SPARC64 auxiliary I/O
auxio* at ebus?
auxio* at sbus?
auxio device contains miscellaneous
system controls, including the front panel LED. This LED can be made to
blink based on the load average on most systems by setting the
variable machdep.led_blink to a non-zero value.
Internally, various status bits for some of the onboard devices are found in
sysctl(2), ebus(4), intro(4), sbus(4)