HP Kayak XU04 Specification sheet

1
HP MaxiLife®Hardware Monitoring
The described HP MaxiLife Hardware Monitoring feature is only valid for
HP Kayak XU Series 0441 and XW Series 0480 PC Workstations. These PC
Workstations are installed with the Intel Pentium® Xeon™processor.

2
HP MaxiLife® Hardware Monitoring
HP MaxiLife is a hardware monitoring chip which is resident on the system
board. Its responsibility includes On/Off and reset control, status panel
management (Lock button, LEDs), hardware monitoring (temperature and
voltage), early diagnostics (CPU, DIMMs, PLLs, boot start), run-time
diagnostics (CPU errors, package intrusions), and other miscellaneous
functions (such as special OK/FAIL symbols based on a smiling face).
HP MaxiLife Architecture
The HP MaxiLife chip continuously monitors temperature and voltage
sensors located in critical regions on the system board. This chip receives
data about the various system components via a dedicated I2C bus, which is
a reliable communications bus to control the integrated circuit boards.
LCD Status Panel
Serial EEPROM
PLLs (clocks) Speed up/slow down System Fans
I2C bus
HP MaxiLife
Pentium II
Xeon
Processor
Intel 440GX
AGPset
DIMM
DIMM
DIMM
DIMM
Package
Intrusion
Sensor Temperature
Sensors
Voltage
Sensors

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HP MaxiLife® Hardware Monitoring
The LCD Menu
To access the LCD main menu, press one of the LCD keys. This menu is
composed of several menu items which are displayed two at a time on the
LCD screen. The following menus are available:
•System Info. Obtains information from the BIOS and the system’s Serial
EEPROM from a previously successful boot. This information includes:
product name, BIOS version, serial number, the number of processors and
speed, size of memory for each DIMM socket. The BIOS logs information
in the serial EEPROM with SYSINFO.COM at the end of the boot.
•Boot Steps. Shows the Power-On Self-Test (POST) codes during the
system startup. The POST code is provided by the BIOS and is displayed
on the LCD panel as soon as it is available. If the system stops during the
startup, the last successful boot step POST code is displayed on the LCD.
•Diagnostics. Runs a set of diagnostics assessing the system’s components
(CPU presence, CPU power errors, power supply, clocks, and DIMM
presence). To view the test results for each system component, press
button. If no errors are detected, a screen will display a smiling face. If an
error is detected, an error screen appears indicating the problem.
Using HP MaxiLife When the Computer Is Powered Off
NOTE HP MaxiLife is powered by VSTBY. This means that it is functional as soon as
the power cord is plugged in. For HP MaxiLife to work correctly, the PC
Workstation must always be connected to a grounded outlet.
Even if the computer is powered off (the LCD status panel will be blank),
HP MaxiLife is still running and monitoring the state of the LCD buttons.
From this state, the diagnostics program can be run by pressing one of these
buttons. When the Power on option is selected, the main power supply is
started, enabling the hardware monitoring chip to access the status of the
computer’s components. Although the main power supply has been started,
the computer does not continue to complete a normal boot.
The system components are tested in sequence (press the Next button to
move on to the following test).

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HP MaxiLife® Hardware Monitoring
When the diagnostics tests are complete, one of the following screens will be
displayed:
If no errors are detected, you can exit the test session, and the main power
supply will be turned off and the LCD status panel will become blank.
If an error is detected, a short message is displayed on the LCD status panel
describing the type of error (memory, processor) that occurred. For
example, the message DIMM FOUND: 0 would be displayed if no memory
modules could be located. You can then choose whether to continue viewing
the results of the remaining tests.
NOTE If the Diags program is run when the system is off, it returns to the Off state
when exiting the test session. On/Off transitions are accompanied with a
‘Please wait’ screen to allow HP MaxiLife to power on and off correctly.
Diagnostics:
Done OK
Exit
Diagnostics:
Done FAIL
Exit

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
HP MaxiLife Test Sequence and Error Messages
When the PC is turned on (pressing the ON/OFF button), the system
initiates the normal startup sequence which is composed of the following
steps:
• Basic pre-boot diagnostics.
• BIOS launch.
• POST phase.
• Operating System boot phase.
If any errors are detected during the startup sequence, HP MaxiLife will not
necessarily ‘freeze’ the system. However, some critical hardware errors are
fatal to the system and will prevent the system from starting (for example,
‘Power’, and ‘Board PLL’ are serious malfunctions that will prevent the CPU
to work correctly)
Errors that are not so critical (for example, ‘CPU Socket’ for missing
terminator, or ‘NO RAM’) will be detected both during pre-boot diagnostics
and POST where the BIOS boot process will abort after beeping. The
MaxiLife LCD status panel will display the error. Some errors, such as the
‘RAM type’ error, are only detected during POST sequence, and will entail
the same abort process.
Finally, while the PC is working, fan and temperature controls can be
reported (for example, a fan error will be reported if a fan cable is not
connected). This type of error disappears dynamically when the problem
has been fixed (for example, the fan cable has been reconnected).
The different diagnostics are described below.
Basic Pre-boot Diagnostics
The first diagnostic (called basic pre-boot diagnostics) is run to check the
presence of the processor(s) or terminators, VRMs, power supply, CPU
Board PLL and DIMMs.
The pre-boot diagnostic tests are run in order of priority with respect to
their importance to computer functions. Refer to the table BIOS Launch and
POST Phase, on page 9 for test sequences, failure messages and action to
take to solve any problems.

6
HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
The first detected error displays a message on the LCD status panel. If this
happens, one of the following screens could appear.
The following diagram shows how the Pre-boot Diagnostics works when it
encounters an error.
Error!
Power supply
Error!
CPU Socket
Error!
Power CPU 1
Error!
Board PLL
Missing or
incorrectly installed
CPU or Terminator.
Presence of CPUs or
Terminators in the Processor Slots Control of Some Voltages: VRMs, 12V
Error!
Power CPU 2
VRM or CPU power supply are not connected.
If an Error ! Power is displayed, the likely cause could be t
h
the power supply is not connected, or the VRM is installed
w
an unpopulated CPU socket (unsupported configuration).
CPU Board is not connected, or the
system board needs replacing.
Control of the CPU Board
Error!
RAM type
No Dimms are
detected.
Number and Compatibility of
DIMMs
Installed DIMMs are not
compatible. This is in fact
the BIOS that is checking
the inserted DIMMs.
Error!
No RAM
Video board is not installed.
This test is executed by the
BIOS.
Video Board
Error!
No Video
Error!
CPU Socket
HP MaxiLife Firmware
LCD Status Panel
I2C Bus
DIMM 2
Voltage CPU1, CPU2
Voltage 12V
CPU or Terminator
PLL Frequence
Vcc State (5V)
PGOOD (VRM output)
An error has been detected when checking the
CPU and Terminator. The displayed error mes-
sage could indicate a missing CPU or Terminator.
DIMM 1

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
The following table shows the test sequence carried out, the type of error
message, and the action to take.
Table 1 Basic Pre-boot Diagnostics
Test Error Code Action to Take
Presence of a processor in the BOOT PROC [1]
processor slot. This is test is for a single
processor system only.
NO CPU 1 • Check that the processor is correctly installed in the BOOT
PROC [1] slot.
Presence of either CPU or Terminator in the
processor slot.
CPU SOCKET • Check CPUs and Terminator and VRM of installed processor.
Number of installed DIMMs NO RAM • Check that the memory module is correctly installed in the
memory socket.
Control of some voltages: VRMs, 12V POWER SUPPLY • Check the power supply connectors, VRM, CPU. In a single
processor system, check that the VRM is not plugged into the
terminator socket.
The error message could also show: Power CPU1 and Power
CPU2.
Test of the correct power signals to the CPU.
The power supply may be OK, whereas the VRM
is not.
POWER • Check that the VRM, processor and terminator are correctly
installed.
• Check that the VRM is not plugged on a socket with a
terminator (this could be the likely cause).
• Check or replace the VRM.
• Check the power supply unit connectors.
Presence of VRMs and their associated
processor.
POWER CPU • Check that the VRMs are correctly installed in their VRM
sockets.
POWER CPU 1 - Check VRMs sockets 1 and 2.
POWER CPU 2 - Check VRM socket 3.
POWER CACHE - Check VRM socket 2.
Presence of a VRM in VRM socket 2. This test is
for both single and dual processor systems.
POWER CACHE • Check that the VRM is correctly installed in VRM socket 2.
Check the system board clock generators (PLL). BOARD PLL • Check the power supply connector.
• Replace the system board (PLL clock generator).
Compatibility of DIMMs. The BIOS checks that
the inserted DIMMs are both compatible with
one another, and compatible with the Front Side
Bus frequency.
RAM TYPE • Check the installed memory modules. This error occurs when
mixing incompatible memory modules, or when mixing
Unbuffered and Registered memory modules.

8
HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
Post Test Sequence and Post Error Codes
In order to check that the CPU is able to run the BIOS boot code (POST
phase) from the first CPU instructions through to DIMM detection, HP
MaxiLife firmware waits for a synchronization event from the BIOS. Any
failure that prevents the execution of the firmware will therefore trigger the
BIOS error and will display the following message on the LCD status panel.
Then, the BIOS executes the Power-On Self Test (POST) sequence. In this
phase, HP MaxiLife waits for any error messages that the BIOS may issue. If
such an error occurs, then a screen similar to the following example is
displayed. The error code that appears on the LCD status panel is the same
as the one that appears on the PC screen. If the POST issues several error
codes, only the last one is visible on the LCD status panel.
Availability of video controller. It is checked by
the BIOS. If an error is detected, it is not a fatal
one and the BIOS will continue its execution
normally.
NO VIDEO • Check that the video controller is correctly installed.
Note: No error is detected if a monitor is not connected to an
installed video controller. This is not a fatal error and the BIOS will
continue its normal execution.
Table 1 Basic Pre-boot Diagnostics
Test Error Code Action to Take
Error!
BIOS
Error!
POST XXXX Where XXXX = POST
error code

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
The following diagrams show the different BIOS-generated errors.
Operating System Boot Phase
If no error message has been displayed at this stage of the system startup by
the BIOS, the operating system is launched and the LCD status panel will
display the system platform and a “smiling icon.”
BIOS
LCD Status Panel
DIMM 1
There is a timeout of 3 sec-
onds before the message is
displayed on the LCD status
panel and video display.
“read DIMM 1” HP MaxiLife
“Spy DIMM 1”
“BIOS” ERROR
Error!
BIOS
Error!
No Video
“BIOS”-Generated Errors
DIMM 1
DIMM 2
Video
Slots
BIOS
System issues a Beep Code
before attempting to
display the error code.
“No Video”
“RAM type” HP MaxiLife
LCD Status Panel
Table 2 BIOS Launch and POST Phase
Test Error Code Action to Take
In order to detect whether the CPU is able to run
a given code, HP MaxiLife waits for a
synchronization event from the BIOS. Any failure
that prevents the execution of the firmware will
trigger an error.
BIOS • Flash the latest version of the system BIOS by using the system
recovery procedure. Set switch 10 to the down position.
• Check that the RAM is correctly installed.
• Check that the CPU is firmly inserted.
The BIOS then executes the Power On Self Test
(POST) sequence. In this phase, HP MaxiLife
waits for any error messages that the BIOS may
issue.
POST XXXX • If the screen is working, you can obtain the meaning of the
error by typing “Enter” at the end of the POST. Or, you can
check the list of errors available on the HP World-Wide Web
support page: http://www.hp.com/go/kayaksupport

10
HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
Run-Time Errors
During the normal usage of the PC, HP MaxiLife continualy checks some of
the vital system parameters. These include: temperature errors, fan
malfunctions, power voltage drops, board PLL problems and CPU problems.
If several alarms or errors are active at the same time, they will be displayed
by cycling every second through four “alarm sources”, with one error cause
for each source:
• Pre-boot diagnostics.
• Run-Time error 1.
• Run-Time error 2.
• POST error.
The run-time errors are organized into two different sources.
Run-Time error 1: “Temperature I/O slot”, “Power errors”, “Fan CPU”,
“Board PLL”.
Run-Time error 2: “Temperature disk”, “Temperature CPU”, “Fan disk”,
“Fan I/O slot”, “CPU error”.
If both fan for disks and I/O slot are not connected (both are run-time
error 1), only the “Fan disk” (run-time error 2) will be displayed.
Main Menu
The main menu is displayed when any of the LCD buttons from are presed
(HP MaxiLife LCD status panel can be accessed even though the PC is
turned off). The Main Menu comprises of three sub-menus: System Info,
Boot Steps and Diagnostics.
Table 3 Run-Time Errors
Test Error Code Action to Take
During normal usage of the PC, HP MaxiLife
continually checks vital system parameters. If an
error should occur, a message would be
automatically displayed on the LCD panel.
FAN CPU • Check the connection of the corresponding component, which
could be: “Temp IO slot”, “Power errors, “Fan CPU”, “Board
PLL”, “Temp disk”, “Temp CPU”, “Fan disk”, “Fan IO slot”, “CPU
error”.1
1. Special cases: Board PLL = System board needs replacing. CPU error = Reset or power off the system to recover.

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
System Info Obtains information from the BIOS and the system’s Serial EEPROM from a
previously successful boot. This information includes: product name (HP
Kayak XU, or XW), BIOS version, serial number, number of processors and
speed, size of memory for each DIMM socket.
The following diagram shows how the System Info obtains its information.
Boot Steps Shows the Power-On Self-Test (POST) codes during the system startup. The
POST code is provided by the BIOS and is displayed on the LCD panel as soon
as it is available. If the system stops during the startup, the last successful
boot step POST code is displayed on the LCD. When Boot Steps is selected,
the POST step will be shown on the LCD status panel during the subsequent
boot processes.
To ensure that HP MaxiLife is ready to display the first POST codes as soon
as possible, the Pre-boot diagnostics are not executed when the system is
booted with the Boot Steps option selected.
The following diagram shows how Boot Steps obtains its information from
the BIOS, and then displays a POST error if needed.
System Info
strings in EEPROM
HP KAYAK XU
LCD Status Panel
BIOS
Write
HP MaxiLife
DMI Table
Error!
POST XXXX
System info
Boot steps
Next Go
BIOS
“Write
POST
Code”
HP MaxiLife
HP KAYAK XU
POST Code 24
“Write
POST
ERROR”
This is a toggle item,
which is indicated
with a check mark.

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
Diagnostics Runs a set of diagnostics assessing the system’s components. Results of the
tests are displayed on the LCD status panel, one after another when the LCD
buttons are pressed.
For HP MaxiLife to access the status of some of the components, the power
supply has to be in the ON state. If the system is turned off when Diags is
launched, a menu will be displayed, requesting an authorization to power on
the PC. It is possible to cancel the diagnostic process and return to the
previous state by pressing the LCD key labelled “Back”. When “GO” is
selected, the main power supply is started but the PC is not allowed to do a
normal boot. The purpose of this is to allow only these devices that can be
tested to answer the diagnostic request from HP MaxiLife.
Components are tested in sequence when the “Next” button is pressed.
When they have all been checked, a diagnostic screen is shown. Depending
on the result of the diagnostics, the screen could indicate either:
OK or FAIL.
At the end of the test, you can exit the diagnostic mode by pressing the
LCD button. If the power supply was off when the diagnostics was started, it
will be turned off again.
The following diagram shows how the “Power On” is activated when the
main power supply of the PC is turned off.

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
COMPONENT
Next
Diagnostics:
Done FAIL
Exit
Diagnostics:
Done OK
Exit
Diags
Exit
Next Go
System info
Boot steps
Next Go
Next
Enter
Power on?
Back Go ON Request for
for Super I/O
NS317 chip
Enter
Please Wait
Please Wait
OFF Request for
Super I/O NS317
chip Test failureTest OK
Final diagnostic screen
could be either:

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
Typical Diag Error
Messages
Error!
CPU Socket
Processor VRM
HP KAYAK XU
When the Processor and VRM are
correctly installed, the “smiling
icon” is shown on the LCD status
panel.
Processor
VRM
If the Processor has only been
partly inserted in the processor slot
(opposite side to the VRM), then the
displayed message will indicate a
CPU socket error.
Error!
Power CPU 1
Error!
Power supply
Error!
CPU Socket
Processor
VRM
If the Processor has only been
partly inserted in the processor slot
(closest side to the VRM), then the
displayed message will indicate a
Power CPU 1 error.
Processor
VRM
The Processor has not been inserted
correctly in the processor slot. The
displayed message will indicate a
CPU socket error.
Processor
The Processor has been correctly
installed in the processor slot. How-
ever, the VRM is not installed. The
displayed message will indicate a
Power CPU 1 error.
Error!
Power CPU 1
There is no installed Processor.
However, the VRM is correctly
installed. The displayed message
will indicate a Power error.
VRM
If one of the following fatal malfunctions occur, the displayed message will
indicate a BIOS error:
The BIOS no longer works.
There is no Flash.
Error!
BIOS

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HP MaxiLife® Hardware Monitoring
HP MaxiLife Test Sequence and Error Messages
The components tested are described in the following table:
For More Information
About HP MaxiLife
Refer to the online Upgrade and Configuration Guide for more
information about this diagnostics utility at the HP World Wide Web site:
http://www.hp.com/go/kayaksupport.
Table 4 Main Menu Diagnostics
Test Error Code Action to Take
Presence of either CPU or Terminator in the
processor slot.
CPU SOCKET • Check CPUs and Terminator and VRM of installed processor.
Control of some voltages: VRMs, 12V POWER SUPPLY • Check the power supply connectors, VRM, CPU.
The error message could also show: Power CPU1 and Power
CPU2.
Test of the correct power signals to the CPU.
The power supply may be OK, whereas the VRM
is not.
POWER • Check that the VRM, processor and terminator are correctly
installed.
• Check that the VRM is not plugged in a socket with a
terminator (this could be the likely cause).
• Check or replace the VRM.
• Check the power supply unit connectors.
Check frequency of the system board (PLL). BOARD PLL • Check the power supply connector.
• Replace the system board (PLL clock generator).
Number of installed DIMMs NO RAM • Check that the memory module is correctly installed in the
memory socket.
Compatibility of DIMMs. The BIOS checks that
the inserted DIMMs are both compatible with
one another, and compatible with the Front Side
Bus frequency.
RAM TYPE • Check the installed memory modules. This error occurs when
mixing incompatible memory modules, or when mixing
Unbuffered and Registered memory modules.

16
HP MaxiLife® Hardware Monitoring
Order in Which the Tests Are Performed
Order in Which the Tests Are Performed
Each time the system is powered on, or a reset is performed, the POST is
executed. The POST process verifies the basic functionality of the system
components and initializes certain system parameters.
The POST starts by displaying a graphic screen of the HP PC Workstation’s
logo when the PC is restarted. If you wish to view the POST details, press
to get the HP Summary Screen.
If the POST detects an error, the error message are displayed inside a view
system errors screen, in which the error message utility (EMU) not only
displays the error diagnosis, but the suggestions for corrective action (see
page 24 for a brief summary). Error codes are no longer displayed.
Devices, such as memory and newly installed hard disks, are configured
automatically. The user is not requested to confirm the change. Newly
removed hard disks are detected, and the user is prompted to confirm the
new configuration by pressing . Note, though, that the POST does not
detect when a hard disk drive has been otherwise changed.
During the POST, the BIOS and other ROM data is copied into high-speed
shadow RAM. The shadow RAM is addressed at the same physical location
as the original ROM in a manner which is completely transparent to
applications. It therefore appears to behave as very fast ROM. This
technique provides faster access to the system BIOS firmware.
An example of an Error
Code Message
This example explains the different coding messages that appear in the lower
left corner of the screen when the POST detects an error during startup.
For example, if the error 0101 - 52 is displayed.
•0101 - Post Error Code failure. This error code is accompanied by a short
message. For this example, the message “keyboard error” is displayed.
A table listing the error codes, causes and symptoms is on page 25.
•52 - Post Checkpoint Code. This checkpoint code indicates that a test has
failed at this stage of the POST.
A table listing the error codes, and POST routine descriptions is on the
following page.

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HP MaxiLife® Hardware Monitoring
Order in Which the Tests Are Performed
The following table lists the POST checkpoint codes written at the start of
each test.
Checkpoint
Code POST Routine Description
02h Verify Real Mode
03h Disable Non-Maskable Interrupt (NMI)
04h Get CPU type
06h Initialize system hardware
08h Initialize chipset with initial POST values
09h Set IN POST flag
0Ah Initialize CPU registers
0Bh Enable CPU cache
0Ch Initialize caches to initial POST values
0Eh Initialize I/O component
0Fh Initialize the local bus IDE
10h Initialize Power Management
11h Load alternate registers with initial POST values
12h Restore CPU control word during warm boot
13h Initialize PCI Bus Mastering devices
14h Initialize keyboard controller
17h Initialize cache before memory autosize
18h 8254 timer initialization
1Ah 8237 DMA controller initialization
1Ch Reset Programmable Interrupt Controller
24h Set ES segment register to 4 GB
26h Enable A20 line
28h Autosize DRAM
29h Initialize POST Memory Manager

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HP MaxiLife® Hardware Monitoring
Order in Which the Tests Are Performed
2Ah Clear 512 KB base RAM
32h Test CPU bus-clock frequency
33h Initialize POST Dispatch Manager
34h Test CMOS RAM
35h Initialize alternate chipset registers
36h Warm start shutdown
37h Reinitialize the chipset (MB only)
38h Shadow system BIOS ROM
39h Reinitialize the cache (MB only)
3Ah Autosize cache
3Ch Advanced configuration of chipset registers (V4.0, Release 6.0)
3Dh Load alternate registers with CMOS values
40h Set initial CPU speed
42h Initialize interrupt vectors
44h Initialize BIOS interrupts
45h POST device initialization
47h Initialize manager for PCI Option ROMs (Rel. 5.1 and earlier)
48h Check video configuration against CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh QuietBoot start (optional)1
4Ch Shadow video BIOS ROM
4Eh Display BIOS copyright notice
50h Display CPU type and speed
51h Initialize EISA board
Checkpoint
Code POST Routine Description

19
HP MaxiLife® Hardware Monitoring
Order in Which the Tests Are Performed
52h Test keyboard
54h Set key click if enabled
56h Enable keyboard
59h Initialize POST display service
5Ah Display prompt “Press F2 to enter SETUP”
5Bh Disable CPU cache
5Ch Test RAM between 512 and 640 KB
60h Test extended memory
62h Test extended memory address lines
64h Jump to UserPatch1
66h Configure advanced cache registers
67h Initialize Multi Processor APIC
68h Enable external and CPU caches
69h Setup System Management Mode (SMM) area
6Ah Display external L2 cache size
6Bh Load custom defaults (optional)1
6Ch Display shadow-area message
6Eh Display possible high address for UMB recovery
70h Display error messages
72h Check for configuration errors
74h Test real-time clock
76h Check for keyboard errors
7Ah Test for key lock on
7Ch Set up hardware interrupt vectors
7Eh Initialize coprocessor if present
Checkpoint
Code POST Routine Description

20
HP MaxiLife® Hardware Monitoring
Order in Which the Tests Are Performed
80h Disable onboard Super I/O ports and IRQs
81h Late POST device initialization
82h Detect and install external RS 232 ports
83h Configure non-MCD IDE controllers
84h Detect and install external parallel ports
85h Initialize PC-compatible PnP ISA devices
86h Re-initialize onboard I/O ports
87h Configure System Board Configurable Devices
88h Initialize BIOS Data Area
89h Enable Non-Maskable Interrupts (NMIs)
8Ah Initialize Extended BIOS Data Area
8Bh Test and initialize PS/2 mouse
8Ch Initialize floppy controller
8Fh Determine number of ATA drives (optional)1
90h Initialize hard disk controllers
91h Initialize local-bus hard disk controllers
92h Jump to UsersPatch2
93h Build MPTABLE for multi-processor boards
94h Disable A20 address line (Rel. 5.1 and earlier)
95h Install CD ROM for boot
96h Clear huge ES segment register
97h Fixup Multi Processor table
99h Check for SMART drive (optional)1
9Ah Shadow option ROMs
9Ch Set up Power Management
Checkpoint
Code POST Routine Description