Samsung P560, Service Manual, Page: 161 / 393

4-11
4. Troubleshooting
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POST Code Function Phase Component
0x6C Display shadow message LBT Core
0xCA post EISA init LBT Core
0x70
Check flags in CMOS and in the TrustedCore data area for errors detected
during POST. Display error messages on the screen.
LBT Core
0x72
Check status bits to see if configuration problems were detected.
If so, display error messages on the screen.
LBT Core
0x4F Initialize MultiBoot. Allocate memory for old and new MultiBoot history tables. LBT Core
0xCD Reclaim console vector after HW vectors initialized. LBT Core
0x7D Initialize Intelligent System Monitoring. LBT Core
0x7E
The Coprocessor initialization test. Use the floating point instructions to
determine if a coprocessor exists instead of the ET bit in CR0.
LBT Core
0xC1 Check Boot Type (Server BIOS) LBT Core
0x80 Disable onboard COM and LPT ports before testing for presence of external I/O devices. LBT Core
0xCA Redirect Int 15h to enable target board to use remote keyboard (PICO BIOS). LBT Core
0x88 Initialize interrupt controller. LBT Core
0x81 Run late device initialization routines. LBT Core
0x87 Initialize motherboard configurable devices. LBT Core
0x85 Display any ESCD read errors and configure all PnP ISA devices. LBT Core
0x82 Test and identify RS232 ports. LBT Core
0x84 Test and identify parallel ports. LBT Core
0x86 Initialize onboard I/O and BDA according to CMOS and presence of external devices. LBT Core
0x83 Configure Fisk Disk Controller. LBT Core
0xCE Initialize digitizer device and display installed message if successful. LBT Core
0x89 Enable non-maskable interrupts. LBT Core
0x8C
Initialize both of the floppy disks and display an error message if failure was
detected. Check both drives to establish the appropriate diskette types in the
TrustedCore data area
0xCB
Redirect Int 13h to Memory Technologies Devices such as ROM, RAM,
PCMCIA, and serial disk (PICO BIOS).
0xCD Remap I/O and memory address space for PCMCIA (PICO BIOS).
0x90
Initialize hard-disk controller. If the CMOS ram is valid and intact, and fixed
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.
0x95
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
4. Check the boot catalog for validity
5. Pick a boot entry
6. Create a Specification Packet
LBT Core
0x92 Jump to UserPatch2. LBT Core
0xB6
If password on boot is enabled, a call is made to Setup to check password.
If the user does not enter a valid password, Setup does not return.
LBT Core
0x98
Search for option ROMs. Rom scan the area from C800h for a length of BCP
_ROM_Scan_Size (or to E000h by default) on every 2K boundary, looking for
add on cards that need initialization.
LBT Core
0x93 Build the MPTABLE for multi-processor boards LBT Core
0xD9 IPMI late init LBT Core
0x9C Set up Power Management. Initiate power-management state machine. LBT Core
0xC7 Late note dock init LBT Core
0x9E Enable hardware interrupts LBT Core