To all, I forget who, but someone asked about the info on chamberlin's book. Here it is: "Musical Applications Of Microprocessors" Hal Chamberlin 2nd Ed. Hayden Books #045768 ISBN: 0-672-45768-7 Tim Ressel -- Hardware DQ Hewlett-Packard Verifone Division 916-630-2541 tim_r1 at verifone.com