Codes are released under each license. See heading of each file for details.

Modified BSD license:
    ps2.c
    ps2.h
    adb.c
    adb.h

GPLv2 or later:
    other codes

PJRC's license:
    print.c
    print.h
    pjrc/

GPLv2 or GPLv3 or OBJECTIVE DEVELOPMENT's commercial license:
    vusb/




This software includes following codes from other parties.
    - V-USB from OBJECTIVE DEVELOPMENT
        http://www.obdev.at/products/vusb/index.html
    - Teensy example codes from PJRC
        http://www.pjrc.com/teensy/