Which books are you talking about? I received two books that were full of electronic diagrams. On Fri, 9 Jan 1998 17:42:44 -0600 "Trey Jazz" <joemama@minot.com> writes: > >go to www.zilog.com and order the z80 books, they have runthroughs of >all >the functions and a listing of all the functions and tells you the >flags, >etc. that they can be used with