diff --git a/VERSION b/VERSION
index 9191d21..6556349 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.0.240
+1.0.241
diff --git a/sky130/custom/sky130_fd_io/gds/sky130_ef_io.gds b/sky130/custom/sky130_fd_io/gds/sky130_ef_io.gds
index c2bc16b..a8da398 100644
--- a/sky130/custom/sky130_fd_io/gds/sky130_ef_io.gds
+++ b/sky130/custom/sky130_fd_io/gds/sky130_ef_io.gds
Binary files differ
diff --git a/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vccd_lvc_clamped3_pad.lef b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vccd_lvc_clamped3_pad.lef
index a72c379..d42f502 100644
--- a/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vccd_lvc_clamped3_pad.lef
+++ b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vccd_lvc_clamped3_pad.lef
@@ -14,10 +14,6 @@
       LAYER met4 ;
         RECT 0.000 51.090 75.000 54.070 ;
     END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 51.090 1.270 54.070 ;
-    END
   END AMUXBUS_A
   PIN AMUXBUS_B
     DIRECTION INOUT ;
@@ -26,10 +22,6 @@
       LAYER met4 ;
         RECT 0.000 46.330 75.000 49.310 ;
     END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 46.330 1.270 49.310 ;
-    END
   END AMUXBUS_B
   PIN VCCD_PAD
     DIRECTION INOUT ;
@@ -76,18 +68,10 @@
     END
     PORT
       LAYER met4 ;
-        RECT 0.000 45.700 1.270 46.030 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 49.610 1.270 50.790 ;
     END
     PORT
       LAYER met4 ;
-        RECT 0.000 54.370 1.270 54.700 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 34.700 1.270 38.150 ;
     END
   END VSSA
@@ -151,6 +135,26 @@
         RECT 0.000 62.050 1.270 66.500 ;
     END
   END VDDIO_Q
+  PIN VCCHIB
+    DIRECTION INOUT ;
+    USE POWER ;
+    PORT
+      LAYER met5 ;
+        RECT 73.730 0.100 75.000 5.350 ;
+    END
+    PORT
+      LAYER met5 ;
+        RECT 0.000 0.100 1.270 5.350 ;
+    END
+    PORT
+      LAYER met4 ;
+        RECT 73.730 0.000 75.000 5.450 ;
+    END
+    PORT
+      LAYER met4 ;
+        RECT 0.000 0.000 1.270 5.450 ;
+    END
+  END VCCHIB
   PIN VDDIO
     DIRECTION INOUT ;
     USE POWER ;
@@ -232,14 +236,6 @@
     END
     PORT
       LAYER met4 ;
-        RECT 73.730 173.750 75.000 197.965 ;
-    END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 173.750 1.270 197.965 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 23.800 1.270 28.450 ;
     END
   END VSSIO
@@ -336,32 +332,33 @@
         RECT 26.000 -0.035 36.880 0.000 ;
         RECT 38.380 -0.035 49.255 0.000 ;
       LAYER met4 ;
-        RECT 1.670 173.350 73.330 197.965 ;
+        RECT 1.605 173.350 73.825 197.965 ;
         RECT 76.470 173.750 85.935 197.965 ;
-        RECT 0.000 93.365 75.000 173.350 ;
+        RECT 0.965 93.365 75.000 173.350 ;
         RECT 1.670 67.600 73.330 93.365 ;
-        RECT 0.000 66.900 75.000 67.600 ;
+        RECT 0.965 66.900 75.000 67.600 ;
         RECT 1.670 61.650 73.330 66.900 ;
-        RECT 0.000 61.050 75.000 61.650 ;
+        RECT 0.965 61.050 75.000 61.650 ;
         RECT 1.670 55.800 73.330 61.050 ;
-        RECT 0.000 55.100 75.000 55.800 ;
+        RECT 0.965 55.100 75.000 55.800 ;
         RECT 1.670 49.710 73.330 50.690 ;
-        RECT 0.000 44.600 75.000 45.300 ;
+        RECT 0.965 44.600 75.000 45.300 ;
         RECT 1.670 39.150 73.330 44.600 ;
-        RECT 0.000 38.550 75.000 39.150 ;
+        RECT 0.965 38.550 75.000 39.150 ;
         RECT 1.670 34.300 73.330 38.550 ;
-        RECT 0.000 33.700 75.000 34.300 ;
+        RECT 0.965 33.700 75.000 34.300 ;
         RECT 1.670 29.450 73.330 33.700 ;
-        RECT 0.000 28.850 75.000 29.450 ;
+        RECT 0.965 28.850 75.000 29.450 ;
         RECT 1.670 23.400 73.330 28.850 ;
         RECT 75.000 23.800 85.935 28.450 ;
-        RECT 0.000 22.800 75.000 23.400 ;
+        RECT 0.965 22.800 75.000 23.400 ;
         RECT 1.670 17.350 73.330 22.800 ;
-        RECT 0.000 16.750 75.000 17.350 ;
+        RECT 0.965 16.750 75.000 17.350 ;
         RECT 1.365 12.500 73.635 16.750 ;
-        RECT 0.000 11.900 75.000 12.500 ;
+        RECT 0.965 11.900 75.000 12.500 ;
         RECT 1.670 6.450 73.330 11.900 ;
-        RECT 0.000 0.000 75.000 6.450 ;
+        RECT 0.965 5.850 75.000 6.450 ;
+        RECT 1.670 0.000 73.330 5.850 ;
       LAYER met5 ;
         RECT 0.000 168.730 75.000 197.965 ;
         RECT 0.000 98.265 8.670 168.730 ;
@@ -371,8 +368,7 @@
         RECT 0.000 34.800 75.000 34.805 ;
         RECT 2.870 16.250 72.130 34.800 ;
         RECT 2.565 13.000 72.435 16.250 ;
-        RECT 2.870 5.350 72.130 13.000 ;
-        RECT 0.000 0.100 75.000 5.350 ;
+        RECT 2.870 0.100 72.130 13.000 ;
   END
 END sky130_ef_io__vccd_lvc_clamped3_pad
 END LIBRARY
diff --git a/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vssd_lvc_clamped3_pad.lef b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vssd_lvc_clamped3_pad.lef
index 3c4dc69..747ffa8 100644
--- a/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vssd_lvc_clamped3_pad.lef
+++ b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__vssd_lvc_clamped3_pad.lef
@@ -14,10 +14,6 @@
       LAYER met4 ;
         RECT 0.000 51.090 75.000 54.070 ;
     END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 51.090 1.270 54.070 ;
-    END
   END AMUXBUS_A
   PIN AMUXBUS_B
     DIRECTION INOUT ;
@@ -26,10 +22,6 @@
       LAYER met4 ;
         RECT 0.000 46.330 75.000 49.310 ;
     END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 46.330 1.270 49.310 ;
-    END
   END AMUXBUS_B
   PIN VSSD_PAD
     DIRECTION INOUT ;
@@ -76,18 +68,10 @@
     END
     PORT
       LAYER met4 ;
-        RECT 0.000 45.700 1.270 46.030 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 49.610 1.270 50.790 ;
     END
     PORT
       LAYER met4 ;
-        RECT 0.000 54.370 1.270 54.700 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 34.700 1.270 38.150 ;
     END
   END VSSA
@@ -151,6 +135,26 @@
         RECT 0.000 62.050 1.270 66.500 ;
     END
   END VDDIO_Q
+  PIN VCCHIB
+    DIRECTION INOUT ;
+    USE POWER ;
+    PORT
+      LAYER met5 ;
+        RECT 73.730 0.100 75.000 5.350 ;
+    END
+    PORT
+      LAYER met5 ;
+        RECT 0.000 0.100 1.270 5.350 ;
+    END
+    PORT
+      LAYER met4 ;
+        RECT 73.730 0.000 75.000 5.450 ;
+    END
+    PORT
+      LAYER met4 ;
+        RECT 0.000 0.000 1.270 5.450 ;
+    END
+  END VCCHIB
   PIN VDDIO
     DIRECTION INOUT ;
     USE POWER ;
@@ -232,14 +236,6 @@
     END
     PORT
       LAYER met4 ;
-        RECT 73.730 173.750 75.000 197.965 ;
-    END
-    PORT
-      LAYER met4 ;
-        RECT 0.000 173.750 1.270 197.965 ;
-    END
-    PORT
-      LAYER met4 ;
         RECT 0.000 23.800 1.270 28.450 ;
     END
   END VSSIO
@@ -329,32 +325,33 @@
         RECT 26.000 -2.290 36.880 0.000 ;
         RECT 38.380 -2.290 49.255 0.000 ;
       LAYER met4 ;
-        RECT 1.670 173.350 73.330 197.965 ;
+        RECT 1.605 173.350 73.825 197.965 ;
         RECT 76.470 173.750 85.935 197.965 ;
-        RECT 0.000 93.365 75.000 173.350 ;
+        RECT 0.965 93.365 75.000 173.350 ;
         RECT 1.670 67.600 73.330 93.365 ;
-        RECT 0.000 66.900 75.000 67.600 ;
+        RECT 0.965 66.900 75.000 67.600 ;
         RECT 1.670 61.650 73.330 66.900 ;
-        RECT 0.000 61.050 75.000 61.650 ;
+        RECT 0.965 61.050 75.000 61.650 ;
         RECT 1.670 55.800 73.330 61.050 ;
-        RECT 0.000 55.100 75.000 55.800 ;
+        RECT 0.965 55.100 75.000 55.800 ;
         RECT 1.670 49.710 73.330 50.690 ;
-        RECT 0.000 44.600 75.000 45.300 ;
+        RECT 0.965 44.600 75.000 45.300 ;
         RECT 1.670 39.150 73.330 44.600 ;
-        RECT 0.000 38.550 75.000 39.150 ;
+        RECT 0.965 38.550 75.000 39.150 ;
         RECT 1.670 34.300 73.330 38.550 ;
-        RECT 0.000 33.700 75.000 34.300 ;
+        RECT 0.965 33.700 75.000 34.300 ;
         RECT 1.670 29.450 73.330 33.700 ;
-        RECT 0.000 28.850 75.000 29.450 ;
+        RECT 0.965 28.850 75.000 29.450 ;
         RECT 1.670 23.400 73.330 28.850 ;
         RECT 75.000 23.800 85.935 28.450 ;
-        RECT 0.000 22.800 75.000 23.400 ;
+        RECT 0.965 22.800 75.000 23.400 ;
         RECT 1.670 17.350 73.330 22.800 ;
-        RECT 0.000 16.750 75.000 17.350 ;
+        RECT 0.965 16.750 75.000 17.350 ;
         RECT 1.365 12.500 73.635 16.750 ;
-        RECT 0.000 11.900 75.000 12.500 ;
+        RECT 0.965 11.900 75.000 12.500 ;
         RECT 1.670 6.450 73.330 11.900 ;
-        RECT 0.000 0.000 75.000 6.450 ;
+        RECT 0.965 5.850 75.000 6.450 ;
+        RECT 1.670 0.000 73.330 5.850 ;
       LAYER met5 ;
         RECT 0.000 168.730 75.000 197.965 ;
         RECT 0.000 98.265 8.670 168.730 ;
@@ -364,8 +361,7 @@
         RECT 0.000 34.800 75.000 34.805 ;
         RECT 2.870 16.250 72.130 34.800 ;
         RECT 2.565 13.000 72.435 16.250 ;
-        RECT 2.870 5.350 72.130 13.000 ;
-        RECT 0.000 0.100 75.000 5.350 ;
+        RECT 2.870 0.100 72.130 13.000 ;
   END
 END sky130_ef_io__vssd_lvc_clamped3_pad
 END LIBRARY
diff --git a/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vccd_lvc_clamped3_pad.mag b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vccd_lvc_clamped3_pad.mag
index 33168eb..fdfa5bb 100644
--- a/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vccd_lvc_clamped3_pad.mag
+++ b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vccd_lvc_clamped3_pad.mag
@@ -126,6 +126,8 @@
 port 15 nsew power bidirectional
 flabel metal5 s 14746 12430 15000 13280 3 FreeSans 520 180 0 0 VDDIO_Q
 port 12 nsew power bidirectional
+flabel metal5 s 14746 20 15000 1070 3 FreeSans 520 180 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal5 s 14746 13600 15000 18590 3 FreeSans 520 180 0 0 VDDIO
 port 14 nsew power bidirectional
 flabel metal5 s 14746 3570 15000 4460 3 FreeSans 520 180 0 0 VDDIO
@@ -148,6 +150,8 @@
 port 15 nsew power bidirectional
 flabel metal5 s 0 12430 254 13280 3 FreeSans 520 0 0 0 VDDIO_Q
 port 12 nsew power bidirectional
+flabel metal5 s 0 20 254 1070 3 FreeSans 520 0 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal5 s 0 9140 254 10940 3 FreeSans 520 0 0 0 VSSA
 port 9 nsew ground bidirectional
 flabel metal5 s 0 6961 254 7610 3 FreeSans 520 0 0 0 VSSA
@@ -156,6 +160,8 @@
 port 17 nsew ground bidirectional
 flabel metal4 s 14807 2580 15000 3270 3 FreeSans 520 180 0 0 VDDA
 port 10 nsew power bidirectional
+flabel metal4 s 14746 0 15000 1090 3 FreeSans 520 180 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal4 s 14746 11240 15000 12130 3 FreeSans 520 180 0 0 VSSIO_Q
 port 18 nsew ground bidirectional
 flabel metal4 s 14746 4760 15000 5690 3 FreeSans 520 180 0 0 VSSIO
@@ -188,6 +194,8 @@
 port 16 nsew ground bidirectional
 flabel metal4 s 0 3550 254 4480 3 FreeSans 520 0 0 0 VDDIO
 port 14 nsew power bidirectional
+flabel metal4 s 0 0 254 1090 3 FreeSans 520 0 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal4 s 0 12410 254 13300 3 FreeSans 520 0 0 0 VDDIO_Q
 port 12 nsew power bidirectional
 flabel metal4 s 0 13600 254 18593 3 FreeSans 520 0 0 0 VDDIO
diff --git a/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vssd_lvc_clamped3_pad.mag b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vssd_lvc_clamped3_pad.mag
index f6be18e..b921206 100644
--- a/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vssd_lvc_clamped3_pad.mag
+++ b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__vssd_lvc_clamped3_pad.mag
@@ -1,7 +1,664 @@
 magic
 tech sky130A
 magscale 1 2
-timestamp 1636574685
+timestamp 1636578979
+<< error_s >>
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+rect 7279 3663 7365 3699
+rect 3499 443 3851 3495
+rect 3911 443 4263 3495
+rect 4323 443 4675 3495
+rect 4735 443 5087 3495
+rect 5147 443 5499 3495
+rect 5559 443 5911 3495
+rect 5971 443 6323 3495
+rect 6383 443 6735 3495
+rect 6795 443 7147 3495
+rect 7279 275 7315 3663
+rect 7329 275 7365 3663
+rect 7497 443 7849 3495
+rect 7909 443 8261 3495
+rect 8321 443 8673 3495
+rect 8733 443 9085 3495
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 << metal1 >>
 rect 6867 95 7067 195
 rect 5242 -7 5540 83
@@ -84,23 +741,19 @@
 rect 14746 1390 15000 2280
 rect 0 20 254 1070
 rect 14746 20 15000 1070
-use sky130_ef_io__lvc_vccdy_overlay  sky130_ef_io__lvc_vccdy_overlay_0
-timestamp 1636574685
-transform 1 0 0 0 1 0
-box 4185 -2184 17187 39586
 use sky130_fd_io__top_ground_lvc_wpad  sky130_fd_io__top_ground_lvc_wpad_1 $PDKPATH/libs.ref/sky130_fd_io/mag
-timestamp 1636165381
+timestamp 1636578624
 transform 1 0 0 0 1 -7
 box 0 0 15000 39600
+use sky130_ef_io__lvc_vccdy_overlay  sky130_ef_io__lvc_vccdy_overlay_0
+timestamp 1636577591
+transform 1 0 0 0 1 7
+box 4185 -2184 17187 39586
 << labels >>
 flabel metal4 s 14873 37925 14873 37925 3 FreeSans 520 180 0 0 VSSIO
 port 16 nsew ground bidirectional
 flabel metal4 s 127 37925 127 37925 3 FreeSans 520 0 0 0 VSSIO
 port 16 nsew ground bidirectional
-flabel metal3 s 10151 -7 14940 862 0 FreeSans 4000 0 0 0 VSSD
-port 17 nsew ground bidirectional
-flabel metal3 s 100 -7 4900 862 0 FreeSans 2000 0 0 0 VSSD
-port 17 nsew ground bidirectional
 flabel metal5 s 14746 9140 15000 10940 3 FreeSans 520 180 0 0 VSSA
 port 9 nsew ground bidirectional
 flabel metal5 s 14807 2600 15000 3250 3 FreeSans 520 180 0 0 VDDA
@@ -119,16 +772,18 @@
 port 15 nsew power bidirectional
 flabel metal5 s 14746 12430 15000 13280 3 FreeSans 520 180 0 0 VDDIO_Q
 port 12 nsew power bidirectional
-flabel metal5 s 14746 13600 15000 18590 3 FreeSans 520 180 0 0 VDDIO
-port 14 nsew power bidirectional
 flabel metal5 s 14746 20 15000 1070 3 FreeSans 520 180 0 0 VCCHIB
 port 13 nsew power bidirectional
+flabel metal5 s 14746 13600 15000 18590 3 FreeSans 520 180 0 0 VDDIO
+port 14 nsew power bidirectional
 flabel metal5 s 14746 3570 15000 4460 3 FreeSans 520 180 0 0 VDDIO
 port 14 nsew power bidirectional
 flabel metal5 s 0 13600 254 18590 3 FreeSans 520 0 0 0 VDDIO
 port 14 nsew power bidirectional
 flabel metal5 s 0 7930 254 8820 3 FreeSans 520 0 0 0 VSSD
 port 17 nsew ground bidirectional
+flabel metal5 s 0 20 254 1070 3 FreeSans 520 0 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal5 s 0 11260 254 12110 3 FreeSans 520 0 0 0 VSSIO_Q
 port 18 nsew ground bidirectional
 flabel metal5 s 0 5990 254 6640 3 FreeSans 520 0 0 0 VSWITCH
@@ -145,10 +800,10 @@
 port 12 nsew power bidirectional
 flabel metal5 s 0 9140 254 10940 3 FreeSans 520 0 0 0 VSSA
 port 9 nsew ground bidirectional
+flabel metal4 s 14746 0 15000 1090 3 FreeSans 520 180 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal5 s 0 6961 254 7610 3 FreeSans 520 0 0 0 VSSA
 port 9 nsew ground bidirectional
-flabel metal5 s 0 20 254 1070 3 FreeSans 520 0 0 0 VCCHIB
-port 13 nsew power bidirectional
 flabel metal4 s 14746 7910 15000 8840 3 FreeSans 520 180 0 0 VSSD
 port 17 nsew ground bidirectional
 flabel metal4 s 14807 2580 15000 3270 3 FreeSans 520 180 0 0 VDDA
@@ -163,8 +818,6 @@
 port 9 nsew ground bidirectional
 flabel metal4 s 14746 10874 15000 10940 3 FreeSans 520 180 0 0 VSSA
 port 9 nsew ground bidirectional
-flabel metal4 s 14746 0 15000 1090 3 FreeSans 520 180 0 0 VCCHIB
-port 13 nsew power bidirectional
 flabel metal4 s 14746 3550 15000 4480 3 FreeSans 520 180 0 0 VDDIO
 port 14 nsew power bidirectional
 flabel metal4 s 14746 9140 15000 9206 3 FreeSans 520 180 0 0 VSSA
@@ -175,6 +828,8 @@
 port 12 nsew power bidirectional
 flabel metal4 s 14746 1370 15000 2300 3 FreeSans 520 180 0 0 VCCD
 port 15 nsew power bidirectional
+flabel metal4 s 0 0 254 1090 3 FreeSans 520 0 0 0 VCCHIB
+port 13 nsew power bidirectional
 flabel metal4 s 14746 9266 15000 9862 3 FreeSans 520 180 0 0 AMUXBUS_B
 port 1 nsew signal bidirectional
 flabel metal4 s 14746 34750 15000 39593 3 FreeSans 520 180 0 0 VSSIO
@@ -197,8 +852,6 @@
 port 9 nsew ground bidirectional
 flabel metal4 s 0 5970 254 6660 3 FreeSans 520 0 0 0 VSWITCH
 port 11 nsew power bidirectional
-flabel metal4 s 0 0 254 1090 3 FreeSans 520 0 0 0 VCCHIB
-port 13 nsew power bidirectional
 flabel metal4 s 0 9922 254 10158 3 FreeSans 520 0 0 0 VSSA
 port 9 nsew ground bidirectional
 flabel metal4 s 0 11240 254 12130 3 FreeSans 520 0 0 0 VSSIO_Q
@@ -219,10 +872,12 @@
 port 1 nsew signal bidirectional
 flabel metal5 s 6339 32546 10468 33417 0 FreeSans 2000 0 0 0 VSSD_PAD
 port 2 nsew ground bidirectional
-flabel metal3 5463 -1758 9733 -648 0 FreeSans 4800 0 0 0 VCCD1
-port 19 nsew power bidirectional
-flabel metal3 237 -1714 4719 -658 0 FreeSans 4800 0 0 0 VSSD1
-port 20 nsew ground bidirectional
+flabel metal3 100 -1896 4900 -100 0 FreeSans 4800 0 0 0 VSSD1
+port 19 nsew ground bidirectional
+flabel metal3 5200 -1898 9851 -458 0 FreeSans 4800 0 0 0 VCCD1
+port 20 nsew power bidirectional
+flabel metal3 10151 -1902 14940 -112 0 FreeSans 4800 0 0 0 VSSD1
+port 19 nsew ground bidirectional
 << properties >>
 string LEFclass PAD POWER
 string FIXED_BBOX 0 0 15000 39593