HP Omnibook XT6050 Service Manual page 80

Beep Error POST Description
Codes* Code
2-1-3-1 48h Check video configuration against CMOS.
2-1-3-2 49h Initialize PCI bus and devices.
2-1-3-3 4Ah Initialize all video adapters in system.
2-1-3-4 4Bh QuietBoot start (optional).
2-1-4-1 4Ch Shadow video BIOS ROM.
2-1-4-3 4Eh Display BIOS copyright notice.
2-1-4-4 4Fh Initialize MultiBoot.
2-2-1-1 50h Display CPU type and speed.
2-2-1-2 51h Initialize EISA board.
2-2-1-3 52h Test keyboard.
2-2-2-1 54h Set key click if enabled.
2-2-2-2 55h Enable USB devices.
2-2-3-1 58h Test for unexpected interrupts.
2-2-3-2 59h Initialize POST display service.
2-2-3-3 5Ah Display prompt "Press F2 to enter SETUP".
2-2-3-4 5Bh Disable CPU cache.
2-2-4-1 5Ch Test RAM between 512 and 640 kB.
2-3-1-1 60h Test extended memory.
2-3-1-3 62h Test extended memory address lines.
2-3-2-1 64h Jump to UserPatch1.
2-3-2-3 66h Configure advanced cache registers.
2-3-2-4 67h Initialize Multi Processor APIC.
2-3-3-1 68h Enable external and CPU caches.
2-3-3-2 69h Set up System Management Mode (SMM)
area.
2-3-3-3 6Ah Display external L2 cache size.
2-3-3-4 6Bh Load custom defaults (optional).
2-3-4-1 6Ch Display shadow-area message.
2-3-4-3 6Eh Display possible high address for UMB
recovery.
2-4-1-1 70h Display error messages.
2-4-1-3 72h Check for configuration errors.
2-4-2-3 76h Check for keyboard errors.
2-4-4-1 7Ch Set up hardware interrupt vectors.
2-4-4-2 7Dh Initialize Intelligent System Monitoring.
2-4-4-3 7Eh Initialize coprocessor if present.
3-1-1-1 80h Disable onboard Super I/O ports and IRQs.
3-1-1-2 81h Late POST device initialization.
3-1-1-3 82h Detect and install external RS232 ports.
3-1-1-4 83h Configure non-MCD IDE controllers.
3-1-2-1 84h Detect and install external parallel ports.
3-1-2-2 85h Initialize PC-compatible PnP ISA devices.
3-1-2-3 86h Re-initialize onboard I/O ports.
3-1-2-4 87h Configure Motherboard Configurable Devices
(optional).
3-1-3-1 88h Initialize BIOS Data Area.
3-1-3-2 89h Enable Non-Maskable Interrupts (NMIs).
3-1-3-3 8Ah Initialize Extended BIOS Data Area.
3-1-3-4 8Bh Test and initialize PS/2 mouse.
3-1-4-1 8Ch Initialize floppy controller.
3-1-4-4 8Fh Determine number of ATA drives (optional).
3-2-1-1 90h Initialize hard-disk controllers.
3-2-1-2 91h Initialize local-bus hard-disk controllers.
3-2-1-3 92h Jump to UserPatch2.
3-2-1-4 93h Build MPTABLE for multi-processor boards.
3-2-2-2 95h Install CD-ROM for boot.
3-2-2-3 96h Clear huge ES segment register.
3-2-2-4 97h Fix up Multi Processor table.
3-2-3-2 99h Check for SMART Drive (optional).
3-2-3-3 9Ah Shadow option ROMs.
3-2-4-1 9Ch Set up Power Management.
3-2-4-2 9Dh Initialize security engine (optional).
3-2-4-3 9Eh Enable hardware interrupts.
3-2-4-4 9Fh Determine number of ATA and SCSI drives.
3-3-1-1 A0h Set time of day.
3-3-1-3 A2h Check key lock.
3-24 Troubleshooting and Diagnostics
Beep Error POST Description
Codes* Code
3-3-2-1 A4h Initialize typematic rate.
3-3-3-1 A8h Erase F2 prompt.
3-3-3-3 AAh Scan for F2 keystroke.
3-3-4-1 ACh Enter SETUP.
3-3-4-3 AEh Clear Boot flag.
3-4-1-1 B0h Check for errors.
3-4-1-2 B1h Inform RomPilot about the end of POST.
3-4-1-3 B2h POST done - prepare to boot OS.
3-4-2-2 B5h Terminate QuietBoot (optional).
3-4-2-3 B6h Check password (optional).
3-4-2-4 B7h Initialize ACPI BIOS.
3-4-3-2 B9h Prepare Boot.
3-4-3-3 BAh Initialize SMBIOS.
3-4-3-4 BBh Initialize PnP Option ROMs.
3-4-4-1 BCh Clear parity checkers.
3-4-4-2 BDh Display MultiBoot menu.
3-4-4-3 BEh Clear screen (optional).
3-4-4-4 BFh Check virus and backup reminders.
4-1-1-1 C0h Try to boot with INT 19.
4-1-1-2 C1h Initialize POST Error Manager (PEM).
4-1-1-3 C2h Initialize error logging.
4-1-1-4 C3h Initialize error display function.
4-1-2-1 C4h Initialize system error handler.
4-1-2-2 C5h PnPnd dual CMOS (optional).
4-1-2-3 C6h Initialize note dock (optional).
4-1-2-4 C7h Initialize note dock late.
4-1-3-1 C8h Force check (optional).
4-1-3-2 C9h Extended checksum (optional).
4-1-3-3 CAh Redirect Int 15h to enable remote keyboard.
4-1-3-4 CBh Redirect Int 13h to Memory Technologies
Devices such as ROM, RAM, PCMCIA, and
serial disk.
4-1-4-1 CCh Redirect Int 10h to enable remote serial
video.
4-1-4-2 CDh Re-map I/O and memory for PCMCIA.
4-1-4-3 CEh Initialize digitizer and display message.
4-2-1-3 D2h Unknown interrupt.
4-3-1-1 E0h Initialize the chipset.
4-3-1-2 E1h Initialize the bridge.
4-3-1-3 E2h Initialize the CPU.
4-3-1-4 E3h Initialize system timer.
4-3-2-1 E4h Initialize system I/O.
4-3-2-2 E5h Check force recovery boot.
4-3-2-3 E6h Checksum BIOS ROM.
4-3-2-4 E7h Go to BIOS.
4-3-3-1 E8h Set Huge Segment.
4-3-3-2 E9h Initialize Multi Processor.
4-3-3-3 EAh Initialize OEM special code.
4-3-3-4 EBh Initialize PIC and DMA.
4-3-4-1 ECh Initialize Memory type.
4-3-4-2 EDh Initialize Memory size.
4-3-4-3 EEh Shadow Boot Block.
4-3-4-4 EFh System memory test.
4-4-1-1 F0h Initialize interrupt vectors.
4-4-1-2 F1h Initialize Run Time Clock.
4-4-1-3 F2h Initialize video.
4-4-1-4 F3h Initialize System Management Manager.
4-4-2-1 F4h Output one beep.
4-4-2-2 F5h Clear Huge Segment.
4-4-2-3 F6h Boot to Mini DOS.
4-4-2-4 F7h Boot to Full DOS.
1 long, 98h Improper video configuration (replace
2 short motherboard) or external ROM checksum
failure.
HP Omnibook XT6050, XT/VT6200