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author | Tristan Gingold <tgingold@free.fr> | 2019-07-31 20:43:35 +0200 |
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committer | Tristan Gingold <tgingold@free.fr> | 2019-07-31 20:43:35 +0200 |
commit | e02c802538cd52c55f881118380fa0d06da3acce (patch) | |
tree | f770b3e91efbc4322a07d63f3c8c9d9ff92ea7d9 /testsuite/synth/dff01/tb_dff13.vhdl | |
parent | f6d4d0d916e772d3e21701f53a7dbb6b0abe756d (diff) | |
download | ghdl-e02c802538cd52c55f881118380fa0d06da3acce.tar.gz ghdl-e02c802538cd52c55f881118380fa0d06da3acce.tar.bz2 ghdl-e02c802538cd52c55f881118380fa0d06da3acce.zip |
synth: add a dff test.
Diffstat (limited to 'testsuite/synth/dff01/tb_dff13.vhdl')
-rw-r--r-- | testsuite/synth/dff01/tb_dff13.vhdl | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/testsuite/synth/dff01/tb_dff13.vhdl b/testsuite/synth/dff01/tb_dff13.vhdl new file mode 100644 index 000000000..22adb53d1 --- /dev/null +++ b/testsuite/synth/dff01/tb_dff13.vhdl @@ -0,0 +1,40 @@ +entity tb_dff13 is +end tb_dff13; + +library ieee; +use ieee.std_logic_1164.all; + +architecture behav of tb_dff13 is + signal clk : std_logic; + signal din : std_logic; + signal dout : std_logic; +begin + dut: entity work.dff13 + 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 <= '0'; + pulse; + assert dout = '0' severity failure; + din <= '1'; + pulse; + assert dout = '1' severity failure; + pulse; + assert dout = '1' severity failure; + din <= '0'; + pulse; + assert dout = '0' severity failure; + wait; + end process; +end behav; |