CopyRange:
CopyRangeUnsafe: 
  ; hl is source
  ; de is destination
  ; bc is length to copy
  ld a, b 
  or a, c
  ret z
.loop
  ld a, [hl+]
  ld [de], a
  inc de
  dec bc
  ld a, b
  or a, c ; check if bc is zero
  jp nz, .loop
  
  ret
  
CopyRangeBy8s: 
CopyRangeUnsafeBy8s:
  ; hl is source
  ; de is destination
  ; bc is 1/8 of length to copy!!!
  ; so like this will copy 8*bc bytes!
  ld a, b 
  or a, c
  ret z
.loop
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  ld a, [hl+]
  ld [de], a
  inc de
  dec bc
  ld a, b
  or a, c ; check if bc is zero
  jp nz, .loop
  ret