2 files changed, 71 insertions, 1 deletions
diff --git a/testsuite/synth/memmux01/tb_memmux01.vhdl b/testsuite/synth/memmux01/tb_memmux01.vhdl
new file mode 100644
index 000000000..f81759428
--- /dev/null
+++ b/testsuite/synth/memmux01/tb_memmux01.vhdl
@@ -0,0 +1,70 @@
+entity tb_memmux01 is
+end tb_memmux01;
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+architecture behav of tb_memmux01 is
+  signal wen  : std_logic;
+  signal addr : std_logic_vector (3 downto 0);
+  signal wdat : std_logic;
+  signal rdat : std_logic_vector (15 downto 0);
+  signal clk  : std_logic;
+  signal rst  : std_logic;
+begin
+  dut : entity work.memmux01
+    port map (
+      wen  => wen,
+      addr => addr,
+      wdat => wdat,
+      rdat => rdat,
+      clk  => clk,
+      rst  => rst);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+    variable v : std_logic_vector(15 downto 0);
+  begin
+    rst <= '1';
+    wen <= '0';
+    wdat <= '1';
+    addr <= x"0";
+    pulse;
+
+    rst <= '0';
+    addr <= x"4";
+    wen <= '1';
+    pulse;
+    assert rdat = x"0000" severity failure;
+
+    addr <= x"f";
+    pulse;
+    assert rdat = x"0010" severity failure;
+
+    addr <= x"4";
+    wdat <= '0';
+    pulse;
+    assert rdat = x"8010" severity failure;
+
+    pulse;
+    assert rdat = x"8000" severity failure;
+
+    v := x"8000";
+    wdat <= '1';
+    for i in 0 to 14 loop
+      addr <= std_logic_vector(to_unsigned(i, 4));
+      pulse;
+      assert rdat = v severity failure;
+      v (i) := '1';
+    end loop;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/memmux01/testsuite.sh b/testsuite/synth/memmux01/testsuite.sh
index d3ba44953..a53d09350 100755
--- a/testsuite/synth/memmux01/testsuite.sh
+++ b/testsuite/synth/memmux01/testsuite.sh
@@ -2,7 +2,7 @@
 
 . ../../testenv.sh
 
-for t in memmux02 memmux03; do
+for t in memmux01 memmux02 memmux03; do
     analyze $t.vhdl tb_$t.vhdl
     elab_simulate tb_$t
     clean