uart_rx_stimulus_source_character_source_rom_module.vhd

来自「ALTERA的NIOS处理器！文件直接可以打开直接选择器件重新编译！」· VHDL 代码 · 共 65 行

library altera_vhdl_support;
use altera_vhdl_support.altera_vhdl_support_lib.all;

library ieee;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;

library std;
use std.textio.all;

entity uart_rx_stimulus_source_character_source_rom_module is 
        port (
              -- inputs:
                 signal address : IN STD_LOGIC_VECTOR (9 DOWNTO 0);
                 signal clk : IN STD_LOGIC;

              -- outputs:
                 signal q : OUT STD_LOGIC_VECTOR (7 DOWNTO 0)
              );

end entity uart_rx_stimulus_source_character_source_rom_module;


architecture europa of uart_rx_stimulus_source_character_source_rom_module is
  component lpm_rom is
GENERIC (
      lpm_address_control : STRING;
        lpm_width : NATURAL;
        suppress_memory_conversion_warnings : STRING;
        lpm_file : STRING;
        lpm_outdata : STRING;
        lpm_widthad : NATURAL
      );
    PORT (
    signal q : OUT STD_LOGIC_VECTOR (7 DOWNTO 0);
        signal address : IN STD_LOGIC_VECTOR (9 DOWNTO 0)
      );
  end component lpm_rom;
              signal internal_q :  STD_LOGIC_VECTOR (7 DOWNTO 0);
              TYPE mem_array is ARRAY( 1023 DOWNTO 0) of STD_LOGIC_VECTOR(7 DOWNTO 0);
              signal read_address :  STD_LOGIC_VECTOR (9 DOWNTO 0);

begin

  read_address <= address;
  lpm_rom_component : lpm_rom
    generic map(
      lpm_address_control => "UNREGISTERED",
      lpm_width => 8,
      suppress_memory_conversion_warnings => "ON",
      lpm_file => "UNUSED",
      lpm_outdata => "UNREGISTERED",
      lpm_widthad => 10
    )
    port map(
            address => read_address,
            q => internal_q
    );

  --vhdl renameroo for output signals
  q <= internal_q;
end europa;