1 files changed, 39 insertions, 0 deletions
diff --git a/ecp5/regressions/issue0194/testcase.v b/ecp5/regressions/issue0194/testcase.v
new file mode 100644
index 0000000..04a83f6
--- /dev/null
+++ b/ecp5/regressions/issue0194/testcase.v
@@ -0,0 +1,39 @@
+module top(
+	input clk,
+	inout pin_IO,
+);
+
+wire pin_I;
+reg pin_O = 16'd0;
+reg pin_OE = 1'd0;
+reg state = 1'd0;
+reg next_state;
+
+always @(*) begin
+	pin_IO <= 16'd0;
+	next_state <= state;
+	case (state)
+		1'd1: begin
+			next_state <= 1'd0;
+		end
+		default: begin
+			pin_IO <= 1'd1;
+			next_state <= 1'd1;
+		end
+	endcase
+end
+
+always @(posedge clk) begin
+	state <= next_state;
+end
+
+TRELLIS_IO #(
+	.DIR("BIDIR")
+) TRELLIS_IO (
+	.I(pin_O),
+	.T(pin_OE),
+	.B(pin_IO),
+	.O(pin_I)
+);
+
+endmodule
+\ No newline at end of file