I will sun relies a new optimized LaPlace to TI-92 (LaPlace92), with som new Bode-Plot facilities. Because I do not own a TI-89, I can not test the programs on it and TI-89 users will probably not be able to use them. If you are interested in corporating with me in testing these programs and make them available to TI-89 users send me a e-mail. You have to know your TI-89 very well.