-------------------------------------------------------------------------------
-- Title      : vga_driver entity
-- Project    : LU Digital Design
-------------------------------------------------------------------------------
-- File       : vga_driver_ent.vhd
-- Author     : Thomas Handl
-- Company    : TU Wien
-- Created    : 2004-12-15
-- Last update: 2006-02-24
-------------------------------------------------------------------------------
-- Description: generate vsync and hsync
-------------------------------------------------------------------------------
-- Copyright (c) 2004 TU Wien
-------------------------------------------------------------------------------
-- Revisions  :
-- Date        Version  Author  Description
-- 2004-12-15  1.0      handl   Created
-- 2006-02-24  2.0      ST      revised
-------------------------------------------------------------------------------

-------------------------------------------------------------------------------
-- LIBRARIES
-------------------------------------------------------------------------------

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

use work.vga_pak.all;

-------------------------------------------------------------------------------
-- ENTITY
-------------------------------------------------------------------------------


entity vga_driver is
  port(clk            : in  std_logic;
       reset          : in  std_logic;
       column_counter : out std_logic_vector(COL_CNT_WIDTH-1 downto 0);
       line_counter   : out std_logic_vector(LINE_CNT_WIDTH-1 downto 0);
       h_enable       : out std_logic;
       v_enable       : out std_logic;
       hsync, vsync   : out std_logic;

       d_hsync_state        : out hsync_state_type;
       d_vsync_state        : out vsync_state_type;
       d_hsync_counter      : out std_logic_vector(HSYN_CNT_WIDTH-1 downto 0);
       d_vsync_counter      : out std_logic_vector(VSYN_CNT_WIDTH-1 downto 0);
       d_set_hsync_counter  : out std_logic;
       d_set_vsync_counter  : out std_logic;
       d_set_column_counter : out std_logic;
       d_set_line_counter   : out std_logic
       );

end vga_driver;

-------------------------------------------------------------------------------
-- END ENTITY
-------------------------------------------------------------------------------