1 files changed, 42 insertions, 0 deletions
diff --git a/testsuite/synth/fsm01/fsm_3s.vhdl b/testsuite/synth/fsm01/fsm_3s.vhdl
new file mode 100644
index 000000000..bd27a0ffd
--- /dev/null
+++ b/testsuite/synth/fsm01/fsm_3s.vhdl
@@ -0,0 +1,42 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity fsm_3s is
+  port (clk : std_logic;
+        rst : std_logic;
+        d : std_logic;
+        done : out std_logic);
+end fsm_3s;
+
+architecture behav of fsm_3s is
+  type state_t is (S0_1, S1_0, S2_1);
+  signal s : state_t;
+begin
+  process (clk)
+  begin
+    if rising_edge(clk) then
+      if rst = '1' then
+        s <= S0_1;
+        done <= '0';
+      else
+        --  Reset by default
+        s <= S0_1;
+        done <= '0';
+        case s is
+          when S0_1 =>
+            if d = '1' then
+              s <= S1_0;
+            end if;
+          when S1_0 =>
+            if d = '0' then
+              s <= S2_1;
+            end if;
+          when S2_1 =>
+            if d = '1' then
+              done <= '1';
+            end if;
+        end case;
+      end if;
+    end if;
+  end process;
+end behav;