MSI 945gm2 H Manual

							3-12MS-7210 Micro-ATX Mainboard
DRAM RAS# Precharge
This item controls the number of cycles for Row Address Strobe (RAS) to be allowed
to precharge.  If insufficient time is allowed for the RAS to accumulate its charge
before DRAM refresh, refresh may be incomplete and DRAM may fail to retain data.
This item applies only when synchronous DRAM is installed in the system. Setting
options: [6 DRAM Clocks], [5 DRAM Clocks], [4 DRAM Clocks].
DRAM RAS Activate to Prec
This setting determines the time RAS takes to read from and write to a memory cell.
Setting options: [8~15 DRAM Clocks].
Memory Hole
In order to improve performance, certain space in memory can be reserved for ISA
peripherals. This memory must be mapped into the memory space below 16MB. When
this area is reserved, it cannot be cached. Setting options: [Disabled], [15MB-16MB].
Int. Gfx Memory Size Select
The field specifies the size of system memory allocated for video memory.  Setting
options: [Enabled, 1MB], [Enabled, 8MB], [Disabled]. 
						

							3-13 BIOS SetupIntegrated Peripherals
USB Controller
This setting disables/enables theUSB controller. Setting options: [Enabled], [Disabled].
USB Device Legacy Support
Set to Enabled if your 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. Setting options: [Disabled], [Enabled].
Onboard LAN Controller
This setting allows you to enable/disable the onboard LAN controller. Setting options:
[Enabled], [Disabled].
Onboard Lan Option ROM
This item is used to decide whether to invoke the Boot ROM of the Onboard LAN Chip.
Setting options: [Enabled], [Disabled].
Onboard IEEE1394 Controller
This setting allows you to enable/disable the onboard IEEE 1394 controller. Setting
options: [Enabled], [Disabled].
Onboard 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. Setting options:
[Enabled], [Disabled]. 
						

							3-14MS-7210 Micro-ATX Mainboard
On-Chip ATA Device
Press  to enter the sub-menu and the following screen appears:
PCI IDE BusMaster
This item allows you to enable/ disable the PCI IDE busmaster. Setting options:
[Disabled], [Enabled].
ATA/IDE Configuration
This item is used to specify the SATA & IDE devices. The setting options are:
CompatibleYou can use the IDE channels with the SATA devices and
IDE devices.
EnhancedYou can use two IDE devices and all of four SATA devices.
DisabledDisable all IDE and SATA devices.
Legacy IDE Channels
The item will appear when you select “Compatible” mode in the ATA/IDE
Configuration item. You can use the two IDE channels with SATA devices and
IDE devices by your desire. And each channel supports up to 2 devices. Please
refer the table below for detail setting:
Configure SATA as
The item will appear when you select Enhanced mode in the “ATA/IDE Configu-
ration” item. You can set the SATA mode in this item. Setting options are:
RAIDconfigure the SATA devices as RAID mode
AHCI IDEconfigure the SATA devices as AHCI IDE modeSetting optionsAvailable devices
SATA OnlySATA1/2/3/4 devices only
PATA Pri, SATA SecIDE1/2 by IDE channel 1 & SATA1/2 by IDE
channel 2
SATA Pri, PATA SecSATA1/2 by IDE channel1 & IDE1/2 by IDE
channel 2
PATA OnlyIDE devices only 
						

							3-15 BIOS SetupI/O Devices Configuration
Press  to enter the sub-menu and the following screen appears:
OnBoard Floppy Controller
This item allows you to enable/ disable the floppy controller. Setting options:
[Disabled], [Enabled].
COM Port 1/ 2
Select an address and corresponding interrupt for Serial Port 1/ 2. Setting options:
[3F8/IRQ4], [2E8/IRQ3], [3E8/IRQ4], [2F8/IRQ3], [Disabled].
Parallel Port
This specifies the I/O port address and IRQ of the onboard parallel port. Setting
options: [378/IRQ7], [278/IRQ5], [3BC/IRQ7], [Disabled].
Parallel Port Mode
[EPP]Enhanced Parallel Port
[ECP]Extended Capability Port
[ECP + EPP]Extended Capability Port + Enhanced Parallel Port
[Normal]
[Bi-Directional]
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.
Choosing [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. Setting options: [IRQ5], [IRQ7]. 
						

							3-16MS-7210 Micro-ATX MainboardPower Management Setup
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, select [Enabled]. Setting options: [Yes] and [No].
ACPI Standby State
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 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.
AutoThe system will auto detect the state.MSI Reminds You...
S3-related functions described in this section are available only
when your BIOS supports S3 sleep mode. 
						

							3-17 BIOS SetupRe-Call VGA BIOS from S3
When ACPI Standby State is set to [S3/STR], users can select the options in this
field. Selecting [Enabled] allows BIOS to call VGABIOS to initialize the VGA card
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.  Setting options: [Enabled], [Disabled].
Suspend Time Out (Minute)
If system activity is not detected for the length of time specified in this field, all
devices except CPU will be shut off. Settings: [Disabled], [1], [2], [4], [8], [10], [20],
[30], [40], [50], [60].
Power Button Function
This feature allows users to configure the Power Button function. Settings are:
[On/ Off]The power button functions as a normal power-on/-off
button.
[Suspend]When 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.
Restore on AC Power Loss
This setting specifies whether your system will reboot after a power failure or
interrupt occurs. Available settings are:
[Power Off]Leaves the computer in the power off state.
[Power On]Leaves the computer in the power on state.
[Last State]Restores the system to the previous status before power
failure or interrupt occurred.
Wakeup Event Setup
Press  to enter sub-menu and the following screen appears.
Resume By PS/2 Keyboard
The item specifies how the system will be awakened from power saving mode
when input signal of the PS2 keyboard is detected. Use the  &
 keys to select the options. When selecting [Password], enter the
desired password. Setting options: [Disabled], [Password], [Hot Key]. 
						

							3-18MS-7210 Micro-ATX Mainboard
Resume By PS/2 Mouse
This setting only works Resume By PS/2 KB is set to [Hot Key]. This setting
determines whether the system will be awakened from what power saving
modes when input signal of the PS/2 mouse is detected. Setting options: [Disabled],
[Enabled].
Resume By LAN
This setting determines whether the system will be awakened from what power
saving modes when input signal of the LAN device is detected. Setting options:
[Disabled], [Enabled].
Resume by PCI Device (PME#)
When setting to [Enabled], this setting allows your system to be awakened from
the power saving modes through any event on PME (Power Management Event).
Setting options: [Disabled], [Enabled].
Resume by RTC Alarm
This is used to enable or disable the feature of booting up the system on a
scheduled time/date from the S3, S4, and S5 state. Setting options: [Disabled],
[Enabled]. 
						

							3-19 BIOS SetupPNP/PCI Configurations
This section describes configuring the PCI bus system and PnP (Plug & Play)
feature. PCI, or Peripheral Component Interconnect, is a system which allows I/O
devices to operate at speeds nearing the speed the CPU itself uses when communi-
cating 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.
Primary Graphics Adapter
This setting specifies which VGA card is your primary graphics adapter. Setting
options:
[PEG/PCI]The system initializes the installed PCI Express graphics card first. If
an PCI Express graphics card is not available, it will initialize the PCI
VGA card.
[PEG/IGD]The system initializes the installed PCI Express graphics card first. If
an PCI Express graphics card is not available, it will initialize the
onboard VGA port.
[PCI/PEG]The system initializes the installed PCI VGA card first.  If a PCI VGA
card is not available, it will initialize the PCI Express graphics card.
[PCI/IGD]The system initializes the installed PCI VGA card first.  If a PCI VGA
card is not available, it will initialize the onboard VGA port.
[IGD]Only onboard VGA port availabled. 
						

							3-20MS-7210 Micro-ATX Mainboard
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 transactions for a
longer time and thus improve the effective PCI bandwidth. For better PCI performance,
you should set the item to higher values. Setting options: [32], [64], [96], [128], [160],
[192], [224], [248].
PCI slot 1/2 IRQ
This item specifies the IRQ line for each PCI slot.
IRQ Resource Setup
Press  to enter the sub-menu and the following screen appears.
IRQ 3/4/5/7/9/10/11/14/15
These items specify the bus where the specified IRQ line is used.
The settings determine if AMIBIOS should remove an IRQ from the pool of avail-
able IRQs passed to devices that are configurable by the system BIOS. The
available IRQ pool is determined by reading the ESCD NVRAM. If more IRQs must
be removed from the IRQ pool, the end user can use these settings to reserve
the IRQ by assigning an [Reserved] setting to it. Onboard I/O is configured by
AMIBIOS. All IRQs used by onboard I/O are configured as [Available]. If all IRQs
are set to [Reserved], and IRQ 14/15 are allocated to the onboard PCI IDE, IRQ 9
will still be available for PCI and PnP devices. Available settings: [Reserved] and
[Available].MSI Reminds You...
IRQ (Interrupt Request) lines are system resources allocated to I/O
devices. When an I/O device needs to gain attention of the operating
system, it signals this by causing an IRQ to occur. After receiving the
signal, when the operating system is ready, the system will interrupt
itself and perform the service required by the I/O device. 
						

							3-21 BIOS SetupDMA Resource Setup
Press  to enter the sub-menu and the following screen appears.
DMA Channel  0/1/3/5/6/7
These items specify the bus that the system DMA (Direct Memory Access)
channel is using.
The settings determine if AMIBIOS should remove a DMA from the available
DMAs passed to devices that are configurable by the system BIOS. The avail-
able DMA pool is determined by reading the ESCD NVRAM. If more DMAs must be
removed from the pool, the end user can reserve the DMA.