diff options
Diffstat (limited to 'testsuite/synth/issue1292/issue.vhdl')
-rw-r--r-- | testsuite/synth/issue1292/issue.vhdl | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/testsuite/synth/issue1292/issue.vhdl b/testsuite/synth/issue1292/issue.vhdl new file mode 100644 index 000000000..b7e81ec24 --- /dev/null +++ b/testsuite/synth/issue1292/issue.vhdl @@ -0,0 +1,94 @@ +library ieee; + use ieee.std_logic_1164.all; + + +entity sequencer is + generic ( + seq : string + ); + port ( + clk : in std_logic; + data : out std_logic + ); +end entity sequencer; + + +architecture rtl of sequencer is + + signal index : natural := seq'low; + signal ch : character; + + function to_bit (a : in character) return std_logic is + variable ret : std_logic; + begin + case a is + when '0' | '_' => ret := '0'; + when '1' | '-' => ret := '1'; + when others => ret := 'X'; + end case; + return ret; + end function to_bit; + +begin + + + process (clk) is + begin + if rising_edge(clk) then + if (index < seq'high) then + index <= index + 1; + end if; + end if; + end process; + + ch <= seq(index); + + data <= to_bit(ch); + + +end architecture rtl; + + + +library ieee; + use ieee.std_logic_1164.all; + + +entity issue is + port ( + clk : in std_logic + ); +end entity issue; + + +architecture psl of issue is + + component sequencer is + generic ( + seq : string + ); + port ( + clk : in std_logic; + data : out std_logic + ); + end component sequencer; + + signal a, b, c : std_logic; + +begin + + + -- 012345678901234 + SEQ_A : sequencer generic map ("_-______-______") port map (clk, a); + SEQ_B : sequencer generic map ("___-__-___-__-_") port map (clk, b); + SEQ_C : sequencer generic map ("______-___-____") port map (clk, c); + + + -- All is sensitive to rising edge of clk + default clock is rising_edge(clk); + + -- This assertion holds + NEXT_EVENT_a : assert always (a -> next_event_e(b)[1 to 2](c)); + + +end architecture psl; |