Asus P5-99B - Manual (Page 61)

ASUS P5-99B User’s Manual 61
IV. BIOS SETUP
IV
. BIOS SETUP
Load Setup Defaults
IV
. BIOS SETUP
Plug & Play/PCI
DMA x Used By ISA (No/ICU)
These fields indicate whether or not the displayed DMA channel for each field is
being used by a legacy (non-PnP) ISA card. Available options include: No/ICU and
Yes. The first option, the default setting, indicates either that the displayed DMA
channel is not used or an ICU is being used to determine if an ISA card is using that
channel. If you install a legacy ISA card that requires a unique DMA channel, and
you are not using an ICU, you must set the field for that channel to Yes.
ISA MEM Block BASE (No/ICU)
This field allows you to set the base address and block size of a legacy ISA card that
uses any memory segment within the C800H and DFFFH address range. If you
have such a card, and you are not using an ICU to specify its address range, select a
base address from the six available options; the ISA MEM Block SIZE field will
then appear for selecting the block size. If you have more than one legacy ISA card
in your system that requires to use this address range, you can increase the block
size to either 8K, 16K, 32K, or 64K. If you are using an ICU to accomplish this task,
leave ISA MEM Block BASE to its default setting of No/ICU.
SYMBIOS SCSI BIOS (Auto)
Auto allows the BIOS to detect whether you have a Symbios SCSI card, if detected
the onboard Symbios BIOS will be enabled, if not then it will be disabled. Disabled
prevents the onboard Symbios BIOS to be enabled so that the external Symbios
SCSI card’s own BIOS can be used instead. Note: If your Symbios SCSI card does
not have a BIOS the Symbios SCSI card will not function.
USB Function (Disabled)
This motherboard supports Universal Serial Bus (USB) devices. Set to Enabled if
you want to use USB devices. Your system must support USB function. The default
setting is Disabled.
USB IRQ (Auto)
This field allows you to reserve an IRQ# (3, 4, 5, 7, 9, 10, 11, 12, 14, or 15) for the
USB to work. Auto assigns an IRQ# automatically to your USB device. If you are
not using a USB device, you may disable this feature by setting it to NA to save an
extra IRQ# for other devices or expansion cards.
ONB VGA BIOS First (No)
This field, when set to Yes, gives priority to the onboard VGA BIOS over other VGA
controllers. The default setting is No.