Gunfright: Routine at D6DB

D6DB: Clear Screen

Used by the routines at CheckTopScore, ShowPlayerNumber, GameMenu, ShowGameOver and DrawGameScreen. Clears the pixel bytes of the screen.
ClearScreen	D6DB	LD HL,$4000	Point HL at 4000 (in the screen buffer).
	D6DE	LD BC,$1800	Set the number of bytes.
Continue on to FillMemory. View the equivalent code in; Alien 8 Atic Atac Cookie Cyberun Jetpac Knight Lore Lunar Jetman Nightshade Pssst Sabre Wulf Tranz Am