Chapter 3
17
AGP Aperture Size
This function determines the amount of system memory that is given to the AGP
card. Options range from
4MB
to
256MB
. This is a dynamic memory allotment in
that the AGP card will only use the amount of memory that it needs. The remaining
memory, which is not in use, will be available for the system. For example, if 16MB
is allotted to the AGP card and the card only needs 8MB, the remaining 8MB will be
available for system use.
Flash BIOS Protection
The motherboard manufacturer developed BIOS protection technology that protects
the System BIOS from accidental corruption by unauthorized users or computer
viruses. When enabled, the BIOS data cannot be changed when attempting to update
BIOS with the FLASH utility. When disabled, the BIOS data can be updated by
using the FLASH utility.
3-4 Integrated Peripherals
This section provides information on setting peripheral devices. By choosing the
Integrated Peripherals option from the CMOS Setup Utility menu (Figure 3-1), the
screen below is displayed. This sample screen contains the manufacturer's default
values for the motherboard.
OnChip IDE Device
Press [
Enter
] to enter the sub-menu, which contains the following items for
advanced control:
1.
OnChip Primary/Secondary PCI IDE
You can set this to disable the On Chip IDE controller if you are going to add a
higher performance IDE board
2.
IDE Primary/Secondary Master/Slave PIO
The four IDE PIO (programmed Input/Output) fields let you set a PIO mode (0-4)
for each IDE device that the internal PCI IDE interface supports. Modes 0 through
4 provide successively increased performance. In Auto mode, the system
automatically determines the best mode for each device.
3.
IDE Primary/Secondary Master/Slave UDMA
Ultra DMA implementation is possible only if your IDE device supports it and
your operating environment contains a DMA driver. If both your hard drive and
software support Ultra DMA, select [
Auto
] to enable BIOS support.
4.
IDE HDD Block Mode
Block mode is also called block transfer, multiple commands, or multiple sector
read/write. If your IDE hard drive supports block mode, select Enabled to
Chapter 3
18
auto-detect the optimal number of block read/writes per sector the drive can
support.
OnChip PCI Device
This section provides information for setting onboard device. By choosing the
Integrated Peripherals option from the CMOS Setup Utility menu (Figure 3-5), the
screen below is displayed. This sample screen contains the manufacturer's default
values for the motherboard
Press [
Enter
] to enter the sub-menu, which contains the following items for
advanced control:
1.
AC97 Audio
This feature allows you to enable/disable the on-board AC97 audio function.
2.
AC97 Modem
This item allows you to enable/disable the MCP chipset’s feature to support MC97
Modem.
Super IO Device
This section provides information on setting Super I/O device. By choosing the
Integrated Peripherals option from the CMOS Setup Utility menu (Figure 3-5), the
screen below is displayed. This sample screen contains the manufacturer's default
values for the motherboard.
Press [
Enter
] to enter the sub-menu, which contains the following items for
advanced control:
1.
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 you install an add-in FDC or the system has
no floppy drive, select Disabled in this field.
2.
Onboard Serial Port 1/2
Select an address and corresponding interrupt for the first and second serial
ports. Available options are [
3F8/IRQ4
], [
2E8/IRQ3
], [
3E8/IRQ4
],
[
2F8/IRQ3
], [
Disabled
], and [
Auto
].
3.
Com2 Mode Select
This function allows you to select an operating mode for the second serial
port. (Normal RS-232C serial port / IRDA / SCR / ASKIR 0.57-MB/sec
infrared port)
4.
IR Duplex Mode
Available options: [
Half
] and [
Full
].
5.
Onboard Parallel Port
Select a logical LPT port address and corresponding interrupt for the physical