Appendix B: BIOS POST Checkpoint Codes

B-3 Uncompressed Initialization Codes

The following runtime checkpoint codes are listed in order of execution. These codes are uncompressed in F0000h shadow RAM.

Checkpoint

03h

05h

06h

07h

08h

0Ah

0Bh

0Ch

0Eh

0Fh

10h

11h

12h

13h

14h

19h

1Ah

2Bh

2Ch

2Dh

23h

24h

Code Description

The NMI is disabled. Next, checking for a soft reset or a power on condition.

The BIOS stack has been built. Next, disabling cache memory.

Uncompressing the POST code next.

Next, initializing the CPU and the CPU data area.

The CMOS checksum calculation is done next.

The CMOS checksum calculation is done. Initializing the CMOS status register for date and time next.

The CMOS status register is initialized. Next, performing any required initialization before the keyboard BAT command is issued.

The keyboard controller input buffer is free. Next, issuing the BAT command to the keyboard controller.

The keyboard controller BAT command result has been verified. Next, performing any necessary initialization after the keyboard controller BAT command test.

The initialization after the keyboard controller BAT command test is done. The key- board command byte is written next.

The keyboard controller command byte is written. Next, issuing the Pin 23 and 24 blocking and unblocking command.

Next, checking if <End or <Ins> keys were pressed during power on. Initializing CMOS RAM if the Initialize CMOS RAM in every boot AMIBIOS POST option was set in AMIBCP or the <End> key was pressed.

Next, disabling DMA controllers 1 and 2 and interrupt controllers 1 and 2.

The video display has been disabled. Port B has been initialized. Next, initializing the chipset.

The 8254 timer test will begin next.

Next, programming the flash ROM.

The memory refresh line is toggling. Checking the 15 second on/off time next.

Passing control to the video ROM to perform any required configuration before the video ROM test.

All necessary processing before passing control to the video ROM is done. Look- ing for the video ROM next and passing control to it.

The video ROM has returned control to BIOS POST. Performing any required pro- cessing after the video ROM had control

Reading the 8042 input port and disabling the MEGAKEY Green PC feature next. Making the BIOS code segment writable and performing any necessary configura- tion before initializing the interrupt vectors.

The configuration required before interrupt vector initialization has completed. In- terrupt vector initialization is about to begin.

B-3

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SUPER MICRO Computer H8QM3-2 user manual Uncompressed Initialization Codes
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H8QM3-2 specifications

The Super Micro Computer H8QM3-2 is a cutting-edge server motherboard designed to meet the demanding needs of high-performance computing applications. Built upon the AMD Opteron architecture, it is tailored for enterprises seeking robust server capabilities with exceptional performance, reliability, and scalability.

One of the standout features of the H8QM3-2 is its support for dual AMD Opteron 6100 series processors. This allows for an impressive processing power that can handle resource-intensive tasks and demanding workloads. With a maximum supported RAM of 512GB via 16 DIMM slots, this motherboard can efficiently manage large datasets and applications that require substantial memory.

The H8QM3-2 also boasts a versatile I/O capabilities. It includes multiple PCI-E 2.0 slots to accommodate a variety of expansion cards, ensuring that businesses can customize their servers to meet specific requirements. The motherboard features up to six SATA III ports for enhanced data transfer speeds and reliable connectivity. These ports support both RAID 0 and RAID 1 configurations, which provide options for data redundancy and enhanced performance.

In terms of network connectivity, the H8QM3-2 integrates dual 1GbE ports, allowing for efficient data transmission and reliable networking. This integration is vital for servers that rely on continuous uptime and need to manage extensive network traffic.

Another significant advantage of the H8QM3-2 is its energy efficiency. Supermicro's commitment to green computing is evident in this motherboard's design, which balances performance and power consumption. Organizations can benefit from reduced operational costs while still enjoying high-performance capabilities.

The H8QM3-2 is also designed with advanced thermal management technology. It features dedicated cooling zones and support for multiple fans to ensure that components remain at optimal temperatures, thus prolonging their lifespan and maintaining performance standards.

Security features are paramount in server technology, and the H8QM3-2 does not disappoint. Its support for hardware-based security features helps protect sensitive data and integrity against various threats.

In summary, the Super Micro Computer H8QM3-2 motherboard stands out in the realm of server solutions. With its support for dual AMD Opteron processors, extensive memory capacity, versatile I/O options, energy efficiency, and advanced thermal management, it is an excellent choice for businesses looking to upgrade their server infrastructure while maximizing performance and reliability.
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