-----------------------------------------------------------------------------
 -- Copyright (C) 2005 IMEC                                                  -
 --                                                                          -
 -- Redistribution and use in source and binary forms, with or without       -
 -- modification, are permitted provided that the following conditions       -
 -- are met:                                                                 -
 --                                                                          -
 -- 1. Redistributions of source code must retain the above copyright        -
 --    notice, this list of conditions and the following disclaimer.         -
 --                                                                          -
 -- 2. Redistributions in binary form must reproduce the above               -
 --    copyright notice, this list of conditions and the following           -
 --    disclaimer in the documentation and/or other materials provided       -
 --    with the distribution.                                                -
 --                                                                          -
 -- 3. Neither the name of the author nor the names of contributors          -
 --    may be used to endorse or promote products derived from this          -
 --    software without specific prior written permission.                   -
 --                                                                          -
 -- THIS CODE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''           -
 -- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED        -
 -- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A          -
 -- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR       -
 -- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,             -
 -- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT         -
 -- LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF         -
 -- USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND      -
 -- ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,       -
 -- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT       -
 -- OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF       -
 -- SUCH DAMAGE.                                                             -
 --                                                                          -
 -----------------------------------------------------------------------------
 -----------------------------------------------------------------------------
 -- File           : Constants_pack.vhd
 -----------------------------------------------------------------------------
 -- Description    : VHDL package for vga lab
 -- --------------------------------------------------------------------------
 -- Author         : Geert Vanwijnsberghe 
 -- Date           : 10/2/06
 -- Version        : 1.0
 -- Change history : 
 -----------------------------------------------------------------------------
   
Package Constants_pack is

  constant Del_DAC             : integer := 1;
  constant SYSTEM_CLOCK_PERIOD : time    := 10 ns;  
   
-- VGA (approximation)
-- resolution   : 640 x 480
-- refresh rate : 60 Hz
-- pixel clock  : 25 MHz

  constant PixClkPeriod : time    := 40 ns;
  constant Clk_Div      : real    := 4.0;
  constant H_total      : integer := 800;
  constant H_active     : integer := 640;
  constant H_fp         : integer := 16;
  constant H_sync       : integer := 96;
  constant H_bp         : integer := 48;
  
  constant V_total      : integer := 520;
  constant V_active     : integer := 480;
  constant V_fp         : integer := 9;
  constant V_sync       : integer := 2;
  constant V_bp         : integer := 29;
  
  constant WordsPerLine : integer := 64;

-- SVGA (exact VESA settings)
-- resolution   : 800 x 600
-- refresh rate : 72 Hz
-- pixel clock  : 50 MHz

--  constant PixClkPeriod : time    := 20 ns;
--  constant Clk_Div      : real    := 2.0;
--  constant H_total      : integer := 1040;
--  constant H_active     : integer := 800;
--  constant H_fp         : integer := 56;
--  constant H_sync       : integer := 120;
--  constant H_bp         : integer := 64;
  
--  constant V_total      : integer := 666;
--  constant V_active     : integer := 600;
--  constant V_fp         : integer := 37;
--  constant V_sync       : integer := 6;
--  constant V_bp         : integer := 23;

--  constant WordsPerLine : integer := 80;  
     
end Constants_pack;


package body Constants_pack is
end Constants_pack;