1 files changed, 13 insertions, 0 deletions
diff --git a/ice40/regressions/issue0237/top.v b/ice40/regressions/issue0237/top.v
new file mode 100644
index 0000000..6527ce6
--- /dev/null
+++ b/ice40/regressions/issue0237/top.v
@@ -0,0 +1,13 @@
+module top(
+        output P1A1
+);
+        wire clk;
+        SB_HFOSC osc(
+                .CLKHFPU(1'b1),
+                .CLKHFEN(1'b1),
+                .CLKHF(clk)
+        );
+
+        assign P1A1 = !clk;
+
+endmodule