Can't do these: ld (nnnn),n ld (nnnn),r (except a) ld (rr),r (except a) Only these: ld (nnnn),a ld (nnnn),rr ld (hl),n ld (hl),r ld (rr),a nnnn = address n = number r = register rr = register pair a = register a _________________________________________________________________ Join the world’s largest e-mail service with MSN Hotmail. http://www.hotmail.com