| Line 42... |
Line 42... |
//// ////
|
//// ////
|
////////////////////////////////////////////////////////////////////////////
|
////////////////////////////////////////////////////////////////////////////
|
|
|
`include "timescale.v"
|
`include "timescale.v"
|
|
|
module vga_controller ( reset, clk_50, line, vert_counter, SW, VGA_R, VGA_G, VGA_B, LEDR, VGA_VS, VGA_HS);
|
module vga_controller ( reset_n, clk_50, line, vert_counter, SW, VGA_R, VGA_G, VGA_B, LEDR, VGA_VS, VGA_HS);
|
|
|
input reset;
|
input reset_n;
|
input clk_50;
|
input clk_50;
|
input [8:0] SW;
|
input [8:0] SW;
|
input [479:0] line;
|
input [479:0] line;
|
input [4:0] vert_counter;
|
input [4:0] vert_counter;
|
output reg [3:0] VGA_R;
|
output reg [3:0] VGA_R;
|
| Line 63... |
Line 63... |
reg [9:0] vc;
|
reg [9:0] vc;
|
reg vsenable;
|
reg vsenable;
|
wire vidon;
|
wire vidon;
|
|
|
assign LEDR[8:0] = SW;
|
assign LEDR[8:0] = SW;
|
assign LEDR[9] = reset;
|
assign LEDR[9] = reset_n;
|
|
|
always @ (posedge clk_50 or negedge reset)
|
always @ (posedge clk_50 or negedge reset_n)
|
begin
|
begin
|
if (!reset) begin
|
if (!reset_n) begin
|
clk_25 <= 0;
|
clk_25 <= 0;
|
end
|
end
|
else begin
|
else begin
|
clk_25 <= !clk_25;
|
clk_25 <= !clk_25;
|
end
|
end
|
end
|
end
|
|
|
always @ (posedge clk_25 or negedge reset)
|
always @ (posedge clk_25 or negedge reset_n)
|
begin
|
begin
|
if (!reset) begin
|
if (!reset_n) begin
|
hc <= 0;
|
hc <= 0;
|
VGA_HS <= 1;
|
VGA_HS <= 1;
|
vsenable <= 0;
|
vsenable <= 0;
|
end
|
end
|
else if (hc < 640) begin
|
else if (hc < 640) begin
|
| Line 109... |
Line 109... |
hc <= 0;
|
hc <= 0;
|
vsenable <= 1;
|
vsenable <= 1;
|
end
|
end
|
end
|
end
|
|
|
always @ (posedge clk_25 or negedge reset)
|
always @ (posedge clk_25 or negedge reset_n)
|
begin
|
begin
|
if (!reset) begin
|
if (!reset_n) begin
|
vc <= 0;
|
vc <= 0;
|
VGA_VS <= 1;
|
VGA_VS <= 1;
|
end
|
end
|
else begin
|
else begin
|
if (vsenable == 1) begin
|
if (vsenable == 1) begin
|
| Line 140... |
Line 140... |
end
|
end
|
end
|
end
|
|
|
always @ (posedge clk_25)
|
always @ (posedge clk_25)
|
begin
|
begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 0;
|
if (vidon == 1) begin
|
if (vidon == 1) begin
|
if (hc < 40) begin
|
if (hc < 40) begin
|
if (vert_counter < 10) begin
|
if (vc < 30) begin
|
|
if (vert_counter == 1) begin
|
/*VGA_R[0] <= line[hc*12];
|
/*VGA_R[0] <= line[hc*12];
|
VGA_R[1] <= line[hc*12+1];
|
VGA_R[1] <= line[hc*12+1];
|
VGA_R[2] <= line[hc*12+2];
|
VGA_R[2] <= line[hc*12+2];
|
VGA_R[3] <= line[hc*12+3];
|
VGA_R[3] <= line[hc*12+3];
|
VGA_G[0] <= line[hc*12+4];
|
VGA_G[0] <= line[hc*12+4];
|
| Line 168... |
Line 181... |
VGA_B[0] <= 1;
|
VGA_B[0] <= 1;
|
VGA_B[1] <= 0;
|
VGA_B[1] <= 0;
|
VGA_B[2] <= 1;
|
VGA_B[2] <= 1;
|
VGA_B[3] <= 0;
|
VGA_B[3] <= 0;
|
end
|
end
|
else begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 0;
|
|
end
|
end
|
end
|
end
|
else begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 0;
|
|
end
|
end
|
|
|
/* if (vc < 240) begin
|
|
VGA_R[0] <= 1;
|
|
VGA_G[0] <= 1;
|
|
VGA_B[0] <= 1;
|
|
VGA_R[1] <= 1;
|
|
VGA_G[1] <= 1;
|
|
VGA_B[1] <= 1;
|
|
VGA_R[2] <= 1;
|
|
VGA_G[2] <= 1;
|
|
VGA_B[2] <= 1;
|
|
VGA_R[3] <= 1;
|
|
VGA_G[3] <= 1;
|
|
VGA_B[3] <= 1;
|
|
end
|
|
else begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 1;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 1;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 1;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 1;
|
|
end
|
|
end
|
|
else begin
|
|
if (vc < 240) begin
|
|
VGA_R[0] <= 1;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 1;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 1;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 1;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 0;
|
|
end
|
|
else begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 1;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 1;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 1;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 1;
|
|
VGA_B[3] <= 0;
|
|
end
|
|
end
|
|
end
|
|
*/
|
|
end
|
|
else begin
|
|
VGA_R[0] <= 0;
|
|
VGA_G[0] <= 0;
|
|
VGA_B[0] <= 0;
|
|
VGA_R[1] <= 0;
|
|
VGA_G[1] <= 0;
|
|
VGA_B[1] <= 0;
|
|
VGA_R[2] <= 0;
|
|
VGA_G[2] <= 0;
|
|
VGA_B[2] <= 0;
|
|
VGA_R[3] <= 0;
|
|
VGA_G[3] <= 0;
|
|
VGA_B[3] <= 0;
|
|
end
|
|
|
|
end
|
end
|
|
|
assign vidon = (hc < 640 && vc < 480) ? 1 : 0;
|
assign vidon = (hc < 640 && vc < 480) ? 1 : 0;
|
|
|
endmodule
|
endmodule
|
