Intel® SHG2 DP Server Board Technical Product Specification
Error Reporting and Handling
Revision 1.0
Intel Order Number C11343-001
41
code of 1-3-1-1 is generated. The dash between the numbers defines an audible pause that
delimits the sequence.
POST codes will occur prior to the video display being initialized. To assist in determining the
fault, a unique beep-code is derived from these checkpoints as follows:
1. The 8-bit test point is broken down to four 2-bit groups.
2. Each group is made one-based (1 through 4).
3. One to four beeps are generated based on each group’s 2-bit pattern.
Example:
Checkpoint 04Bh is broken down to:
01 00 10 11
And the beep code is:
2 – 1 – 3 –4
Table 30. Standard BIOS POST Codes
CP
Beeps
Reason
02
Verify Real Mode
04
Get Processor type
06
Initialize system hardware
08
Initialize chipset registers with initial POST values
09
Set in POST flag
0A
Initialize Processor registers
0B
Enable Processor cache
0C
Initialize caches to initial POST values
0E
Initialize
I/O
0F
Initialize the local bus IDE
10
Initialize Power Management
11
Load alternate registers with initial POST values
12
Restore Processor control word during warm boot
14
Initialize keyboard controller
16
1-2-2-3
BIOS ROM checksum
18
8254 timer initialization
1A
8237 DMA controller initialization
1C
Reset Programmable Interrupt Controller
20
1-3-1-1
Test DRAM refresh
22
1-3-1-3
Test 8742 Keyboard Controller
24
Set ES segment register to 4GB
28
1-3-3-1
Auto-size DRAM, system BIOS stops execution if it does not detect any usable memory
2A
Clear 8 MB base RAM
2C
1-3-4-1
Base RAM failure, BIOS stops execution here if entire memory is bad
32
Test Processor bus-clock frequency