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Phoenix UMC Chipset PCI

Code

Meaning

02

Verify Real Mode

04

Get CPU type

06

Initialise system hardware

08

Initialise chipset registers with initial POST values

09

Set in POST flag

0A

Initialise CPU registers

0C

Initialise cache to initial POST values

0E

Initialise I/O

10

Initialise power management

11

load alternate registers with initial POST values

12

Jump to User Patch 0

14

Initialise keyboard controller

16

BIOS ROM checksum

18

8254 timer initialisation

1A

8237 DMA controller initialisation

1C

Reset PIC

20

Test DRAM refresh

22

Test 8742 keyboard controller

24

Set ES segment register to 4 Gb

26

Enable Address Line A20

28

Autosize DRAM

2A

Clear 512K base RAM

2C

Test 512K base address lines

2E

Test 512K base memory

30

Test base address memory

32

Test CPU bus clock frequency

34

Test CMOS RAM

35

Test chipset register initialise

36

Test check resume

37

Reinitialise the chipset

38

Shadow System BIOS ROM

39

Reinitialise the cache

3A

Autosize the cache

3C

Configure advanced chipset registers

3D

Load alternate registers with CMOS values

3E

Read hardware configuration from keyboard controller

40

Set initial CPU speed

42

Initialise interrupt vectors

44

Initialise BIOS interrupts

46

Check ROM copyright notice

47

Initialise manager for PCI option ROMs

48

Check video configuration against CMOS

49

Initialise PCI bus and devices

4A

Initialise all video adapters

4C

Shadow video BIOS ROM

4E

Display copyright notice

50

Display CPU type and speed

52

Test keyboard

54

Set key click if enabled

56

Enable keyboard

58

Test for unexpected interrupts

5A

Display prompt "Press F2 to Enter Setup"

5C

Test RAM between 512 and 640K

5E

Test base memory

60

Test expanded memory

62

Test extended memory address lines

64

Jump to User Patch 1

66

Configure advanced cache registers

68

Enable external and CPU caches

69

Set up power management

6A

Display external cache size

6C

Display shadow message

6E

Display non-disposable segments

70

Display error messages

72

Check for configuration errors

74

Test RTC

76

Check for keyboard errors

7A

Enable keylock

7C

Set up hardware interrupt vectors

7E

Test coprocessor if present

80

Disable onboard I/O ports

82

Detect and install external RS232 ports

84

Detect and install external parallel ports

86

Reinitialise onboard I/O ports

88

Initialise BIOS data area

8A

Initialise extended BIOS data area

8C

Initialise floppy controller

8E

Hard disk autotype configuration

90

Initialise hard disk controller

91

Initialise local bus hard disk controller

92

Jump to User Patch 2

94

Disable A20 address line

96

Clear huge ES segment register

98

Search for option ROMs

9A

Shadow option ROMs

9C

Set up Power Management

9E

Enable hardware interrupts

A0

Set time of day

A2

Check key lock

A4

Initialise typematic rate

A8

Erase F2 prompt

AA

Scan for F2 key stroke

AC

Enter Setup

AE

Clear in-POST flag

B0

Check for errors

B2

POST done

B4

One beep

B6

Check password (optional)

B8

Clear global descriptor table

BC

Clear parity checkers

BE

Clear screen (optional)

BF

Check virus and backup reminders

C0

Try to boot with INT 19

D0

Interrupt handler error

D2

Unknown interrupt error

D4

Pending interrupt error

D6

Initialise option ROM error

D8

Shutdown error

DA

Extended Block Move

DC

Shutdown 10 error

These are for boot block in Flash ROM:

Code

Meaning

Flash BIOS Integrity Test

E2

Initialise the chipset

E3

Check for Forced Flash

E5

Check HW status of ROM

E6

BIOS ROM is OK

E7

Do a complete RAM test

Flash Recovery

E8

Do OEM initialisation

E9

Initialise interrupt controller

EA

Read in the bootstrap code

EB

Initialise all vectors

EC

Boot the flash program

ED

Initialise the boot device

EE

Boot code was read OK.

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