0001 2000                    head	equ  $2000
0002 2009                    tail	equ  $2009
0003                         
0004 200a                    	org  $200A
0005 200a 86 01              	ldaa #$01
0006 200c ce 20 00           	ldx  #head
0007                         
0008 200f a7 00              loop	staa 0,x
0009 2011 4c                 	inca
0010 2012 08                 	inx
0011 2013 8c 20 09           	cpx  #tail
0012 2016 26 f7              	bne  loop 