I found out a file in my hard disk named fsusb_demo_linux.c written by Manuel Bessler but I forgot where I got it. I slightly modified the source code and hope it will be working on both Linux and Windows. However right now it is only working under Linux. The Windows version fsusb_demo.exe does not work right now. Together with fsusb, it is the replacement for Microchip's close source PDFUSB.exe PC application (PICDEM FS USB demo tool). For those interested, please go to Microchip Forum USB section. By the way, Microchip Forum is actually quite good in areas like dsPIC, MPLAB C18, MPLAB C30, USB and which are not covered so much in PIClist. http://forum.microchip.com/tm.asp?m=107340 Regards, Xiaofan -----Original Message----- From: Chen Xiao Fan Sent: Saturday, August 06, 2005 8:32 PM I have uploaded my file to Microchip forum so that everyone can download the source code and the build instruction. The compiled application is included as well. To use it, you still need to download libusb-win32 device driver or the libusb-win32 filter driver (us together with Microchip driver) from the libusb-win32 website. The URL is http://forum.microchip.com/tm.asp?m=106426. Regards, Xiaofan -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist