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13.7 PNP/PCI SETUP
Option
BIOS
Default
PNP OS Installed
No
Resources Controlled
Auto
By
Reset Configuration
Dis.
Data
IRQ n Assigned To
(n=0, 1, 3, 5, 6, 7)
DMA n Assigned To
(n=3, 4, 5, 7, 9, 11, 12,
13, 14, 15)
PCI IRQ Activated By
Level
PCI IDE IRQ Map To
PCI-
Auto
Primary IDE INT #
A
Secondary IDE INT #
Used Mem Base
N/A
Address
Used Mem Length
-
Setup
Possible
Default
Settings
No
Yes ; No
If the operating system (OS) is Plug-and-Play, select 'Yes' if you
want the OS to allocate resources according to PnP standards, or
'No' if you want the same resource allocation at every system boot-
up. Select 'No' when the OS is not PnP (for example DOS).
Man.
Auto ; Manual
The Award Plug and Play BIOS can automatically configure all the
boot and Plug and Play-compatible devices. If you select Auto, all
the interrupt requests (IRQs) and DMA assignment fields disappear,
as the BIOS automatically assigns them.
Dis.
En. ; Dis.
Normally, you leave this field Disabled. Select En. to reset Extended
System Configuration Data (ESCD) when you exit Setup if you have
installed a new add-on and the system reconfiguration has caused
such a serious conflict that the operating system cannot boot.
PCI/ISA PnP ;
When resources are controlled manually, assign each system
Legacy ISA
interrupt as one of the following types, depending on the type of
device using the interrupt:
Legacy ISA Devices compliant with the original PC AT bus
specification, requiring a specific interrupt (such as IRQ4 for serial
port 1).
PCI/ISA PnP Devices compliant with the Plug and Play standard,
whether designed for PCI or ISA bus architecture.
PCI/ISA PnP ;
When resources are controlled manually, assign each system DMA
Legacy ISA
channel as one of the following types, depending on the type of
device using the interrupt:
Legacy ISA Devices compliant with the original PC AT bus
specification, requiring a specific DMA channel.
PCI/ISA PnP Devices compliant with the Plug and Play standard,
whether designed for PCI or ISA bus architecture.
Level
Level ; Edge
Leave the IRQ trigger set at Level unless the PCI device assigned to
the interrupt specifies Edge-triggered interrupts.
PCI-
PCI-Auto; ISA;
This field lets you select PCI IDE IRQ mapping or PC AT (ISA)
PCI-SLOT1;
interrupts. If your system does not have one or two PCI IDE
Auto
PCI-SLOT2 ;
connectors on the system board, select values according to the type
PCI-SLOT3;
of IDE interface(s) installed in your system (PCI or ISA). Standard
PCI-SLOT4
ISA interrupts for IDE channels are IRQ14 for primary and IRQ15 for
secondary.
A
A ; B ; C ; D
Each PCI peripheral connection is capable of activating up to four
interrupts: INT # A, INT # B, INT # C and INT # D. By default, a PCI
connection is assigned INT # A. Assigning INT # B has no meaning
unless the peripheral device requires two interrupt services rather
than just one. Because the PCI IDE interface in the chipset has two
channels, it requires two interrupt services. The primary and
secondary IDE INT # fields default to values appropriate for two PCI
IDE channels, with the primary PCI IDE channel having a lower
interrupt than the secondary.
NA ; C800 ; CC00
N/A
Select a base address for the memory area used by any peripheral
; D000 ;
that requires high memory.
D400 ; D800 ;
DC00
-
4K, 16K, 32K,
Select a length for the memory area specified in the previous field.
64K
This field does not appear if no base address is specified.
13-11
BIOS Setups
Description
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