In a message dated 11/23/98 4:18:14 AM Pacific Standard Time, peterw@WAYBEAT.COM.AU writes: << So, what techniques are people using to make sure that the salve pics always detect the start bit of a host request message even tho they might be in the middle of doing something ?? >> A goo interupt driven serial routine will do this. You can also use a hardware UART to generate the interupt. Maxim makes a cute little UART for embedded applications. (MAX3100) Dave Duley