testsuite/synth/memmux01: add a test

1 files changed, 68 insertions, 0 deletions

diff --git a/testsuite/synth/memmux01/tb_memmux05.vhdl b/testsuite/synth/memmux01/tb_memmux05.vhdl
new file mode 100644
index 000000000..919a3fd5b
--- /dev/null
+++ b/testsuite/synth/memmux01/tb_memmux05.vhdl
@@ -0,0 +1,68 @@
+entity tb_memmux05 is
+end tb_memmux05;
+
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+architecture behav of tb_memmux05 is
+  signal ad : std_logic;
+  signal val : std_logic_vector (1 downto 0);
+  signal dat, res : std_logic_vector (2 downto 0);
+begin
+  dut : entity work.memmux05
+    port map (
+      ad => ad,
+      val => val,
+      dat => dat,
+      res => res);
+
+  process
+  begin
+    dat <= "110";
+
+    ad <= '0';
+    val <= "00";
+    wait for 1 ns;
+    assert res = "100" report "1) res=" & to_bstring (res) severity failure;
+
+    ad <= '1';
+    val <= "00";
+    wait for 1 ns;
+    assert res = "000" report "2) res=" & to_bstring (res) severity failure;
+
+    ad <= '0';
+    val <= "01";
+    wait for 1 ns;
+    assert res = "101" report "3) res=" & to_bstring (res) severity failure;
+
+    ad <= '0';
+    val <= "10";
+    wait for 1 ns;
+    assert res = "110" report "4) res=" & to_bstring (res) severity failure;
+
+    ad <= '1';
+    val <= "10";
+    wait for 1 ns;
+    assert res = "100" report "5) res=" & to_bstring (res) severity failure;
+
+    dat <= "010";
+
+    ad <= '0';
+    val <= "00";
+    wait for 1 ns;
+    assert res = "000" report "6) res=" & to_bstring (res) severity failure;
+
+    ad <= '1';
+    val <= "00";
+    wait for 1 ns;
+    assert res = "000" report "7) res=" & to_bstring (res) severity failure;
+
+    ad <= '1';
+    val <= "10";
+    wait for 1 ns;
+    assert res = "100" report "8) res=" & to_bstring (res) severity failure;
+
+    wait;
+  end process;
+end behav;