`default_nettype none disable implicit definitions by Verilog
//apio build --size 1k --type hx --pack vq100

module top( //top module and signals wired to FPGA pins
    CLK25MHz,
    vga_r,
    vga_g,
    vga_b,
    vga_hs,
    vga_vs,

    wclk,
    write_en,
    din,
	btnUp,
	btnDwn,
	btnLft,
	btnRgt,
	btnA,
	btnB
);

parameter addr_width = 15;
parameter data_width = 2;
reg [data_width-1:0] mem [(1<<addr_width)-1:0];

reg  [data_width-1:0] dout;
wire [addr_width-1:0] raddr;
reg  [addr_width-1:0] raddr_r = 0;
assign raddr = raddr_r;

input wclk;
input write_en;
input btnUp;
input btnDwn;
input btnLft;
input btnRgt;
input btnA;
input btnB;
reg   write_en_r;
input [data_width-1:0] din;
wire [addr_width-1:0] waddr;
reg  [addr_width-1:0] waddr_r = 0;
assign waddr = waddr_r;

always @(negedge wclk) // Write memory
begin
  if(write_en == 0 && write_en_r == 1) begin // VSYNC
    mem[0] <= din;
    waddr_r <= 1;
    write_en_r <= 0;
  end
  else begin
    mem[waddr] <= din;
    waddr_r <= waddr_r + 1; // Increment address
    if(write_en == 1) begin
      write_en_r <= 1;
    end
  end
end

input               CLK25MHz;   // Oscillator input 25MHz
output   [7:0]           vga_r;      // VGA Red 3 bit
output   [7:0]           vga_g;      // VGA Green 3 bit
output   [7:0]           vga_b;      // VGA Blue 3 bit
output              vga_hs;     // H-sync pulse
output              vga_vs;     // V-sync pulse

parameter h_pulse   = 96;   //H-SYNC pulse width 96 * 40 ns (25 Mhz) = 3.84 uS
parameter h_bp      = 48;   //H-BP back porch pulse width
parameter h_pixels  = 640;  //H-PIX Number of pixels horizontally
parameter h_fp      = 16;   //H-FP front porch pulse width
parameter h_pol     = 1'b0; //H-SYNC polarity
parameter h_frame   = 800;  //800 = 96 (H-SYNC) + 48 (H-BP) + 640 (H-PIX) + 16 (H-FP)
parameter v_pulse   = 2;    //V-SYNC pulse width
parameter v_bp      = 33;   //V-BP back porch pulse width
parameter v_pixels  = 480;  //V-PIX Number of pixels vertically
parameter v_fp      = 10;   //V-FP front porch pulse width
parameter v_pol     = 1'b1; //V-SYNC polarity
parameter v_frame   = 525;  //525 = 2 (V-SYNC) + 33 (V-BP) + 480 (V-PIX) + 10 (V-FP)
parameter rst		= 4'b1010;

reg      [7:0]           vga_r_r;  //VGA colour registers R,G,B x 3 bit
reg      [7:0]           vga_g_r;
reg      [7:0]           vga_b_r;
reg                 vga_hs_r; //H-SYNC register
reg                 vga_vs_r; //V-SYNC register

assign  vga_r       = vga_r_r; //assign the output signals for VGA to the VGA registers
assign  vga_g       = vga_g_r;
assign  vga_b       = vga_b_r;
assign  vga_hs      = vga_hs_r;
assign  vga_vs      = vga_vs_r;

reg					wantChoice = 0;
reg     [7:0]       timer_t = 8'b0; //8-bit timer with 0 initialisation
reg                 reset = 1;
reg     [9:0]       c_row;      //visible frame register row
reg     [9:0]       c_col;      //visible frame register column
reg     [9:0]       c_hor;      //complete frame register horizontally
reg     [9:0]       c_ver;      //complete frame register vertically
reg     [9:0]       scale_col;  //counter for scaling horizontally
reg     [9:0]       scale_row;  //counter for scaling vertically
reg		[3:0]		clrRegCnt = 4'b0000;	//Color counting registry

reg		[7:0]		color_r;
reg 	[7:0]		color_g;
reg 	[7:0]		color_b;

reg                 disp_en; //display enable flag

always @ (posedge CLK25MHz) begin

	if(btnA == 1) begin
		if(clrRegCnt <= rst) begin
			clrRegCnt <= clrRegCnt + 4'b0001;
			end
		else begin
			clrRegCnt <= 4'b0000;
		end
	end

    if(timer_t > 250) begin //generate 10 uS RESET signal
        reset <= 0;
    end
    else begin
        reset <= 1;              //while in reset display is disabled
        timer_t <= timer_t + 1;
        disp_en <= 0;
    end

    if(reset == 1) begin         //while RESET is high init counters
        c_hor <= 0;
        c_ver <= 0;
        vga_hs_r <= 1;
        vga_vs_r <= 0;
        c_row <= 0;
        c_col <= 0;
        scale_col <= 82;
        scale_row <= 27;
    end
    else begin //update current beam position
        if(c_hor < h_frame - 1) begin
            c_hor <= c_hor + 1;
        end
        else begin
            c_hor <= 0;
            if(c_ver < v_frame - 1) begin
                c_ver <= c_ver + 1;
            end
            else begin
                c_ver <= 0;
            end
        end
    end
    if(c_hor < h_pixels + h_fp + 1 || c_hor > h_pixels + h_fp + h_pulse) begin //H-SYNC generator
        vga_hs_r <= ~h_pol;
    end
    else begin
        vga_hs_r <= h_pol;
    end
    if(c_ver < v_pixels + v_fp || c_ver > v_pixels + v_fp + v_pulse) begin     //V-SYNC generator
        vga_vs_r <= ~v_pol;
    end
    else begin
        vga_vs_r <= v_pol;
    end
    if(c_hor < h_pixels) begin //c_col and c_row counters are updated only in the visible time-frame
        c_col <= c_hor;
    end
    if(c_ver < v_pixels) begin
        c_row <= c_ver;
    end
    if(c_hor < h_pixels && c_ver < v_pixels) begin //VGA colour signals are enabled only in the visible time frame
        disp_en <= 1;
    end
    else begin
        disp_en <= 0;
    end
    if(disp_en == 1 && reset == 0) begin

        dout <= mem[raddr]; // Read memory

        if(c_row == 0 && c_col == 0) begin //reset scaling
              scale_col <= 82;
              scale_row <= 27;
        end

        if(c_row == 23 && c_col == 639) begin //reset address
              raddr_r <= 0;
        end

        if(c_col == 0 && c_row > 21 && c_row < 453) begin //reset at the start of each line
              scale_col <= 82;
              if(c_row == scale_row) begin
                scale_row <= scale_row + 3;
              end
              else if(raddr_r != 0) begin
                //set pixel buffer address back to beginning of line
                raddr_r <= raddr_r - 160;
              end
        end

		if(c_col > 80 && c_col < 561 && c_row > 20 && c_row < 453) begin //centered 480 x 432 area

			if(c_col == scale_col && c_col < 560) begin
			  scale_col <= scale_col + 3;
			  //increment pixel buffer address horizontally
			  raddr_r <= raddr_r + 1;
			end

			if(clrRegCnt == 4'b0000) begin //Default GB theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'hF0;
				  color_g <= 8'h83;
				  color_b <= 8'hF0;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h03;
				  color_g <= 8'h26;
				  color_b <= 8'h03;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'hB8;
				  color_g <= 8'hCA;
				  color_b <= 8'hF0;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hB9;
				  color_g <= 8'hCB;
				  color_b <= 8'hF0;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0001) begin//Zelda DX Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'hA5;
				  color_g <= 8'h93;
				  color_b <= 8'h12;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'hB6;
				  color_g <= 8'hC8;
				  color_b <= 8'h24;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'hB7;
				  color_g <= 8'h6C;
				  color_b <= 8'hB7;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hFF;
				  color_g <= 8'hFF;
				  color_b <= 8'h5B;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0010) begin//Pokemanz Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h7E;
				  color_g <= 8'h8E;
				  color_b <= 8'h3F;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'hC8;
				  color_g <= 8'h38;
				  color_b <= 8'h3C;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h36;
				  color_g <= 8'HD4;
				  color_b <= 8'hF8;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'h21;
				  color_g <= 8'hB0;
				  color_b <= 8'h91;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0011) begin//Kirby Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'hC2;
				  color_g <= 8'hC2;
				  color_b <= 8'h69;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h77;
				  color_g <= 8'h33;
				  color_b <= 8'h7E;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h7E;
				  color_g <= 8'h68;
				  color_b <= 8'h68;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'h7F;
				  color_g <= 8'hEB;
				  color_b <= 8'h7F;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0100) begin//Metroid Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'hC2;
				  color_g <= 8'h71;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h40;
				  color_g <= 8'hE7;
				  color_b <= 8'h06;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h6B;
				  color_g <= 8'h52;
				  color_b <= 8'h85;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hEA;
				  color_g <= 8'hFD;
				  color_b <= 8'hE1;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0101) begin//Super mario 6 golden coins Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h00;
				  color_g <= 8'h00;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h11;
				  color_g <= 8'h6C;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'hFD;
				  color_g <= 8'h6A;
				  color_b <= 8'h77;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hFE;
				  color_g <= 8'h7F;
				  color_b <= 8'h6B;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0110) begin//Greyscale Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h00;
				  color_g <= 8'h00;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h76;
				  color_g <= 8'h76;
				  color_b <= 8'h76;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h6B;
				  color_g <= 8'h6B;
				  color_b <= 8'h6B;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hFF;
				  color_g <= 8'hFF;
				  color_b <= 8'hFF;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b0111) begin//MegaMan Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'hE1;
				  color_g <= 8'h00;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'hE9;
				  color_g <= 8'h00;
				  color_b <= 8'h00;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h7F;
				  color_g <= 8'hE8;
				  color_b <= 8'h05;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hEC;
				  color_g <= 8'h7F;
				  color_b <= 8'h7F;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b1000) begin//GRAPEFRUIT Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h56;
				  color_g <= 8'h92;
				  color_b <= 8'hC6;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h7B;
				  color_g <= 8'h56;
				  color_b <= 8'h19;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h4F;
				  color_g <= 8'h2B;
				  color_b <= 8'hB6;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'hFF;
				  color_g <= 8'h5F;
				  color_b <= 8'hDD;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b1001) begin//SUPER GB Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h33;
				  color_g <= 8'hE1;
				  color_b <= 8'h05;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h6A;
				  color_g <= 8'h73;
				  color_b <= 8'h52;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h6D;
				  color_g <= 8'hE8;
				  color_b <= 8'h94;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'h7F;
				  color_g <= 8'h7E;
				  color_b <= 8'h6C;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end

			if(clrRegCnt == 4'b1010) begin//SPACEHAZE Theme
				if(dout == 3) begin //check pixel buffer data
				  color_r <= 8'h33;
				  color_g <= 8'hC2;
				  color_b <= 8'h05;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 2) begin
				  color_r <= 8'h64;
				  color_g <= 8'h78;
				  color_b <= 8'hF8;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else if(dout == 1) begin
				  color_r <= 8'h49;
				  color_g <= 8'h3E;
				  color_b <= 8'h44;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
	            else begin
				  color_r <= 8'h2E;
				  color_g <= 8'h3F;
				  color_b <= 8'h4E;
	              vga_r_r <= color_r[7:0];
	              vga_g_r <= color_g[7:0];
	              vga_b_r <= color_b[7:0];
	            end
			end



			/*if(clrRegCnt == 3'b010) begin//SM6GC Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b000000000000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b100011000000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b110110101110;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b111011111011;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end

			if(clrRegCnt == 3'b011) begin//METROID Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b110010000000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b000011101100;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b101110001010;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b101011011000;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end

			if(clrRegCnt == 3'b100) begin//2bit BW Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b000000000000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b110011001100;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b101110111011;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b111111111111;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end

			if(clrRegCnt == 3'b101) begin//Pokemon Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b100010001000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b100011101001;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b111110111000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b111111101111;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end

			if(clrRegCnt == 3'b110) begin//Choco Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b111111011011;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b110110101010;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b101011001000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b100010001100;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end

			if(clrRegCnt == 3'b111) begin//Choco Theme
				if(dout == 3) begin //check pixel buffer data
				  color <= 12'b110011001000;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0]; // BLUE
	            end
	            else if(dout == 2) begin
				  color <= 12'b111010101110;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; // GREEN
	              vga_b_r <= color[3:0];
	            end
	            else if(dout == 1) begin
				  color <= 12'b110010001100;
	              vga_r_r <= color[11:8];
	              vga_g_r <= color[7:4]; //  GREEN
	              vga_b_r <= color[3:0]; // + BLUE = CYAN
	            end
	            else begin
				  color <= 12'b100011011111;
	              vga_r_r <= color[11:8]; // BLACK
	              vga_g_r <= color[7:4];
	              vga_b_r <= color[3:0];
	            end
			end
		end
		else begin //everything else is black
			vga_r_r <= 0;
			vga_g_r <= 0;
			vga_b_r <= 0;
		end
	end
	else begin //when display is not enabled everything is black
		vga_r_r <= 0;
		vga_g_r <= 0;
		vga_b_r <= 0;
	end

end
endmodule