티스토리 뷰
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_arith.all; use ieee.std_logic_unsigned.all; entity VGA_Pattern_Generator is port( nRst : in std_logic; clk : in std_logic; VGA_CLK : out std_logic; VGA_BLANK : out std_logic; VGA_HS : out std_logic; VGA_VS : out std_logic; VGA_SYNC : out std_logic; VGA_R : out std_logic_vector(9 downto 0); VGA_G : out std_logic_vector(9 downto 0); VGA_B : out std_logic_vector(9 downto 0) ); end VGA_Pattern_Generator; architecture BEH of VGA_Pattern_Generator is signal H_cnt : std_logic_vector(9 downto 0); signal V_cnt : std_logic_vector(9 downto 0); signal pclk : std_logic; begin process(nRst, clk) begin if(nRst = '0') then pclk <= '0'; elsif rising_edge(clk) then pclk <= not pclk; end if; end process; process(nRst, pclk) begin if(nRst = '0') then H_cnt <= (others => '0'); V_cnt <= (others => '0'); elsif rising_edge(pclk) then if(H_cnt = 799) then H_cnt <= (others => '0'); if(V_cnt = 524) then V_cnt <= (others => '0'); else V_cnt <= V_cnt + 1; end if; else H_cnt <= H_cnt + 1; end if; end if; end process; VGA_CLK <= pclk; VGA_HS <= '0' when (H_cnt >= 0) and (H_cnt <= 95) else '1'; VGA_VS <= '0' when (V_cnt >= 0) and (V_cnt <= 1) else '1'; VGA_BLANK <= '1' when (H_cnt >= 140) and (H_cnt <= 790) else '0'; VGA_SYNC <= '0' when (H_cnt >= 140) and (H_cnt <= 790) else '1'; VGA_R <= "1111111111" when (V_cnt >= 31) and (V_cnt <= 153) else "0000011111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); VGA_G <= "1111111111" when (V_cnt >= 154) and (V_cnt <= 274) else "0000011111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); VGA_B <= "1111111111" when (V_cnt >= 275) and (V_cnt <= 395) else "0000011111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); end BEH; |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 | library ieee; use ieee.std_logic_1164.all; use ieee.std_logic_arith.all; use ieee.std_logic_unsigned.all; entity VGA_Pattern_Generator is port( nRst : in std_logic; clk : in std_logic; VGA_CLK : out std_logic; VGA_BLANK : out std_logic; VGA_HS : out std_logic; VGA_VS : out std_logic; VGA_SYNC : out std_logic; VGA_R : out std_logic_vector(9 downto 0); VGA_G : out std_logic_vector(9 downto 0); VGA_B : out std_logic_vector(9 downto 0) ); end VGA_Pattern_Generator; architecture BEH of VGA_Pattern_Generator is signal H_cnt : std_logic_vector(9 downto 0); signal V_cnt : std_logic_vector(9 downto 0); signal pclk : std_logic; begin process(nRst, clk) begin if(nRst = '0') then pclk <= '0'; elsif rising_edge(clk) then pclk <= not pclk; end if; end process; process(nRst, pclk) begin if(nRst = '0') then H_cnt <= (others => '0'); V_cnt <= (others => '0'); elsif rising_edge(pclk) then if(H_cnt = 799) then H_cnt <= (others => '0'); if(V_cnt = 524) then V_cnt <= (others => '0'); else V_cnt <= V_cnt + 1; end if; else H_cnt <= H_cnt + 1; end if; end if; end process; VGA_CLK <= pclk; VGA_HS <= '0' when (H_cnt >= 0) and (H_cnt <= 95) else '1'; VGA_VS <= '0' when (V_cnt >= 0) and (V_cnt <= 1) else '1'; VGA_BLANK <= '1' when (H_cnt >= 140) and (H_cnt <= 790) else '0'; VGA_SYNC <= '0' when (H_cnt >= 140) and (H_cnt <= 790) else '1'; VGA_R <= "1111111111" when (V_cnt >= 31) and (V_cnt <= 153) else "1111111111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); VGA_G <= "1111111111" when (V_cnt >= 154) and (V_cnt <= 274) else "1111111111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); VGA_B <= "1111111111" when (V_cnt >= 275) and (V_cnt <= 395) else "1111111111" when (V_cnt >= 396) and (V_cnt <= 516) else (others => '0'); end BEH; | cs |
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