#zxspectrumbot {A}
ld b,0
o:ld h,64
ld d,0
ld a,r
ld e,a
g:ld a,(de)
inc de
cp b
rl c
ld (hl),c
inc hl
inc hl
inc l
ld a,h
cp $5b
jr c,g
inc b
jr o