Uncompressed Initialization Codes | SUPER MICRO Computer H8SCM

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

25h

27h

28h

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 keyboard 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. Looking for the video ROM next and passing control to it.

The video ROM has returned control to BIOS POST. Performing any required processing 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 conﬁguration before initializing the interrupt vectors.

The conﬁguration required before interrupt vector initialization has completed. Interrupt vector initialization is about to begin.

Interrupt vector initialization is done. Clearing the password if the POST DIAG switch is on.

Any initialization before setting video mode will be done next.

Initialization before setting the video mode is complete. Conﬁguring the monochrome mode and color mode settings next.

B-3

H8SCM, H8SCM-F specifications

Super Micro Computer, known for its cutting-edge server technology and enterprise solutions, offers the H8SCM-F and H8SCM motherboards as part of its robust line of products designed for high-performance computing tasks. These motherboards are ideal for businesses that require reliable, scalable, and cost-effective solutions for their data center and server needs.

The H8SCM-F and H8SCM motherboards are based on the AMD Opteron architecture, which delivers an impressive performance-to-cost ratio. They support dual-socket configurations, accommodating up to 16 cores in a single system, which is ideal for handling intensive processing demands. This allows organizations to run virtualization software, database applications, and other resource-heavy tasks with ease.

One of the standout features of the H8SCM-F motherboard is its extensive memory support. It can accommodate up to 512GB of DDR3 memory across eight DIMM slots. This high memory capacity enhances performance, particularly in data-intensive applications, ensuring that users can run multiple processes without facing bottlenecks.

The H8SCM series motherboards also emphasize connectivity. With integrated features such as dual Gigabit Ethernet ports, they support effective bandwidth management. Additionally, the presence of multiple PCI-E slots enables users to incorporate various expansion cards for enhanced connectivity options, including additional network interfaces and high-performance storage controllers.

In terms of storage, the H8SCM-F motherboard offers support for multiple SATA drives, facilitating RAID configurations for improved data redundancy and performance. The ability to implement RAID 0, 1, 5, and 10 provides users with flexibility and security for their data storage needs.

Another key technology integrated into the H8SCM series is advanced thermal management. Supermicro has designed these motherboards with careful attention to airflow and cooling solutions, ensuring that systems remain stable under heavy workloads. This is particularly vital in environments where uptime is critical.

In summary, the Super Micro Computer H8SCM-F and H8SCM motherboards are designed with high-performance, scalability, and reliability in mind. Their support for powerful AMD Opteron processors, substantial memory capacity, extensive connectivity options, and advanced storage and thermal management features make them an excellent choice for businesses seeking efficient server solutions. Whether for virtualized environments or high-demand applications, these motherboards deliver exceptional performance and versatility to meet a wide range of enterprise needs.