No, it still contains 1. I think he was thinking it'd contain 0, like CP would do 1-1. Before this ld a,1 ld (hl),a So I think that yes, it would contain 1 :) > > > ld a,(hl) > > > cp 1 ...........does a now contain 1 > > > > Yes. CP only sets the flags, it does not change the value of anything. > > > > > uh...that would be no, then :-)