terminal/main.vhd

library ieee;

use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.numeric_std.all;

entity main is
    port (
        clk: in std_logic;

        dvi_d: out std_logic_vector(11 downto 0);
        dvi_clk_p: out std_logic;
        dvi_clk_n: out std_logic;
        dvi_hsync: out std_logic;
        dvi_vsync: out std_logic;
        dvi_de: out std_logic;
        dvi_reset: out std_logic;
        i2c_scl: inout std_logic;
        i2c_sda: inout std_logic;

        ps2_scl: inout std_logic;
        ps2_sda: inout std_logic;

        switch_center: in std_logic;
        rotary_up: in std_logic;
        rotary_down: in std_logic;
        rotary_push: in std_logic;

        led: out std_logic_vector(7 downto 0)
    );
end main;

architecture syn of main is
    constant clk_vga_f: integer := 48_000_000;
    signal clk_vga: std_logic;

    signal reset: std_logic;
begin

    reset <= switch_center;

    -- convert the 100MHz to a 48MHz pixel clock
    clock_source: entity work.clock_source port map (
		CLKIN_IN => clk,
		CLKFX_OUT => clk_vga
	);

    terminal: entity work.terminal port map (
        clk => clk_vga,
        reset => reset,

        write_enable => '0',
        write_data => x"00",

        dvi_d => dvi_d,
        dvi_clk_p => dvi_clk_p,
        dvi_clk_n => dvi_clk_n,
        dvi_hsync => dvi_hsync,
        dvi_vsync => dvi_vsync,
        dvi_de => dvi_de,
        dvi_reset => dvi_reset,
        i2c_scl => i2c_scl,
        i2c_sda => i2c_sda
    );

    keyboard_i: entity work.keyboard generic map (
        input_clk => clk_vga_f
    ) port map (
        clk => clk_vga,
        reset => reset,
        bytes_received => led(5 downto 0),
        ps2_scl => ps2_scl,
        ps2_sda => ps2_sda
    );

    led(7) <= reset;
    led(6) <= '0';

end syn;