BIOS POST-Codes (Port 80 status indicators)

Transcription

1 BIOS POST-Codes (Port 80 status indicators) BIOS-POST codes are visible on the LCD-display (connected to the LCD-connector). Post-Code Overview: Standard system BIOS: 01h Initialize IPMI 02h Verify Real Mode 03h Disable non-maskable interrupt(nmi) 04h Get CPU type 06h Initialize system hardware 07h Pre-Init chipset (Shadow-Register) 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 16h BIOS ROM checksum 17h 18h 1Ah 1Ch Initialize cache before memory autosize Initialize 8254 timer Initialize 8237 DMA controller Reset programmable interrupt controller 20h Test DRAM refresh 22h Test 8742 keyboard controller 12 A26361-D2778-Z N19, edition 1

2 24h 26h Set segment register ES to 4GB access Enable A20 line 28h Autosize DRAM 29h 2Ah 2Bh Initialize POST memory manager Clear 512KB base RAM Initialize CMOS emulation 2Ch RAM failure on address line xxxx 2Eh RAM failure on data bits xxxx of low byte of memory bus 2Fh Enable cache before system BIOS shadow 30h RAM failure on data bits xxxx of high byte of memory bus 32h 33h 36h 38h 3Ah 3Bh 3Ch 3Dh 41h 42h 45h Test CPU bus-clock frequency Initialize Phoenix dispatch manager Warm start shut down Shadow system BIOS ROM Autosize cache Initialize debug services Advanced configuration of chipset registers Load alternate registers with CMOS values Initialize RomPilot support Initialize interrupt vectors POST device initialization 46h Check ROM copyright notice 48h 49h 4Ah 4Bh 4Ch 4Eh 4Fh 51h 52h Check video configuration against CMOS Initialize PCI bus and devices Initialize all video adapters in the system Start quiet boot Shadow video BIOS ROM Display BIOS copyright notice Pre-Initialize boot sequence Initialize EISA board Test keyboard A26361-D2778-Z N19, edition 1 13

3 54h 55h 57h Set key click if enabled USB initialization Initialize 1394 devices 58h Test for unexpected interrupts 59h 5Ah 5Bh 5Ch 60h 62h Initialize POST display service Display prompt "Press F2 to Enter Setup" Disable CPU cache Test RAM between 512KB and 640KB Test extended memory Test extended memory address lines 64h Jump to user patch 1 66h 67h 68h 69h 6Ah 6Bh 6Ch 6Eh 70h 72h 76h 7Ch 7Eh 80h 81h 82h 83h 84h 85h 86h Configure advanced cache registers Initialize multi processor APIC Enable external and CPU cache Setup system management mode(smm) area Display external L2 cache size Load custom defaults Display shadow-area message Display possible high address for UMB recovery Display error messages Check for configuration errors Check for keyboard errors Setup hardware interrupt vectors Initialize coprocessor if present Disable onboard super I/O ports and IRQs Late POST device initialization Detect and install external RS232 ports Configure non-mce IDE controllers Detect and install external parallel ports Initialize PC-compatible PnP ISA devices Re-initialize onboard I/O ports 14 A26361-D2778-Z N19, edition 1

4 87h 88h 89h 8Ah 8Bh 8Ch 8Fh 90h 91h Configure motherboard configurable devices(mcd) Initialize BIOS data area(bda) Enable non-maskable interrupt(nmi) Initialize extended BIOS data area(ebda) Test and initialize PS/2 mouse Initialize floppy controller Determine number of ATA drives Initialize hard disk controllers Initialize local bus hard disk controllers 92h Jump to user patch 2 93h 95h 96h 97h Build MP table for multi processor boards Install CD ROM for boot Set segment register ES to 64KB access Fixup multi processor table 98h 1-2 Search for option ROMs(Beeps on checksum errors) 99h 9Ah 9Ch 9Dh 9Eh 9Fh A0h A2h A4h A8h AAh ACh AEh B0h B1h B2h Check for SMART drive Shadow option ROMs Setup power management Initialize security engine Enable hardware interrupts Determine number of ATA and SCSI drives Set time of day Check key lock Initialize typematic rate Erase F2 prompt Scan for F2 key stroke Enter Setup Clear boot flag Check for errors Unload RomPilot support Prepare to boot operating system(post done) A26361-D2778-Z N19, edition 1 15

5 B3h Store CMOS emulation values to non-volatile area. B4h 1 One short beep before boot B5h B6h B7h B9h BAh BBh BCh BDh BEh BFh C0h C1h C2h C3h C4h C5h C6h C7h C8h C9h CAh CCh CDh D1h D2h D3h D4h D6h D7h Terminate quiet boot Check password ACPI support Prepare boot Initialize DMI parameters Initialize PnP option ROMs Clear parity checkers Display multi boot menu Clear screen Check virus and backup reminders Try to boot with INT19h Initialize POST error manager Initialize error logging Initialize error display function Initialize system error handler PnP and dual CMOS Initialize note dock Initialize note dock late Force check Extended checksum Serial Keyboard Support Serial Video Support PCM ATA Check Initialize BIOS stack and various working buffer Unknown interrupt Initialize Memory Reporting interface Determine CPU brand Initialize PCCards (CardBus,...) FirstWare support 16 A26361-D2778-Z N19, edition 1

6 D8h D9h DAh DBh DCh DDh DEh DFh E0h Initialize ASF Initialize IPMI, 2nd part Pre-Initialize PCIe devices FirstWare support, 2nd part Verify microcode update Initialize remote flash support Initilize PXE UNDI code Fujitsu specific initialization routines (U)EFI: Initialize non-volatile RAM. Power Supply Considerations Power connectors The D2778 is powered via a split plane power supply unit (PSU) using three +12 V rails providing 500 W continuous power and five +12 V lines providing 700 W continuous power. Three rails are intended for use with the system board and two for use with peripherals (hard disk, display adapter). There are two power connectors on this motherboard as listed below. 12V Power Connectors + 24-pin baseboard power connector 8-pin CPU power connector (split CPU power planes) A26361-D2778-Z N19, edition 1 17