diff options
Diffstat (limited to 'testsuite/synth/dff02/tb_dff05.vhdl')
-rw-r--r-- | testsuite/synth/dff02/tb_dff05.vhdl | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/testsuite/synth/dff02/tb_dff05.vhdl b/testsuite/synth/dff02/tb_dff05.vhdl new file mode 100644 index 000000000..00e7fec37 --- /dev/null +++ b/testsuite/synth/dff02/tb_dff05.vhdl @@ -0,0 +1,45 @@ +entity tb_dff05 is +end tb_dff05; + +library ieee; +use ieee.std_logic_1164.all; + +architecture behav of tb_dff05 is + signal clk : std_logic; + signal din : std_logic_vector (7 downto 0); + signal dout : std_logic_vector (7 downto 0); +begin + dut: entity work.dff05 + port map ( + q => dout, + d => din, + clk => clk); + + process + procedure pulse is + begin + clk <= '0'; + wait for 1 ns; + clk <= '1'; + wait for 1 ns; + end pulse; + begin + din <= b"1_00000_00"; + pulse; + assert dout (0) = '0' severity failure; + + din <= b"0_00001_00"; + pulse; + assert dout (2) = '1' severity failure; + + din <= b"0_00000_01"; + pulse; + assert dout (2) = '0' severity failure; + + din <= b"1_00000_01"; + pulse; + assert dout (0) = '1' severity failure; + + wait; + end process; +end behav; |