ASUS TX97-E User’s Manual
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IV. BIOS SOFTWARE
(Power Management)
(PnP and PCI)
IV
. BIOS
Details of PNP and PCI Setup
PNP OS Installed (No)
When Plug and Play operating systems (OS) are installed, interrupts may be reas-
signed by the OS when Yes is selected. When a non-Plug and Play OS is installed or
to prevent reassigning of interrupt settings, select No here.
Slot 1/2/3/4 IRQ (Auto)
The first four fields on the screen set how IRQ use is determined for each PCI slot.
Slot 1 (Right) is nearest the memory sockets. The default setting for each field is
Auto, which uses auto-routing to determine IRQ use. The other options are manual
settings of NA, 9, 10, 11, 12, 14, or 15 for each slot.
PCI Latency Timer (32 PCI Clock)
"32 PCI Clock" enables maximum PCI performance for this motherboard.
IRQ xx Used By ISA (No/ICU)
These fields indicate whether or not the displayed IRQ for each field is being used
by a Legacy (non-PnP) ISA card. Two options are available: No/ICU and Yes. The
first option, the default value, indicates either that the displayed IRQ is not used or
an ISA Configuration Utility (ICU) is being used to determine if an ISA card is
using that IRQ. If you install a Legacy ISA card that requires a unique IRQ, and you
are not using an ICU, you must set the field for that IRQ to Yes. For example: If you
install a Legacy ISA card that requires IRQ 10, then set IRQ10 Used By ISA to Yes.
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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 C800, CC00, D000, D400, D800, and DC00
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.
SCSI BIOS (Auto)
The default uses Auto settings for the onboard SCSI BIOS (see section VI). If you
wish not to use the onboard SCSI BIOS, choose Disabled
