Abit BF6 User Manual

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Introduction of the BIOS

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Video Off Method:

Three video off methods are available: "Blank Screen", "V/H SYNC + Blank" and "DPMS". The default is " V/H SYNC + Blank ".

If this setting does not shut off the screen, select “Blank Screen”. If your monitor and video card support DMPS standard, select “DPMS”.

Blank Screen: This option only writes blanks to the video buffer.

V/H SYNC + Blank: This selection will cause the system to turn off the vertical and horizontal synchronization ports and write blanks to the video buffer.

DPMS: Initial display power management signaling.

Video Off After:

Select the saving mode in which the video is switched off.

NA

The video will never be switched off in no power saving mode.

Suspend

The video will only be switched off in Suspend mode.

Standby

The video will only be switched off in Standby or Suspend mode.

Doze

The video will be switched off in all power saving modes.

Modem Use IRQ:

You can specify the IRQ for modem use. Eight options are available: N/A , 3, 4, 5, 7, 9, 10, 11. The default setting isN/A.

Doze Mode:

When the setting selected for "Power Management" is "User Define", you can define for this mode any delay from 1 minute to 1 hour. If no power management event occurs during this time period, meaning that the computer is inactive during this period, the system will enter the Doze power saving mode. If this mode is disabled, the system will enter the next mode in the sequence (Standby or Suspend mode).

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Standby Mode:

When the setting selected for "Power Management" is "User Define", you can define for this mode any delay from 1 minute to 1 hour. If no power management event occurs during this time period, meaning the computer is inactive during this period, the system will enter the Standby power saving mode.

If this mode is disabled, the system will enter the next mode in the sequence (Suspend mode).

Suspend Mode:

When the setting selected for "Power Management" is "User Define", you can define for this mode any delay from 1 minute to 1 hour. If no power management event occurs during this time period, meaning the computer is inactive during this period, the system will enter the Suspend power saving mode. The CPU stops working completely.

If this mode is disabled, the system will not enter the Suspend mode.

HDD Power Down:

If the system has not accessed data on the hard disk drive during the specified time period, the engine of the HDD will stop in order to save electricity. You can set 1 to 15 minutes or select Disable according to your use of the HDD.

Throttle Duty Cycle:

This is used to specify the CPU speed in power saving mode. Six options are available: 12.5%, 25.0%, 37.5%, 50.0%, 62.5% or 75.0%.

Soft-OffbyPWR-BTTN:

Two options are available: Instant-Offand Delay 4 Sec.. The default setting isInstant-Off.Pressing the power button for more than four seconds forces the system to enter theSoft-Offstate when the system has "hung".

Power On by Ring:

Two options are available: Enabled and Disabled. Default setting is Disabled. If you connect an external modem to the onboard serial port, the system will be turned on when a telephonering-upoccurs.

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Resume by Alarm:

Two options are available: Enabled and Disabled. Default setting is Disabled. The RTC alarm can turn on the system. You can set Date (of month) and Time (hour, minute, and second) when you set this item toEnabled.

Resume by LAN:

Two options are available: Enabled and Disabled. When select Enabled, an input signal from a local area network (LAN) awakens the system from a soft off state.

PM Timer Events:

When one of the specified events occur, the count down made for entry in power saving mode goes back to zero. Since the computer will enter a power saving mode only after an inactivity delay specified (time specific for Doze, Standby and Suspend modes) and after it has no activity, during this time period, any event will cause the computer to re-countthe time elapsed. Resume events are operations or signals that cause the computer to resume time counting.

IRQ [3-7,9-15],NMI:

If any IRQ or NMI (Non-MaskInterrupt) activities occur, this will cause the computer tore-countthe time elapsed.

VGA Active Monitor:

If there is any VGA data transfer or any I/O activities, this will cause the computer to re-countthe time elapsed.

IRQ8 Break Suspend:

Supports the RTC alarm wake up from suspend function (via IRQ8).

IDE Primary Master:

If any IDE primary master I/O activity occurs, it will cause the computer to re-countthe time elapsed.

IDE Primary Slave:

If any IDE primary slave I/O activity occurs, it will cause the computer to re-countthe time elapsed.

IDE Secondary Master:

If any IDE secondary master I/O activity occurs, it will cause the computer to re-countthe time elapsed.

IDE Secondary Slave:

If any IDE secondary slave I/O activity occurs, it will cause the computer to re-countthe time elapsed.

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Floppy Disk:

If any floppy disk I/O activity occurs, it will cause the computer to re-countthe time elapsed.

Serial Port:

If any serial port I/O activity occurs, it will cause the computer to re-countthe time elapsed.

Parallel Port:

If any Parallel port I/O activity occurs, it will cause the computer to re-countthe time elapsed.

Mouse Break Suspend:

Four options are available: Yes,No (COM1),No (COM2),No (PS/2),Back to Yes.

CPU FAN Off In Suspend

Two options are available: Enabled and Disabled. When select Enabled the CPU fan turns off during Suspend mode

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3-7.PnP/PCI Configurations

This section describes configuring the PCI bus system. PCI, or PersonalComputerInterconnect, is a system which allows I/O devices to operate at speeds nearing the speed the CPU itself uses when communicating with its own 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.

Figure 3-9.PnP/PCI Configurations Setup Screen Shot

PNP OS Installed:

The device resource assigned by PnP OS (e.g., Windows 95) or BIOS.

Force Update ESCD

Two options are available: Enabled and Disabled. Default setting is Disabled. Normally, you leave this fieldDisabled. SelectEnabled to reset Extended System Configuration Data (ESCD) when you exit Setup if you have installed a newadd-oncard and the system reconfiguration has caused a resource conflict that the operating system can not boot.

Resources Controlled By:

Two options are available: Auto(ESCD) and Manual. Default setting is Auto(ESCD). When the setting is Auto(ESCD), theIRQ Resources andMemory Resources can not be changed

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manually. When resources are controlled manually, the IRQ Resources DMA Resources andMemory Resources can then be changed.

Computer Knowledge: ESCD (Extended System Configuration Data)

The ESCD contains the IRQ, DMA, I/O port, memory information of the system. This is a specification and a feature specific to the Plug & Play BIOS.

Legacy ISA devices compliant with the original PC AT bus specification, requiring a specific interrupt (such as IRQ4 for serial port 1).

PCI/ISA PnP devices compliant with the Plug and Play standard, whether designed for the PCI or ISA bus architecture.

The Award Plug and Play BIOS has the capability to automatically configure all of the boot and PnP compatible devices. If you select Auto (ESCD), The IRQ, DMA and Memory Resources items will be disabled, as the BIOS automatically assigns them. But if you have trouble in assigning the interrupt resources automatically, you can selectManual to set which IRQ and DMA are assigned to PCI/ISA PnP or legacy ISA cards.

+IRQ Resources

When resources are controlled manually, assign each system interrupt a type, depending on the type of device using the interrupt.

Figure 3-10.PnP/PCI Configurations - IRQ Resources Setup Screen Shot

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+ DMA Resources

 

When resources are controlled manually, assign

each system DMA channel a type,

depending on the type of device using the DMA channel.

Figure 3-11.PnP/PCI Configurations - DMA Resources Setup Screen Shot

+ Memory Resources

This sub menu can let you control the memory resource.

Figure 3-12.PnP/PCI Configurations - Memory Resources Setup Screen Shot

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Reserved Memory Base

Reserved a low memory for the legacy device (non-PnPdevice). Seven options are available: N/A, C800, CC00, D000, D400, D800 and DC00.

Reserved Memory Length

Reserved a low memory length for the legacy device (non-PnPdevice). Four options are available: 8K, 16K, 32K and 64K.

PCI /VGA Palette Snoop:

This option allows the BIOS to preview VGA Status, and to modify the information delivered from the Feature Connector of the VGA card to the MPEG Card. This option can solve the display inversion to black after you have used the MPEG card.

Assign IRQ For VGA :

You can assign an IRQ for the PCI VGA or Disabled.

Assign IRQ For USB

You can select enabled if your system has a USB controller and you have one or more USB devices connected. If you are not using your system USB controller, you can select Disabled to free the IRQ resource.

PIRQ_0~3 Use IRQ No.

Eleven options are available: Auto, 3, 4, 5, 7, 9, 10, 11, 12, 14, 15. Default setting is Auto. This item allows the system to automatically specify the IRQ number for the device installed on PCI slots. Which means, the system can specify the fixed IRQ number for the device installed on the PCI slots (PCI slot 1 to PCI slot 6). This is a useful function when you want to fix the IRQ for a specific device.

For example, if you want to move your hard disk to another computer and don’t want to re-installWindows® NT, then you can specify the IRQ for the device installed on the new computer to fit the original computer settings.

Note

If you specify the IRQ in this item, then you cannot specify the same IRQ to the ISA bus, otherwise, it will cause a hardware conflict.

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This feature is for the operating system which will record and fix the PCI configuration status, if you want to change it.

For the relations between the hardware layout of PIRQ (the signals from the PIIX4 chipset), INT# (means PCI slot IRQ signals) and devices, please refer to the table below:

Signals

PCI slot 1

PCI slot 2

PCI slot 3

PCI slot 4

PCI slot 5

PCI Slot 6

 

AGP Slot

 

 

 

 

 

PIRQ_0

INT A

INT B

INT C

INT D

INT B

INT C

PIRQ_1

INT B

INT D

INT D

INT A

INT A

INT D

PIRQ_2

INT C

INT C

INT A

INT B

INT D

INT A

PIRQ_3

INT D

INT A

INT B

INT C

INT C

INT B

!Each PCI slot has four INT#s (INT A~INT D), and the AGP slot has two INT# (INTA and INTB).

!USB used PIRQ_3.

Note

!PCI slot 1 shares IRQ signals with the AGP slot.

!PCI slot 2 shares IRQ signals with the PCI slot 5

!PCI slot 3 shares IRQ signals with the PCI slot 6.

!PCI slot 4 shares IRQ signals with the USB controller.

!If you want to install two PCI cards into those PCI slots that share IRQ each other at the same time, you have to make sure your OS and PCI devices’ driver support IRQ sharing.

!PCI slot 6 is fully bus slave. Thus you can’t install a PCI card that needs to use bus master signals into PCI slot 6. But you can install voodoo 1 or 2 that doesn’t need to use bus aster signals into PCI slot 6.

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3-8.PC Health Status

You can set the warning and shutdown temperatures for your computer system, and you can check the fan speeds and power supply voltages of your computer system. The features are useful for monitoring all the important parameters within your computer system. We call it the PC Health Status.

Figure 3-13.PC Health Status Screen Shot

Shutdown Temperature

This item lets you select the limit for the system shutdown temperature. If the temperature extends beyond the limit, the system will shut down. The default setting is 75° C / 167° F.

CPU Warning Temperature:

This item lets you select the temperature at which you want the system to send out a warning message to the PC speakers of when the temperature goes beyond either limit. You can select the temperatures you want. The ranges are from 30° C / 86° F to120° C / 248° F, default setting is70° C / 158° F.

All Voltages, Fans Speed and Thermal Monitoring:

These items list the current states of the CPU and environment temperatures as well as fan speeds (CPU fan and chassis fan). It can not be changed by the user.

The following items list the voltage states of the system power. It is also unchangeable.

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