Subversion Repositories heap_sorter

-------------------------------------------------------------------------------

-- Title      : Testbench for design "heap-sorter"

-- Project    : heap-sorter

-------------------------------------------------------------------------------

-- File       : sorter_sys_tb.vhd

-- Author     : Wojciech M. Zabolotny <wzab@ise.pw.edu.pl>

-- Company    : 

-- Created    : 2010-05-14

-- Last update: 2011-07-06

-- Platform   : 

-- Standard   : VHDL'93

-------------------------------------------------------------------------------

-- Description: 

-------------------------------------------------------------------------------

-- Copyright (c) 2010 Wojciech M. Zabolotny

-- This file is published under the BSD license, so you can freely adapt

-- it for your own purposes.

-- Additionally this design has been described in my article:

--    Wojciech M. Zabolotny, "Dual port memory based Heapsort implementation

--    for FPGA", Proc. SPIE 8008, 80080E (2011); doi:10.1117/12.905281

-- I'd be glad if you cite this article when you publish something based

-- on my design.

-------------------------------------------------------------------------------

-- Revisions  :

-- Date        Version  Author  Description

-- 2010-05-14  1.0      wzab    Created

-------------------------------------------------------------------------------

library ieee;

use ieee.std_logic_1164.all;

use ieee.numeric_std.all;

use ieee.std_logic_textio.all;

use std.textio.all;

library work;

use work.sys_config.all;

use work.sorter_pkg.all;

-------------------------------------------------------------------------------

entity sorter_sys_tb is

end entity sorter_sys_tb;

-------------------------------------------------------------------------------

architecture sort_tb_beh of sorter_sys_tb is

  constant NLEVELS : integer := SYS_NLEVELS;

  -- component ports

  signal din   : T_DATA_REC := DATA_REC_INIT_DATA;

  signal dout  : T_DATA_REC;

  signal we    : std_logic  := '0';

  signal dav   : std_logic  := '0';

  signal rst_n : std_logic  := '0';

  signal ready : std_logic  := '0';

  component sorter_sys

    generic (

      NADDRBITS : integer);

    port (

      din   : in  T_DATA_REC;

      we    : in  std_logic;

      dout  : out T_DATA_REC;

      dav   : out std_logic;

      clk   : in  std_logic;

      rst_n : in  std_logic;

      ready : out std_logic);

  end component;

  -- clock

  signal Clk : std_logic := '1';

  signal end_sim : boolean              := false;

  signal div     : integer range 0 to 8 := 0;

begin  -- architecture sort_tb_beh

  -- component instantiation

  DUT : entity work.sorter_sys

    generic map (

      NLEVELS => NLEVELS)

    port map (

      din   => din,

      we    => we,

      dout  => dout,

      dav   => dav,

      clk   => clk,

      rst_n => rst_n,

      ready => ready);

  -- clock generation

  Clk <= not Clk after 10 ns when end_sim = false else '0';

  -- waveform generation

  WaveGen_Proc : process

    file events_in       : text open read_mode is "events.in";

    variable input_line  : line;

    file events_out      : text open write_mode is "events.out";

    variable output_line : line;

    variable rec         : T_DATA_REC;

    variable skey       : std_logic_vector(DATA_REC_SORT_KEY_WIDTH-1 downto 0);

    variable spayload : std_logic_vector(DATA_REC_PAYLOAD_WIDTH-1 downto 0);

  begin

    -- insert signal assignments here

    wait until Clk = '1';

    wait for 31 ns;

    rst_n <= '1';

    wait until ready = '1';

    loop

      wait until Clk = '0';

      wait until Clk = '1';

      we <= '0';

      if div = 3 then

        div        <= 0;

        exit when endfile(events_in);

        readline(events_in, input_line);

        read(input_line, rec.init);

        read(input_line, rec.valid);

        read(input_line, skey);

        read(input_line, spayload);

        rec.d_key := unsigned(skey);

        rec.d_payload := spayload;

        din        <= rec;

        we         <= '1';

      else

        div <= div+1;

      end if;

      if dav = '1' then

        -- Process read event

        rec := dout;

        write(output_line, rec.init);

        write(output_line, rec.valid);

        write(output_line,string'(" "));

        write(output_line, std_logic_vector(rec.d_key));

        write(output_line,string'(" "));

        write(output_line, std_logic_vector(rec.d_payload));

        writeline(events_out, output_line);

      end if;

    end loop;

    end_sim   <= true;

    rec.valid := '0';

    din       <= rec;

    wait;

  end process WaveGen_Proc;

end architecture sort_tb_beh;

-------------------------------------------------------------------------------

configuration sorter_sys_tb_sort_tb_beh_cfg of sorter_sys_tb is

  for sort_tb_beh

  end for;

end sorter_sys_tb_sort_tb_beh_cfg;

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