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Configuring and Expanding Your Computer
Using the BIOS Setup Utility
80 Reference Guide
System Devices Menu
Setting Description Default
PS/2 Pointing Devices Disables the internal pointing devices when an external PS/2
mouse is connected.
Auto
External Fn Key Sets whether left CTRL+left ALT on an external keyboard is
interpreted as the Fn key.
Enabled
IDE Controller Enables the primary (hard drive) and secondary (module bay
device) controllers.
Both
FDD Controller Enables the floppy drive. Enabled
Serial port Sets whether the serial port is active, and whether it is
configured automatically or by the user.
Enabled
Base I/O address Sets the I/O address and interrupt. 3F8h, IRQ4
IrDA port Sets whether the infrared port is active, and whether it is
configured automatically or by the user.
Disabled
Mode Sets the hardware to support FIR (Fast IR) or SIR (Standard
IR) infrared communications. (Driver installation required for
Windows 95.)
FIR
Base I/O address Sets the I/O address and interrupt. 2F8h, IRQ3
DMA channel Sets the DMA channel for Fast IR (FIR) mode. DMA0
Parallel Port Sets whether the parallel port is configured by the user or the
BIOS or OS (automatically), or not at all.
Enabled
Mode Sets the port to output only, bi-directional, EPP, or ECP. ECP
Base I/O address Sets the I/O address. 378h
Interrupt Sets the interrupt. IRQ7
DMA channel Sets the DMA channel for ECP mode. DMA3