| Line 124... |
Line 124... |
-- 0.3 John Kent 2007-02-07 Added generics for VGA Timing
|
-- 0.3 John Kent 2007-02-07 Added generics for VGA Timing
|
--
|
--
|
-- 0.4 John Kent 2010-07-03 Added GPL notice.
|
-- 0.4 John Kent 2010-07-03 Added GPL notice.
|
-- Updated description.
|
-- Updated description.
|
-- Rearranged Video Timing
|
-- Rearranged Video Timing
|
--
|
-- 0.5 David Burnette 2021-02-19 Changed video memory to use parameterized block
|
|
-- memory instead of instantiating hard ram macros.
|
|
|
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;
|
| Line 267... |
Line 268... |
data_in : in std_logic_vector (7 downto 0);
|
data_in : in std_logic_vector (7 downto 0);
|
data_out : out std_logic_vector (7 downto 0)
|
data_out : out std_logic_vector (7 downto 0)
|
);
|
);
|
end component;
|
end component;
|
|
|
-- component ram_2k
|
|
-- port (
|
|
-- clk : in std_logic;
|
|
-- rst : in std_logic;
|
|
-- cs : in std_logic;
|
|
-- rw : in std_logic;
|
|
-- addr : in std_logic_vector (10 downto 0);
|
|
-- data_in : in std_logic_vector (7 downto 0);
|
|
-- data_out : out std_logic_vector (7 downto 0)
|
|
-- );
|
|
-- end component;
|
|
|
|
component block_spram
|
component block_spram
|
generic (
|
generic (
|
dwidth : integer := 8; -- parameterized data width
|
dwidth : integer := 8; -- parameterized data width
|
awidth : integer := 16 -- parameterized address width
|
awidth : integer := 16 -- parameterized address width
|
| Line 312... |
Line 302... |
);
|
);
|
|
|
--
|
--
|
-- Character buffer RAM
|
-- Character buffer RAM
|
--
|
--
|
--char_buff_ram : ram_2k port map(
|
|
-- clk => vga_clk,
|
|
-- rst => vdu_rst,
|
|
-- cs => vga_cs,
|
|
-- rw => vga_rw,
|
|
-- addr => vga_addr,
|
|
-- data_in => reg_character,
|
|
-- data_out => vga_data_out
|
|
-- );
|
|
char_buff_ram : block_spram
|
char_buff_ram : block_spram
|
generic map( dwidth => 8, awidth => 11) -- 2k bytes
|
generic map( dwidth => 8, awidth => 11) -- 2k bytes
|
port map(
|
port map(
|
clk => vga_clk,
|
clk => vga_clk,
|
cs => vga_cs,
|
cs => vga_cs,
|
| Line 336... |
Line 317... |
|
|
|
|
--
|
--
|
-- Attribute buffer RAM
|
-- Attribute buffer RAM
|
--
|
--
|
--attr_buff_ram : ram_2k port map(
|
|
-- clk => vga_clk,
|
|
-- rst => vdu_rst,
|
|
-- cs => vga_cs,
|
|
-- rw => vga_rw,
|
|
-- addr => vga_addr,
|
|
-- data_in => reg_colour,
|
|
-- data_out => attr_data_out
|
|
-- );
|
|
attr_buff_ram : block_spram
|
attr_buff_ram : block_spram
|
generic map( dwidth => 8, awidth => 11) -- 2k bytes
|
generic map( dwidth => 8, awidth => 11) -- 2k bytes
|
port map(
|
port map(
|
clk => vga_clk,
|
clk => vga_clk,
|
cs => vga_cs,
|
cs => vga_cs,
|
