MSI P4m900m3l Manual

							3-5 BIOS Setup Load Fail-Safe Defaults
Use this menu to load the default values set by the mainboard manufacturer. Load Optimized Defaults
Use this menu to load the default values set by the mainboard manufacturer specifi-
cally for optimal performance of the mainboard. BIOS Setting Password
Use this menu to set the password for BIOS. Save & Exit Setup
Save changes to CMOS and exit setup. Exit Without Saving
Abandon all changes and exit setup.CH3 BIOS Setup.p65  2006/9/15, 下午 02:145 
						

							MS-7255 Mainboard
3-6Standard CMOS FeaturesThe items in Standard CMOS Features Menu includes some basic setup items. Use
the arrow keys to highlight the item and then use the  or  keys to select the
value you want in each item. Date (MM:DD:YY)
This allows you to set the system to the date that you want (usually the current date).
The format is    .
dayDay of the week, from Sun to Sat, determined by BIOS. Read only.
monthThe month from Jan. through Dec.
dateThe date from 1 to 31 can be keyed by numeric function keys.
yearThe year can be adjusted by users. Time (hh:mm:ss)
This allows you to set the system time that you want (usually the current time). The
time format is   . IDE Primary/Secondary/Third/Fourth Master/Slave
Press  or  to select the hard disk drive type. The specification of hard disk
drive will show up on the right hand according to your selection. Press  for
the sub-menu of each item:CH3 BIOS Setup.p65  2006/9/15, 下午 02:146 
						

							3-7 BIOS Setup Type
This item allows you to select how to define the HHD parameters. 32Bit Data Transfer
Enable 32bit to maximize the IDE hard disk data transfer rate. Floppy A
This item allows you to set the type of the floppy drives installed. Halt On
The setting determines whether the system will stop if an error is detected at boot.
Available options are:
[No Errors]The system doesn’t stop for any detected error.
[All, But Keyboard]The system doesn’t stop for a keyboard error.
**System Information**
CPU Type and memory status of your system (read only).CH3 BIOS Setup.p65  2006/9/15, 下午 02:147 
						

							MS-7255 Mainboard
3-8Advanced BIOS Features Quick Boot
Setting the item to [Enabled] allows the system to boot within 5 seconds since it will
skip some check items.
CPU  Configuration
Press  to enter the sub-menu.
**CPU Information**
Manufacturer/Frequency/FSB Speed/Cache L1/Cache L2/Ratio Value
These items show the CPU related information of your system (read only). Ratio CMOS Setting
This setting controls the multiplier that is used to determine the internal clock speed
of the processor relative to the external or motherboard clock speed. It is available
only when the processor supports this function. CPU TM function
The item allows you to specify the CPU speed (at percentage) to which it will slow
down when the CPU reaches the predetermined overheat temperature.CH3 BIOS Setup.p65  2006/9/15, 下午 02:148 
						

							3-9 BIOS Setup Execute Disable Bit
Execute-Disable Bit capability is a robust hardware feature, detectable using the
CPUID instruction, that protects against malicious software executing code on IA-
32 systems. C1E Support
This item allows you to enable/disable the C1E power management feature which
can also drop clock speed and voltage on the processor. Hardware Prefetcher
This item allows you to to enable/disable the hardware prefetcher, or in other
words – hardware prefetch mechanism. Adjacent Cache Line Prefetch
This item allows you to enable/disable the adjacent cache line prefetch mode.
When disabled, only one 64 byte line from the 128 byte sector is prefetched
(which contains the requested data). When enabled – both lines are prefetched
no matter whether they have or have not the requested data. Full Screen LOGO Display
This item enables you to show the company logo on the bootup screen. Settings are:
[Enabled]Shows a still image (logo) on the full screen at boot.
[Disabled]Shows the POST messages at boot. ACPI APIC support
This field is used to enable or disable the APIC (Advanced Programmable Interrupt
Controller). Due to compliance with PC2001 design guide, the system is able to run in
APIC mode. Enabling APIC mode will expand available IRQ resources for the system. Boot Up Num-Lock LED
This setting is to set the Num Lock status when the system is powered on. Setting to
[On] will turn on the Num Lock key when the system is powered on. Setting to [Off]
will allow users to use the arrow keys on the numeric keypad. MPS Configuration
This field allows you to select which MPS (Multi-Processor Specification) version to
be used for the operating system. You need to select the MPS version supported by
your operating system. To find out which version to use, consult the vendor of your
operating system. 1st Boot Device
The original IBM PCs loaded the DOS operating system from drive A (floppy disk), so
IBM PC-compatible systems are designed to search for an operating system first on
drive A, and then on drive C (hard disk). However, modern computers usually load
the operating system from the hard drive, and may even load it from a CD-ROM drive.CH3 BIOS Setup.p65  2006/9/15, 下午 02:149 
						

							MS-7255 Mainboard
3-10Advanced Chipset Setup VGA Frame Buffer Size
The field specifies the size of system memory allocated for video memory. Primary Graphics Adapter
This setting specifies which graphic card is your primary graphics adapter. DRAM Frequency
Use this field to configure the clock frequency of the installed DRAM. DRAM Timing
The value in this field depends on performance parameters of the installed memory
chips (DRAM). Do not change the value from the factory setting unless you install
new memory that has a different performance rating than the original DRAMs. V-Link mode selection
This item lets you choose the speed mode between the North Bridge & South Bridge. V-Link 8X Supported
This item enables or disables the 8X VLink Data Rate. V-Link Date 2X Support
This item enables or disables the VLink Data 2X.Important
Change these settings only if you are familiar with the chipset.CH3 BIOS Setup.p65  2006/9/15, 下午 02:1410 
						

							3-11 BIOS SetupIntegrated Peripherals USB Functions
This setting is used to enable/disable the onboard USB host controller. USB 2.0 Ports Enable
Set to [Enabled] if you need to use any USB 2.0 device in the operating system that
does not support or have any USB 2.0 driver installed, such as DOS and SCO Unix. Legacy USB Support
Set to [Enabled] if you need to use any USB 1.1/2.0 device in the operating system
that does not support or have any USB 1.1/2.0 driver installed, such as DOS and SCO
Unix. Set to [Disabled] only if you want to use any USB device other than the USB
mouse. USB Keyboard Legacy Support
Select Enabled if your system contains a Universal Serial Bus (USB) controller and
you have a USB keyboard. USB Mouse Legacy Support
Select [Enabled] if you need to use a USB-interfaced mouse in the operating system. USB Storage Device Support
Select [Enabled] if you need to use a USB-interfaced keyboard or storage device in
the operating system.
IDE Configuration
Press  to enter the sub-menu: PCI IDE BusMaster
This item allows you to enable/ disable the PCI IDE busmaster.CH3 BIOS Setup.p65  2006/9/15, 下午 02:1411 
						

							MS-7255 Mainboard
3-12 OnBoard PCI IDE Controller
The integrated peripheral controller contains an IDE interface with support for two
IDE channels. Change setting to activate each channel separately or both.
SATA Devices Configuration
Press  to enter the sub-menu: Serial ATA IDE Controller
This feature allows users to enable or disable the RAID function for each SATA
hard disk drive. Serial ATA BIOS Execute
This allows you to enable or disable onchip Serial ATA controller. LAN Controller
This setting allows you to enable/disable the onboard LAN controller. Onboard LAN Option ROM
The item enables or disables the initialization of the onboard LAN Boot ROMs during
bootup. Selecting [Disabled] will speed up the boot process. Audio Controller
This item allows you to enable/ disable the audio controller. Disable the function if you
want to use other controller cards to connect an audio device. OnBoard 1394
This setting is used to enable/disable the onboard IEEE 1394 controller.
I/O Devices Configuration
Press  to enter the sub-menu: Floppy Disk Controller
This is used to enable or disable the onboard Floppy controller. Serial Port1/2 Address
These items specify the base I/O port addresses of the onboard Serial Port 1/2 .
Selecting [Auto] allows BIOS to automatically determine the correct base I/O port
address. Parallel Port Address
There is a built-in parallel port on the on-board Super I/O chipset that provides
Standard, ECP, and EPP features. Parallel Port Mode
[SPP]Standard Parallel Port
[EPP]Enhanced Parallel Port
[ECP]Extended Capability Port
[ECP + EPP]Extended Capability Port + Enhanced Parallel PortCH3 BIOS Setup.p65  2006/9/15, 下午 02:1412 
						

							3-13 BIOS Setup
To operate the onboard parallel port as Standard Parallel Port only, choose [SPP].
To operate the onboard parallel port in the EPP mode simultaneously, choose [EPP].
By choosing [ECP], the onboard parallel port will operate in ECP mode only. Choos-
ing [ECP + EPP] will allow the onboard parallel port to support both the ECP and EPP
modes simultaneously. Parallel Port IRQ
This item allows you to set parallel port IRQ.CH3 BIOS Setup.p65  2006/9/15, 下午 02:1413 
						

							MS-7255 Mainboard
3-14Power Management Features ACPI Function
This item is to activate the ACPI (Advanced Configuration and Power Management
Interface) Function. If your operating system is ACPI-aware, such as Windows 98SE/
2000/ME/XP, select [Enabled]. Settings: [Enabled] and [Disabled]. ACPI Standby
This item specifies 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) fashion 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 maintains all sys-
tem context.
[S3(STR)]The S3 sleep mode is a lower power state where the information
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. Suspend Time Out
If system activity is not detected for the length of time specified in this field, all
devices except CPU will be shut off.Important
S3-related functions described in this section are available only
when your BIOS supports S3 sleep mode.CH3 BIOS Setup.p65  2006/9/15, 下午 02:1414