/sys$common/syshlp/USB$SDA_HELP.HLB  —  SHOW  DEVICE  Examples  Trace
 SDA> USB SHO DEV trace 89750e50
 Device  address is:             89750e50
 Device tracing messages:
                   0:  4-SEP-2008 17:50:10.38 - hub_device_sc
                   1:  4-SEP-2008 17:50:10.48 - hub_device_sc
                   2:  4-SEP-2008 17:50:10.48 - PORT_CONNECTION is set
                   3:  4-SEP-2008 17:50:10.48 - set device_state = USBD_DEVICE_POWERED
                   4:  4-SEP-2008 17:50:10.48 - open default address
                   5:  4-SEP-2008 17:50:10.48 - usbd_open_default_pipe
                   6:  4-SEP-2008 17:50:10.48 - set next_device_state = USBD_DEVICE_DEFAULT
                   7:  4-SEP-2008 17:50:10.48 - Ack the change
                   8:  4-SEP-2008 17:50:10.48 - change needed
                   9:  4-SEP-2008 17:50:10.48 - next_device_state == USBD_DEVICE_DEFAULT
                  10:  4-SEP-2008 17:50:10.48 - hub_device_sc
                  11:  4-SEP-2008 17:50:10.48 - No change needed
                  12:  4-SEP-2008 17:50:10.48 - next_device_state == USBD_DEVICE_DEFAULT
                  13:  4-SEP-2008 17:50:10.48 - No ack change
                  14:  4-SEP-2008 17:50:10.64 - hub_device_sc
                  15:  4-SEP-2008 17:50:10.64 - PORT_RESET is clear
                  16:  4-SEP-2008 17:50:10.64 - set device_state to USBD_DEVICE_DEFAULT
                  17:  4-SEP-2008 17:50:10.64 - set next_device_state to USBD_DEVICE_ADDRESSED
                  18:  4-SEP-2008 17:50:10.64 - Ack the change
                  19:  4-SEP-2008 17:50:10.64 - hub_device_sc
                  20:  4-SEP-2008 17:50:10.64 - No change needed
                  21:  4-SEP-2008 17:50:10.64 - next_device_state == USBD_DEVICE_ADDRESSED
                  22:  4-SEP-2008 17:50:10.64 - change needed
                  23:  4-SEP-2008 17:50:10.64 - next_device_state ==USBD_DEVICE_ADDRESSED
                  24:  4-SEP-2008 17:50:10.64 - No ack change
                  25:  4-SEP-2008 17:50:10.65 - hub_read_device_desc1
                  26:  4-SEP-2008 17:50:10.65 - usbd_setup_control_request
                  27:  4-SEP-2008 17:50:10.65 - hub_set_address
                  28:  4-SEP-2008 17:50:10.65 - usbd_setup_control_request
                  29:  4-SEP-2008 17:50:10.65 - usbd_close_default_pipe
                  30:  4-SEP-2008 17:50:10.65 - usbd_open_default_pipe
                  31:  4-SEP-2008 17:50:10.65 - hub_read_device_desc2
                  32:  4-SEP-2008 17:50:10.65 - usbd_setup_control_request
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