Hi, The following will set up the processor as you want. It is NOT the way I usually do it. But, it is EXACTLY what you asked for. Beware of the defaults that are NOT set here. I don't do I2C mode so I can not help you. I use SPI and it works better and faster and larger for me. Not trival to set up but I do like it. BTW: I now can make the 25LC640 (64K bit SPI) work!!!!! (reliably.) GL, Walt WA6FEC ;*************************************************************** ;* Setup configuration * ;* Processor: Microcontroller mode * ;* Watchdog timer; Disabled * ;* Brown-out reset: Disabled * ;* Oscillator Mode: Crystal/Resonator * ;* * ;* Please see page 190 of the PIC17C7XX Data Sheet book * ;* * ;* http://www.microchip.com/10/Faqs/tSupport * ;* /PICmicro/Protect/index.htm * ;* * ;* These bits defined at the end of p17c756.inc * ;* Also see pg 29 of MPASM USER'S GUIDE. * ;* * ;*************************************************************** __config _MC_MODE&_WDT_OFF&_BODEN_OFF&_XT_OSC -----Original Message----- From: Ismael M. Khangane [mailto:ismaelm@IAI.CSIC.ES] Sent: Friday, January 07, 2000 2:26 AM To: PICLIST@MITVMA.MIT.EDU Subject: How can I configure PIC17C756? Hi to all, I have a problem of making a routine or lines whereby I can configure a PIC17C756 in microcontroller, disable a wtd and boden and configuring a clock in XT. Is there a help out there? Also is it necessary whenever u want to txmit start, address, data and stop bit to reload the BRG for I2C- Master mode?