Hello, After reading AN1003 (USB interface to SD-card), I start thinking to use an SD card as a stand-alone application for data-logging in a new project. AN1003 is mentioning this as a possible application, referring to the FAT library. But on the MicroChip site I can not find any FAT library. Does anyone know, where I can find this library? Thanks Jens -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist