标签:other nal pre port process blog unsigned clock win
library IEEE; use IEEE.std_logic_1164.all; use IEEE.std_logic_unsigned.all; entity clock60 is port( CLK : in std_logic; --clear CLR : in std_logic; --clock s1 : out std_logic_vector(3 downto 0); --1 s10 : out std_logic_vector(3 downto 0); --10 c0 : out std_logic --adder of it ); end clock60; architecture art of clock60 is signal tmp1 : std_logic_vector(3 downto 0); signal tmp10 : std_logic_vector(2 downto 0); begin process(CLK, CLR) begin if(CLR = ‘1‘) then tmp1 <= "0000"; tmp10 <= "000"; elsif(CLK‘event and CLK=‘1‘) then if(tmp1 = 9) then tmp1 <= "0000"; if(tmp10 = 5) then tmp10 <= "000"; else tmp10 <= tmp10 + 1; end if; else tmp1 <= tmp1 + 1; end if; end if; end process; s1 <= tmp1; s10 <= tmp10; c0 <= ‘1‘ when(tmp10 = 5 and tmp1 = 9) else ‘0‘; end art;
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity window is port( I: in std_logic_vector(3 downto 0); A: out std_logic_vector(6 downto 0) ); end window; architecture art of window is begin with I select A <="1111110" when "0000", "0001100" when "0001", "1101101" when "0010", "1111001" when "0011", "0110011" when "0100", "1011011" when "0101", "0011111" when "0110", "1110000" when "0111", "1111111" when "1000", "1110011" when "1001", "0000000" when others; end art;
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity trai is port( I, G : in std_logic; Aout: out std_logic ); end trai; architecture art of trai is begin process(I,G) begin if(G = ‘0‘) then Aout <= I; else Aout <= ‘Z‘; end if; end process; end art;
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity prec is port( I: in std_logic_vector(1 downto 0); A: out std_logic_vector(3 downto 0) ); end prec; architecture art of prec is begin with I select A <="1110" when "00", "1101" when "01", "1011" when "10", "0111" when others; end art;
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity selecter is port( I, R: in std_logic_vector(3 downto 0); Aout: out std_logic ); end selecter; architecture art of selecter is begin Aout <= R(0) when I = "1110" else R(1) when I = "1101" else R(2) when I = "1011" else R(3) when I = "0111" else ‘0‘; end art;
library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_unsigned.all; entity sour is port( CLK: in std_logic; CLK2: out std_logic ); end sour; architecture art of sour is signal tmp : std_logic_vector(9 downto 0); begin process(CLK) begin if(tmp = 999) then tmp <= "0000000000"; else tmp <= tmp + 1; end if; end process; CLK2 <= ‘1‘ when tmp = 999 else ‘0‘; end art;
标签:other nal pre port process blog unsigned clock win
原文地址:http://www.cnblogs.com/lawyer/p/6977898.html