synth/cpu/reg.vhdl
2021-03-06 16:37:42 -08:00

56 lines
1.2 KiB
VHDL

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-- Company:
-- Engineer:
--
-- Create Date: 02/13/2021 01:13:18 PM
-- Design Name:
-- Module Name: register - Behavioral
-- Project Name:
-- Target Devices:
-- Tool Versions:
-- Description:
--
-- Dependencies:
--
-- Revision:
-- Revision 0.01 - File Created
-- Additional Comments:
--
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
-- Uncomment the following library declaration if using
-- arithmetic functions with Signed or Unsigned values
--use IEEE.NUMERIC_STD.ALL;
-- Uncomment the following library declaration if instantiating
-- any Xilinx leaf cells in this code.
--library UNISIM;
--use UNISIM.VComponents.all;
entity reg is
Port ( d : in STD_LOGIC_VECTOR (15 downto 0);
q : out STD_LOGIC_VECTOR (15 downto 0);
rst : in STD_LOGIC;
clk : in STD_LOGIC);
end reg;
architecture Behavioral of reg is
begin
process(clk, rst) is
begin
if (rst = '1') then
q <= x"0000";
else
if rising_edge(clk) then
q <= d;
end if;
end if;
end process;
end Behavioral;