Samsung P560 Service Manual page 161

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4. Troubleshooting
POST Code
0x6C Display shadow message
0xCA post EISA init
Check flags in CMOS and in the TrustedCore data area for errors detected
0x70
during POST. Display error messages on the screen.
Check status bits to see if configuration problems were detected.
0x72
If so, display error messages on the screen.
0x4F Initialize MultiBoot. Allocate memory for old and new MultiBoot history tables.
0xCD Reclaim console vector after HW vectors initialized.
0x7D Initialize Intelligent System Monitoring.
The Coprocessor initialization test. Use the floating point instructions to
0x7E
determine if a coprocessor exists instead of the ET bit in CR0.
0xC1 Check Boot Type (Server BIOS)
0x80 Disable onboard COM and LPT ports before testing for presence of external I/O devices.
0xCA Redirect Int 15h to enable target board to use remote keyboard (PICO BIOS).
0x88 Initialize interrupt controller.
0x81 Run late device initialization routines.
0x87 Initialize motherboard configurable devices.
0x85 Display any ESCD read errors and configure all PnP ISA devices.
0x82 Test and identify RS232 ports.
0x84 Test and identify parallel ports.
0x86 Initialize onboard I/O and BDA according to CMOS and presence of external devices.
0x83 Configure Fisk Disk Controller.
0xCE Initialize digitizer device and display installed message if successful.
0x89 Enable non-maskable interrupts.
Initialize both of the floppy disks and display an error message if failure was
0x8C detected. Check both drives to establish the appropriate diskette types in the
TrustedCore data area
Redirect Int 13h to Memory Technologies Devices such as ROM, RAM,
0xCB
PCMCIA, and serial disk (PICO BIOS).
0xCD Remap I/O and memory address space for PCMCIA (PICO BIOS).
Initialize hard-disk controller. If the CMOS ram is valid and intact, and fixed
0x90 disks are defined, call the fixed disk init routine to initialize the fixed disk
system and take over the appropriate interrupt vectors.
0x8B Setup interrupt vector and present bit in Equipment byte.
1. Check CMOS for CD-ROM drive present
2. Activate the drive by checking for media present
3. Check sector 11h (17) for Boot Record Volume Descriptor
0x95
4. Check the boot catalog for validity
5. Pick a boot entry
6. Create a Specification Packet
0x92 Jump to UserPatch2.
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.
Search for option ROMs. Rom scan the area from C800h for a length of BCP
0x98 _ROM_Scan_Size (or to E000h by default) on every 2K boundary, looking for
add on cards that need initialization.
0x93 Build the MPTABLE for multi-processor boards
0xD9 IPMI late init
0x9C Set up Power Management. Initiate power-management state machine.
0xC7 Late note dock init
0x9E Enable hardware interrupts
Function
4-11
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