Content in ROM

Thanks Tricky for your respond.

Yes. I already did the .mif file. The .mif file contained decimal number 128 and 0. I already got the VGA controller. Here is my coding. The problem is the FPGA seems not read in this part "IF (Q = "10000000")". It only display black color which is in when Q=0. I define when Q =128 (decimal) the RGB will set as white color and when Q = 0, the RGB will set as black color.

LIBRARY ieee;

USE ieee.std_logic_1164.all;

ENTITY hw_image_generator IS

GENERIC(

pixels_y : INTEGER := 478; --row that first color will persist until

pixels_x : INTEGER := 478); --column that first color will persist until

PORT(

disp_ena : IN STD_LOGIC; --display enable ('1' = display time, '0' = blanking time)

row : IN INTEGER; --row pixel coordinate

column : IN INTEGER; --column pixel coordinate

red : OUT STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0'); --red magnitude output to DAC

green : OUT STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0'); --green magnitude output to DAC

blue : OUT STD_LOGIC_VECTOR(7 DOWNTO 0) := (OTHERS => '0'); --blue magnitude output to DAC

Q : in std_logic_vector (7 downto 0));

END hw_image_generator;

ARCHITECTURE behavior OF hw_image_generator IS

begin

PROCESS(disp_ena, row, column, Q)

BEGIN

IF(disp_ena = '1') THEN --display time

IF(row < pixels_y AND column < pixels_x) THEN

IF (Q = "10000000") THEN

red <= (OTHERS => '1');----white

green <= (OTHERS => '1') ;---white

blue <= (OTHERS => '1');---white

ELSE

red <= (OTHERS => '0');

green <= (OTHERS => '0') ;

blue <= (OTHERS => '0');

END IF;

ELSE

red <= (OTHERS => '0');

green <= (OTHERS => '1');

blue <= (OTHERS => '0');

END IF;

ELSE --blanking time

red <= (OTHERS => '0');

green <= (OTHERS => '1');

blue <= (OTHERS => '0');

END IF;

END PROCESS;

END behavior;