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Sprite_Initializer.v
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Sprite_Initializer.v
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module Sprite_Initializer(
input clk,
input rst,
output reg dis,
output reg [12:0] addr,
output reg [7:0] data,
output reg we
);
reg [12:0] addr_counter;
reg [9:0] color_counter;
reg [7:0] color;
reg write;
parameter [7:0] WHITE = 8'b11111111,
GREEN = 8'b00011100,
RED = 8'b11100000,
BLUE = 8'b00000011,
ORANGE = 8'b11101100,
YELLOW = 8'b11111100,
PURPLE = 8'b11100011,
SKY_BLUE = 8'b00011111,
BLACK = 8'b00000000;
always @(clk)
begin
if (rst)
begin
dis <= 1'b1;
addr <= 13'b0;
data <= WHITE;
we <= 1'b0;
write <= 1'b0;
addr_counter <= 13'b0;
color_counter <= 10'b0;
color <= WHITE;
end
else
begin
if (color_counter == 10'd576)
begin
case (color)
WHITE:
begin
color_counter <= 10'd0;
color <= GREEN;
end
GREEN:
begin
color_counter <= 10'd0;
color <= RED;
end
RED:
begin
color_counter <= 10'd0;
color <= BLUE;
end
BLUE:
begin
color_counter <= 10'd0;
color <= ORANGE;
end
ORANGE:
begin
color_counter <= 10'd0;
color <= YELLOW;
end
YELLOW:
begin
color_counter <= 10'd0;
color <= PURPLE;
end
PURPLE:
begin
color_counter <= 10'd0;
color <= SKY_BLUE;
end
SKY_BLUE:
begin
color_counter <= 10'd0;
color <= BLACK;
end
BLACK:
begin
color_counter <= color_counter;
we <= 1'b0;
dis <= 1'b0;
color <= color;
end
default:
color <= BLACK;
endcase
end
else
begin
if (write == 1'b0)
begin
we <= 1'b1;
addr_counter <= addr_counter + 1'b1;
color_counter <= color_counter + 1'b1;
data <= color;
write <= 1'b1;
end
else
begin
we <= 1'b0;
addr <= addr_counter;
write <= 1'b0;
end
end
end
end
endmodule