The 845D-MVT MAINBOARD
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Primary/Secondary, Master/Slave PIO
The four IDE PIO (Programmed Input/Output) fields let you set a PIO mode
(0-4) for each of the four IDE devices that the onboard IDE interface supports.
Modes 0 through 4 provide successively increased performance. In Auto mode,
the system automatically determines the best mode for each device.
Primary/Secondary, Master/Slave UDMA
Ultra DMA/66 implementation is possible only if your IDE hard drive supports it
and the operating environment includes a DMA driver (Windows 98 OSR2 or a
third-party IDE bus master driver). If your hard drive and your system
software both support Ultra DMA/66, select Auto to enable BIOS support.
USB Controller
This field allows you to enable or disable the onboard USB Controller.
USB Keyboard Support
If you are using an older (legacy) operating system (such as MS-DOS) and
you’re installing a USB keyboard you must enable this Field. For PnP O/S like
Windows 98, Windows 2000, Windows ME etc you should retain the default
setting.
AC97 Audio
If you want to enable the on-chip audio capabilities of your system you need
use the default setting “Auto”. If you install an add on sound card you must
disable this field.
Init Display First
When both AGP and PCI VGA card are installed on a mainboard, this field can
be used to determine the display loading priority during System Startup.
IDE HDD Block Mode
Block Mode is also called Block Transfer, Multiple Commands, or Multiple Sec-
tor Read/Write. If your IDE hard drive supports Block Mode (most new drives
do) then this field should be enabled. If this field is enabled then the optimal
number of block read/writes per sector the drive can support will be deter-
mined automatically.
POWER ON Function
The POWER ON Function allows you to select different ways to power on your
PC System.
Managing The PC BIOS
