Plan 9 and C but there is some good info in these videos: https://www.youtube.com/@adventuresin9797/search?query=usb https://www.youtube.com/@adventuresin9797/s

Plan 9 and C but there is some good info in these videos: https://www.youtube.com/@adventuresin9797/search?query=usb https://www.youtube.com/@adventuresin9797/search?query=usb