BIOS Text Error. Настройки Phoenix BIOS

Расшифровка кодов Phoenix BIOS материнских плат компьютеров, ноутбуков

Расшифровка кодов Phoenix BIOS материнских плат компьютеров, ноутбуков

Оглавление:
Phoenix BIOS Text Error Messages
Phoenix BIOS Post Procedures
Phoenix XT 2.52 PnP BIOS Post Codes
Phoenix BIOS Plus or v1.0 BIOS Post Codes
Phoenix UMC chipset PCI BIOS Post Codes
Phoenix PCI BIOS Post Codes
Phoenix ISA/EISA/MCA v3.07 BIOS Post Codes
Phoenix 4.0 BIOS Post Codes
Phoenix 4.0 Release 6.0 BIOS Post Codes

Phoenix BIOS Text Error Messages:

Diskette drive A error Drive A: is present
but fails the POST diskette tests.  Check that the drive
is defined with the proper diskette type in Setup and that the
disk is installed correctly
Extended RAM failed
at offset: nnn
Extended memory not
working or not configured properly at offset: nnn
Failing Bits: nnnn The hexadecimal number
nnnn is a map of the bits at the RAM address that failed the memory
test.  Each 1 in the map indicates a failed bit
Fixed Disk 0 Failure Fixed disk is not working
or not configured properly.  Check to see if fixed disk is
installed properly.  Run Setup to be sure the fixed disk
type is correctly identified
Fixed Disk 1 Failure Fixed disk is not working
or not configured properly.  Check to see if fixed disk is
installed properly.  Run Setup to be sure the fixed disk
type is correctly identified
Fixed Disk Controller
Failure
Fixed disk is not working
or not configured properly.  Check to see if fixed disk is
installed properly.  Run Setup to be sure the fixed disk
type is correctly identified
Incorrect Drive A:
type – run Setup
Type of diskette for
drive A: not correctly identified in Setup
Invalid NVRAM media
type
Problem with NVRAM
(CMOS) access
Keyboard controller
error
The keyboard controller
failed test.   Try replacing the keyboard
Keyboard error Keyboard not working
Keyboard error nn BIOS discovered a stuck
key and displays the scan code nn for the stuck key
Keyboard locked – Unlock
key switch
Unlock the system to
proceed
Monitor type does not
match CMOS – Run Setup
Monitor type not correctly
identified in Setup
Operating system not
found
Operating system cannot
be located on either A: or C:.  Enter Setup and see if fixed
disk and drive A: are properly identified
Parity Check 1 Parity error found
in the system bus.   BIOS attempts to locate the address
and display it on screen.  If it cannot locate the address,
it displays ???
Parity Check 2 Parity error found
in the I/O bus.   BIOS attempts to locate the address and
display it on screen.  If it cannot locate the address, it
displays ???
Press <F1> to
resume, <F2> to Setup
Displayed after any
recoverable error message.  Press F1 to start the boot process
or F2 to enter Setup and change any settings
Real-time clock error Real-time clock fails
BIOS test.   Might require motherboard repair
Shadow RAM failed at
offset: nnnn
Shadow RAM failed at
offset nnnn of the 64KB block at which the error was detected
System battery is dead

– Replace and run Setup

The CMOS clock battery
indicator shows the battery is dead.  Replace the battery
and run Setup to reconfigure the system
System cache error
– Cache disabled
RAM cache failed the
BIOS test.   BIOS disabled the cache
System CMOS checksum
bad – run Setup
System CMOS RAM has
been corrupted or modified incorrectly.  Perhaps by an application
program that changes data stored in CMOS.  Run Setup and
reconfigure the system either by getting the default values or
making your own selections
System RAM failed at
offset: nnnn
System RAM failed at
offset nnnn of the 64KB block at which the error was detected
System timer error The timer test failed.
Requires repair of system motherboard

Phoenix BIOS Post Procedures:

CPU Check internal operations
i.e. ALE/IRQ status, Request, LA and memory read/write
CMOS RAM Test with walking bit
pattern
ROM BIOS Perform checksum on
ROM BIOS where all bits are added and compared to a factory set
total
PIT Check to ensure interrupt
requests are properly executed
DMA Check DMA from CPU
to memory without BIOS.  Also check page registers
Base 64K Check first 4K block
Serial and Parallel
Ports
I/O data areas for
any devices found are assigned but are not tested
PIC Check that proper interrupt
request levels are addressed
Keyboard Controller Check 8240 for proper
operation, including scan code response and Gate A20 which allows
CPU operation in protected mode
CMOS Check data within CMOS
and compare to BIOS information.  Failure of the extended
area is often due to wrong data setup.   Constant failure
after resetting CMOS is either battery CMOS chip or RTC
Video Controller Test and initialize
controller and ROM on the video adapter
RTC Check to ensure proper
frequencies are on proper lines for the Video Color CPU and DMA
frequency.  Check RTC and PIT or the system crystal if a
failure occurs
CPU Return from protected
mode.  CPU is put into protected mode and returns to the
POST at the point indicated by the CMOS ROM data area byte 0F.
Failure here is normally due to the CPU, keyboard controller,
CMOS chip or an address line
PIC Test counter 2
NMI Check for non maskable
interrupt request vector for active status.  Failure is normally
due to the CMOS but could also be the BIOS IRQ or CPU chips
Keyboard Check for NumLock and/or
Caps and Shift keys
Mouse Initialize through
the keyboard controller.  This is only done if a mouse ispresent and it is initialized in this way
RAM Above 64K Test in 64KB blocks
with a walking bit pattern and parity enabled
Fixed and Floppy Controllers Test for proper response
to BIOS calls
Shadow RAM Areas Look in CMOS for settings
on which adapter or system ROM’s are to be shadowed
Option ROM Look for ROM signatures
of 55AA in extended memory then initialize the ROM and halt testing
while internal checks are carried out
External Cache Check controller chip
for external cache
CPU Internal Cache The CPU’s internal
cache is tested
Hardware Interrupts Initialize and test
video, floppy, hard I/O adapters, serial and parallel ports
Cassette Test internal or external
cassette drives
Boot Code Errors Errors occurring after
this point are normally a corrupt boot record

Phoenix XT 2.52 PnP BIOS Post Codes:

01 Test 8253 timer
02 First 64K RAM failed
03 First 1K parity check
failed
04 Initialize 8259 interrupt
controller
05 Second 1K RAM test, BIOS
data area, failed

Phoenix BIOS Plus or v1.0 BIOS Post Codes:

01 CPU register test in
progress
02 CMOS read/write failure
03 ROM BIOS checksum failure
04 Programmable interval
timer failure
05 DMA initialization failure
06 DMA page register read/write
failure
08 RAM refresh verification
failure
09 First 64K RAM test in
progress
0A First 64K RAM chip or
data line failure multi-bit
0B First 64K RAM odd/even
parity logic failure
0C Address line failure
in first 64K RAM
0D Parity failure in first
64K RAM
10 Bit 0 first 64K RAM failure
11 Bit 1 first 64K RAM failure
12 Bit 2 first 64K RAM failure
13 Bit 3 first 64K RAM failure
14 Bit 4 first 64K RAM failure
15 Bit 5 first 64K RAM failure
16 Bit 6 first 64K RAM failure
17 Bit 7 first 64K RAM failure
18 Bit 8 first 64K RAM failure
19 Bit 9 first 64K RAM failure
1A Bit a(10) first 64K RAM
failure
1B Bit B(11) first 64K RAM
failure
1C Bit C(12) first 64K RAM
failure
1D Bit D(13) first 64K RAM
failure
1E Bit E(14) first 64K RAM
failure
1F Bit F(15) first 64K RAM
failure
20 Slave DMA register failure
21 Master DMA register failure
22 Master interrupt mask
register failure
23 Slave interrupt mask
register failure
25 Interrupt vector loading
in progress
27 8042 keyboard controller
test failure
28 CMOS power failure/checksum
calculation in progress
29 CMOS configuration validation
in progress
2B Screen memory test failure
2C Screen initialization
failure
2D Screen retrace test failure
2E Search for video ROM
in progress
30 Screen believed running
with video ROM
31 Mono monitor believed
operational
32 Color monitor (40 columns)
believed operational
33 Color monitor (80 columns)
believed operational
34 Timer tick interrupt
in progress or failed (non-fatal)
35 Shutdown failure (non-fatal)
36 Gate A20 failure (non-fatal)
37 Unexpected interrupt
in protected mode (non-fatal)
38 Memory high address line
failure at 01000-0A000 (non-fatal)
39 Memory high address line
failure at 100000-FFFFFF (non-fatal)
3A Timer chip counter 2
failed (non-fatal)
3B Time of day clock stopped
3C Serial port test
3D Parallel port test
41 System board select bad
42 Extended CMOS RAM bad

Phoenix UMC chipset PCI BIOS Post Codes:

02 Verify real mode operation
04 Get CPU type
06 Initialize system hardware
08 Initialize chipset registers
with initial POST values
09 Set in POST flag
0A Initialize CPU registers
0C Initialize cache to initial
POST values
0E Initialize I/O
10 Initialize power management
11 Load alternate registers
with initial POST values
12 Jump to user patch 0
14 Initialize keyboard controller
16 BIOS ROM checksum
18 8254 programmable interrupt
timer initialization
1A 8237 DMA controller initialization
1C Reset 8259 programmable
interrupt controller
20 Test DRAM refresh
22 Test 8742 keyboard controller
24 Set ES segment register
to 4GB
26 Enable address line A20
28 Autosize DRAM
2A Clear 512K base memory
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
initialize
36 Test check resume
37 Reinitialize the chipset
38 Shadow system BIOS ROM
39 Reinitialize 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 Initialize interrupt
vectors
44 Initialize BIOS interrupts
46 Check ROM copyright notice
47 Initialize manager for
PCI options ROM’s
48 Check video configuration
against CMOS
49 Initialize PCI bus and
devices
4A Initialize 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 512K
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
registers
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
messages
74 Test real time clock
76 Check for keyboard errors
7A Enable keylock
7C Setup 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 Reinitialize onboard
I/O ports
88 Initialize BIOS data
areas
8A Initialize extended BIOS
data area
8C Initialize floppy drive
controller
8E Hard disk autotype configuration
90 Initialize hard disk
controller
91 Initialize local bus
hard disk controller
92 Jump to user patch 2
94 Disable A20 address lines
96 Clear huge ES segment
register
98 Search for option ROM’s
9A Shadow options ROM’s
9C Setup power management
9E Enable hardware interrupts
A0 Set time of day
A2 Check key lock
A4 Initialize typematic
rate
A8 Erase F2 prompt
AA Scan for F2 keystroke
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)
C0 Try to boot with interrupt
19
D0 Interrupt handler error
D2 Unknown interrupt error
D4 Pending interrupt error
D6 Initialize option ROM
error
D8 Shutdown error
DA Extended block move
DC Shutdown 10 error

Phoenix PCI BIOS Post Codes:

02 If the CPU is in protected
mode, turn on gate A20 and pulse the reset line.  Forces a
shutdown 0.
04 On cold boot, save the
CPU type information value in the CMOS
06 Reset DMA controllers;
Disable video; Clear pending interrupts from real time clock; Setup
port B register
08 Initialize chipset control
registers to power on defaults
0A Set a bit in the CMOS
that indicates POST; used to determine if the current configuration
causes the BIOS to hang.  If true, default BIOS values set
on next POST
0C Initialize I/O module
control registers
0E External CPU caches initialized;
Cache registers set to default values
10/12/14 Verify response from
8742 keyboard controller
16 Verify BIOS ROM checksums
to zero
18 Initialize all three
8254 programmable interrupt timers
1A Initialize DMA command
register; Initialize 8 DMA channels
1C Initialize 8259 programmable
interrupt controller; ICW4 needed; Cascade and edge triggered mode
20 Test DRAM refresh by
polling refresh bit in post B
22 Test 8742 keyboard controller;
Self test send to keyboard controller and awaiting results; Read
the switch inputs from the 8742 keyboard controller and write the
keyboard controller command byte
24 Set ES segment register
to 4GB
26 Enable address line A20
28 Autosize DRAM
2A Clear first 64K of RAM
2C Test RAM address lines
2E Test first 64K bank of
memory by checking chip address line test and RAM test
30/32 Find true CPU speed (MHz)
34 Clear CMOS diagnostic
byte (register E); Check real time clock and verify battery; Checksum
the CMOS and verify for corruption
36/38/3A External cache is autosized
and its configuration for enabling later in POST
3C Configure advanced cache
features; Configure external cache’s configurable parameters
3E Read hardware configuration
from keyboard controller
40 Set system power-on speed
to the rate determined by the CMOS; If the CMOS is invalid, use
a lower speed
42 Initialize interrupt
vectors 0-77h to the BIOS general interrupt handler
44 Initialize interrupt
vectors 0-20h to proper values from the BIOS interrupt tables
46 Check copyright message
checksum
48 Check video configuration
4A Initialize both monochrome
and color graphics video adapters
4C/4E Display copyright message
50 Display CPU type and
speed
52 Test for the self-test
code if a cold start; Keyboard performs a self-test and sends and
AA if successful
54 Initialize keystroke
clicker during POST
56 Enable keyboard
58 Test for unexpected interrupts;
Check STI for hot interrupts; Test NMI for unexpected interrupts;
Enable parity checkers and read from memory checking for unexpected
interrupt
5A Display prompt “Press
F2 to Enter Setup”
5C Determine and test the
amount of memory available; Save total size to BIOS variable called
bdaMemorySize
5E Perform address of base
memory
60 Determine and test the
amount of extended memory available; Save the total size in the
CMOS at CMOSExtended
62 Perform and address line
test on A0 to the amount of memory available
68 External and CPU caches,
if present, are enabled
6A Display cache size on
screen if non-zero
6C Display BIOS shadow status
6E Display the starting
offset of the non-disposable section of the BIOS
70 Check flags in CMOS and
in the BIOS data area to see if any errors have been detected during
the POST
72 Check status bits for
configuration errors
74 Test real time clock
if the battery has lost power
76 Check status bits for
keyboard errors; Errors are displayed
78 Check for stuck keys
on the keyboard; Errors are displayed
7A Enable keylock
7C Setup hardware interrupt
vectors
7E Test coprocessor if present
80/82 Detect and install RS232
ports
84 Detect and install parallel
ports
86/88 Initialize timeouts/key
buffer/soft reset flags
8A Initialize extended BIOS
data area and initialize the mouse
8C Initialize the floppy
disks and display error message if failure was detected
8E Hard disk autotype detection
90 If the CMOS RAM is valid
and intact and fixed disks are defined, call the fixed disk initialization
routine to initialize the fixed disk system and take over the appropriate
interrupt vectors
92/94 Disable gate A20 address
line
96/98 Scan for ROM BIOS extensions
9E Enable hardware interrupts
A0 Set time of day
A2 Setup numlock indicator
A4 Initialize typematic
rate
A6 Initialize hard disk
autoparking
A8 Erase F2 prompt
AA Scan for F2 keystroke
AC Check to see if SETUP
should executed
AE Clear ConfigFailedBit
and InPostBit in CMOS
B0 Check for POST errors
B2 Set/clear status bits
to reflect POST complete
B4 One beep
B6 Check for password before
boot
B8 Clear global descriptor
table
BA Initialize the screen
saver
BC Clear parity error latch
BE Clear screen
C0 Try to boot with interrupt
19
D0/D2 If an interrupt occurs
before interrupts vectors have been initialized, interrupt handler
will check if 8259 programmable interrupt timer caused the interrupt
and which one; If error is unknown, InterruptFlag will be FF, otherwise,
it will hold the IRQ number that occurred
D4 Clear pending timer and
keyboard interrupts and transfer control to the double word address
located at RomCheck
D6/D8/DA Return from extended
block move

Phoenix ISA/EISA/MCA v3.07 BIOS Post Codes:

01 CPU register test in
progress
02 CMOS read/write failure
03 ROM BIOS checksum failure
04 Programmable interval
timer failure
05 DMA initialization failure
06 DMA page register write/read
failure
08 RAM refresh verification
failure
09 First 64K RAM test in
progress
0A First 64K RAM chip or
data line failure multi-bit
0B First 64K RAM odd/even
logic failure
0C Address line failure
in first 64K RAM
0D Parity failure in first
64K RAM
0E Fail-safe timer failure
0F Software NMI post failure
10 Bit 0 first 64K RAM failure
11 Bit 1 first 64K RAM failure
12 Bit 2 first 64K RAM failure
13 Bit 3 first 64K RAM failure
14 Bit 4 first 64K RAM failure
15 Bit 5 first 64K RAM failure
16 Bit 6 first 64K RAM failure
17 Bit 7 first 64K RAM failure
18 Bit 8 first 64K RAM failure
19 Bit 9 first 64K RAM failure
1A Bit A first 64K RAM failure
1B Bit B first 64K RAM failure
1C Bit C first 64K RAM failure
1D Bit D first 64K RAM failure
1E Bit E first 64K RAM failure
1F Bit F first 64K RAM failure
20 Slave DMA register failure
21 Master DMA register failure
22 Master interrupt mask
register failure
23 Slave interrupt mask
register failure
25 Interrupt vector loading
in progress
27 Keyboard controller test
failure
28 CMOS power failure; checksum
calculation in progress
29 CMOS RAM configuration
validation in progress
2B Screen memory test failure
2C Screen initialization
failure
2D Screen retrace test failure
2E Search for video ROM
in progress
30 Screen believed running
with video ROM
31 Mono monitor believed
operational
32 Color monitor (40 columns)
believed operational
33 Color monitor ( 80 columns)
believed operational
34 No time tick
35 Shutdown test in progress
or failure
36 Gate A20 failure
37 Unexpected interrupt
in protected mode
38 Memory high address line
failure at 01000-0A000; RAM test in progress or address failure
>FFFh
39 Memory high address line
failure at 100000-FFFFFF
3A Interval timer channel
2 test or failure
3B Time of day clock test
or failure
3C Serial port test or failure
3D Parallel port test or
failure
3E Math coprocessor test
3F Cache test (Dell)
41 System board select bad
(Micro Channel only)
42 Extended CMOS RAM bad
(Micro Channel only)

Phoenix 4.0 BIOS Post Codes:

02 Verify real mode
04 Get CPU type
06 Initialize system hardware
08 Initialize chipset registers
with initial POST values
09 Set in POST flag
0A Initialize CPU registers
0C Initialize cache to initial
POST values
0E Initialize I/O
10 Initialize power management
11 Load alternate registers
with initial POST values
12 Jump to UserPatch0
14 Initialize keyboard controller
16 BIOS ROM checksum
18 8254 programmable interrupt
timer initialization
1A 8237 DMA controller initialization
1C Reset 8254 programmable
interrupt timer
20 Test DRAM refresh
22 Test 8742 keyboard controller
24 Set ES segment register
to 4GB
28 Autosize DRAM
2A Clear 512K base RAM
2C Test 512K base address
lines
2E Test 512K base memory
32 Test CPU bus-clock frequency
37 Reinitialize the chipset
38 Shadow system BIOS ROM
39 Reinitialize the cache
3A Autosize cache
3C Configure advanced chipset
registers
3D Load alternate registers
with CMOS values
40 Set initial CPU speed
42 Initialize interrupt
vectors
44 Initialize BIOS interrupts
46 Check ROM copyright notice
48 Check video configuration
against CMOS
49 Initialize PCI bus and
devices
4A Initialize all video
adapters in system
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 512K
and 640K
60 Test expanded memory
62 Test extended memory
address lines
64 Jump to UserPatch1
66 Configure advanced cache
registers
68 Enable external and CPU
caches
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 real time clock
76 Check for keyboard errors
7C Setup hardware interrupts
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 Re-initialize on-board
I/O ports
88 Initialize BIOS data
area
8A Initialize extended BIOS
data area
8C Initialize floppy controller
90 Initialize hard disk
controller
91 Initialize local bus
hard disk controller
92 Jump to UserPatch2
94 Disable A20 address line
96 Clear huge ES segment
register
98 Search for option ROM’s
9A Shadow option ROM’s
9C Setup power management
9E Enable hardware interrupts
A0 Set time of day
A2 Check key lock
A8 Erase F2 prompt
AA Scan for F2 keystroke
AC Enter setup
AE Clear in-POST flag
B0 Check for errors
B2 POST done; prepare to
boot operating system
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 interrupt
19
D0 Interrupt handler error
D2 Unknown interrupt error
D4 Pending interrupt error
D6 Initialize option ROM
error
D8 Shutdown error
DA Extended block move
DC Shutdown 10 error
E2 Initialize the chipset
E3 Initialize refresh counter
E4 Check for forced flash
E5 Check HW status of ROM
E6 BIOS ROM is ok
E7 Do a complete RAM test
E8 Do OEM initialization
E9 Initialize interrupt
controller
EA Read in bootstrap code
EB Initialize all vectors
EC Boot the flash program
ED Initialize the boot device
EE Boot code was read ok

Phoenix 4.0 Release 6.0 BIOS Post Codes:

02 Verify real mode
03 Disable non-maskable
interrupt (NMI)
04 Get CPU type
06 Initialize system hardware
07 Disable shadow and execute
code from the ROM
08 Initialize chipset with
initial POST values
09 Set IN POST flag
0A Initialize CPU registers
0B Enable CPU cache
0C Initialize caches to
initial POST values
0E Initialize I/O component
0F Initialize the local
bus IDE
10 initialize power management
11 Load alternate registers
with initial POST values
12 Restore CPU control word
during warm boot
13 Initialize PCI bus mastering
devices
14 Initialize keyboard controller
16 BIOS ROM checksum
17 Initialize cache before
memory autosize
18 8254 programmable interrupt
timer initialization
1A 8237 DMA controller initialization
1C Reset programmable interrupt
controller
20 Test DRAM refresh
22 Test 8742 keyboard controller
24 Set ES segment register
to 4GB
26 Enable gate A20 line
28 Autosize DRAM
29 Initialize POST memory
manager
2A Clear 512KB base RAM
2C RAM failure on address
line xxxx
2E RAM failure on data bits
xxxx of low byte of memory bus
2F Enable cache before system
BIOS shadow
30 RAM failure on data bits
xxxx of high byte of memory bus
32 Test CPU bus clock frequency
33 Initialize Phoenix Dispatch
Manager
36 Warm start shut down
38 Shadow system BIOS ROM
3A Autosize cache
3C Advanced configuration
of chipset registers
3D Load alternate registers
with CMOS values
41 Initialize extended memory
for RomPilot
42 Initialize interrupt
vectors
45 POST device initialization
46 Check ROM copyright notice
47 Initialize I20 support
48 Check video configuration
against CMOS
49 Initialize PCI bus and
devices
4A Initialize all video
adapters in system
4B QuietBoot start (optional)
4C Shadow video BIOS ROM
4E Display BIOS copyright
notice
4F Initialize MultiBoot
50 Display CPU type and
speed
51 Initialize EISA board
52 Test keyboard
54 Set key click if enabled
55 Enable USB devices
58 Test for unexpected interrupts
59 Initialize POST display
service
5A Display prompt “Press
F2 to enter SETUP”
5B Disable CPU cache
5C Test RAM between 512KB
and 640KB
60 Test extended memory
62 Test extended memory
address lines
64 Jump to UserPatch1
66 Configure advanced cache
registers
67 Initialize Multi Processor
APIC
68 Enable external and CPU
caches
69 Setup system management
mode (SMM) area
6A Display external L2 cache
size
6B Load custom defaults
(optional)
6C Display shadow area message
6E Display possible high
address for UMB recovery
70 Display error messages
72 Check for configuration
errors
76 Check for keyboard errors
7C Set up hardware interrupt
vectors
7D Initialize Intelligent
System Monitoring
7E Initialize coprocessor
if present
80 Disable onboard super
I/O ports and IRQ’s
81 Late POST device initialization
82 Detect and install external
RS232 ports
83 Configure non-MCD IDE
controllers
84 Detect and install external
parallel ports
85 Initialize PC compatible
PnP ISA devices
86 Reinitialize onboard
I/O ports
87 Configure motherboard
configurable devices (optional)
88 Initialize BIOS data
area
89 Enable non-maskable interrupts
(NMI’s)
8A Initialize extended BIOS
data area
8B Test and initialize PS/2
mouse
8C Initialize floppy controller
8F Determine number of ATA
drives (optional)
90 Initialize hard disk
controllers
91 Initialize local bus
hard disk controllers
92 Jump to UserPatch2
93 Build MPTABLE for multi
processor boards
95 Install CD ROM for boot
96 Clear huge ES segment
register
97 Fixup multi processor
table
98 Search for option ROM’s
99 Check for SMART drive
(optional)
9A Shadow option ROM’s
9C Set up power management
9D Initialize security engine
(optional)
9E Enable hardware interrupts
9F Determine number of ATA
and SCSI drives
A0 Set time of day
A2 Check key lock
A4 Initialize typematic
rate
A8 Erase F2 prompt
AA Scan for F2 key stroke
AC Enter setup
AE Clear boot flag
B0 Check for errors
B1 Inform RomPilot about
the end of POST
B2 POST done – prepare to
boot operating system
B4 One short beep
B5 Terminate QuietBoot (optional)
B6 Check password
B7 Initialize ACPI BIOS
B9 Prepare boot
BA Initialize DMI parameters
BB Initialize PnP option
ROM’s
BC Clear parity checkers
BD Display multiboot menu
BE Clear screen
BF Check virus and backup
reminders
C0 Try to boot with interrupt
19
C1 Initialize POST Error
Manager (PEM)
C2 Initialize error logging
C3 Initialize error display
function
C4 Initialize system error
handler
C5 PnP dual CMOS (optional)
C6 Initialize notebook docking

(optional)

C7 Initialize notebook docking
late
C8 Force check (optional)
C9 Extended checksum (optional)
CA Redirect Int 15h to enable
remote keyboard
CB Redirect Int 13 to Memory
Technologies Devices such as ROM, RAM, PCMCIA, and serial disk
CC Redirect Int 10h to enable
remote serial video
CD Re-map I/O and memory
for PCMCIA
CE Initialize digitizer
and dispaly message
D2 Unknown interrupt
The following are
for boot block in Flash ROM
E0 Initialize the chipset
E1 Initialize the bridge
E2 Initialize the CPU
E3 Initialize the system
timer
E4 Initialize system I/O
E5 Check force recovery
boot
E6 Checksum BIOS ROM
E7 Go to BIOS
E8 Set Huge Segment
E9 Initialize Multi Processor
EA Initialize OEM special
code
EB initialize PIC and DMA
EC Initialize Memory type
ED Initialize Memory size
EE Shadow Boot Block
EF System memory test
F0 Initialize interrupt
vectors
F1 Initialize Run Time Clock
F2 Initialize video
F3 Initialize System Management
Menager
F4 Output one beep
F5 Clear Huge Segement
F6 Boot to mini DOS
F7 Boot to Full DOS

Источник.