Tweaked the fill pattern slots operators to ensure a maximum fill
density on a clear area that is less than the specified DRC
maximum. For M5, increased the fill shape size to exceed the
specified DRC minimum---this rule may need further tweaking.
diff --git a/sky130/magic/sky130.tech b/sky130/magic/sky130.tech
index 93a8df9..bf67343 100644
--- a/sky130/magic/sky130.tech
+++ b/sky130/magic/sky130.tech
@@ -1890,7 +1890,8 @@
templayer obstruct_li_coarse allli,allpad,obsli,lifill,fillblock,fillblock4
grow 3000
templayer lifill_coarse topbox
- slots 0 2000 200 0 2000 200 700 0
+ # slots 0 2000 200 0 2000 200 700 0
+ slots 0 2000 350 0 2000 350 700 0
and-not obstruct_li_coarse
and topbox
shrink 995
@@ -1930,7 +1931,8 @@
templayer obstruct_m1_coarse allm1,allpad,obsm1,m1fill,fillblock,fillblock4
grow 3000
templayer met1fill_coarse topbox
- slots 0 2000 200 0 2000 200 700 0
+ # slots 0 2000 200 0 2000 200 700 0
+ slots 0 2000 350 0 2000 350 700 0
and-not obstruct_m1_coarse
and topbox
shrink 995
@@ -1981,7 +1983,8 @@
templayer obstruct_m2 allm2,allpad,obsm2,m2fill,fillblock,fillblock4
grow 3000
templayer met2fill_coarse topbox
- slots 0 2000 200 0 2000 200 700 350
+ # slots 0 2000 200 0 2000 200 700 350
+ slots 0 2000 350 0 2000 350 700 350
and-not obstruct_m2
and topbox
shrink 995
@@ -2032,7 +2035,8 @@
templayer obstruct_m3 allm3,allpad,obsm3,m3fill,fillblock,fillblock4
grow 3000
templayer met3fill_coarse topbox
- slots 0 2000 300 0 2000 300 700 700
+ # slots 0 2000 300 0 2000 300 700 700
+ slots 0 2000 350 0 2000 350 700 700
and-not obstruct_m3
and topbox
shrink 995
@@ -2085,7 +2089,8 @@
templayer obstruct_m4 allm4,allpad,obsm4,m4fill,fillblock,fillblock4
grow 3000
templayer met4fill_coarse topbox
- slots 0 2000 300 0 2000 300 700 1050
+ # slots 0 2000 300 0 2000 300 700 1050
+ slots 0 2000 350 0 2000 350 700 1050
and-not obstruct_m4
and topbox
shrink 995
@@ -2137,7 +2142,8 @@
templayer obstruct_m5 allm5,allpad,obsm5,m5fill,fillblock
grow 3000
templayer met5fill_gen topbox
- slots 0 3000 1600 0 3000 1600 1000 100
+ # slots 0 3000 1600 0 3000 1600 1000 100
+ slots 0 5000 1600 0 5000 1600 1000 100
and-not obstruct_m5
and topbox
shrink 1495
