Added a few DRC rules to the magic tech file that allow poly to
cross p-tap in a memory core cell, creating a parasitic p-varactor.
diff --git a/VERSION b/VERSION
index 6556349..84fda41 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.241
+1.0.242
diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index dd2c602..2250bf9 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -4152,7 +4152,8 @@
extend *psd *ndiff 290 "Butting tap length < %d (diff/tap.4)"
extend *nsd *pdiff 290 "Butting tap length < %d (diff/tap.4)"
width mvpdiffres 150 "MV P-Diffusion resistor width < %d (diff/tap.14a)"
- spacing alldifflv,var,varhvt,fomfill alldifflv,var,varhvt,fomfill 270 touching_ok \
+ spacing alldifflv,var,varhvt,corenvar,corepvar,fomfill \
+ alldifflv,var,varhvt,corenvar,corepvar,fomfill 270 touching_ok \
"Diffusion spacing < %d (diff/tap.3)"
spacing alldifflv,var,varhvt alldiffmv,mvvar 270 touching_illegal \
"LV to MV Diffusion spacing < %d (diff/tap.3)"
@@ -4361,7 +4362,6 @@
"poly contact spacing to P-diffusion < %d (licon.9 + psdm.5a)"
spacing ndc,pdc nfet,nfetlvt,pfet,pfethvt,pfetlvt,pfetmvt 55 touching_illegal \
-2x
"Diffusion contact to gate < %d (licon.11)"
spacing ndc,pdc scnfet,scpfet,scpfethvt 50 touching_illegal \
"Diffusion contact to standard cell gate < %d (licon.11)"
@@ -4401,9 +4401,9 @@
surround pdic/a *pdi 60 directional \
"P-diode overlap of N-diode contact < %d in one direction (licon.5c)"
- surround nsc/a *nsd 120 directional \
+ surround nsc/a *nsd,corenvar 120 directional \
"N-tap overlap of N-tap contact < %d in one direction (licon.7)"
- surround psc/a *psd 120 directional \
+ surround psc/a *psd,corepvar 120 directional \
"P-tap overlap of P-tap contact < %d in one direction (licon.7)"
surround mvndc/a *mvndiff,mvnfet,mvnfetesd,mvrnd 40 absence_illegal \
