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I/o device confi guration – SUPER MICRO Computer Dual Processor AS 1020C-3 User Manual

Page 83

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Chapter 7: BIOS

7-9

PCI Express Spread Spectrum

This setting is used to enable spread spectrum for the PCI Express. Options

are Disabled and Down Spread.

Primary Video

This setting is used to switch the PCI bus scanning order while searching for the

video card. It allows the user to select the type of primary VGA in case of multiple

video controllers. Options are Slave PCI-Express and Master PCI-Express.

I/O Device Confi guration

Onboard Floppy Controller

Use this setting to Enable or Disable the onboard fl oppy controller.

Serial Port1 Address

This option specifi es the base I/O port address and 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 physically becomes

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 and 2E8/IRQ3.

Serial Port2 Address

This option specifi es the base I/O port address and Interrupt Request address of

serial port 2. Select "Disabled" to prevent the serial port from accessing any system

resources. When this option is set to "Disabled", the serial port physically becomes

unavailable. Select "2F8/IRQ3" to allow the serial port to use 2F8 as its I/O port

address and IRQ 3 for the interrupt address. The options are Disabled, 2F8/IRQ3,

3E8/IRQ4 and 2E8/IRQ3.

Serial Port 2 Mode

Tells BIOS which mode to select for serial port 2. The options are Normal,

IrDA and ASKIR.