Hi, everything is working fine. I got the backpack working perfectly as I always wanted. I am very thankful mainly to Joe s. the promoter and secondly to Steve , Melanie and Mr. Darrel who perfected the program and gave me so much help. I apologize to all because to my bad English, I am from the Caribbean and English is my second language. This serial backpack will serve for my experimental board. I was using a parallel 2X20 but too many pins were required. Now I only need one pin. Thanks to all of you again. This forum, it's great place to learn !!!