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4 BIOS setup

Parameter

Description

Option

 

 

 

Serial Port A/B

Base address and IRQ (interrupt request)

Base I/O Address

setting for serial port A/B. Options

Interrupt

include:

 

Enabled - user assigned configuration

 

Disabled - no configuration

 

Auto - configuration is assigned by BIOS

 

or the system operating system

Auto

Disabled

Enabled

Parallel Port

Mode

Base I/O Address

Interrupt

DMA Channel

Mode, base address, IRQ, and DMA channel for the parallel port.

Mode - sets the operation mode

Base address - sets a logical base address

Interrupt - sets the IRQ

Auto

Disabled

Enabled

DMA Channel - assigns a DMA (Direct Memory Access) channel for the ECP (Extended Capabilities Port) parallel port function. This parameter is configurable only if the operation mode is ECP.

Legacy USB

Enable this parameter when you intend

Support

to use a USB device and are using a

 

non-Plug and Play operating system, such

 

as DOS.

Disabled

Enabled

PS/2 Mouse

Enable this parameter if you intend to

Disabled

 

use a mouse or trackball with a PS/2

Enabled

 

interface.

 

 

 

 

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Acer G901 manual 130