Hi folks, I'm doing a program involving 1 master and 2 slave controller. The master is able to send the slave's address but a NACK is detected. Somehow, the interrupt flag, SSPIF, is unable to set. Could any of the kind souls send me a source file .asm or help me solve the problem? Thanks in advance _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.