c900795.R02_EN.pdf - 第101页

4 Electrical Section 4-27 Diagnostic Code Meaning Diagnostic Code Meaning 80h Disable onboard Super I/O ports and IRQs B0h Check for errors 81h Late POST device initialization B1h Inform RomPilot about the end of POST. 8…

4 Electrical Section

4-26

The detail of 7 segments LED indications is shown in the below table.

Diagnostic

Code

Meaning

Diagnostic

Code

Meaning

02h Verify processor mode 41h Initialize extended memory for RomPilot

03h Disable Non-Maskable Interrupt (NMI) 42h Initialize interrupt vectors

04h Get CPU type 45h POST device initialization

06h Initialize system hardware 46h Check ROM copyright notice

07h Disable shadow and execute code from the ROM. 47h Initialize I2O support

08h Initialize chipset with initial POST values 48h Check video configuration against CMOS

09h Set IN POST flag 49h Initialize PCI bus and devices

0Ah Initialize CPU registers 4Ah Initialize all video adapters in system

0Bh Enable CPU cache 4Bh QuietBoot start

0Ch Initialize caches to initial POST values 4Ch Shadow video BIOS ROM

0Eh Initialize I/O components 4Eh Display BIOS copyright notice

0Fh Initialize the local bus IDE 4Fh Initialize MultiBoot

10h Initialize Power Management 50h Display CPU type and speed

11h Load alternate registers with initial POST values 51h Initialize EISA board

12h Restore CPU control word during warm boot 52h Test keyboard

13h Initialize PCI Bus Mastering devices 54h Set key click if enabled

14h Initialize keyboard controller 55h Enable USB devices

16h BIOS ROM checksum 58h Test for unexpected interrupts

17h Initialize cache before memory autosize 59h Initialize POST display service

18h 8254 timer initialization 5Ah Display prompt "Press F2 to enter SETUP"

1Ah 8237 DMA controller initialization 5Bh Disable CPU cache

1Ch Reset Programmable Interrupt Controller 5Ch Test RAM between 512 and 640 KB

20h Test DRAM refresh 60h Test extended memory

22h Test 8742 Keyboard Controller 62h Test extended memory address lines

24h Set ES segment register to 4 GB 64h Jump to UserPatch1

28h Autosize DRAM 66h Configure advanced cache registers

29h Initialize POST Memory Manager 67h Initialize Multi Processor APIC

2Ah Clear 512 KB base RAM 68h Enable external and CPU caches

2Ch RAM failure on address line xxxx 69h Setup System Management Mode (SMM) area

2Eh RAM failure on data bits xxxx of low byte of memory

bus

6Ah

Display external L2 cache size

2Fh Enable cache before system BIOS shadow 6Bh Load custom defaults

32h Calculate CPU speed 6Ch Display shadow-area message

33h Initialize POST Dispatch Manager 6Eh Display possible high address for UMB recovery

34h Test CMOS RAM and RTC 70h Display error messages

36h Initialize shut down victor for warm start 72h Check for configuration errors

38h Shadow system BIOS ROM 76h Check for keyboard errors

3Ah Autosize cache 7Ch Set up hardware interrupt vectors for 08-0F and 70-77

3Ch Advanced configuration of chipset registers 7Dh Initialize Intelligent System Monitoring

3Dh Load alternate registers with CMOS values 7Eh Initialize coprocessor if present

4 Electrical Section

4-27

Diagnostic

Code

Meaning

Diagnostic

Code

Meaning

80h Disable onboard Super I/O ports and IRQs B0h Check for errors

81h Late POST device initialization B1h Inform RomPilot about the end of POST.

82h Detect and install external RS232 ports B2h POST done - prepare to boot operating system

83h Configure non-MCD IDE controllers B4h One short beep before boot

84h Detect existence of parallel ports B5h Terminate QuietBoot

85h Checking for PnP ISA devices B6h Check password

86h Re-initialize onboard I/O ports B7h Initialize ACPI-BIOS

87h Configure Motherboard Configurable Devices B9h Clear Screen

88h Initialize BIOS Data Area BAh Initialize SMBIOS

89h Enable Non-Maskable Interrupts (NMIs) BCh Clear parity checkers

8Ah Initialize Extended BIOS Data Area BDh Display MultiBoot menu

8Bh Test and initialize PS/2 mouse BEh Clear screen

8Ch Initialize floppy controller BFh Check virus and backup reminders

8Fh Determine number of ATA drives C0h Try to boot with INT 19

90h Initialize hard-disk controllers C1h Initialize POST Error Manager (PEM)

91h Initialize local-bus hard-disk controllers C2h Initialize error logging

92h Jump to UserPatch2 C3h Initialize error display function

93h Build MPTABLE for multi-processor boards C4h Initialize system error handler

95h Install CD ROM for boot C5h PnP dual CMOS

96h Clear huge ES segment register C6h Initialize note dock

97h Fixup Multi Processor table C7h Initialize note dock rate

98h Search for option ROMs. One long, two short beeps on

checksum failure

C8h

Force check

99h Check for SMART Drive C9h Extended checksum

9Ch

Set up Power Management

CBh

Redirect Int 13h to Memory Technologies Devices

such as ROM, RAM,PCMCIA, and serial disk

9Dh Initialize security engine CCh Redirect Int 10h to enable remote serial video

9Eh Enable hardware interrupts CDh Redirect Int 15h to enable remote keyboard

9Fh Determine number of ATA and SCSI drives CEh Initialize digitizer and display message

A0h Test Real Time Clock interrupt D2h Unknown interrupt

A2h Check key lock E0h Check memory mounting

A4h Initialize Typematic rate

A8h Erase F2 prompt

AAh Scan for F2 key stroke

ACh Enter SETUP

AEh Clear Boot flag

4 Electrical Section

4-28

Control Board

Handling Control Board

Note the followings when handling PC boards.

z Do not touch control boards by wet hands.

z Do not handle control boards where there are metal chips around.

z Wear an antistatic wrist strap and connect it with any metal part of the machine.

z Do not put an electrical board on the place where may cause the short circuit.