1 files changed, 23 insertions, 0 deletions
diff --git a/tests/ice40/tribuf.v b/tests/ice40/tribuf.v
new file mode 100644
index 000000000..870a02584
--- /dev/null
+++ b/tests/ice40/tribuf.v
@@ -0,0 +1,23 @@
+module tristate (en, i, o);
+    input en;
+    input i;
+    output o;
+
+	assign o = en ? i : 1'bz;
+
+endmodule
+
+
+module top (
+input en,
+input a,
+output b
+);
+
+tristate u_tri (
+        .en (en ),
+        .i (a ),
+        .o (b )
+    );
+
+endmodule