MSI Kt4avl Manual

							3-15
BIOS Setup
Disable the function if 16MB SDRAM is installed.  Settings: Disabled,
2-Way and 4-Way.
DDR400 tWRT Timing
This controls the timing delay (in clock cycles) before DDR400 starts a
write command after receiving it.  Settings: 1T, 2T, 3T.    3T increases
the delay time while 1T provides the least timing delay.   This option is
effective only if DDR400 is running.
SDRAM Burst Length
This setting allows you to set the size of Burst-Length for DRAM.  Burst-
ing feature is a technique that DRAM itself predicts the address of the
next memory location to be accessed after the first address is accessed.
To use the feature, you need to define the burst length, which is the ac-
tual length of burst plus the starting address and allows internal address
counter to properly generate the next memory location.  The bigger the
size, the faster the DRAM performance.  Settings: 4 QW, 8 QW.
SDRAM 1T Command
This setting controls the SDRAM command rate.  Selecting Enabled al-
lows SDRAM signal controller to run at 1T (T=clock cycles) rate.  Se-
lecting Disabled makes SDRAM signal controller run at 2T rate.  1T is
faster than 2T.  Setting options: Disabled, Enabled.
Fast Command
This item controls the internal timing of CPU.  Selecting Ultra allows
CPU to handle data/instructions at the fastest speed.  Fast enables CPU
to handle at a faster speed, while Normal let CPU handle them at the
slowest rate.
Fast R-2-R Turnaround
Burst read operation can be interrupted by new read of any bank.
Random column access is allowed. READ to READ interval is mini-
mum 1 CLK. Selecting Enabled to shorten the turnaround interval to
improve the performance. Setting options: Disabled, Enabled. 
						

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 MS-6712 ATX Mainboard
AGP Timing Control
Press  and the following sub-menu appears.
AGP Mode
The item sets an appropriate mode for the installed AGP card.  Set-
ting options: 1x, 2x, 4x, Auto.  Select 4x only if your AGP card sup-
ports it.
AGP Fast Write
This option enables or disables the AGP Fast Write feature. The Fast
Write technology allows the CPU to write directly to the graphics
card without passing anything through the system memory and im-
proves the AGP 4X speed. Select Enabled only when the installed
AGP card supports this function. Settings: Enabled, Disabled.
AGP Aperture Size
This setting controls just how much system RAM can be allocated to
AGP for video purposes.  The aperture is a portion of the PCI memory
address range dedicated to graphics memory address space.  Host cycles
that hit the aperture range are forwarded to the AGP without any
translation.  The option allows the selection of an aperture size of
4MB, 8MB, 16MB, 32MB, 64MB, 128MB, and 256 MB.
AGP Master 1 W/S Write
The field allows users to insert one wait state into the AGP write cycle.
Settings: Enabled, Disabled.
AGP Master 1 W/S Read
The field allows users to insert one wait state into the AGP read cycle.
Settings: Enabled, Disabled.
AGP Read Synchronization
The field allows you to enable or disable the AGP Read Synchroniza-
tion feature.  Settings: Enabled, Disabled. 
						

							3-17
BIOS Setup
PCI Delay Transaction
The chipset has an embedded 32-bit posted write buffer to support delayed
transactions cycles so that transactions to and from the ISA bus are buffered
and PCI bus can perform other transactions while the ISA transaction is
underway.  Select Enabled to support compliance with PCI specification ver-
sion 2.1.  Setting options: Enabled, Disabled. 
						

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 MS-6712 ATX Mainboard
Power Management Features
ACPI Standby State
This item secifies the power saving modes for ACPI function. If your operating
system supports ACPI, such as Windows 98SE, Windows ME and Windows
2000, you can choose to enter the Standby mode in S1(POS) or S3(STR) fash-
ion through the setting of this field. Options are:
S1/POS        The S1 sleep mode is a low power state.  In this state, no
system context is lost (CPU or chipset) and hardware main-
tains all system context.
S3/STR       The S3 sleep mode is a lower power state where the in
formation of system configuration and open applications/
files is saved to main memory that remains powered while
most other hardware components turn off to save energy.
The information stored in memory will be used to restore
the system when a “wake up” event occurs.
Auto         BIOS determines the best ode automatically.
Call VGA BIOS at S3 Resuming
Selecting Enabled allows BIOS to call VGA BIOS to initialize the VGA card
MSI Reminds You...
S3-related functions described in this section are available only
when your BIOS supports S3 sleep mode. 
						

							3-19
BIOS Setup
when system wakes up (resumes) from S3 sleep state. The system resume time
is shortened when you disable the function, but system will need an AGP
driver to initialize the VGA card. Therefore, if the AGP driver of the card does
not support the initialization feature, the display may work abnormally or not
function after resuming from S3.
USB Wakeup From S3
This item allows the activity of the USB device to wake up the system from
S3 (Suspend to RAM) sleep state. Settings: Enabled, Disabled.
Power Management/APM
Setting to Enabled will activate an Advanced Power Management (APM)
device to enhance Max Saving mode and stop CPU internal clock. Settings:
Disabled, Enabled.
Power/Sleep LED
This item configures how the system uses power LED on the case to indicate
the sleep/suspend state. Available options are:
Single LEDThe power LED turns off to indicate the sleep/suspend
state.
Dual LEDThe power LED changes its color to indicate the sleep/
suspend state.
Suspend Time Out (Minute)
After the selected period of system inactivity, all devices except the CPU shut
off. Settings: Disabled, 1, 2, 4, 8, 10, 20, 30, 40, 50, 60.
Display Activity
These items specify if the BIOS will monitor the activity of the specified
hardware peripheral or component. If set to Monitor, any activity detected on
the specified hardware peripheral or component will wake up the system or
prevent the system from entering the power saving modes. Settings: Monitor,
Ignore.
CPU Critical Temperature
If the CPU temperature reaches the upper limit preset in this setting, the warn-
ing mechanism will be activated. This helps you to prevent the CPU overheat-
ing problem. 
						

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 MS-6712 ATX Mainboard
CPU HALT Command Detection
This item allows your OS to determine whether the CPU will enter the HALT
command state.  Options: Enabled, Disabled.
Power Button Function
This feature sets the function of the power button. Settings are:
On/OffThe power button functions as normal  power off button.
SuspendWhen you press the power button, the computer enters
the suspend/sleep mode, but if the button is pressed for
more than four seconds, the computer is turned off.
After AC Power Loss
This setting specifies whether your system will reboot after a power failure or
interrupt occurs. Available settings are:
Power OffLeaves the computer in the power off state.
Power OnLeaves the computer in the power on state.
Last StateRestores the system to the previous status before power
failure or interrupt occurred.
Set WakeUp Events
Press  and the following sub-menu appears.
Wake Up On Ring
For this feature to take effect, you need to install a modem card support-
ing power on function first.  When set to Enabled, activity or input signal
of the modem will awake the system from S3 (Suspend to RAM) sleep
state.  Settings: Disabled, Enabled.
Wake Up On PME
When set to Enabled, the feature allows your system to be awakened
from the power saving modes through any event on PME (Power Man- 
						

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BIOS Setup
agement Event).  Settings: Enabled, Disabled.
Resume On KBC
This item allows the activity of the keyboard to wake up the system from
S3 (Suspend to RAM) sleep state.  Settings: Disabled, Any Key, Spe-
cific Key.
Wake-Up Key
This setting allows users to set a wake-up key to recall the system
from power saving state.  Options: Any Key, Specific Key.
Wake-Up Password
This setting allows users to set a password (max. 5 letters) to wake
up the system.
Resume On PS/2 Mouse
This item allows the activity of the mouse to wake up the system from
S3 (Suspend to RAM) sleep state.  Settings: Disabled, (double-click)
Left-button, (double-click) Right-button.
Resume By Alarm
This is used to enable or disable the feature of booting up the system on
a scheduled time/date from the soft off (S5) state. Settings: Enabled,
Disabled.
Alarm Date/Hour/Minute/Second
If Resume By Alarm is set to Enabled, the system will automatically
resume (boot up) on a specific date/hour/minute/second specified in
these fields. Available settings for each item are:
Alarm Date01 ~ 31, Every Day
Alarm Hour00 ~ 23
Alarm Minute00 ~ 59
Alarm Second00 ~ 59
MSI Reminds You...
If you have changed this setting, you must let the system boot up
until it enters the operating system, before this function will work. 
						

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 MS-6712 ATX Mainboard
PNP/PCI Configurations
This section describes configuring the PCI bus system and PnP (Plug & Play)
feature.  PCI, or Peripheral Component Interconnect, is a system which al-
lows I/O devices to operate at speeds nearing the speed the CPU itself uses
when communicating with its special components.  This section covers some
very technical items and it is strongly recommended that only experienced
users should make any changes to the default settings.
Plug and Play Aware O/S
When set to Yes, BIOS will only initialize the PnP cards used for booting
(VGA, IDE, SCSI). The rest of the cards will be initialized by the PnP operat-
ing system like Windows
® 98, 2000 or ME. When set to No, BIOS will initial-
ize all the PnP cards. Select Yes if the operating system is Plug & Play.
Clear NVRAM
The ESCD (Extended System Configuration Data) NVRAM (Non-volatile
Random Access Memory) is where the BIOS stores resource information for
both PNP and non-PNP devices in a bit string format. When the item is set to
Yes, the system will reset ESCD NVRAM right after the system is booted up
and then set the setting of the item back to No automatically. 
						

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BIOS Setup
PCI Latency Timer
This item controls how long each PCI device can hold the bus before another
takes over. When set to higher values, every PCI device can conduct transac-
tions for a longer time and thus improve the effective PCI bandwidth. For
better PCI performance, you should set the item to higher values. Settings
range from 32 to 248 at a 32 increment.
PCI IDE BusMaster
Set this option to Enabled to specify that the IDE controller on the PCI local
bus has bus mastering capability. Settings options: Disabled, Enabled.
Primary Graphics Adaptor
This setting specifies which VGA card is your primary graphics adapter. Set-
ting options: PCI, AGP.
PCI Slot1 IRQ, PCI Slot2/5 IRQ, PCI Slot3/6 IRQ, PCI Slot4 IRQ
These items specify the IRQ line for each PCI slot. Setting options: 3, 4, 5, 7,
9, 10, 11, Auto. Selecting Auto allows BIOS to automatically determine the
IRQ line for each PCI slot. 
						

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 MS-6712 ATX Mainboard
Integrated Peripherals
Floppy Disk Controller
This is used to enable or disable the onboard Floppy controller.
Serial Port 1/2
These items specify the base I/O port addresses of the onboard Serial Port 1
(COM A)/Serial Port 2 (COM B).  Selecting Auto allows AMIBIOS to auto-
matically determine the correct base I/O port address.  Settings: Auto, 3F8/
COM1, 2F8/COM2, 3E8/COM3, 2E8/COM4 and Disabled.
Serial Port2 Mode
This item sets the operation mode for Serial Port 2.  Settings: Normal,
1.6 uS, 3/16 Baud and ASKIR (the last three operation modes are setting
options for IR function). Option Description
Auto BIOS will automatically determine whether to enable the
onboard Floppy controller or not.
Enabled Enables the onboard Floppy controller.
Disabled Disables the onboard Floppy controller.