Hi all, I have a GDS created in Klayout for

gf180mcuC

PDK (downloaded via volare) with simple content of 4resistors and 2bipolars (npn). I want to extract parasitic netlist from this GDS, but magic somehow ignores the npns. They are not part of the generated netlist. I have magic version 8.3.388 and using

load btha0

,

extract all

and

ext2spice -f ngspice -o btha0.spice

. Can you advice what I am doing wrong?

I believe you need to add a recognition layer to get bipolar devices to extract correctly in magic.

Thanks for hint, I have `DRC_BJT 127/5`` and

LVS_BJT 118/5

layers shown in Klayout, but these are not shown in magic.

Sorry, I was thinking about the sky130 process. @Tim Edwards Are bipolar transistors extracted in the magic tech file for gf180mcu (edit version 1.0.376-0-gf97df97)? I see the comment

#  pnp_WxL              BJT    (10x10, 5x5, 0.42x10, 0.42x5 emitter sizes)
#  npn_WxL              BJT    (10x10, 5x5, 0.54x16, 0.54x8, 0.54x4, 0.54x2)

but that’s the only place

pnp

or

npn

occur in the file. There’s

BJTDEF

that’s defined for calma in/out, but that’s the only place it’s used.

I have not added support for bipolar devices in the magic tech file.

Should I fill a github issue tracker? In what repository?

@MikeV: Sorry, I was out of town for a few days. Please post to the github tracker for open_pdks: https://github.com/RTimothyEdwards/open_pdks/.