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ASUS P3B-1394 User’s Manual58
4. BIOS SETUP
Plug & Play / PCI
4. BIOS SETUP
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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.
USB IRQ (Enabled)
Enabled reserves an IRQ# for the USB to work, Disabled does not allow the USB to
have an IRQ# and therefore prevents the USB from functioning. If you are not using
any USB devices, you may set this feature to Disabled to save an extra IRQ# for
expansion cards.
VGA BIOS Sequence (PCI/AGP)
If your computer has both PCI and AGP VGA cards, this field allows you to select
which of the cards will act as your primary card. The default, PCI/AGP, allows your
PCI card to take precedent when detected. AGP/PCI uses the AGP card as your
primary card.
Onboard Audio (Enabled)
This feature allows you to enable or disable the onboard audio device. If you want to
use your own audio devices, set this field to Disabled.
Onboard 1394 (Enabled)
This feature allows you to enable or disable the onboard 1394 controllers. If you are
not using any IEEE-1394 devices, you may disable this field.