h6. [[Programmer's Reference Manuals]] h6(. » [[Service Calls|Part 16 – Service Calls]] h6((. » [[Service_USB]] h6(((. » Service_USB 4 h2. Service_USB 4 h5. (Service &D2) |_<^{width:4em}. Entry | | |<^. R0 |<^. 4| |<^. R1 |<^. 210 (&D2)| |_<^{width:4em}. Exit | | |<^. R0 |<^. Preserved | |<^. R1 |<^. Preserved | h4. Use This service is issued to inform that the USB system is shutting down. h4. Notes You must not claim this service call. h4. See also * [[Service Calls]] * [[Service_USB]]