diff --git a/artix7/harness/basys3/swbut/design.bit b/artix7/harness/basys3/swbut/design.bit
index a06e67c..7296a39 100644
Binary files a/artix7/harness/basys3/swbut/design.bit and b/artix7/harness/basys3/swbut/design.bit differ
diff --git a/artix7/harness/basys3/swbut/design.json b/artix7/harness/basys3/swbut/design.json
index c7338b4..135bad9 100644
--- a/artix7/harness/basys3/swbut/design.json
+++ b/artix7/harness/basys3/swbut/design.json
@@ -1,7 +1,7 @@
 {
     "info": {
         "GRID_X_MAX": 58,
-        "GRID_X_MIN": 9,
+        "GRID_X_MIN": 10,
         "GRID_Y_MAX": 52,
         "GRID_Y_MIN": 0
     },
@@ -134,7 +134,8 @@
                 "LIOI3_X0Y11/LIOI_I1",
                 "LIOI3_X0Y11/LIOI_IBUF1",
                 "LIOI3_X0Y11/LIOI_ILOGIC1_D",
-                "L_TERM_INT_X2Y12/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y12/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y107/VBRK_EE2A2"
             ]
         },
         {
@@ -261,7 +262,8 @@
                 "LIOI3_X0Y11/LIOI_I0",
                 "LIOI3_X0Y11/LIOI_IBUF0",
                 "LIOI3_X0Y11/LIOI_ILOGIC0_D",
-                "L_TERM_INT_X2Y13/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y13/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y109/VBRK_EE2A2"
             ]
         },
         {
@@ -400,7 +402,8 @@
                 "LIOI3_X0Y9/LIOI_IBUF0",
                 "LIOI3_X0Y9/LIOI_ILOGIC0_D",
                 "L_TERM_INT_X2Y11/TERM_INT_LOGIC_OUTS_L_B18",
-                "L_TERM_INT_X2Y111/L_TERM_INT_WL1BEG2"
+                "L_TERM_INT_X2Y111/L_TERM_INT_WL1BEG2",
+                "VBRK_X9Y111/VBRK_EE2A2"
             ]
         },
         {
@@ -535,7 +538,8 @@
                 "LIOI3_X0Y9/LIOI_I1",
                 "LIOI3_X0Y9/LIOI_IBUF1",
                 "LIOI3_X0Y9/LIOI_ILOGIC1_D",
-                "L_TERM_INT_X2Y10/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y10/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y113/VBRK_EE2A2"
             ]
         },
         {
@@ -673,7 +677,8 @@
                 "LIOI3_TBYTESRC_X0Y7/LIOI_I1",
                 "LIOI3_TBYTESRC_X0Y7/LIOI_IBUF1",
                 "LIOI3_TBYTESRC_X0Y7/LIOI_ILOGIC1_D",
-                "L_TERM_INT_X2Y8/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y8/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y115/VBRK_EE2A2"
             ]
         },
         {
@@ -813,7 +818,8 @@
                 "LIOI3_TBYTESRC_X0Y7/LIOI_I0",
                 "LIOI3_TBYTESRC_X0Y7/LIOI_IBUF0",
                 "LIOI3_TBYTESRC_X0Y7/LIOI_ILOGIC0_D",
-                "L_TERM_INT_X2Y9/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y9/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y117/VBRK_EE2A2"
             ]
         },
         {
@@ -957,7 +963,8 @@
                 "LIOI3_X0Y5/LIOI_I1",
                 "LIOI3_X0Y5/LIOI_IBUF1",
                 "LIOI3_X0Y5/LIOI_ILOGIC1_D",
-                "L_TERM_INT_X2Y6/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y6/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y119/VBRK_EE2A2"
             ]
         },
         {
@@ -1103,7 +1110,8 @@
                 "LIOI3_X0Y5/LIOI_I0",
                 "LIOI3_X0Y5/LIOI_IBUF0",
                 "LIOI3_X0Y5/LIOI_ILOGIC0_D",
-                "L_TERM_INT_X2Y7/TERM_INT_LOGIC_OUTS_L_B18"
+                "L_TERM_INT_X2Y7/TERM_INT_LOGIC_OUTS_L_B18",
+                "VBRK_X9Y121/VBRK_EE2A2"
             ]
         },
         {
@@ -2591,7 +2599,8 @@
                 "LIOI3_X0Y111/LIOI_ILOGIC0_D",
                 "L_TERM_INT_X2Y117/L_TERM_INT_NW4BEG0",
                 "L_TERM_INT_X2Y117/TERM_INT_LOGIC_OUTS_L_B18",
-                "L_TERM_INT_X2Y123/L_TERM_INT_WL1BEG2"
+                "L_TERM_INT_X2Y123/L_TERM_INT_WL1BEG2",
+                "VBRK_X9Y123/VBRK_EE2A2"
             ]
         },
         {
@@ -2608,7 +2617,8 @@
                 "INT_R_X1Y112/SW6D0",
                 "INT_R_X1Y113/SW6C0",
                 "INT_R_X1Y114/SW6B0",
-                "INT_R_X1Y115/SW6A0"
+                "INT_R_X1Y115/SW6A0",
+                "VBRK_X9Y120/VBRK_SW4A0"
             ]
         },
         {
@@ -2625,7 +2635,8 @@
                 "INT_R_X1Y114/SW6D0",
                 "INT_R_X1Y115/SW6C0",
                 "INT_R_X1Y116/SW6B0",
-                "INT_R_X1Y117/SW6A0"
+                "INT_R_X1Y117/SW6A0",
+                "VBRK_X9Y122/VBRK_SW4A0"
             ]
         },
         {
@@ -2642,7 +2653,8 @@
                 "INT_R_X1Y116/SW6D0",
                 "INT_R_X1Y117/SW6C0",
                 "INT_R_X1Y118/SW6B0",
-                "INT_R_X1Y119/SW6A0"
+                "INT_R_X1Y119/SW6A0",
+                "VBRK_X9Y124/VBRK_SW4A0"
             ]
         },
         {
@@ -2659,7 +2671,8 @@
                 "INT_R_X1Y118/SW6D0",
                 "INT_R_X1Y119/SW6C0",
                 "INT_R_X1Y120/SW6B0",
-                "INT_R_X1Y121/SW6A0"
+                "INT_R_X1Y121/SW6A0",
+                "VBRK_X9Y126/VBRK_SW4A0"
             ]
         },
         {
@@ -2676,7 +2689,8 @@
                 "INT_R_X1Y120/SW6D0",
                 "INT_R_X1Y121/SW6C0",
                 "INT_R_X1Y122/SW6B0",
-                "INT_R_X1Y123/SW6A0"
+                "INT_R_X1Y123/SW6A0",
+                "VBRK_X9Y128/VBRK_SW4A0"
             ]
         },
         {
@@ -2694,7 +2708,8 @@
                 "INT_R_X1Y122/SW6D0",
                 "INT_R_X1Y123/SW6C0",
                 "INT_R_X1Y124/SW6B0",
-                "INT_R_X1Y125/SW6A0"
+                "INT_R_X1Y125/SW6A0",
+                "VBRK_X9Y131/VBRK_SW4A0"
             ]
         },
         {
@@ -2712,7 +2727,8 @@
                 "INT_R_X1Y124/SW6D0",
                 "INT_R_X1Y125/SW6C0",
                 "INT_R_X1Y126/SW6B0",
-                "INT_R_X1Y127/SW6A0"
+                "INT_R_X1Y127/SW6A0",
+                "VBRK_X9Y133/VBRK_SW4A0"
             ]
         },
         {
@@ -2729,7 +2745,8 @@
                 "INT_R_X1Y126/SW6D0",
                 "INT_R_X1Y127/SW6C0",
                 "INT_R_X1Y128/SW6B0",
-                "INT_R_X1Y129/SW6A0"
+                "INT_R_X1Y129/SW6A0",
+                "VBRK_X9Y135/VBRK_SW4A0"
             ]
         },
         {
@@ -2746,7 +2763,8 @@
                 "INT_R_X1Y128/SW6D0",
                 "INT_R_X1Y129/SW6C0",
                 "INT_R_X1Y130/SW6B0",
-                "INT_R_X1Y131/SW6A0"
+                "INT_R_X1Y131/SW6A0",
+                "VBRK_X9Y137/VBRK_SW4A0"
             ]
         },
         {
@@ -3036,8 +3054,19 @@
                 "INT_R_X1Y130/SW6D0",
                 "INT_R_X1Y131/SW6C0",
                 "INT_R_X1Y132/SW6B0",
-                "INT_R_X1Y133/SW6A0"
+                "INT_R_X1Y133/SW6A0",
+                "VBRK_X9Y139/VBRK_SW4A0"
             ]
         }
+    ],
+    "required_features": [
+        "CLK_BUFG_REBUF_X60Y117.CLK_BUFG_REBUF_R_CK_GCLK0_TOP.CLK_BUFG_REBUF_R_CK_GCLK0_BOT",
+        "CLK_BUFG_REBUF_X60Y117.GCLK0_ENABLE_ABOVE",
+        "CLK_BUFG_REBUF_X60Y117.GCLK0_ENABLE_BELOW",
+        "CLK_BUFG_REBUF_X60Y142.GCLK0_ENABLE_ABOVE",
+        "CLK_HROW_TOP_R_X60Y130.BUFHCE.BUFHCE_X0Y0.IN_USE",
+        "CLK_HROW_TOP_R_X60Y130.BUFHCE.BUFHCE_X0Y0.ZINV_CE",
+        "CLK_HROW_TOP_R_X60Y130.CLK_HROW_CK_MUX_OUT_L0.CLK_HROW_R_CK_GCLK0",
+        "CLK_HROW_TOP_R_X60Y130.CLK_HROW_R_CK_GCLK0_ACTIVE"
     ]
 }