.........................Contents


1. OpenBoot 3.x Commands 1
..Environmental Monitoring 1
.....`disable-environmental-monitor 1`
.....`enable-environmental-monitor 2`
..Messages Indicating Environmental Conditions 2
..Externally Initiated Reset XIR 3</>
..· To Initiate an XIR: 3</>
..· To Display This XIR Information: 3
..Flash PROM Management 4
.....`flash-update-system 4`
.....`prom-copy 5`
.....`update-proms 5`
..System Configuration and Diagnostic Information 6
..TOD Clock Management 6
.....`copy-clock-tod-to-io-boards 6`
.....`copy-io-board-tod-to-clock-tod 7`
..Specific NVRAM Variables 7
.....`configuration-policy 8`
.....`disabled-board-list 8`


.....`disabled-memory-list 9`
.....memory-interleave 9
.....`sbus-probe-default 10`
.....`sbus-specific-probe 11`
2. Board Hot-Plug Software Procedures 13
..Disabled System Board 13
..· To Swap Out a Disabled Board 14
..Activated System Board 14
..· To Swap Out an Activated Board 14
..Disabling Hardware 15
..· To Disable a Defective Board 15
..Getting More Information 16
3. CPU Over Temperature Safeguard 17
..COS Requirements 17
..Overheating Factors 18
..COS Operation 18
.....Resolving an Over Temperature Condition 18
..· To Resolve an Over Temperature Condition 19
.....Failure to Offline CPUs 19
.....Failure to Power Down CPUs 20
4. Enabling a Hardware Timer 21
..Hardware Watchdog 21
..History Log Option of prtdiag(1M) 21
..Resetting and Power Cycling the System From a Remote Console 22