Installed O/S: Select the operating system installed on your system which you will use most commonly. An incorrect setting can cause the unexpected system behavior.

PS/2 Mouse: Disabled prevents both the touchpad and external PS/2 port fro functioning. Single mouse (default) enables the external PS/2 port or the touchpad, and external PS/2 port has proirity. Dual Mouse allows the use of both the touchpad and PS/2 port.

Screen Expansion: Enables or disables the Screen Expansion mode. If you set this field to Enabled, the system expands VGA mode (DOS mode or 640x480 Graphic mode) to use the full size of the LCD. If this field is Disabled VGA mode appears as a 640x480 box in the LCD.

TV Out Mode: Select TV standard such as NTSC(default), PA .

Display Configuration: Enable you to set the default display. Options are LCD, CRT and Both. Choose LCD to use the built-in display only, CRT to use an external monitor only or BOTH to have both built-in and external displays used as the dafault. If you select CRT and no external monitor is attached you will see no display until you attach the external monitor. The default is LCD.

I/O Device Configuration: Opens the I/O Device Configuration submenu if you press <Enter> when this field is highlighted. If you attempt to set two ports to the same settings, the fields will be marked with asterisks.

The submenu contains these fields:

Serial port: Configures serial port. The options for this field are Enabled (default), and Disabled. If you set this field to Enabled, you can set the Base I/ O Address field to 3F8 IRQ4 (default), 2F8 IRQ3, 3E8 IRQ4, or 2E8 IRQ3. When the field is set to Enabled, the computer’s operating system uses the default configuration or the configuration you choose. If you select Disabled, you free up an IRQ for use by another device.

Infrared port: Configures the infrared port. The options for this field are Enabled, and Disabled (default). If you set this field to Enabled, you can set the Base I/O Address field and the Mode field and the Mode field. Settings for the Base I/O Address are 3F8 IRQ4, 2F8 IRQ3 (default), 3E8 IRQ4, or 2E8 IRQ3. Mode FIR (fast infrared) enables you to set the DMA channel to 3 or 1.

When the Infrared port field is set to Enabled, the computer’s operating system uses the default configuration or the configuration you choose. If you select Disabled, you free up an IRQ for use by another device.

Parallel port: Configures the parallel port. The options for this field are Enabled (default), and Disabled. If you set this field to Enabled, you can set

68 Using System Setup