- library ieee;
- use ieee.std_logic_1164.all;
-
- use std.env.all;
-
-
- package pkg is
-
-
- component sequencer is
- generic (
- seq : string
- );
- port (
- clk : in std_logic;
- data : out std_logic
- );
- end component sequencer;
-
- component hex_sequencer is
- generic (
- seq : string
- );
- port (
- clk : in std_logic;
- data : out std_logic_vector(3 downto 0)
- );
- end component hex_sequencer;
-
- function to_bit (a : in character) return std_logic;
- function to_hex (a : in character) return std_logic_vector;
-
- -- synthesis translate_off
- procedure stop_sim (signal clk : in std_logic; cycles : in natural; add_cycles : in natural := 2);
- -- synthesis translate_on
-
-
- end package pkg;
-
-
- package body pkg is
-
-
- 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;
-
- function to_hex (a : in character) return std_logic_vector is
- variable ret : std_logic_vector(3 downto 0);
- begin
- case a is
- when '0' | '_' => ret := x"0";
- when '1' => ret := x"1";
- when '2' => ret := x"2";
- when '3' => ret := x"3";
- when '4' => ret := x"4";
- when '5' => ret := x"5";
- when '6' => ret := x"6";
- when '7' => ret := x"7";
- when '8' => ret := x"8";
- when '9' => ret := x"9";
- when 'a' | 'A' => ret := x"A";
- when 'b' | 'B' => ret := x"B";
- when 'c' | 'C' => ret := x"C";
- when 'd' | 'D' => ret := x"D";
- when 'e' | 'E' => ret := x"E";
- when 'f' | 'F' | '-' => ret := x"F";
- when others => ret := x"X";
- end case;
- return ret;
- end function to_hex;
-
- -- synthesis translate_off
- procedure stop_sim (signal clk : in std_logic; cycles : in natural; add_cycles : in natural := 2) is
- variable index : natural := cycles + add_cycles;
- begin
- loop
- wait until rising_edge(clk);
- index := index - 1;
- if index = 0 then
- exit;
- end if;
- end loop;
- finish(0);
- end procedure stop_sim;
- -- synthesis translate_on
-
-
- end package body pkg;
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