add mode FF

source/app.d

@@ -12,7 +12,12 @@ Usage: %s {operation} [args]
 Operations:
 	asm {file} [-o {file}]
 		Compiles an assembly file to machine code
-		-o : Sets output binary file
+
+		Flags:
+		    -o : Sets output binary file
+		    -t : Show lexer output
+		    -a : parser output
+		    -l : Show label addresses
 
 	run {file}
 		Runs the given file in the emulator

source/computer.d

@@ -804,6 +804,10 @@ int ComputerCLI(string[] args) {
 					++ deviceTop;
 					break;
 				}
+				case "--dont": { // Don't
+					display.enableFF = true;
+					break;
+				}
 				default: {
 					stderr.writefln("Unknown flag '%s'", args[i]);
 					return 1;

source/devices/graphicsController.d

@@ -93,6 +93,10 @@ class GraphicsController : Device {
 						computer.display.resolution = Vec2!int(320, 240);
 						break;
 					}
+					case 0xFF: {
+						computer.display.resolution = Vec2!int(1920, 1080);
+						break;
+					}
 					default: break;
 				}
 

source/display.d

@@ -17,6 +17,7 @@ class Display {
 	SDL_Texture*  texture;
 	uint[]        pixels;
 	Vec2!int      resolution;
+	bool          enableFF;
 
 	this() {
 
@@ -223,6 +224,29 @@ class Display {
 				}
 				break;
 			}
+			case 0xFF: {
+				if (!enableFF) goto default;
+
+				uint pixelAddr   = 0x000405;
+				uint pixelEnd    = pixelAddr + (1920 * 1080 * 3);
+				auto expectedRes = Vec2!int(1920, 1080);
+
+				if (resolution != expectedRes) {
+					deathColour = SDL_Color(0, 0, 255, 255);
+					goto default;
+				}
+
+				SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+				SDL_RenderClear(renderer);
+
+				for (uint i = pixelAddr; i < pixelEnd; i += 3) {
+					uint offset = i - pixelAddr;
+					pixels[offset] = ColourToInt(
+						computer.ram[i], computer.ram[i + 1], computer.ram[i + 2]
+					);
+				}
+				break;
+			}
 			default: {
 				dead = true;
 				SDL_SetRenderDrawColor(