Hi @Tim Edwards, I got some errors when doing post layout simulation. The error is like:

Original line no.: 0, new internal line no.: 16625:
Mismatch: 12 formal but 21 actual params.
rbody=w;rbody=l;rbody=mult;rbody=2000.0;rbody=-1.00e-3;rbody=-1.00e-4;rbody=-2.02e-2;rbody=1.55e-1;rbody=4.61e-2;rbody=0.0347;rbody=-7.1e-3;rbody=17.23/w+2.318;
Original line no.: 0, new internal line no.: 16711:
Undefined number [vc1_body]
Original line no.: 0, new internal line no.: 16711:
Cannot compute substitute
Original line no.: 0, new internal line no.: 16715:
Undefined number [rend]
Original line no.: 0, new internal line no.: 16715:
Cannot compute substitute

I am not sure whether these errors are related to my

sky130_fd_pr__res_xhigh_po_2p85

. The related spice code in my extracted file is like:

.subckt sky130_asc_res_xhigh_po_2p85_1 Rin Rout VPWR VGND a_2148_115#
X0 Rin a_2148_115# VGND sky130_fd_pr__res_xhigh_po_2p85 l=7.88e+06u
X1 Rout a_2148_115# VGND sky130_fd_pr__res_xhigh_po_2p85 l=7.88e+06u
C0 VPWR a_2148_115# 0.17fF
C1 VPWR Rin 0.17fF
C2 Rin Rout 0.12fF
C3 VPWR VGND 2.31fF
C4 Rout VGND 1.26fF
C5 Rin VGND 0.78fF
C6 a_2148_115# VGND 2.70fF
.ends

Would you mind giving me some hints about this error? Thanks a lot!

This is an issue with the simulator and device models, not magic. What simulator are you using? How are you including the device models?

We used ngspice simulator. We included the device in our layout using magic, and then extracted the circuit’s spice file from the layout.

Yes, so how are you including the device?

using

.lib .../PDKs/open_pdks_1.0.310/sky130/sky130A/libs.tech/ngspice/sky130.lib.spice tt

Well, all that looks right. What version is ngspice?

ngspice 33

Ah. Make sure you're using ngspice-36.

Ok, thanks!

Why ngspice 33? I just checked farmshare server, we installed ngspice 36. Can you help me confirm again? @Xingyu Ni

I am now using ngspice 36 @Can Wang