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

02

03

04

06

08

09

0A

0B

0C

0E

0F

10

11

12

13

14

16

17

18

1A

1C

20

22

24

28

29

2A

2C

2E

2F

30

32

33

34

Beeps

1-2-2-3

1-3-1-1

1-3-1-3

1-3-3-1

1-3-3-2

1-3-4-1

1-3-4-3

1-4-1-1

1-4-2-1

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

SRPL8 Server System Product Guide

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Intel SRPL8 manual Post Codes and Countdown Codes, Port-80 Codes, Post Code Beeps, Error