Corrected the spacing rule for local interconnect in core cells
(0.14um), and reverted back to the normal width and spacing rules
for coreli because the edge4way rules are unnecessary, and just
more confusing to the observer.
diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index bceb1fc..30234ac 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -5427,15 +5427,16 @@
width *li 170 "Local interconnect width < %d (li.1)"
width rli 290 "Local interconnect width < %d (li.7)"
- # Note: coreli width rule uses edge4way rule so as not to imply that
- # all li contact types can also be minimum width 0.14um.
- edge4way ~(coreli,pc,ndc,nsc,pdc,psc)/li coreli 140 coreli,pc,ndc,nsc,pdc,psc \
- 0 0 "Core local interconnect width < %d (li.c1)"
+ spacing *locali,rli *locali,rli,*obsli 170 touching_ok \
+ "Local interconnect spacing < %d (li.3)"
- # width coreli 140 "Core local interconnect width < %d (li.c1)"
+ # Local interconnect in core (SRAM) cells has more relaxed rules. There are
+ # no special layers for the contacts in core cells, so they must be included
+ # in the rule.
+ width coreli,pc,ndc,nsc,pdc,psc,lic 140 "Core local interconnect width < %d (li.c1)"
- spacing allli allli,*obsli 170 touching_ok "Local interconnect spacing < %d (li.3)"
- spacing coreli allli,*obsli 140 touching_ok "Core local interconnect spacing < %d (li.c2)"
+ spacing coreli,pc,ndc,nsc,pdc,psc,lic allli,*obsli 140 touching_ok \
+ "Core local interconnect spacing < %d (li.c2)"
surround pc/li *li,coreli 80 directional \
"Local interconnect overlap of poly contact < %d in one direction (li.5)"
