@@ -432,20 +432,28 @@ handle_events(Uxn *u)

 static int

 run(Uxn *u)

 {

-	Uint64 now = SDL_GetPerformanceCounter(), frame_end = now, frame_interval = SDL_GetPerformanceFrequency() / 60;

-	for(; !u->dev[0x0f]; now = SDL_GetPerformanceCounter()) {

+	Uint64 now = SDL_GetPerformanceCounter(), frame_end, frame_interval = SDL_GetPerformanceFrequency() / 60;

+	for(;;) {

+		/* .System/halt */

+		if(u->dev[0x0f])

+			return error("Run", "Ended.");

+		frame_end = now + frame_interval;

 		exec_deadline = now + deadline_interval;

 		if(!handle_events(u))

 			return 0;

-		if(((Sint64)(frame_end - SDL_GetPerformanceCounter())) <= 0) {

-			frame_end = now + frame_interval;

-			uxn_eval(u, GETVEC(&u->dev[0x20]));

-		}

+		uxn_eval(u, GETVEC(&u->dev[0x20]));

 		if(uxn_screen.fg.changed || uxn_screen.bg.changed)

 			redraw();

-		SDL_WaitEventTimeout(NULL, GETVEC(&u->dev[0x20]) ? (frame_end - SDL_GetPerformanceCounter()) / ms_interval : 0x100000);

+		now = SDL_GetPerformanceCounter();

+		if(u->dev[0x20]) {

+			if(!BENCH && ((Sint64)(frame_end - now)) > 0) {

+				SDL_Delay((frame_end - now) / ms_interval);

+				now = frame_end;

+			}

+		} else

+			SDL_WaitEvent(NULL);

 	}

-	return error("Run", "Ended.");

+	return error("SDL_WaitEvent", SDL_GetError());;

 }

 int