mips_sys

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LIBRARY ieee;
USE ieee.std_logic_1164.all;
USE ieee.numeric_std.all;
USE std.textio.all;
USE work.io_lcd_pins.all;
USE work.io_switches_pins.all;
ENTITY e_testbed IS
END ENTITY e_testbed;
ARCHITECTURE a_testbed OF e_testbed IS
    COMPONENT e_system IS
        PORT (
            clk:              IN  std_logic;
            pin_o_leds:       OUT std_logic_vector(7 DOWNTO 0);
            pin_o_lcd:        OUT t_io_lcd_pins;
            pin_i_switches:   IN  t_io_switches_pins;
            pin_i_uart_rx:    IN  std_logic;
            pin_o_uart_tx:    OUT std_logic;
            pin_i_eth_rx_clk: IN  std_logic;
            pin_i_eth_rxd:    IN  std_logic_vector(4 DOWNTO 0);
            pin_i_eth_rx_dv:  IN  std_logic;
            pin_i_eth_crs:    IN  std_logic;
            pin_i_eth_col:    IN  std_logic;
            pin_i_eth_tx_clk: IN  std_logic;
            pin_o_eth_txd:    OUT std_logic_vector(3 DOWNTO 0);
            pin_o_eth_tx_en:  OUT std_logic
        );
    END COMPONENT e_system;
    -- ICMP echo request
    TYPE t_eth_data IS ARRAY(0 TO 220 - 1) OF std_logic_vector(3 DOWNTO 0);
    CONSTANT eth_data: t_eth_data := (
        X"5", X"5", X"5", X"5", X"5", X"5", X"5", X"5",
        X"5", X"5", X"5", X"5", X"5", X"5", X"5", X"D",
        X"2", X"0", X"D", X"4", X"9", X"4", X"0", X"5",
        X"3", X"5", X"1", X"0", X"0", X"0", X"D", X"1",
        X"0", X"6", X"C", X"D", X"5", X"7", X"D", X"2",
        X"8", X"0", X"0", X"0", X"5", X"4", X"0", X"0",
        X"0", X"0", X"4", X"5", X"0", X"0", X"0", X"0",
        X"0", X"4", X"0", X"0", X"0", X"4", X"1", X"0",
        X"8", X"B", X"5", X"F", X"0", X"C", X"8", X"A",
        X"0", X"0", X"A", X"0", X"0", X"C", X"8", X"A",
        X"0", X"0", X"9", X"5", X"8", X"0", X"0", X"0",
        X"E", X"8", X"7", X"5", X"F", X"0", X"2", X"6",
        X"0", X"0", X"1", X"0", X"6", X"E", X"4", X"B",
        X"D", X"6", X"F", X"4", X"0", X"0", X"0", X"0",
        X"0", X"0", X"0", X"0", X"4", X"4", X"E", X"6",
        X"3", X"0", X"0", X"0", X"0", X"0", X"0", X"0",
        X"0", X"0", X"0", X"0", X"0", X"1", X"1", X"1",
 
 
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