BIOS Configuration
48
PCI/PnP configuration
Super IO device configuration
Table 47. PCI/PnP Configuration submenu
BIOS item Usage
Clear NVRAM This feature clears the NVRAM during system boot. The options are No and Yes.
Plug & Play OS Selecting Yes allows the OS to configure plug and play devices. (This is not required
for system boot if your system has an OS that supports plug and play.) Select No to
allow the AMI BIOS to configure all devices in the system.
PCI Latency Timer This feature sets the latency timer of each PCI device installed on a PCI bus. Select 64
to set the PCI latency to 64 PCI clock cycles. The options are 32, 64, 96, 128, 160,
192, 224 and 248.
PCI IDE BusMaster When enabled, the BIOS uses PCI bus mastering for reading/writing to IDE drives.
The options are Disabled and Enabled.
PCIe I/O Performance Some add-on cards perform faster with the coalesce feature, which limits the
payload size to 128 MB; other cards that have a payload size of 256 MB inhibit the
coalesce feature. Refer to your add-on card user guide for the appropriate setting.
The options are 256 MB and 128 MB.
PCI-E Slots 1–7 x8 This feature allows you to Enable or Disable any of the PCI slots. The options are
Enable and Disable.
Load Onboard LAN1
Option ROM/Load
Onboard LAN2 Option
ROM
Select Enabled to enable the onboard LAN1 or LAN2 Option ROM. This is for
booting the computer using a network interface. The options are Enabled and
Disabled.
Load Onboard SAS Option
ROM
Select Enabled to enable the onboard SAS Option ROM. This is for booting the
computer using a SAS drive or array. The options are Enabled and Disabled.
Table 48. Super IO Device Configuration submenu
BIOS item Usage
Serial Port1 Address This option specifies the base I/O port address and the Interrupt Request address of
Serial Port 1. Select Disabled to prevent the serial port from accessing any system
resources. When this option is set to Disabled, the serial port becomes physically
unavailable. Select 3F8/IRQ4 to allow the serial port to use 3F8 as its I/O port
address and IRQ 4 for the interrupt address. The options are Disabled, 3F8/IRQ4,
3E8/IRQ4, 2E8/IRQ3 and 2F8/IRQ3.
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