If the PLL is enabled, I assume that the Fosc, as referenced for calculating baud rate errors, is the 4X crystal value? ie... 4MHz crystal yields 16MHz internal, so thats whats used in the formula. __________________________________ Yahoo! Mail Mobile Take Yahoo! Mail with you! Check email on your mobile phone. http://mobile.yahoo.com/learn/mail -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist