Div16by16:
    ld  a,h
    ld  c,l
    ld  hl,0
    ld  b,16
__Div16by16_Loop:
    scf
    rl  c
    rla
    adc hl,hl
    sbc hl,de
    jr  nc,__Div16by16_Skip
    add hl,de
    dec c
__Div16by16_Skip:
    djnz    __Div16by16_Loop
    ld  h,a
    ld  l,c
    ret