Hrm, this implies that to communicate without regard to clock accuracy one could reduce to one bit per word, and then the receiver could determine the rate by measuring a start bit time ... is there a name for this form of protocol? -- James Cameron mailto:quozl@us.netrek.org http://quozl.netrek.org/ -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.