Biostar U8668 Grand User guide

BIOS Setup
BIOS Setup ................................................................................... 1
Main Menu.................................................................................... 3
Standard CMOS Features..................................................... 5
Standard CMOS Features....................................................... 6
Advanced BIOS Features........................................................ 8
Advanced Chipset Features .................................................11
Integrated Peripherals........................................................... 16
Power Management Setup................................................... 22
PnP/PCI Configurations ....................................................... 28
PC Health Status...................................................................... 31
Frequency/Voltage Control ................................................ 33

BIOS Setup
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BIOS Setup
Introduction
This manual discussed Award™ Setup program built into the ROM BIOS. The Setup
program allows users to modify the basic system configuration. This special information
is then stored in battery-backed RAM so that it retains the Setup information when the
power is turned off.
The Award BIOS™ installed in your computer system’s ROM (Read Only Memory) is
a custom version of an industry standard BIOS. This means that it supports IntelTM
processors input/output system. The BIOS provides critical low-level support for
standard devices such as disk drives and serial and parallel ports.
Adding important has customized the Award BIOS™, but nonstandard, features such as
virus and password protection as well as special support for detailed fine-tuning of the
chipset controlling the entire system.
The rest of this manual is intended to guide you through the process of configuring your
system using Setup.
Plug and Play Support
These AWARD BIOS supports the Plug and Play Version 1.0A specification. ESCD
(Extended System Configuration Data) write is supported.
EPA Green PC Support
This AWARD BIOS supports Version 1.03 of the EPA Green PC specification.
APM Support
These AWARD BIOS supports Version 1.1&1.2 of the Advanced Power Management
(APM) specification. Power management features are implemented via the System
Management Interrupt (SMI). Sleep and Suspend power management modes are
supported. Power to the hard disk drives and video monitors can be managed by this
AWARD BIOS.

BIOS Setup
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PCI Bus Support
This AWARD BIOS also supports Version 2.1 of the Intel PCI (Peripheral Component
Interconnect) local bus specification.
DRAM Support
SDRAM (Synchronous DRAM) are supported.
Supported CPUs
This AWARD BIOS supports the IntelTM CPU.
Using Setup
In general, you use the arrow keys to highlight items, press <Enter> to select, use the
<PgUp> and <PgDn> keys to change entries, press <F1> for help and press <Esc> to
quit. The following table provides more detail about how to navigate in the Setup
program by using the keyboard.
Keystroke Function
Up arrow Move to previous item
Down arrow Move to next item
Left arrow Move to the item on the left (menu bar)
Right arrow Move to the item on the right (menu bar)
Esc Main Menu: Quit without saving changes
Submenus: Exit Current page to the next higher level menu
Move Enter Move to the item you desired
PgUp key Increase the numeric value or make changes
PgDn key Decrease the numeric value or make changes
+ Key Increase the numeric value or make changes
- Key Decrease the numeric value or make changes
F1 key General help on Setup navigation keys
F5 key Load previous values from CMOS
F6 key Load the fail-safe defaults from BIOS default table
F7 key Load the optimized defaults
F10 key Save all the CMOS changes and exit

BIOS Setup
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Main Menu
Once you enter Award BIOS™ CMOS Setup Utility, the Main Menu will appear
on the screen. The Main Menu allows you to select from several setup functions.
Use the arrow keys to select among the items and press <Enter> to accept and
enter the sub-menu.
The information about BIOS defaults on manual is just for reference;
please refer to the BIOS installed on board, for update information.
!"
Figure 1. Main Menu
Standard CMOS Features
This submenu contains industry standard configurable options.
Advanced BIOS Features
This submenu allows you to configure enhanced features of the BIOS.

BIOS Setup
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Advanced Chipset Features
This submenu allows you to configure special chipset features.
Integrated Peripherals
This submenu allows you to configure certain IDE hard drive options and
Programmed Input/ Output features.
Power Management Setup
This submenu allows you to configure the power management features.
PnP/PCI Configurations
This submenu allows you to configure certain “Plug and Play” and PCI options.
PC Health Status
This submenu allows you to monitor the hardware of your system.
Frequency/Voltage Control
This submenu allows you to change CPU clock ratio.
(However, when you try to change different CPU clock ratio, you should check
your CPU frequency in advance. The CPU clock ratio should be changed
depending on your CPU frequency.)
Load Optimized Defaults
This selection allows you to reload the BIOS when the system is having
problems particularly with the boot sequence. These configurations are factory
settings optimized for this system. A confirmation message will be displayed
before defaults are set.
Set Supervisor Password
Setting the supervisor password will prohibit everyone except the supervisor
from making changes using the CMOS Setup Utility. You will be prompted with
to enter a password.

BIOS Setup
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Set User Password
If the Supervisor Password is not set, then the User Password will function in
the same way as the Supervisor 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 able to change them.
Save & Exit Setup
Save all configuration changes to CMOS(memory) and exit setup.
Confirmation message will be displayed before proceeding.
Exit Without Saving
Abandon all changes made during the current session and exit setup.
Confirmation message will be displayed before proceeding.
Update BIOS
This submenu allows you to update bios.

BIOS Setup
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Standard CMOS Features
The items in Standard CMOS Setup Menu are divided into 10 categories. Each
category includes no, one or more than one setup items. Use the arrow keys to
highlight the item and then use the<PgUp> or <PgDn> keys to select the value
you want in each item.
!"
Figure 2. Standard CMOS Setup

BIOS Setup
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Main Menu Selections
This table shows the selections that you can make on the Main Menu.
Item Options Description
Date MM DD YYYY Set the system date. Note that
the ‘Day’ automatically
changes when you set the date.
Time HH MM SS Set the system internal clock.
IDE Primary Master Options are in its sub
menu. Press <Enter> to enter the sub menu of detailed options
IDE Primary Slave Options are in its sub
menu. Press <Enter> to enter the sub menu of detailed options.
IDE Secondary Master Options are in its sub
menu. Press <Enter> to enter the sub menu of detailed options.
IDE Secondary Slave Options are in its sub
menu. Press <Enter> to enter the sub menu of detailed options.
Drive A
Drive B
360K, 5.25 in
1.2M, 5.25 in
720K, 3.5 in
1.44M, 3.5 in
2.88M, 3.5 in
None
Select the type of floppy disk
drive installed in your system.
Video EGA/VGA
CGA 40
CGA 80
MONO
Select the default video device.
Item Options Description
Halt On All Errors
No Errors
All, but Keyboard
All, but Diskette
All, but Disk/ Key
Select the situation in which
you want the BIOS to stop
the POST process and
notify you.
Base Memory N/A Displays the amount of
conventional memory
detected during boot up.
Extended Memory N/A Displays the amount of
extended memory detected
during boot up.
Total Memory N/A Displaysthe total memory
available in the system.

BIOS Setup
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Advanced BIOS Features
!"
Figure 3. Advanced BIOS Setup
Virus Warning
This option allows you to choose the VIRUS Warning feature that is used to
protect the IDE Hard Disk boot sector. If this function is enabled and an attempt
is made to write to the boot sector, BIOS will display a warning message on the
screen and sound an alarm beep.
Disabled (default) Virus protection is disabled.
Enabled Virus protection is activated.
CPU L1 & L2 Cache
Depending on the CPU/chipset in use, you may be able to increase memory
access time with this option.
Enabled (default) Enable cache.
Disabled Disable cache.

BIOS Setup
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CPU L2 Cache ECC Checking
This item allows you to enable/disable CPU L2 Cache ECC Checking.
The Choices: Enabled (default), Disabled.
Quick Power On Self Test
Enabling this option will cause an abridged version of the Power On Self-Test
(POST) to execute after you power up the computer.
Enabled (default) Enable quick POST.
Disabled Normal POST.
First /Second/Third/ Boot Other Device
These BIOS attempts to load the operating system from the devices in the
sequence selected in these items.
The Choices: Floppy, LS120, HDD-0, SCSI, CDROM, HDD-1, HDD-2, HDD-3,
ZIP100, LAN, Enabled, Disabled.
Swap Floppy Drive
For systems with two floppy drives, this option allows you to swap logical drive
assignments.
The Choices: Enabled, Disabled (default).
Boot Up Floppy Seek
Enabling this option will test the floppy drives to determine if they have 40
or 80 tracks. Disabling this option reduces the time it takes to boot-up.
The Choices: Enabled (default), Disabled.
Boot Up NumLock Status
Selects the NumLock. State after power on.
On (default) Numpad is number keys.
Off Numpad is arrow keys.
Typematic Rate Setting
When a key is held down, the keystroke will repeat at a rate determined by the
keyboard controller. When enabled, the typematic rate and typematic delay can
be configured.
Disabled (default)
Enabled
Typematic Rate (Chars/Sec)

BIOS Setup
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Sets the rate at which a keystroke is repeated when you hold the key down.
The Choices: 6 (default), 8,10,12,15,20,24,30.
Typematic Delay (Msec)
Sets the delay time after the key is held down before it begins to repeat the
keystroke.
The Choices: 250 (default), 500,750,1000.
Security Option
This option will enable only individuals with passwords to bring the system
online and/or to use the CMOS Setup Utility.
System A password is required for the system to boot and is also required to
access the Setup Utility.
Setup (default) A password is required to access the Setup Utility only.
This will only apply if passwords are set from the Setup main menu.
OS Select For DRAM > 64MB
A choice other than Non-OS2 is only used for OS2 systems with memory
exceeding 64MB.
The Choices: Non-OS2 (default), OS2.
Video BIOS Shadow
Determines whether video BIOS will be copied to RAM for faster execution.
Enabled (default) Optional ROM is enabled.
Disabled Optional ROM is disabled.

BIOS Setup
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Advanced Chipset Features
This submenu allows you to configure the specific features of the chipset
installed on your system. This chipset manages bus speeds and access to
system memory resources, such as DRAM and external cache. It also
coordinates communications with the PCI bus. The default settings that came
with your system have been optimized and therefore should not be changed
unless you are suspicious that the settings have been changed incorrectly.
!"
Figure 4. Advanced Chipset Setup
DRAM Clock/Drive Control
To control the Clock. If you highlight the literal “Press Enter” next to the “DRAM
Clock” label and then press the enter key, it will take you a submenu with the
following options:
DRAM Clock
This item determines DRAM clock following 100MHz, 133MHz or By
SPD.
The Choices: 100MHz, 133MHz, By SPD (default).

BIOS Setup
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DRAM Timing
This item determines DRAM clock/ timing follow SPD or not.
The Choices: By SPD(default), Manual.
SDRAM CAS Latency
When DRAM is installed, the number of clock cycles of CAS latency
depends on the DRAM timing.
The Choices: 2.5 (default), 2.
Bank Interleave
This item allows you to enable or disable the bank interleave feature.
The Choices: Disabled (default).
Precharge to Active (Trp)
This items allows you to specify the delay from precharge command to
activate command.
The Choices: 2T,3T (default).
Active to Precharge (Tras)
This items allows you to specify the minimum bank active time.
The Choices: 6T (default), 5T.
Active to CMD (Trcd)
Use this item to specify the delay from the activation of a bank to the
time that a read or write command is accepted.
The Choices: 2T,3T (default).
DRAM Burst Len
The Choices: 4 (default), 8.
DRAM Command Rate
This item controls clock cycle that must occur between the last valid
write operation and the next command.
The Choices: 1T Command, 2T Command (default).
AGP & P2P Bridge Control
If you highlight the literal “Press Enter” next to the “AGP & P2P Bridge Control”
label and then press the enter key, it will take you a submenu with the following
options:
AGP Aperture Size
Select the size of the Accelerated Graphics Port (AGP) aperture. The
aperture is a portion of the PCI memory address range dedicated for
graphics memory address space. Host cycles that hit the aperture
range are forwarded to the AGP without any translation.
The Choices: 64M (default), 256M, 128M, 32M, 16M, 8M, 4M.

BIOS Setup
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AGP Mode
This item allows you to select the AGP Mode.
The Choices: 4X (default), 2X, 1X.
AGP Driving Control
By choosing “Auto” the system BIOS will the AGP output Buffer Drive
strength P Ctrl by AGP Card. By choosing “Manual”, it allows user to
set AGP output Buffer Drive strength P Ctrl by manual.
The Choices: Auto (default), Manual.
AGP Driving Value
While AGP driving control item set to “Manual”, it allows user to set
AGP driving.
The Choices: DA (default).
AGP Fast Write
The Choices:
Enabled, Disabled (default).
AGP Master 1 WS Write
When Enabled, writes to the AGP (Accelerated Graphics Port) are
executed with one wait states.
The Choices: Disabled (default), Enabled.
AGP Master 1 WS Read
When Enabled, read to the AGP (Accelerated Graphics Port) are
executed with one wait states.
The Choices: Disabled (default), Enabled.
CPU & PCI Bus Control
If you highlight the literal “Press Enter” next to the “CPU & PCI Bus Control”
label and then press the enter key, it will take you a submenu with the following
options:
CPU to PCI Write Buffer
When enabled, up to four Dwords of data. Can be written to the PCI
bus without interrupting the CPU. When disabled, a write buffer is not
used and the CPU read cycle will not be completed until the PCI bus
signals that it is ready to receive the data.
The Choices: Enabled (default), Disabled.
PCI Master 0 WS Write
When Enabled, writes to the PCI bus are executed with zero-wait
states.
The Choices: Enabled (default), Disabled.

BIOS Setup
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PCI Delay Transaction
The chipset has an embedded 32-bit posted write buffer to support
delay transactions cycles. Select Enabled to support compliance with
PCI specification.
The Choices: Disabled (default), Enabled.
Memory Hole
When enabled, you can reserve an area of system memory for ISA adapter
ROM. When this area is reserved , it cannot be cached. Refer to the user
documentation of the peripheral you are installing for more information.
The Choices: Disabled (default), 15M – 16M.
System BIOS Cacheable
Selecting the “Enabled” option allows caching of the system BIOS ROM at
F0000h-FFFFFh which can improve system performance. However, any
programs writing to this area of memory will cause conflicts and result in system
errors.
The Choices: Enabled, Disabled (default).
Video RAM Cacheable
Enabling this option allows caching of the video RAM, resulting in better system
performance. However, if any program writes to this memory area, a system
error may result.
The Choices: Enabled, Disabled (default).
Delay Prior to Thermal
The time periods would correspond to the amount of time required to boot
various supported configurations. Example selections include 4, 8, 16, 32
minutes. The watchdog timer would generate an SMI, presenting the BIOS an
opportunity to enable the TCC in non-ACPI compliant operating systems.
The Choices: 16Min (default), 4Min, 8Min, 32Min.
VGA Share Memory Size
This item allows you to select the VGA share memory size.
The Choices: 32M (default), 16M, Disabled.

BIOS Setup
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FB Address Conversion
Setting this bit further optimizes the MA table for VGA frame buffer accesses
according to the DRAM page size in use. Setting this should improve VGA
performance especially in tiling address mode. This but cannot be used the
same time as CPU Direct Access FB mode. If used, this bit must be set before
enabling the internal VGA to prevent display corruption.
The Choices: Enabled, Disabled (default).
FB Page Close Prediction
This feature automatically close the FB DRAM pages that are no longer needed
in tiling address mode. This bit can be set / cleared any time. This feature will
show maximum performance increase if frame buffer address conversion is also
enabled.
The Choices: Enabled, Disabled (default).

BIOS Setup
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Integrated Peripherals
!"
Figure 5. Integrated Peripherals
Onboard PCI LAN
This item allows you to enabled or disabled the onboard PCI LAN function.
The Choices: Enabled (default), Disabled.
Onboard Lan Boot ROM
This item allows you to decide whether to invoke the boot ROM of the onboard
LAN chip.
The Choices: Enabled (default), Disabled.

BIOS Setup
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VIA OnChip IDE Device
If you highlight the literal “Press Enter” next to the “VIA OnChip IDE Device”
label and then press the enter key, it will take you a submenu with the following
options:
OnChip IDE Channel 0/1
The motherboard chipset contains a PCI IDE interface with support for
two IDE channels. Select “Enabled” to activate the first and/or second
IDE interface. Select “Disabled” to deactivate an interface if you are
going to install a primary and/or secondary add-in IDE interface.
The Choices: Enabled (default), Disabled.
IDE Prefetch Mode
The “onboard” IDE drive interfaces supports IDE prefetching for faster
drive access. If the interface does not support prefetching. If you
install a primary and/or secondary add-in IDE interface, set this option
to “Disabled”.
The Choices: Enabled (default), Disabled.
Primary / Secondary /Master / Slave PIO
The IDE PIO (Programmed Input / Output) fields let you set a PIO
mode (0-4) for each of the IDE devices that the onboard IDE interface
supports. Modes 0 to 4 will increased performance progressively. In
Auto mode, the system automatically determines the best mode for
each device.
The Choices: Auto (default), Mode0, Mode1, Mode2, Mode3, Mode4.
Primary / Secondary /Master / Slave UDMA
Ultra DMA/100 functionality can be implemented if it is supported by
the IDE hard drives in your system. As well, your operating
environment requires a DMA driver (Windows 95 OSR2 or a third party
IDE bus master driver). If your hard drive and your system software
both support Ultra DMA/100, select Auto to enable BIOS support.
The Choices: Auto (default), Disabled.

BIOS Setup
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VIA OnChip PCI Device
If you highlight the literal “Press Enter” next to the “VIA OnChip PCI Device”
label and then press the enter key, it will take you a submenu with the following
options:
VIA-3058 AC97 Audio
This option allows you to control the onboard AC97 audio.
The Choices: Auto (default), Disabled.
VIA-3068 MC97 Modem
This option allows you to control the onboard MC97 modem.
The Choices: Auto (default), Disabled.
Super IO Device
If you highlight the literal “Press Enter” next to the “Super IO Device” label and
then press the enter key, it will take you a submenu with the following options:
Onboard FDC Controller
Select Enabled if your system has a floppy disk controller (FDC)
installed on the system board and you wish to use it. If install and FDC
or the system has no floppy drive, select Disabled in this field.
The Choices: Enabled (default), Disabled.
Onboard Serial Port 1
Select an address and corresponding interrupt for the first and second
serial ports.
The Choices: Disabled, 3F8/IRQ4 (default), 2F8/IRQ3, 3E8/IRQ4,
2E8/IRQ3, Auto.

BIOS Setup
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Onboard Serial Port 2
Select an address and corresponding interrupt for the first and second
serial ports.
The Choices: Disabled (default), 2F8/IRQ3, 3F8/IRQ4, 3E8/IRQ4,
2E8/IRQ3, Auto.
UART Mode Select
This item allows you to determine which Infra Red (IR) function of
onboard I/O chip.
The Choices: Normal, AS KIR, IrDA (default).
RxD, TxD Active
This item allows you to determine which Infrared (IR) function of
onboard I/O chip.
The Choices: Hi / Lo (default), Hi / Hi, Lo / Hi, Lo / Lo.
IR Transmission Delay
This item allows you to enable/disable IR transmission delay.
The Choices: Enabled (default), Disabled.
UR2 Duplex Mode
Select the value required by the IR device connected to the IR port.
Full-duplex mode permits simultaneous two-direction transmission.
Half-duplex mode permits transmission in one direction only at a time.
The Choices: Half (default), Full.
Use IR Pins
Consult your IR peripheral documentation to select the correct setting
of the TxD and RxD signals.
The Choices: IR-Rx2Tx2 (default), RxD2, TxD2.
Onboard Parallel Port
This item allows you to determine access onboard parallel port
controller with which I/O Address.
The Choices: 378/IRQ7 (default), 278/IRQ5, 3BC/IRQ7, Disabled.