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palette.sv
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module palette(input logic [3:0] color,
input logic isnight,
output logic [7:0] Red, Green, Blue);
//The palette module is used to map the color index into RGB values
//The colors used in the project includes:
//0: '0x800080', (purple, which represents transparent pixel)
//1: '0xEFEFEF',
//2: '0xF0F0F0',
//3: '0xF6F6F6',
//4: '0xF7F7F7',
//5: '0xF8F8F8',
//6: '0xFEFEFE',
//7: '0xFFFFFF',
//8: '0x535353',
//9: '0xB9B9B9',
//a: '0xDADADA',
//b: '0xFF9000',
//c: '0x600000',
//d: '0x000000',
//e: '0xFF0000'.
always_comb
begin
if (~isnight)
begin
case (color)
4'h0: //Transparent
begin
Red = 8'h80;
Green = 8'h00;
Blue = 8'h80;
end
4'h1:
begin
Red = 8'hEF;
Green = 8'hEF;
Blue = 8'hEF;
end
4'h2:
begin
Red = 8'hF0;
Green = 8'hF0;
Blue = 8'hF0;
end
4'h3:
begin
Red = 8'hF6;
Green = 8'hF6;
Blue = 8'hF6;
end
4'h4: //Background Color
begin
Red = 8'hA0; //F7; originally
Green = 8'hA0; //F7; originally
Blue = 8'hA0; //F7; originally
end
4'h5:
begin
Red = 8'hF8;
Green = 8'hF8;
Blue = 8'hF8;
end
4'h6:
begin
Red = 8'hFE;
Green = 8'hFE;
Blue = 8'hFE;
end
4'h7:
begin
Red = 8'hFF;
Green = 8'hFF;
Blue = 8'hFF;
end
4'h8:
begin
Red = 8'h53;
Green = 8'h53;
Blue = 8'h53;
end
4'h9:
begin
Red = 8'hB9;
Green = 8'hB9;
Blue = 8'hB9;
end
4'hA:
begin
Red = 8'hDA;
Green = 8'hDA;
Blue = 8'hDA;
end
4'hB:
begin
Red = 8'hFF;
Green = 8'h90;
Blue = 8'h00;
end
4'hC:
begin
Red = 8'h60;
Green = 8'h00;
Blue = 8'h00;
end
4'hD:
begin
Red = 8'h00;
Green = 8'h00;
Blue = 8'h00;
end
4'hE: //Red
begin
Red = 8'hFF;
Green = 8'h00;
Blue = 8'h00;
end
default: //Give black
begin
Red = 8'h00;
Green = 8'h00;
Blue = 8'h00;
end
endcase
end
else //Night
begin
case (color)
4'h0: //Transparent
begin
Red = 8'h80;
Green = 8'h00;
Blue = 8'h80;
end
4'h1:
begin
Red = 8'h1F;
Green = 8'h1F;
Blue = 8'h1F;
end
4'h2:
begin
Red = 8'h00;
Green = 8'h00;
Blue = 8'h00;
end
4'h3:
begin
Red = 8'h06;
Green = 8'h06;
Blue = 8'h06;
end
4'h4: //Background Color: At night is #202020
begin
Red = 8'h20;
Green = 8'h20;
Blue = 8'h20;
end
4'h5:
begin
Red = 8'h08;
Green = 8'h08;
Blue = 8'h08;
end
4'h6:
begin
Red = 8'h0E;
Green = 8'h0E;
Blue = 8'h0E;
end
4'h7:
begin //White become black.
Red = 8'h00;
Green = 8'h00;
Blue = 8'h00;
end
4'h8: //At night is #ACACAC
begin
Red = 8'hAC;
Green = 8'hAC;
Blue = 8'hAC;
end
4'h9:
begin
Red = 8'h49;
Green = 8'h49;
Blue = 8'h49;
end
4'hA:
begin
Red = 8'hDA;
Green = 8'hDA;
Blue = 8'hDA;
end
4'hB:
begin
Red = 8'hFF;
Green = 8'h90;
Blue = 8'h00;
end
4'hC:
begin
Red = 8'h60;
Green = 8'h00;
Blue = 8'h00;
end
4'hD:
begin
Red = 8'hFF;
Green = 8'hFF;
Blue = 8'hFF;
end
4'hE: //Red
begin
Red = 8'hFF;
Green = 8'h00;
Blue = 8'h00;
end
default: //Give black
begin
Red = 8'h00;
Green = 8'h00;
Blue = 8'h00;
end
endcase
end
end
endmodule