Biostar P31B-A7 BIOS MANUAL

P31B-A7 BIOS M anual

i

B IOS Set up.... ............ ............ ............ ............ ............ ............ ............ .........1

1 Main Menu...............................................................................................3

2 Adv anced Menu...... ............ ............ ............ ............ ............ ............ .........7

3 PCIPnP Me nu........................................................................................18

4 Boot Menu..............................................................................................22

5 Chipse t Menu.........................................................................................2 4

6 Performance Menu...............................................................................2 8

7 Exit Menu...............................................................................................30

P31B-A7 BIOS Manual

BIOS Setup

Introduction

The purpose of this manual is to describe the settings in the AMI BIOS Setup
program on this motherboard. The Setup program allows users to modify the basic

system configuration and save these settings to CMOS RAM. The power of CMOS
RAM is supplied by a battery so that it retains the Setup information when the power
is turned off.

Basic Input-Output System (BIOS) determines what a computer can do without
accessing programs from a disk. T his system controls most of the input and output

devices such as keyboard, mouse, serial ports and disk drives. BIOS activates at the
first stage o f the booting process, l oading and executing t he operating system. S ome
additional features, such as virus and password protection or chipset fine-tuning
options are also included in BIOS .
T he rest of this manual will to guide you through the options and settings in BIOS
Setup.

Plug and Play Support

T his AM I BIOS supports the Plug and Play Version 1. 0A specific ation.

EPA Green PC Support

T his AM I BIOS supports Version 1.03 of t he EPA Green PC specification.

APM Support

This AMI BIOS supports Version 1.1&1.2 of the Advanced Power Management
(AP M) speci fic ation . Power m an agement fe atures a re implement ed vi a the Syst em

Management Interrupt (SMI). Sleep and Suspend power management modes are
supported. Power to the hard disk drives and video m onitors can also be managed by

this AMI BIOS.

ACPI Supp ort

AMI ACPI BIOS support Version 1.0/2.0 of Advanced Configuration and Power
interface specifi cation (ACPI). It provides ASL code for power m anagement and

device con figuration capabilities as defined in the ACPI specification, developed by
Microsoft, Intel and T oshiba.

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P31B-A7 BIOS Manual

PCI Bus Support

T his AMI BIOS also supports Version 2.3 of the Intel P CI (Peripheral Component
Int erconn ect ) local b u s s p eci fi cati on .

DRA M Support

DDR2 SDR AM (Double Data Rate II Synchronous DR AM) is supported.

Su ppor t e d CP Us

T his AM I BIOS supports the Int el CP U.

Using Setup

When starting up the computer, press

<Del> during the Power-On Self-Test
(POST) to enter the BIOS setup utility.

In the BIOS setup utility, you will see
General Help description at the top right

corner, and this is providing a brief
description of the selected item.
Navigation Keys for that particular menu

are at the bottom right corner, and you can
us e thes e keys to sele ct i tem an d ch ange
the settings.

Notice

z T he default BIOS settings apply for most conditions to ensure optimum performan ce

of the motherboard. If the system becomes unstable after changing any settings,
please load the default settings to ensure system’s compatibility and stability. Use

Load S etup Default under the Exit Menu.

z For better system perform ance, the BIOS firmware is being continuously updated.

T he BIOS information described i n this manual is for your reference only. The actual
BIOS information and s ettings on board may be slightly different from this manual.

z T he content of this manual is subject to be changed without notice. W e will not be

responsibl e for any mistakes found in this user’ s manual and any system damage that
may be caused by wrong-settings.

General Help

Navigation Keys

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P31B-A7 BIOS Manual

1 Main Menu

Once you enter AMI BIOS Setup Utility, the Main Menu will appear on the screen
providing an overview of the basic system inform ation.

Main Advanc ed PCIPnP Boot Chipset Performance

System Overview
AMI BIOS

Version :01.0 1.01
Build Date:01/0 1/08

System Memory

Size :

System Time 00

System Date [Tue 01/01/2008]
Floppy A
> IDE Configura tion

vxx. xx (C)Copyright 1985-200x, American Megatrends, Inc.

AM I BI O S

BIOS SETUP UTILITY

[ :0 0:00]

Exit

Use [ENTER], [TAB]
or [SHIFT-TAB] to

select a field.
Use [+] or [-] to

configure system Time.

Se lect Screen
Se lect Item
Ch ange Field

+-

Se lect Field

Tab

Ge neral Help

F1

Sa ve and Exit

F10

Exit

ESC

Shows syst em informati on including BIOS version, built date, etc.

System Memory

Shows syst em memory size, VGA shard memory will be excluded..

System Time

Set the system internal clock.

System Date

Set the system date. Note that the ‘Day’ automatically changes when you set the
date.

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P31B-A7 BIOS Manual

Floppy A

Select the type of fl oppy disk drive installed in your s ystem.
Options: 360K, 5. 25 in / 1. 2M, 5.25 in / 720K, 3. 5 in / 1.44M, 3. 5 in /

2.88M, 3.5 in / None

IDE Configuration

Th e BIO S w i ll au t o m aticall y d et ect t h e presen ce o f ID E/SAT A d evices . Th ere i s a
su b-menu fo r each IDE/S AT A devi ce. Select a devi ce an d pres s <Enter> to enter

the sub-menu of detailed options.

Main

IDE Confuguration

ATA/IDE Configurat ion [ Enhanced]

Configure SATA C hannels [ Before PATA]
Legacy IDE Chann els [ SATA Pri, PATA Sec]

> SATA1 DEVICE
>

SATA2 DEVICE

>

SATA3 DEVICE

> SATA4 DEVICE
> IDE Channel 1 Ma ster
> IDE Channel 1 Sl ave

Hard Disk Write Pr otect [ Disabled]
IDE Detect Time Ou t (Sec) [ 35]

BIOS SETUP UTILITY

Options

Disabled
Compatible

Enhanced

Select Screen
Select Item

Go to Sub Scr een

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

ATA/IDE Configuration

T his i tem allows you to control the onboard IDE controller.
Options: Enhanced (De fault) / Compatible / Disabled

Configure SATA Channe l s

T his i tem allows you to control the S ATA channel configuration sequenc e.
Options: B efo re PATA (Default) / Behind PAT A

Legacy IDE Channels

T his item appears only when “ AT A/IDE Configuration” is set to “Compatible”.
Options: SATA Pri, PATA Sec (Default) / SATA Only / PATA Pri, SATA Sec /

PAT A Only

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P31B-A7 BIOS Manual

SATA1/2/3/4 Device; IDE Channel 1 Master/Slave

Main

SATA1 Device

Device :

Type [ Auto]

LBA/Large Mode [ Auto]
Block (Multi-Secto r Transfer)[ Auto]
PIO Mode [ Auto]
DMA Mode [ Auto]

S.M.A.R.T [ Auto]
32Bit Data Transfe r [ Enabled]

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

BIOS SETUP UTILITY

Options

Not Installed
Auto

CD/DVD
ARMD

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

The BIOS detects the information and values of respective devices, and these
information and values are shown below to the nam e of the sub-menu.

Type

Select the type of the IDE/SATA drive.
Opti ons: Auto (De fault) / C D/DVD / AR MD / Not Inst alled

LBA/Large Mode

Enabl e or disable the LB A mode.
Options: Auto (Default) / Disabled

Block (Multi-S ector Transfer)

En able o r d i s ab l e m u l ti-s ect o r t ransfer.
Options: Auto (Default) / Disabled

PIO Mode

Select the PIO mode.
Options: Auto (Default) / 0 / 1 / 2 / 3 / 4

DMA Mode

Select the DMA mode.
Options: Auto (Default) / Disabled

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P31B-A7 BIOS Manual

S.M.A.R.T

Set the Smart Monitoring, Analysis, and Reporting Technology.
Options: Auto (Default) / Disabled / Enabled

32Bit Data Transfer

Enabl e or disable 32-bit data transfer.
Options: Enabled (Default) / Disabled

Har d Disk Write P r otect

Disable or enable device write protection. This will be effective only if the device
is accessed through BIOS.

Options: Disabled (Default) / Enabled

IDE Detect Time Out (Sec)

Select the time out value for detecting IDE/SAT A devices.
Options: 35 (Default) / 30 / 25 / 20 / 15 / 10 / 5 / 0

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P31B-A7 BIOS Manual

2 Advanced Menu

T he Advanced M enu allows you to configure the settings o f CP U, S uper I/O, P ower
Management, and other system devices.

Notice

z Beware of that setting inappropriate values in items of this menu may cause

system to m alfunction.

Main Advan ced PCIPnP Boot Chipset Performance

WARNING: Settin g wrong values in below sections
may ca use system to malf unction.

> CPU Configura tion

> SuperIO Confi guration
> Hardware Heal th Configuration
> Smart Fan Con figuration

> Power Configu ration
> USB Configura tion

BIOS SETUP UTILITY

Configure CPU.Advanced Settin gs

Exit

Se lect Screen
Se lect Item

Go to Sub Screen

Enter

Ge neral Help

F1

Sa ve and Exit

F10

Exit

ESC

vxx. xx (C)Copyright 1985-200x, American Megatrends, Inc.

CPU Configurati on

T his item shows the CPU information that the BIOS automatically detects.

Advanced

Configure advanced CPU settings

Module Version:xx.xx
Manufacturer:Intel
Frequency :

FSB Speed :
Cache L1 :
Cache L2 :
Ratio Status:
Ratio Actual Value:

C1E Support [E nabled]

Max CPUID Value Limit [D isabled]
Execute-Disable Bit Capability [E nabled]
PECI [D isabled]

Core Multi-Processing [E nabled]
Intel(R) SpeedStep(tm) tech [E nabled]

vxx.xx (C)Copyright 1985-200x, American Megatrends, I nc.

BIOS SETUP UTILITY

7

Options

Disabled
Enabled

Select Screen
Select Item

+-

Change Option

F1

General Help

F10

Save and Exit
Exit

ESC

P31B-A7 BIOS Manual

C1E Support

C1E is “Enhanced Halt State” function, this function helps to save power and
decr ease heat by lowering CPU frequen cy while the processor is not working.
Options: Enabled (Default) / Disabled

M ax CPUI D Val u e Li m i t

When the computer is booted up, the operating system executes the CPUID
instruction to identify the processor and its capabilities. Befo re it can do so, it must

first query the processor to find out the highest input value CPUID recognizes. T his
determines the kind of basic informati on CP UID can provide the operating system.
Options: Disabled (Default) / Enabled

Execute-Disable Bit Capability

T his i tem allows you to confi gure the Execute Disabled Bit function, which protects
your system from buffer over flow attacks.

Options: Enabled (Default) / Disabled

PECI

T his item allows you to control the P ECI function for the processor which supports
Platform Environment Control Interfac e for better therm al management.

Options: Disabled (Default) / Enabled

Core Multi-Processing

T his item allows m ulti-processing function for multi-cor e processors.
Options: Enabled (Default) / Disabled

In tel(R) Speed Step (tm) Tech

This item allows you to enable SpeedStep technology for better power saving.
SpeedStep is a technology built into some Intel processors that allows the clock

sp eed of th e process o r to b e d y nami cal l y chang ed b y s o ftware.
Options: Enabled (Default) / Disabled

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P31B-A7 BIOS Manual

S uper IO Co n f igurati on

Advanced

Configure ITE8712 Super IO Chipse t

Onboard Floppy Controller [Ena bled]

Serial Port1 Address [3F8 /IRQ4]
Parallel Port Address [378 ]
Parallel Port Mode [Nor mal]

Parallel Port IRQ [IRQ 7]
Keyboard PowerOn [Dis abled]
Mouse PowerOn [Dis abled]
Restore on AC Power Loss [Pow er Off]

BIOS SETUP U TILITY

Allows BIOS to Enable
or Disable Floppy

Controller

Select Screen
Select Item
Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

Onboard Floppy Controlle r

Select enabled if your system has a floppy disk controller (FDC) installed on the
system board and you wish to use it. If you install ed another FDC or the system uses
no floppy drive, select disabled in this field.
Options: Enabled (Default) / Disabled

Serial Port1 Address

Select an address and corresponding interrupt fo r the first and second seri al ports.
Options: 3F8/IRQ4 (Default) / 2F8/IRQ3 / 3E8/IR Q4 / 2E8/IRQ3 / Auto / Disabled

Parallel Port Address

Th i s i t em al l ows yo u to det ermine acces s onboard parallel port controller with which
I/O Address.
Options: 378 (Default) / 278 / 3BC / Dis abled

Parallel Port Mode

T his i tem allows you to determine how the parallel port should function.
Options: Normal (Default) Using P arallel port as S tandard Printer Port.

EPP Using P arallel Port as Enhanced Parallel Port.
ECP Using Parallel port as Extended Capabilities Port.
ECP +EPP Using Parallel port as ECP & EPP mode.

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P31B-A7 BIOS Manual

ECP Mode DM A Channel

T his i tem allows you to select parallel port ECP DMA.
Opti ons: DMA3 (Default ) / DMA0 / DMA1

Parallel Port IRQ

T his i tem allows you to select the IRQ for the onboard parallel port.
Options: IRQ7 (Default) / IRQ5 / Disabled

Keyboard Pow erOn

T his i tem allows you to control the keyboard power on function.
Options: Disabled (Default) / Specific Key / Stroke Key

Specific Key Enter

T his i tem will show only when Keyboard PowerOn is set “Specific Key.”

Stroke Keys Selected

T his i tem will show only when Keyboard PowerOn is set “Stroke Key.”
Options: C trl+F1 (Default) / Wake Key / Power Key / Ctrl+F2 / Ctrl+F3 /

C t rl +F 4 / Ctrl + F5 / Ct rl +F 6

Mouse PowerOn

T his i tem allows you to control the m ouse power on function.
Options: Disabled (Default) / Enabled

Restore on AC Powe r Loss

T his s etting specifies how your s ystem should behave a fte r a power fail or interrupts
occurs. By choosing Disabled will leave the computer in the power off state.
Choosing Enabled will restore the system to the status before power failure or
interrupt occurs.

Options: P ower Off (Default) / Power ON / Last State

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P31B-A7 BIOS Manual

Hardware Health C onfiguration

T his i tem shows the system temperature, fan speed, and voltage information.

Advanced

Hardware Health Co nfiguration

H/W Health Functio n [ Enabled]

Shutdown Temperatu re Function[ Disabled]

CPU Temperature

CPU FAN Speed
SYS FAN Speed

CPU Vcore
Chipset Voltage
+3.30V
+5.00V
+12.0V
FSB Voltage

Memory Voltage
5V(SB)

BIOS SETUP UTILITY

Options

Disabled
Enabled

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatre nds, Inc.

H/W Health Function

If with a monitoring system, the system will show PC health status during POST
stage.
Options: Enabled (Default) / Disabled

Shutdown Tem perature Func tion

T his item allows you to set up the CPU shutdown T emperature. This item is only
effective under W indows 98 ACPI mode.

Options: Disabled (De fault) / 60℃/ 140℉ / 6 5 ℃/149℉ / 7 0℃/158℉ / 75℃/167℉

/ 80℃/176℉ / 85℃/185℉ / 90℃/194℉

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P31B-A7 BIOS Manual

Smart Fan Configuration

Advanced

Smart Fan Configur ation

CPU Smart Fan [ Disabled]

Smart Fan Calibrat ion
Control Mode

Fan Ctrl OFF( C)
Fan Ctrl On( C)
Fan Ctrl Start val ue
Fan Ctrl Sensitive

o

o

BIOS SETUP UTILITY

Options

Disabled
Auto

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatre nds, Inc.

CPU S m art Fan

This ite m allo w s you to control the CPU Smar t Fan function.
Options: Disabled (Default) / Auto

Sm art Fan Ca l i bration

Choose this item and then the BIOS will auto test and detect the CP U/System fan
fun ctions and show CPU/S ystem fan speed.

Control M ode

T his item provides several operation modes of the fan.
Options: Quiet / Performan ce / Manual

Fan Ctrl OFF (℃ )

If the CP U/System Temperature is lower than the set value, FAN will turn off.
Options: 0~127 (℃) (W ith the interval of 1℃)

Fan Ctrl On(℃ )

CPU/System fan starts to work under smart fan function when arrive this set value.
Options: 0~127 (℃) (W ith the interval of 1℃)

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P31B-A7 BIOS Manual

Fan Ctrl Start Value

When CPU/System temperature arriv es to the set value, the CPU/System fan will
work under Smart Fan Function mode.

Options: 0~127 (W ith the i nterval of 1)

Fan Ctrl Sensiti ve

Increasi n g t h e v al ue w ill r ai s e t he speed of C PU / Sys t em fan.
Options: 1~127 (W ith the i nterval of 1)

Power Configuration

Advanced

ACPI Settings

Suspend mode [S1(POS)]

ACPI Version Featu res [ACPI v1.0]
ACPI APIC support [Enabled]

AMI OEMB table [Enabled]
Headless mode [Disabled]

Energy Lake Featur e [Disabled]
APIC ACPI SCI IRQ [Disabled]

USB Device Wakeup From S3/S4 [Disabled]
High Performance E vent Timer [Disabled]

Advanced Resume Ev ent Controls

Resume On Ring [D isabled]

Resume On PME# [Disabled]
Resume On RTC Al arm [Disabled]
RTC Alarm Date(D ays)

Time

RTC Alarm

BIOS SETUP UTILITY

Options

S1 (POS)
S3 (STR)

Auto

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

Suspe nd m ode

T he item allows you to select the suspend type under the AC PI operating system.
Opt i ons : S 1 (PO S ) (Default ) P ower on Susp end

S3 (STR) Suspend to RAM
Auto POS+STR

Repost Video on S3 Res ume

T he item allows you to determine whether to invoke VGA BIOS post on S3/ST R
resume.

Options: No (Default) / Yes

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P31B-A7 BIOS Manual

ACPI Version Features

Th e it em all o ws y ou to select t he vers i o n of ACPI.
Options: ACP I v1.0 (Default) / ACP I v2.0 / ACPI v3.0

ACPI AP I C support

This item is used to enable or disable the motherboard's APIC (Advan ced
Programmable Interrupt Controller). The APIC provides multiprocessor support,

more IRQs and faste r interrupt handling.
Options: Enabled (Default) / Disabled

AMI OEMB tabl e

Set this value to allow the ACPI BIOS to add a pointer to an OEMB table in the Root
Syst em Description T able (RSDT ) table.
Options: Enabled (Default) / Disabled

Headless mode

This is a server-specific feature. A headless server is one that operates without a
keyboard, monitor or mouse. To run in headless mode, both BIOS and operating
system (e.g. Windows Server 2003) must support headless operation.

Options: Disabled (Default) / Enabled

Energy Lake Feature

T his i tem allows you control the energy lake feature.
Options: Disabled (Default) / Enabled

APIC ACPI SCI IRQ

Options: Disabled (Default) / Enabled

USB Device Wakeup from S3/S4

T his i tem allows you to enable or disabled the USB resume from S3/S4 function.
Options: Disabled (Default) / Enabled

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P31B-A7 BIOS Manual

High Performance Eve nt Timer

T his i tem allows you to enable or disabled the HPET.
Options: Disabled (Default) / Enabled

HPET Memory Address

T his i tem allows you to set the memory address of HP ET .
Options: FED00000h (Default) / FED01000h / FED02000h / FED03000h

Resume On Rin g

T his i tem allows you control the wake on ring function.
Options: Disabled (Default) / Enabled

Resume On P ME#

W hen you select Enabled, a PME signal from P CI card returns the system to F ull ON
state.
For this function to work, you may need a LAN add-on card which supports the
Wake on LAN function. Set the Wake on LAN (WOL) jumper on motherboard to
enab le if app l icabl e.
Options: Disabled (Default) / Enabled

Resume On RTC Alarm

When “ Enabled”, you can set the date and time at which the RT C (real-time clock)
alar m awakens th e s y s tem from Su s pen d mod e.
Options: Disabled (Default) / Enabled

RTC Alarm Date (D ays)

You can choose which date the system will boot up.

RTC Alarm Time

You can choose the system boot up time, input hour, minute and second t o specify.

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P31B-A7 BIOS Manual

USB Configurati on

T his i tem shows the USB control ler and using USB device information.

Advanced

USB Configuration

Module Version - 2 .24.3-13.4

USB Devices Enable d:

Legacy USB Support [ Enabled]

USB 2.0 Controller Mode [ HiSpeed]
BIOS EHCI Hand-Off [ Enabled]

> USB Mass Storage Device Conf iguration

BIOS SETUP UTILITY

Options

Disabled
Enabled

Auto

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

Legacy USB Support

T his item determines if the BIOS should provide legacy support fo r USB devices
li ke the key board, mouse, and USB drive. Thi s is a useful featu re when using such

USB devices with operating systems that do not natively support USB (e.g.
Micros o ft DOS or Windows NT).

Options: Enabled (Default) / Disabled / Auto

USB 2.0 Controller Mode

T his i tem allows you to select the operation mode of the USB 2. 0 controller.
Options: HiSpeed (De fault) USB 2.0-480Mbps
FullSpeed USB 1.1-12Mbps

BIO S EHCI Hand-Off

This item allows you to enable support for operating systems without an EHCI
hand-o ff feature.

Options: Enabled (Default) / Disabled

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P31B-A7 BIOS Manual

US B Ma ss S t o r age Device C o n f ig urat i on

Advanced

USB Mass Storage Device Configuration

USB Mass Storage Reset Delay [20 Sec]

Device #

Emulation Type [Auto]

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

BIOS SETUP UTILITY

Number of seconds
POST waits for the

USB mass storage
device after start

unit command.

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

USB Mass Storage Reset Delay

T his i tem allows you to set the reset delay for USB mass storage device.
Op t i ons : 20 Sec (D e faul t ) / 1 0 S ec / 30 S ec / 40 S ec

E m ula ti o n T yp e

T his i tem allows you to select the emulation type of t he USB mass storage device.
Options: Auto (Default) / Floppy / Forced FDD / Hard Disk / CDROM

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P31B-A7 BIOS Manual

3 PCIPnP Menu

T his section describes configuring the PCI bus system. PCI, or Personal Computer
Interconnect, is a system which allows I/O devices to operate at speeds nearing the

speed of the CPU itself uses when communicating with its own special components.

Notice

z Beware of that setting inappropriate values in items of this menu may cause

system to m alfunction.

Main Advanced PCIPnP Boot Chipset

Advanced PCI/Pn P Settings
WARNING: Settin g wrong values in below sections

may ca use system to malf unction.

Clear NVRAM [No]

Plug & Play O/S [No]
PCI Latency Tim er [64]
Allocate IRQ to PCI VGA [Yes ]

Palette Snoopin g [Dis abled]
PCI IDE BusMast er [Ena bled]

> PCI Resource
> PCI Express C onfiguration

BIOS SETUP UTILITY

Performance

Clear NVRAM during
System Boot.

Se lect Screen
Se lect Item

Ch ange Option

+-

Ge neral Help

F1

Sa ve and Exit

F10

Exit

ESC

Exit

vxx. xx (C)Copyright 1985-200x, American Megatrends, Inc.

Clear NVR AM

T his i tem allows you to clear the data in the NVRAM (CMOS) by selecting “Yes”.
Options: No (Default) / Yes

Plug & Play OS

When set to YES, BIOS will only initialize the PnP cards used for the boot sequen ce
(VGA, IDE, SCSI). The rest of the cards will be initialized by the PnP operating

system like Window™ 95. When set to NO, BIOS will initialize all the PnP cards.
For non-PnP operating systems (DOS, Netware™), this option must set to NO.

Options: No (Default) / Yes

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P31B-A7 BIOS Manual

PCI Latency Timer

T his i tem controls how long a PCI device can hold the PCI bus be for e another takes
over. The longer the latency, the longer the PCI device can retain control of the bus

before handing it over to another PC I device.
Options: 64 (Default) / 32 / 96 / 128 / 160 / 192 / 224 / 248

Allocate IRQ to P CI VGA

T his i tem allows BIOS to choose a IRQ to assign for the PCI VGA card.
Opti ons: Yes (De fault) / No

Palette Snooping

Som e old graphic controllers need to “snoop” on the VGA palette and then map it to
their di splay as a way to provide boot information and VGA compatibility. This ite m

allows such snoopi ng to take place.
Options: Disabled (Default) / Enabled

PCI IDE Bu sMaster

T his i tem is a toggle for the built-in driver that allows the onbo ard ID E controller to
perform DM A (Di rect Mem o ry Access ) trans fers .

Options: Enabled (Default) / Disabled

PCI R esource

PCIPnP

PCI Resource

IRQ3 [ Available]

IRQ4 [ Available]
IRQ5 [ Available]

IRQ7 [ Available]
IRQ9 [ Available]

IRQ10 [ Available]
IRQ11 [ Available]
IRQ14 [ Available]

IRQ15 [ Available]
DMA Channel 0 [ Available]

DMA Channel 1 [ Available]
DMA Channel 3 [ Available]

DMA Channel 5 [ Available]
DMA Channel 6 [Available]
DMA Channel 7 [ Available]

Reserved Memory Si ze [ Disabled]

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

BIOS SETUP UTILITY

19

Options

Available
Reserved

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

P31B-A7 BIOS Manual

IRQ3/4/5/7/9/1 0/11/14/15

T hese items will allow you to assign each system interrupt a type, depending on the
type of device using the interrupt. T he option “Available” means the IRQ is going
to assign automatically.

Options: Available (De fault) / R eserved

DMA Channel 0/1/3/5/6/7

T hese items will allow you to assign each DMA channel a type, depending on the
type of device using the channel. The option “ Available” means the channel is

going to assign automatically.
Options: Available (De fault) / R eserved

Reser ved M emo ry Siz e

T his item allows B IOS to reserve cert ain memory size for specific PCI device.
Options: Disabled (Default) / 16K / 32K / 64K

PCI Express Configuration

PCIPnP

PCI Express Config uration

Active State Power -Management[ Disabled]

> SB PCIE Ports Co nfiguration

BIOS SETUP UTILITY

Options

Disabled
Enabled

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

Active State Po wer- Manage ment

This item sets the ASPM configuration for the PCI Express devices before the
operating system boots. This function is for OS which does not support ASP M.
Options: Disabled (Default) / Enabled

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P31B-A7 BIOS Manual

SB PCIE Ports Configura tion

PCIPnP

PCIE Ports Configuration
PCIE Port 0 [Aut o]

PCIE Port 1 [Aut o]
PCIE Port 2 [Aut o]
PCIE Port 3 [Aut o]
PCIE Port 4 [Aut o]
PCIE Port 5 [Aut o]
PCIE High Priority Port [Dis abled]

PCIE Port 0 IOxAPIC Enable [Dis abled]
PCIE Port 1 IOxAPIC Enable [Dis abled]
PCIE Port 2 IOxAPIC Enable [Dis abled]
PCIE Port 3 IOxAPIC Enable [Dis abled]
PCIE Port 4 IOxAPIC Enable [Dis abled]
PCIE Port 5 IOxAPIC Enable [Dis abled]

BIOS SETUP U TILITY

Options

Auto
Enabled
Disabled

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

PCIE Port 0/1/2/3/ 4/5

Options: Auto (Default) / Enabled / Disabled

PCIE High Priority Port

Options: Disabled (Default) / Enabled

PCIE Port 0/1/2/3/ 4/5 IOxAPIC En able

Options: Disabled (Default) / Enabled

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P31B-A7 BIOS Manual

4 Boot Menu

T his m enu allows you to setup the system boot options.

Main Advanced PCIPnP Boot Chipset Performance

Boot Settings

> Boot Device Priority

> Hard Disk Drives
> Removable Drives

> CD/DVD Drives
> Boot Settings Configuration

BIOS SETUP U TILITY

Exit

Specifies the
Boot Device

Priority sequence.

Select Screen
Select Item
Go to Sub Screen

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

Boot Device Prio rity

Items in this sub-menu specify the boot device priority sequence from the available
devices. The number of device items that appears on the screen depends on the

number of devi ces instal led in the system.

Hard Disk Drives

T he BIOS will att empt to arrange the hard d isk boot seq uence automatical ly. You
can also ch an ge the b o oti n g s equence. T h e n u mber o f devi ce i t ems t hat ap p ears o n

the screen depends on the number of devices inst alled in the system.

Re mo va ble Dr ives

T he BIOS will att empt to arrange th e removable drive b oot sequence aut omati cally .
You can also change the booting sequence. The number of device items that
appears on the screen depends on the number of devic es installed in the system.

CD/DVD Drives

T he B IOS will attempt to arrange the CD/DVD drive boot sequence automatically.
You can also change the booting sequence. The number of device items that

appears on the screen depends on the number of devic es installed in the system.

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P31B-A7 BIOS Manual

Boot Settings Configuration

BIOS SETUP UTILITY

Boot

Boot Settings Conf iguration

Quick Boot [ Enabled]

AddOn ROM Display Mode [ Force BIOS]
Bootup Num-Lock [ ON]

BOOT SUCCESS BEEP [ Enabled]

Options

Disabled
Enabled

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

Quick Boot

Enabling this option will cause an abridged version of the Power On Self-Test
(POST) to execute after you power up the computer.

Options: Enabled (Default) / Disabled

AddOn ROM Display Mode

T his item sets the display mode for option ROM.
Op t i ons : F orce B IO S (Defaul t) / K eep Cu rren t

Bootup Num-Lock

Selects the NumLock State after the system switched on.
Options: ON (Default) / OFF

BOOT SUCCESS BEEP

W hen this item is set to Enabled, B IOS will let user know boot success with beep.
Options: Enabled (Default) / Disabled

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P31B-A7 BIOS Manual

5 Chipset Menu

Th i s su b m en u all o w s you to co nfig u re t he sp eci fic feat u res of th e chip s et i n s tall ed o n
your system. This chipset manage bus speeds and access to system memory

resources, such as DRAM. It also coordinates communicati ons with t he PCI bus.

Notice

z Beware of that setting inappropriate values in items of this menu may cause

system to m alfunction.

Main Advanced PCIPnP Boot Chips et Performance

Advanced Chipset S ettings
WARNING: Setting w rong values in below sections

may cause system to m alfunction.

> North Bridge Con figuration

> South Bridge Con figuration

BIOS SETUP UTILITY

Exit

Select Screen
Select Item

Go to Sub Scr een

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

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P31B-A7 BIOS Manual

North Br idge Configuration

BIOS SETUP UTILITY

North Bridge Chips et Configura tion

Memory Remap Featu re [Enabled]

PCI MMIO Allocat ion:

Memory Hole [Disabled]
Initiate Graphic A dapter [PEG/PCI]

Internal Graphics Mode Select [Enabled,8MB]

PEG Port Configura tion

PEG Port [Auto]

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

Chipset

Options

Disabled
Enabled

Select Screen
Select Item

Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

M emory Re map Feature

This item allows you to enable or disable the remapping of the overlapped PCI
memory above the total physical memory. Only 64-bit OS supports this function.

Options: Enabled (Default) / Disabled

Memory Hole

You can reserve th is area of system memory for IS A adapter R OM. When this area
is reserved it cannot be cach ed. Ch eck the us er inform ation of periphe rals that need
to u se thi s area o f sys t em m em ory for t h e m em o ry requi rement s.

Options: Disabled (Default) / 15MB – 16MB

Initiate Graphic Adapter

T his i tem allows you to enable or disable VGA cont roll er.
Options: P EG/PCI (Default) / IGD / PCI/IGD / PCI/PEG / PEG/IGD

Internal G raphics Mode Se lec t

This item will be different as your memory modules. When the memory size is
decided, this frame buffer size will also be fixed.

Options: Enabled,8MB (Default) / Enabled,1MB

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P31B-A7 BIOS Manual

PEG Port

T his B IOS feature is a toggle that enables or disabl es the PCI Express port.
Options: Auto (Default) / Disabled

South Br idge C onfi gurat ion

BIOS SETUP U TILITY

South Bridge Chipset Configuratio n

USB Functions [8 USB Ports]

USB 2.0 Controller [E nabled]
Audio Controller [A zalia]

Onboard Lan Control [E nabled]
Onboard Lan Boot ROM [D isabled]

MAC ID Information

SMBUS Controller [E nabled]
SLP_S4# Min. Assertion Width [1 to 2 seconds]

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

Chipset

Options

Disabled
2 USB Ports
4 USB Ports
6 USB Ports

8 USB Ports

Select Screen
Select Item
Change Option

+-

General Help

F1

Save and Exit

F10

Exit

ESC

USB Func tions

T he item determines the number of functional USB port.
Options: 8 USB Ports (Default) / 6 USB Ports / 4 USB Ports / 2 USB Ports /

Disabled

USB 2.0 Controller

T his entry is to enabled/ di sabled EHCI controller only. T hi s Bios itself may/may not
have high speed USB support. If the Bios has high speed USB support built in,the

support will be automately turn on when high speed device were attached.
Options: Enabled (Default) / Disabled

Audio Controller

T his i tem allows you to select the Audio support.
Options: Azalia (D efault) / All Disabled

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P31B-A7 BIOS Manual

Onboard Lan Control

T his i tem allows you to enable or disable the Onboard LAN.
Options: Enabled (Default) / Disabled

Onboard Lan Boot Rom

T his i tem allows you to select the Onboard LAN Boot ROM.
Options: Disabled (Default) / Enabled

MAC ID Information

T his item shows the LAN MAC ID.

SMBUS Controller

T h i s BIO S featu r e c on t rol s the I/ O bu f fe rs fo r th e SM B u s.
Options: Enabled (Default) / Disabled

SLP_S4# Min. Assertion Width

Options: 1 to 2 seconds (Default) / 4 to 5 seconds / 3 to 4 seconds / 2 to 3 seconds

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P31B-A7 BIOS Manual

6 Performance Menu

T his s ubmenu allows you to change voltage and clock of various devices.
(Howev er, we suggest you use the default setting. Changing the voltage and clock

improperly m ay damage the device.)

Notice

z Beware of that setting inappropriate values in items of this menu may cause

system to m alfunction.

Main Advanced PCIPnP Boot Chips et Performance

Advance Performanc e Settings
WARNING: Setting w rong values in below sections

may cause system to m alfunction.

CPU Frequency Sett ing [200]

PCIE Clock By [Auto]

PCIE Frequency Set ting [100]

CPU Voltage [Default]
FSB Voltage [Default]
Chipset Voltage [Default]
Memory Voltage [Default]

DRAM Frequency [Auto]
Configure DRAM Tim ing by SPD [Enabled]
DRAM CAS# Latenc y [5]
DRAM RAS# to CAS # Delay [6 DRAM Clocks]
DRAM RAS# Precha rge [6 DRAM Clocks]

vxx.xx (C)Copyright 198 5-200x, Amer ican Megatrends, Inc.

BIOS SETUP UTILITY

Exit

Select Screen
Select Item

Go to Sub Scr een

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

CPU Frequency Setting

T his i tem allows you to select the CPU Frequency.
Options: 200 (Default) / M in= 100MHz; Max= 800MHz

PCIE Clock By

T his i tem allows you to select the P CIE cl ock control
Options: Auto (Default) / Manual

PCIE Fr e que ncy Se t ti ng

T his i tem allows you to select the P CIE cl ock control
Options: 100 (Default) / M in=100; Max=150

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P31B-A7 BIOS Manual

CPU Voltage

T his i tem allows you to select CPU Voltage Control.
Options: Default (Default) / +10% / +25% / + 35%

FS B Voltage

T his i tem allows you to select FSB Voltage Control.
Options: Default (Default) / +0.1V / +0. 2V / +0.3V

Chipset Voltage

T his i tem allows you to select Chipset Voltage Control.
Options: Default (Default) / +0.1V / +0. 2V / +0.3V

Memory Voltage

T his i tem allows you to select Memory Voltage Control.
Options: Default (Default) / +0.1V / +0. 2V / +0.3V

DRAM Freq uency

T his i tem allows you to control the M emory Clock.
Options: Auto (Default ) / DDR2 533Mhz / DDR2 667Mhz / DDR2 800Mhz

Configure DRAM Timin g by SPD

Options: Enabled (Default) / Disabled

DRAM C AS# Latency

Options: 5 (Default) / 3 / 4 / 6

DR AM R AS# t o CAS # Delay

Options: 6 DRAM Clocks (Default) / 3 DRAM C locks / 4 DRAM C locks /

5 DRAM Clocks

DRAM RAS# Precharge

Options: 6 DRAM Clocks (Default) / 3 DRAM C locks / 4 DRAM C locks /

5 DRAM Clocks

DRA M RAS# Activate to Precharge

Options: 15 DRAM Clocks (Default) / 9 DRAM C locks / 10 DRAM Clocks /

11 DRAM Clocks / 12 DRAM Cl ocks / 13 DRAM C locks /
14 DRAM Clocks

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P31B-A7 BIOS Manual

7 Exit Menu

This menu allows you to load the optimal default settings, and save or discard the
changes to the BIOS items.

Main Advanced PCIPnP Boot Chipset Performance

Exit Options

Save Changes and Exit

Discard Changes and Exit
Discard Changes

Load Optimal Defaults

BIOS SETUP U TILITY

Exit system setup
after saving the

changes.
F10 key can be used

for this operation.

Exit

> Security

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

Select Screen
Select Item
Go to Sub Screen

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

Save Changes and Exit

Save all configuration changes to CMOS R AM and exit setup.

Discard Chang es and Exit

Abandon all changes made during the current session and exit setup.

Discard Chang es

Abandon all changes made during the current session and restore the previously
saved values.

Load Optimal Defaults

This selection allows you to reload the BIOS when problem occurs during system
booting sequence. These configurations are factory settings optimized for this

system .

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P31B-A7 BIOS Manual

Security

T his s ub-menu allows you t o provide/revise supervisor and user password.

BIOS SETUP U TILITY

Exit

Security Settings

Supervisor Password :Not Installe d
User Password :Not Installe d

Change Supervisor Password

User Access Level [Ful l Access]
Change User Password
Clear User Password
Password Check [Set up]

Boot Sector Virus Protection [Dis abled]

vxx.xx (C)Copyright 1985-200x, American Megatrends, Inc.

Install or Change the
password.

Select Screen
Select Item
Change

Enter

General Help

F1

Save and Exit

F10

Exit

ESC

Change Superv isor Password

Setting the supervisor password will prohibit everyone except the supe rvisor from
making changes using the CMOS Setup Utility. You will be prompted with to enter a
password.

User Acess Level

T his item allows supervisor to set the user level.
Op t i ons : F ull A cces s (De faul t) / N o Access / V iew On l y / L imi t ed

Cha nge Us er Password

If the Supervisor Password is not set, then the User Password will function in the
same way as the S upervis or Password. If the Supervisor Password is set and the User
Password is set, the “User” will only be able to view configurations but will not be
abl e to ch an g e t h em .

Cle ar Use r Pa ssword

T his item is for clearing user password.

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P31B-A7 BIOS Manual

P assword Check

T his item is for setting the timing that checking password.
Options: S etup (Default) / Always

Boot Sector V i rus Protection

T his option allows you to choose the VIRUS W arning featur e that is used to protect
the IDE H ard Disk boot sector. If this function is enabled and an attempt is m ade to

write to the boot sector, BIOS will display a warning message on the screen and
sound an alarm beep.

Options: Disabled (Default) / Enabled

32