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Service Hints & Tips

Document ID: DDSE-3U6MXA

PC Server 520 - Checkpoint codes

Applicable to: World-Wide

Checkpoint Codes
During POST, the computer displays the status of the components being tested in the form of Checkpoint (CP) codes in the lower left-hand corner of the screen. The following is a list of the CP codes followed by the routine in process and the boot mode.


CP
Code

Routine

Boot Mode

01

Its_A_Reset

Cold+Warm+ Restore+Mfg+ SAD

0D

Init Chip_NS

Cold+Warm+ Restore+Mfg+ SAD

12

Periph Init

Cold+Warm+ Restore+Mfg+ SAD

03

Disable Video

Cold+Warm+ Restore+Mfg+ SAD

05

Phase 1 Enter
Big Real

Cold+Warm+ Restore+Mfg+ SAD

B0

Enable Local APIC

Cold+Warm+ Restore+Mfg+ SAD

06

Cache Init

Cold+Warm+ Restore+Mfg+ SAD

07

Init Refresh

Cold+Restore+ Mfg

08

Wait For RTC

Cold+Restore+ Mfg

0A

Std CMOS
Checksum NS

Cold+Warm+ Restore+Mfg

0B

Mid CMOS Checksum NS

Cold+Warm+ Restore+Mfg

0C

Ext CMOS
Checksum NS

Cold+Warm+ Restore+Mfg

0EC

SET_INIT

Cold+Warm+ Restore+Mfg+ SAD

10

Check Parity
NonParity

Cold+Warm+ Restore+Mfg

11

Disable Parity

Cold+Warm+ Restore+Mfg+ SAD

B1

Init Seattle

Cold+Restore+ Mfg+SAD

13

Test CPU Regs

Cold+Restore+ Mfg

14

Init RTC

Cold+Warm+ Restore+Mfg+ SAD

16

Init Timer 0

Cold+Warm+ Restore+Mfg+ SAD

17

Init Timer 2

Cold+Warm+ Restore+Mfg+ SAD

18

Test DMA

Cold+Warm+ Restore+Mfg+ SAD

19

Test Page Regs

Cold+Warm+ Restore+Mfg+ SAD

1A

Verify Refresh

Cold+Restore+ Mfg

1B

Enable Parity

Cold+Warm+ Restore+Mfg+ SAD

1C

Save ID Warm

SAD

1D

Test First 64k

Cold+Restore+ Mfg

1E

Clear First 64k

Cold+Warm+ Restore+Mfg

1F

POST with Stack

Cold+Warm+ Restore+Mfg+ SAD

20

Enable BIOSE000

SAD

21

BIOS Shadow

Cold+Warm+ Restore+Mfg

B2

Shadow SCSI

Cold+Warm+ Restore+Mfg

23

Phase 2 POST

Cold+Warm+ Restore+Mfg+ SAD

24

Enable BIOS
F000

SAD

24

Shadow VP D

Cold+Warm+ Restore+Mfg

25

Init Key Board Data

Cold+Warm+ Restore+Mfg+ SAD

26

Save ID

Cold+Warm+ Restore+Mfg+ SAD

B3

Check P54C

Cold+Mfg

27

Init Q Boot

Cold+Warm+Restore+Mfg

28

Periph Config

Cold+Warm+Restore+Mfg+SAD

2A

Init Timeout
Tables

Cold+Warm+ Restore+Mfg+ SAD

2B

Pos_Setup

Cold+Warm+ Restore+Mfg

2F

Test DMA Locations

Cold+Warm+ Restore+Mfg+ SAD

B4

Init DMA Regs

Cold+Warm+Restore+Mfg+SAD

30

Test PICs

Cold+Warm+
Restore+Mfg+
SAD

31

Init Vector Table

Cold+Warm+Restore+Mfg+SAD

32

Enable Timer Int

Cold+Warm+ Restore+Mfg+ SAD

33

Init Keyboard

Cold+Warm+ Restore+Mfg+ SAD

34

Clear Memory Size Error

Cold+Restore+ mfg

35

Check
Configuration

Cold+Warm+
Restore+Mfg

36

Mfg Boot Fork

Cold+Restore+
Mfg

37

PCI Reset

Cold+Warm+ Restore+Mfg

B5

NVRAM check

Cold+Warm+ Restore+Mfg

38

PCI Video

Cold+Warm+ Restore+Mfg

3B

Sign On

Cold+Warm+ Restore+Mfg

3C

Test Timer Tick

Cold+Restore+ Mfg

3F

Enable Video

SAD

40

CSET BFR SIZMEM

Cold+Warm+ Restore+Mfg+ SAD

41

Size Memory
Above 64k

Cold+Warm+ Restore+Mfg

42

CSET AFT SIZ MEM

Cold+Warm+ Restore+Mfg

43

Test Timer 2

Cold+Warm+ Restore+Mfg

44

Password Not
Entered

Cold+Restore

45

Test PS/2 Mouse

Cold+Warm+ Restore+Mfg

46

Check For Mouse Buttons

Cold+Restore

47

Init Key Board
Flags

Cold+Warm+ Restore+Mfg+ SAD

48

Test Key Board

Cold+Warm+ Restore

4B

Memory Test
Prompt

Cold+Warm+Mfg

4C

Test Memory

Cold+Restore+ Mfg

4D

Clear EBDA

Warm

4E

CSET AFT M
TEST

Cold+Warm+ Restore+Mfg

4F

Allocate EBDA

Cold+Warm+ Restore+Mfg

B6

Set Planar Info

Cold+Restore+

50

xfer ebda vars

Cold+Warm+ Restore+Mfg

B7

Init P54M

Cold+Warm+ Restore+Mfg

B8

Init MP Structures

Cold+Warm+ Restore+Mfg

B9

CPU Speed

Cold+Warm+Restore+Mfg+SAD

51

Set Warm Boot
Flag

Warm

52

Clear Speed Bits

Cold+Warm+Mfg+SAD

53E

FLOB

Cold+Warm+ Restore+Mfg+ SAD

54

Enable System Interrupts

Cold+Warm+Restore+Mfg+SAD

55

C2 Security
Check

Restore

56

Init Key Board

Cold+Warm+ Restore+SAD

57

Test RTC

Cold+Warm+ Restore+SAD

58

Check For NPX

Cold+Warm+ Restore+Mfg+ SAD

59

reset hdctl

Cold+Warm+ Restore+Mfg+ SAD

5A

FD INIT

Cold+Warm+ Restore+Mfg+ SAD

5B

Set Floppy Config

Cold+Warm+ Restore+Mfg+ SAD

BA

Unlock Early

Cold+Restore

5C

Init A20

Cold+Warm+ Restore+Mfg+ SAD

5D

Cache Config

Cold+Warm+ Restore+Mfg+ SAD

5E

HD SETUP

Cold+Warm+ Restore+Mfg+ SAD

62

Verify CMOS
Config

Cold+Warm+ Restore+Mfg

70

Check For Setup Hot Key

Cold+Warm

63

Clear Screen

Cold+Warm+ Restore+SAD

BB

Init IRQ Levels

Cold+Restore

65

IBM Cirrus
DDC

Cold

BC

PACP Arbitration

Cold+Warm+ Restore+Mfg+ SAD

BD

Enable Planar
SCSI

Cold+Warm+ Restore+Mfg+ SAD

66

CSET BFR
OPROM

Cold+Warm+ Restore+Mfg

BE

Do ROM Scan

Cold+Warm+ Restore

2C

TCPC

Cold+Warm+ Restore+Mfg

49

TCPC Errors

Cold+Warm+ Restore

2D

Find Serial Ports

Cold+Warm+ Restore+Mfg

2E

Find Parallel
Ports

Cold+Warm+ Restore+Mfg

68

CSET AFT
OPROM

Cold+Warm+ Restore+Mfg

BF

Get MC Data

Cold+Warm+ Restore

69

PCI Configure

Cold+Warm+
Restore+Mfg

6A

MFG Hook 65

MFG

6B

Init Time Of
Day

Cold+Warm+ Restore+Mfg+ SAD

6C

Check For Locked Key Board

Cold+Warm+ Restore+SAD

6D

Init Enable NMI

Cold+Warm+ Restore+Mfg+ SAD

6E

Set Boot Speed

Cold+Warm+ Restore+Mfg

6F

Set Key Board
LEDs

Cold+Warm+SAD

71

Init Flush Key Board

Cold+Warm+ Restore+SAD

72

Move Error Log
To EBDA

Cold+Warm+ Restore+Mfg

73

Init Disable Mouse

Cold+Warm+ Restore+Mfg+ SAD

74

Sys Reset

MFG

75

Phase 2 Exit Big Real

Cold+Warm+ Restore+Mfg+ SAD

76

BOOT STRAP 1

Cold+Warm+MFG+SAD

78

SAD BOOT PROC

SAD

79

Start Boot
Sequence

N/A

7A

Read Boot Sector

N.A

7B

Boot Sector Read Complete

N.A

7C

Check for CE
Boot Override

N.A

7F

Xfer to boot
code

N.A



The following codes also produce a series of beeps. The series of beeps are listed for each code followed by an explanation of the code.

CP Code

Beeps

Definition

82

1-1-3

CMOS write /read failure

83

1-1-4

BIOS ROM checksum failure

84

1-2-1

Programmable Interval Timer test failure

85

1-2-2

DMA initialization failure

86

1-2-3

DMA page register write/read test failure

87

1-2-4

RAM refresh verification failure

88

1-3-1

1st 64K RAM test failure

89

1-3-2

1st 64K RAM parity test failure

90

2-1-1

Slave DMA register test in-progress or failure

91

2-1-2

Master DMA register test in-progress or failure

92

2-1-3

Master interrupt mask register test failure

93

2-1-4

Slave interrupt mask register test failure

95

2-2-2

Key-board controller test failure

99

2-3-2

Screen memory test in-progress or failure

9A

2-3-3

Screen retrace tests in-progress or failure

9B

N/A

Search for video ROM in-progress

9C

N/A

Screen believed operable - mode in low two bits

9D

N/A

Screen believed operable - mode in low two bits

9E

N/A

Screen believed operable - mode in low two bits

9F

N/A

Screen believed operable - mode in low two bits

A0

3-1-1

Timer tick interrupt test failure

A1

3-1-2

Interval timer channel 2 test failure

A3

3-1-4

Time-Of-Day clock test failure

A7

3-2-4

Comparing CMOS memory size against actual

A8

3-3-1

Memory size mismatch occurred

D0

N/A

Cache State

D1

N/A

Cache Init

D2

N/A

Cache Restore

D3

N/A

Cache Config

D4

N/A

Cache Flush

D5

N/A

Cache Enable

D6

N/A

Cache Disable

D7

N/A

Cache Custom

e1h

N/A

CSET BFR VIDROM

e5h

N/A

CSET AFT CMCFG

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Diagnostics, Hardware Maintenance Information

Date Created

16-08-96

Last Updated

13-11-98

Revision Date

05-11-99

Brand

IBM PC Server

Product Family

PC Server 520

Machine Type

8641

Model

TypeModel

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