> It seems straight forward when using the PIC and say FDTI USB-232 > convertor as a slave device (such as USB modem application), but I am > not sure on what is involved in using the PIC as a master to write to a > USB slave device. I assume it is similar to writing to other media (such > as a floppy disk) from an 8-bit micro. You need to read the USB spec. Being a master is *much* more complicated than being a slave. ***************************************************************** Embed Inc, embedded system specialists in Littleton Massachusetts (978) 742-9014, http://www.embedinc.com -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.