diff options
Diffstat (limited to 'testsuite/synth/dff05/tb_dff02.vhdl')
-rw-r--r-- | testsuite/synth/dff05/tb_dff02.vhdl | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/testsuite/synth/dff05/tb_dff02.vhdl b/testsuite/synth/dff05/tb_dff02.vhdl new file mode 100644 index 000000000..d22a3bd9c --- /dev/null +++ b/testsuite/synth/dff05/tb_dff02.vhdl @@ -0,0 +1,55 @@ +entity tb_dff02 is +end tb_dff02; + +library ieee; +use ieee.std_logic_1164.all; + +architecture behav of tb_dff02 is + signal clk : std_logic; + signal din : std_logic; + signal dout : std_logic; + signal rst : std_logic; +begin + dut: entity work.dff02 + port map ( + q => dout, + d => din, + clk => clk, + rst => rst); + + process + procedure pulse is + begin + clk <= '0'; + wait for 1 ns; + clk <= '1'; + wait for 1 ns; + end pulse; + begin + rst <= '1'; + wait for 1 ns; + assert dout = '0' severity failure; + + rst <= '0'; + din <= '1'; + pulse; + assert dout = '1' severity failure; + + din <= '0'; + pulse; + assert dout = '0' severity failure; + + pulse; + assert dout = '0' severity failure; + + din <= '1'; + pulse; + assert dout = '1' severity failure; + + rst <= '1'; + wait for 1 ns; + assert dout = '0' severity failure; + + wait; + end process; +end behav; |