> i have chip H8/3437 > http://crio.mib.infn.it/wig/electronics/Componenti/Hitachi/Microcontrollori/h33to006d1.pdf > > this one is with two registers for i2c > i did try other chips and didn't finde any think. It doesn't even look like an i2c chip to me. Searching the datasheet for "i2c", "Philips" or "smbus" didn't return anything. Why do you think it is an i2c chip? -- Jean Delvare http://khali.linux-fr.org/