hi all , all my designs are showing this issue . please help me out what is the basic problem coming out . @Stefan Schippers @Mitch Bailey @Krzysztof Herman @Mohamed Monem.

It is an issue with the path of the devices symbol. Make sure that xschemrc file include the correct path to the symbols You can check the path by clicking Q on any device then you will find the path icon at the top.

@Mohamed Monem path showing now is same as earlier so what to do now

What are the values of your

PDK_ROOT

,

PDK

, and

PDKPATH

variables?

In the directory where you want to start xschem create this minimal xschemrc file: PDK_ROOT should be changed according to the location where it is installed on YOUR system.

### change PDK_ROOT to point to **your** PDK installation!
set PDK_ROOT /home/schippes/share/pdk
#### change PDK to point to the process variant. (sky130A, sky130B, ...)
set PDK sky130A

#### path for xschem base symbols (ideal components, pins, labels etc) 
set XSCHEM_LIBRARY_PATH $XSCHEM_SHAREDIR/xschem_library

#### path for sky130 process specific symbols
append XSCHEM_LIBRARY_PATH :$PDK_ROOT/$PDK/libs.tech/xschem

@Stefan Schippers how to do this can you guide in detail

• Launch a command terminal shell •

cd

into a directory where you plan to start xschem

mkdir newdirectory
cd newdirectory

• start a text editor and create a new file named

xschemrc

• type the following text

#### change PDK_ROOT to point to **your** PDK installation!
set PDK_ROOT /home/schippes/share/pdk
#### change PDK to point to the process variant. (sky130A, sky130B, ...)
set PDK sky130A

#### path for xschem base symbols (ideal components, pins, labels etc) 
set XSCHEM_LIBRARY_PATH $XSCHEM_SHAREDIR/xschem_library

#### path for sky130 process specific symbols
append XSCHEM_LIBRARY_PATH :$PDK_ROOT/$PDK/libs.tech/xschem

• save and exit • start xschem:

xschem

@Stefan Schippers @Mohamed Monem hi , i have followed the steps as you said . but the way xschem earlier open it is not opening in the same way like top.sch is not there .i habe made my own simulation folder that is also missing .means all my designs . in library manager also paths are changed automatically which i am not able to understand .

the top.sch schematic will be opened on startup by adding this additional line to xschemrc:

set XSCHEM_START_WINDOW {sky130_tests/top.sch}

If you still don't see correctly your designs you need to provide more data. • Where is

pfet_01v8_lvt.sym

installed on the system? there should be a file installed under

.../pdk/sky130A/libs.tech/xschem/sky130_fd_pr

please provide the full pathname. • Where is

ammeter.sym

installed on the system? It should be in a devices/ directory under

.../share/xschem/xschem_library/devices

. Please provide the full pathname. If you answer the two above questions I can provide you to a correct xschemrc file. Also attach one of the .sch files that xschem does not display correctly. I will try to open on my system and see if there are problems with the file.