Users Guide

Likewise, COM2 (I/O address 2F8h), which shares IRQ3 with COM4, is remapped to COM4 (I/O address 2E8h).
NOTE: When two COM ports share an IRQ setting, you can use either port as necessary, but you may not be able
to use them both at the same time. If the second port (COM3 or COM4) is also in use, the built-in port is turned
off.
Parallel Port
Parallel Port configures the system's built-in parallel port. Parallel Port can be set to 378h (the default), to alternate
addresses 278h or 3BCh, or to Off to disable the port.
NOTE: Do not set Parallel Port to 278h if you have an Extended Capabilities Port (ECP) device connected to the
port.
Parallel Mode
Parallel Mode controls whether the system's built-in parallel port acts as an AT-compatible (unidirectional) or PS/2-
compatible (bidirectional) port.
Set Parallel Mode according to the type of peripheral device connected to the parallel port. To determine the correct
mode to use, see the documentation that came with the device.
IDE Controller
This option controls integrated IDE drive controller operation. Settings are Auto (the default) and Off.
If IDE Controller is set to Auto and the system detects a drive controller card installed, the system disables the
integrated IDE controller. If a drive controller card is not detected, the system enables the integrated IDE controller.
When IDE Controller is set to Off, the integrated IDE controller is always disabled.
Diskette
Diskette controls the operation of the system's built-in diskette drive controller.
With Auto (the default) selected, the system turns off the built-in diskette drive controller when necessary to
accommodate a controller card installed in an expansion slot.
With Write Protect selected, nothing can be written to diskette drives using the system's built-in diskette drive
controller. (The system can still read from the drives.) When this setting is selected, the Auto setting (whereby the
system turns off the built-in diskette drive controller as necessary) is also in effect.
Selecting Off turns off the built-in diskette controller; this setting is used primarily for troubleshooting purposes.
Speaker
Speaker controls the built-in speaker. The default is On. Rebooting the system is required for a change to take effect.
SCSI
SCSI turns the integrated SCSI controller On (the default) or Off.
System Data