Intel P4000RP Technical Product Specification - Page 92
System ID Button and LED Support, System Reset Button Support, NMI Button Support
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On-board Connector/Header Overview Intel® Server Board S1200V3RP State Power-off Power-on S5 Power Mode Non-ACPI Non-ACPI ACPI LED Off On Off S4 ACPI Off S3-S1 ACPI Slow blink S0 ACPI Steady on Description System power is off, and the BIOS has not initialized the chipset. System power is on Mechanical is off, and the operating system has not saved any context to the hard disk. Mechanical is off. The operating system has saved context to the hard disk. DC power is still on. The operating system has saved context and gone into a level of low-power state. System and the operating system are up and running. 8.4.2 System ID Button and LED Support Pressing the System ID Button will toggle both the ID LED on the front panel and the Blue ID LED on the server board on and off. The System ID LED is used to identify the system for maintenance when installed in a rack of similar server systems. The System ID LED can also be toggled on and off remotely using the IPMI Chassis Identify command which will cause the LED to blink for 15 seconds. 8.4.3 System Reset Button Support When pressed, this button will reboot and re-initialize the system. 8.4.4 NMI Button Support When the NMI button is pressed, it puts the server in a halt state and causes the BMC to issue a non-maskable interrupt (NMI). This can be useful when performing diagnostics for a given issue where a memory download is necessary to help determine the cause of the problem. Once an NMI has been generated by the BMC, the BMC does not generate another NMI until the system has been reset or powered down. The following actions cause the BMC to generate an NMI pulse: Receiving a Chassis Control command to pulse the diagnostic interrupt. This command does not cause an event to be logged in the SEL. Watchdog timer pre-timeout expiration with NMI/diagnostic interrupt pre-timeout action enabled. The following table describes behavior regarding NMI signal generation and event logging by the BMC. Table 41. NMI Signal Generation and Event Logging Causal Event Chassis Control command (pulse diagnostic interrupt) Front panel diagnostic interrupt button pressed Watchdog Timer pre-timeout expiration with NMI/diagnostic interrupt action Signal Generation X NMI Front Panel Diag Interrupt Sensor Event Logging Support - X X X X 80 Revision 1.0