuri

02/14/2025, 7:01 AM

Hello, I was getting this error when I created a symbol for my basic inverter and tried to simulate with the symbol: I tried removing the symbol and just simulating with the sky130 devices directly in my testbench and the simulator works fine with no errors. I think this is a hierarchy error but I don't know how to fix it?

Stefan Schippers

02/14/2025, 11:28 AM

@Nitin Indukuri Please send the

inv_tb.sch

and the

inv.sch

inv.sym

that are used in the testbench

Nitin Indukuri

02/14/2025, 5:50 PM

Hello Stefan, here are my files

inv.sch inv_tb.sch inv.sym

Stefan Schippers

02/15/2025, 3:06 PM

@Nitin Indukuri do not use A' for inverter output. Use an allowed identifier, like Z

Stefan Schippers

02/15/2025, 3:13 PM

Corrected files:

inv.sym inv_tb.sch inv.sch

Stefan Schippers

02/15/2025, 3:13 PM

1.png

Stefan Schippers

02/15/2025, 3:17 PM

@Nitin Indukuri you do not have a correct xschemrc setup. if you do a 'q' on a selected symbol you must not see the full path of the symbol name. Read the docs here. Please read very carefully. You must understand how components lookup work. If you don't set correctly the search path xschem will use absolute paths of components in your schematic and this makes the whole thing not portable.

Nitin Indukuri

02/15/2025, 7:07 PM

Thank you so much, I was able to solve all my issues!

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