@Stefan Schippers @Tim Edwards Do you have any thoughts on the above questions ?

Please do not mix too many things together. If you want to run simulations and save to different files it is just better to use xschem to generate the netlist without ngspice commands, Then create a small ngspice file

test1.cir

containing a

.include netlist.spice

generated from xschem, add the

.control

section with the

tran

and

write

instructions and the input voltage source, and run ngspice directly on this. The simulation file should look something like this:

* test simulation
vvin vin 0 pwl
+ time1 value1
+ time2 value2
...
.control
  tran ....
  write results1.raw
.endc

.include /path/to/xschem/generated/netlist.spice

Of course the above small wrapper file can be generated with a script, you decide how to do that. The .include is at the end since xschem closes the netlist with

.end

. You run ngspice with:

ngspice -i test1.cir

In the above bash script I don't know exactly what you are doing, however I see you call xschem with the -l option that is a 'set debug file' option that should not be used unless you are debugging xschem itself. Also do not tag directly the people since many are very busy. Posts can be read and whoever has an answer will help.

"_the quoting hell event horizon"---_I'm going to have to remember that one!