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-rw-r--r--testsuite/synth/conv01/pos01.vhdl48
1 files changed, 48 insertions, 0 deletions
diff --git a/testsuite/synth/conv01/pos01.vhdl b/testsuite/synth/conv01/pos01.vhdl
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+++ b/testsuite/synth/conv01/pos01.vhdl
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+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity pos01 is
+ generic (g_en : boolean := True);
+ port (clk : std_logic;
+ rst : std_logic;
+ en : std_logic;
+ st : out std_logic_vector(1 downto 0));
+end pos01;
+
+architecture behav of pos01 is
+ type t_state is (IDLE, WAIT1, WAIT2, DONE);
+ signal s : t_state;
+ constant c1 : integer := t_state'pos(WAIT2);
+ constant c2 : integer := boolean'pos(g_en);
+begin
+ process (clk) is
+ begin
+ if rising_edge(clk) then
+ if rst = '1' then
+ s <= IDLE;
+ else
+ case s is
+ when IDLE =>
+ if en = '1' then
+ s <= WAIT1;
+ end if;
+ when WAIT1 =>
+ if en = '1' then
+ s <= WAIT2;
+ end if;
+ when WAIT2 =>
+ if en = '1' then
+ s <= DONE;
+ end if;
+ when DONE =>
+ null;
+ end case;
+ end if;
+ end if;
+ end process;
+
+ st <= std_logic_vector(to_unsigned(t_state'pos(s), 2));
+end behav;
+
+