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[/] [System09/] [trunk/] [rtl/] [VHDL/] [vdu8.vhd] - Diff between revs 99 and 118

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Rev 99 Rev 118
Line 13... Line 13...
--                   Character attribute bita for foreground and backgrond colour
--                   Character attribute bita for foreground and backgrond colour
--                   1 bit for each Blue Green and Red signal
--                   1 bit for each Blue Green and Red signal
--                   Supports 2 x 8 chunky graphics character mode.
--                   Supports 2 x 8 chunky graphics character mode.
--                   Uses Generic arguments for setting the video synchronization timing.
--                   Uses Generic arguments for setting the video synchronization timing.
--                  
--                  
--  Dependencies   : ieee.Std_Logic_1164
--  Dependencies   : ieee.std_logic_1164
--                   ieee.std_logic_unsigned
 
--                   ieee.std_logic_arith
 
--                   ieee.numeric_std
--                   ieee.numeric_std
--
--
--  Uses           : ram_2k (ram2k_b16.vhd)             2KByte Character & Attribute buffer
--  Uses           : ram_2k (ram2k_b16.vhd)             2KByte Character & Attribute buffer
--                   char_rom (char_rom2k_b16.vhd)      2KByte Character Generator ROM 
--                   char_rom (char_rom2k_b16.vhd)      2KByte Character Generator ROM 
--
--
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--
--
 
 
Library IEEE;
Library IEEE;
  use IEEE.std_logic_1164.all;
  use IEEE.std_logic_1164.all;
  use IEEE.numeric_std.all;
  use IEEE.numeric_std.all;
Library unisim;
--Library unisim;
  use unisim.vcomponents.all;
--  use unisim.vcomponents.all;
 
 
Entity vdu8 is
Entity vdu8 is
  generic(
  generic(
        VGA_CLK_FREQ           : integer := 25000000; -- HZ
        VGA_CLK_FREQ           : integer := 25000000; -- HZ
             VGA_HOR_CHARS          : integer := 80; -- CHARACTERS 25.6us
             VGA_HOR_CHARS          : integer := 80; -- CHARACTERS 25.6us

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