On Jul 10, 2008, at 6:15 PM, Xiaofan Chen wrote: > There are firmware based USB implementations on the AVR but none of > them are USB compliant. In what ways are they not compliant? (Aside from picking ID numbers and such out of thin air, probably.) Not defending; just curious... BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist