Post Codes And Countdown Codes - Intel SRPL8 Product Manual

POST Codes and Countdown Codes

BIOS indicates the current testing phase during POST after the video adapter has been successfully
initialized by outputting a 2-digit hex code to I/O location 80h. To view POST codes, you must
install an optional PCI POST add-in board. For more information, contact your customer-service
representative.
Table 16. Port-80 Codes
POST Code Beeps
02
03
04
06
08
09
0A
0B
0C
0E
0F
10
11
12
13
14
16 1-2-2-3
17
18
1A
1C
20 1-3-1-1
22 1-3-1-3
24
28 1-3-3-1
29 1-3-3-2
2A
2C 1-3-4-1
2E 1-3-4-3
2F
30 1-4-1-1
32
33
34 1-4-2-1
SRPL8 Server System Product Guide
Error
Verify Real Mode
Disable NMI
Get Processor type
Initialize system hardware
Initialize chip set registers with initial POST values
Set in POST flag
Initialize processor registers
Enable processor cache
Initialize caches to initial POST values
Initialize I/O
Initialize the local bus IDE
Initialize Power Management
Load alternate registers with initial POST values new
Restore processor control word during warm boot
Reset PCI bus masters
Initialize keyboard controller
BIOS ROM checksum
Prepare to size RAM
8254 timer initialization
8237 DMA controller initialization
Reset Programmable Interrupt Controller
Test DRAM refresh
Test 8742 Keyboard Controller
Set ES segment register to 4 GB
Autosize DRAM
Initialize or call POST Memory Manager
Clear 512 KB base RAM
RAM failure on address line xxxx
RAM failure on data bits xxxx of low byte of memory bus
Prepare to shadow system BIOS
RAM failure on data bits xxxx of high byte of memory bus
Test processor bus-clock frequency
Initialize the POST Dispatch Manager
Test CMOS
continued
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