synth: add dpram3 test.

1 files changed, 52 insertions, 0 deletions

diff --git a/testsuite/synth/arr02/tb_dpram3.vhdl b/testsuite/synth/arr02/tb_dpram3.vhdl
new file mode 100644
index 000000000..9cdbd8af7
--- /dev/null
+++ b/testsuite/synth/arr02/tb_dpram3.vhdl
@@ -0,0 +1,52 @@
+entity tb_dpram3 is
+end tb_dpram3;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_dpram3 is
+  signal raddr : std_logic_vector(3 downto 0);
+  signal rdat : std_logic_vector(7 downto 0);
+  signal waddr : std_logic_vector(3 downto 0);
+  signal wdat : std_logic_vector(7 downto 0);
+  signal clk : std_logic;
+begin
+  dut: entity work.dpram3
+    port map (raddr => raddr, rdat => rdat, waddr => waddr, wdat => wdat,
+              clk => clk);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+  begin
+    raddr <= "0000";
+    waddr <= x"a";
+    wdat <= x"5a";
+    pulse;
+
+    raddr <= x"a";
+    waddr <= x"7";
+    wdat <= x"87";
+    pulse;
+    assert rdat = x"5a" severity failure;
+
+    raddr <= x"7";
+    waddr <= x"1";
+    wdat <= x"e1";
+    pulse;
+    assert rdat = x"87" severity failure;
+
+    raddr <= x"1";
+    waddr <= x"3";
+    wdat <= x"c3";
+    pulse;
+    assert rdat = x"e1" severity failure;
+
+    wait;
+  end process;
+end behav;