At 14:47 2001-06-01, you wrote: >copybytes: > ld (hl),a > inc hl > ld a,$ff ;write $ff to all the other bytes > djnz copybytes ld (hl),$ff doesn't exist? if it doesn't you should anyway put ld a,$ff outside of the loop and do an extra ld (hl),a, otherwise it is a slowdown. we are optimizing for speed here, not size. ///Olle