commit 223f1157a24f4a2fb79ce73f1e4bd17921324b99
author Tim Edwards <tim@opencircuitdesign.com> Tue Mar 23 13:14:24 2021 -0400
committer Tim Edwards <tim@opencircuitdesign.com> Tue Mar 23 13:14:24 2021 -0400
tree c32745a6fe00bd95cf7e6a352e2842c682a565ff
parent b9ffc1fd1cfc26cbca85a61c287ac799721f6e6a

Modified cifinput section of the magic tech file to always draw
type "pwell" in deep n-well P regions;  otherwise isolated bulk
nFET devices are not extracted correctly.

sky130/magic/sky130.tech

diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index 570b509..2d9527c 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -2286,6 +2286,11 @@
  layer pwell TAP
  and-not NWELL
 
+ # Always draw pwell in deep-nwell P-regions
+ layer pwell DNWELL
+ and-not NWELL
+ and-not NPNID
+
  layer dnwell DNWELL
  labels DNWELL