Hi Everyone! I am testing magic with sky130 and everything is fine until I do LVS and PEX. I found good guidelines at
https://github.com/sgherbst/sky130-hello-world , however PEX is is only providing parasitic capacitances. The recipe I am using is:
# extract for PEX
select top cell
port makeall
ext2spice lvs
ext2spice cthresh 0.01
ext2spice rthresh 0.01 (this one gives an error: exttospice: integer value or "infinite" expected.)
ext2spice subcircuit on
ext2spice ngspice (this one does not work, suspect it should be ext2spice -f ngspice ...)
ext2spice -o $::env(PEX_FILE)
The layout is a buffer and should have a visible resistance at the output as shown below. Does anyone know how to do full RC extraction? Thanks!