Samsung P560 Service Manual page 162

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4. Troubleshooting
POST Code
0xA0 Setup time tick for current date/time
0xA2 Setup Numlock indicator. Display a message if key switch is locked.
0xA4 Initialize typematic rate
0xDB StrongROM Test
0xE2 OEM security key test
0xC2 Write PEM errors.
0xBA Initialize the SMBIOS header and sub-structures.
0xC3 Display PEM errors.
0xA8 Overwrite the "Press F2 for Setup" prompt with spaces, erasing it from the screen.
Scan the key buffer to see if the F2 key was struck after keyboard interrupts
0xAA
were enabled. If an F2 keystroke is found, set a flag.
0xE1 Start Periodic Timer (TC Subscribe)
0xAC Check if "Enter SETUP" is pressed.
Count the number of ATA drives in the system and update the number in
0x8F
bdaFdiskcount.
0x91 Configure the local bus IDE timing register based on the drives attached to it.
0x9F Check the total number of Fast Disks (ATA and SCSI) and update the bdaFdiskCount.
0xD7 Check if FirstWare HPA exists
0xAE Clear ConfigFailedBit and InPostBit in CMOS.
0xB0 Check for errors and decide if needs to run Setup.
Change status bits in CMOS and/or the TrustedCore data area to reflect the
0xB2
fact that POST is complete.
0xB5 Fade out OEM Logo or post string
0xC5 End hotkey detection (Server BIOS)
0xBE If BCP option is enabled, clear the screen before booting.
If password on boot is enabled, a call is made to Setup to check password.
0xB6
If the user does not enter a valid password, Setup does not return.
0xBC Clear parity-error latch
0xB7 Initialize ACPI BIOS.
0x9B Enable CPU management (Geyserville I)
0xBD Display Boot First menu if MultiBoot is installed and hotkey pressed.
0xBF Check virus and backup reminders.
0x97 Create pointer to MP table in Extended BDA.
Check support status for Self-Monitoring Analysis Reporting Technology
0x99
(disk-failure warning).
0xB1 Unload ROM Pilot
0xDD Perform remote flash if requested
0xC7 If UCR redirection is installed, remove display manager and unhook INT10
0XDF Shutdown the PXE UNDI code
0xB3 Store enhanced CMOS values in non-volatile area
0xE4 Last Legacy BIOS Task before hand off to UEFI/DXE
0xB9 Clear all screen graphics before booting.
0xC0 INT19 entry for legacy boot
0xEF Invalid AP #
0xEF Non-Yohna and non-Morem class CPU found for SDXE (getTSCFreq)
0xEE AP cannot synch BSP in SDXE (syncWithBSP)
0xEE BSP cannot synch w/ AP in SDXE (syncWithAP)
Function
4-12
Phase Component
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
LBT Core
bootLegacy Core
bootLegacy Core
SDXE Core
SDXE Core
SDXE Core
SDXE Core