h6. [[Programmer's Reference Manuals]] h6(. » [[Service Calls]] h6((. » Service_USB h2. Service_USB h5. (Service &D2) |_<^{width:4em}. Entry | | |<^. R0 |<^. "Reason code":#reason| |<^. R1 |<^. 210 (&D2)| h4(#reason). Reason Codes |_<^{width:4em}. #|_<^{width:4em}. Hex #|_<^. Action| |<^. 0|<^. &00|<^. [[Service_USB 0|Attach]]| |<^. 1|<^. &01|<^. [[Service_USB 1|Connected]]| |<^. 2|<^. &02|<^. Reserved| |<^. 3|<^. &03|<^. [[Service_USB 3|Starting]]| |<^. 4|<^. &04|<^. [[Service_USB 4|Dying]]| h4. Use This service provides a variety of USB related notifications. h4. Notes The reason code passed by R0 on entry determines the operation of the service call. h4. See also * [[Service Calls]] [linkcode2]Service_USBDriver+2