Consider the 17C44 used in Microprocessor mode i.e. unprogrammed with external eprom. I do not have access to a programmer for this device, ( only a Picstart 16b ) but do have a 27 series Eprom programmer. Does anyone know if the configuration bits can be programmed in the Eprom as it would be desirable to use a low frequency crystal ( 32KHz) to save power. ---------------------------------------------------------- Mike Hogben. Senior Engineer. mah@itl.co.uk.