I need to develop an application using a PC as the master on a multi-drop network. I understand that if I use a PIC which includes an AUSART and use 9bit data then I can address the circuit. What I am struggling to find is how I would set the address the circuit would respond to. I am hoping to be able to set the address with a specific command. Can anyone help please? Stew -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist