diff options
Diffstat (limited to 'testsuite/synth/synth36/tb_bram.vhdl')
-rw-r--r-- | testsuite/synth/synth36/tb_bram.vhdl | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/testsuite/synth/synth36/tb_bram.vhdl b/testsuite/synth/synth36/tb_bram.vhdl new file mode 100644 index 000000000..c2e6d93a7 --- /dev/null +++ b/testsuite/synth/synth36/tb_bram.vhdl @@ -0,0 +1,57 @@ +entity tb_bram is +end tb_bram; + +library ieee; +use ieee.std_logic_1164.all; + +architecture behav of tb_bram is + signal clk, we : std_logic; + signal addr : std_logic_vector (8 downto 0); + signal dout : std_logic_vector (7 downto 0); + signal din : std_logic_vector (7 downto 0); +begin + dut: entity work.bram + port map (clk => clk, we => we, addr => addr, + data_in => din, data_out => dout); + + process + procedure pulse is + begin + clk <= '0'; + wait for 1 ns; + clk <= '1'; + wait for 1 ns; + end pulse; + begin + we <= '1'; + addr <= "000000001"; + din <= x"f1"; + pulse; + + we <= '0'; + pulse; + assert dout = x"f1" severity failure; + + we <= '1'; + addr <= "000000011"; + din <= x"f3"; + pulse; + + we <= '1'; + addr <= "111111111"; + din <= x"ff"; + pulse; + + we <= '0'; + addr <= "000000011"; + pulse; + assert dout = x"f3" severity failure; + + we <= '0'; + addr <= "111111111"; + pulse; + assert dout = x"ff" severity failure; + + wait; + end process; +end behav; |