If any of you understand this please comment it ld b,8 loop1: push bc ld hl,$FC00 ld b,255 loop11: srl (hl) inc hl djnz loop11 ld b,255 loop12: srl (hl) inc hl djnz loop12 ld b,255 loop13: srl (hl) inc hl djnz loop13 ld b,255 loop14: srl (hl) inc hl djnz loop14 ei ld b,6 del_loop halt djnz del_loop di pop bc djnz loop1