# assumes %bx has loop count in it

.main
.top	
# critical section
mov 2000, %ax  # get 'value' at address 2000
add $1, %ax    # increment it
mov %ax, 2000  # store it back

# see if we're still looping
sub  $1, %bx
test $0, %bx
jgt .top	

halt