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entity tb_tdp_ram is
end tb_tdp_ram;
library ieee;
use ieee.std_logic_1164.all;
architecture behav of tb_tdp_ram is
constant WIDTH_A : natural := 8;
constant ADDRWIDTH_A : natural := 12;
constant WIDTH_B : natural := 32;
constant ADDRWIDTH_B : natural := 10;
constant COL_WIDTH : natural := 8;
signal clk_a : std_logic;
signal read_a : std_logic;
signal write_a : std_logic;
signal byteen_a : std_logic_vector(WIDTH_A/COL_WIDTH - 1 downto 0);
signal addr_a : std_logic_vector(ADDRWIDTH_A - 1 downto 0);
signal data_read_a : std_logic_vector(WIDTH_A - 1 downto 0);
signal data_write_a : std_logic_vector(WIDTH_A - 1 downto 0);
signal clk_b : std_logic;
signal read_b : std_logic;
signal write_b : std_logic;
signal byteen_b : std_logic_vector(WIDTH_B/COL_WIDTH - 1 downto 0);
signal addr_b : std_logic_vector(ADDRWIDTH_B - 1 downto 0);
signal data_read_b : std_logic_vector(WIDTH_B - 1 downto 0);
signal data_write_b : std_logic_vector(WIDTH_B - 1 downto 0);
begin
tdp_ram_2: entity work.tdp_ram
generic map (
ADDRWIDTH_A => ADDRWIDTH_A,
WIDTH_A => WIDTH_A,
ADDRWIDTH_B => ADDRWIDTH_B,
WIDTH_B => WIDTH_B,
COL_WIDTH => COL_WIDTH)
port map (
clk_a => clk_a,
read_a => read_a,
write_a => write_a,
byteen_a => byteen_a,
addr_a => addr_a,
data_read_a => data_read_a,
data_write_a => data_write_a,
clk_b => clk_b,
read_b => read_b,
write_b => write_b,
byteen_b => byteen_b,
addr_b => addr_b,
data_read_b => data_read_b,
data_write_b => data_write_b);
process
procedure pulsea is
begin
clk_a <= '0';
wait for 1 ns;
clk_a <= '1';
wait for 1 ns;
end pulsea;
procedure pulseb is
begin
clk_b <= '0';
wait for 1 ns;
clk_b <= '1';
wait for 1 ns;
end pulseb;
begin
clk_a <= '0';
clk_b <= '0';
write_b <= '1';
read_b <= '0';
addr_b <= b"00_0000_0000";
byteen_b <= "1111";
data_write_b <= x"d3_c2_b1_a0";
pulseb;
write_a <= '0';
read_a <= '1';
addr_a <= x"001";
pulsea;
pulsea;
assert data_read_a = x"b1" severity failure;
write_a <= '1';
read_a <= '0';
byteen_a <= "1";
addr_a <= x"000";
data_write_a <= x"10";
pulsea;
write_b <= '0';
read_b <= '1';
addr_b <= b"00_0000_0000";
pulseb;
pulseb;
assert data_read_b = x"d3_c2_b1_10" severity failure;
wait;
end process;
end behav;
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