diff --git a/npc/constr/Switch.nxdc b/npc/constr/Switch.nxdc
new file mode 100644
index 0000000..11e3e40
--- /dev/null
+++ b/npc/constr/Switch.nxdc
@@ -0,0 +1,5 @@
+top=Switch
+
+io_sw_0 (SW0)
+io_sw_1 (SW1)
+io_out (LD0)