Dell Precision 220 - Manual (Page 84)

l IDE Drive Interface
l Diskette Interface
l USB Emulation
l PC Speaker
l Primary Video Controller
l Video DAC Snoop
Press <Enter> to configure these options as explained in the following subsections.
Sound
Sound determines whether the integrated audio controller is On or Off. The default is On.
Network Interface Controller
Network Interface Controller determines whether the integrated NIC is On, Off, or On w/ MBA. The default is On w/ MBA, which means that the
NIC is enabled and set to boot the system remotely from a network server. If you select On w/ MBA, you are prompted to press <Ctrl><Alt><b> at
the Dell logo screen during boot. A menu then appears that allows you to select PXE, RPL, BootP, or NetWare as the active boot mode.
Mouse Port
Mouse Port enables or disables the system's integrated Personal System/2 (PS/2)-compatible mouse port. Disabling the mouse allows an
expansion card to use interrupt request (IRQ)12.
Serial Port 1 and Serial Port 2
Serial Port 1 and Serial Port 2 configure the system's integrated serial ports. You can set these options to Auto (the default) to automatically
configure a port, to a particular designation (COM1 or COM3 for Serial Port 1; COM2 or COM4 for Serial Port 2), or to Off to disable the port.
If you set a serial port to Auto and add an expansion card containing a port configured to the same designation, the system automatically remaps
the integrated port to the next available port designation that shares the same IRQ setting as follows:
l
COM1 (input/output [I/O] address 3F8h), which shares IRQ4 with COM3, is remapped to COM3 (I/O address 3E8h).
l COM2 (I/O address 2F8h), which shares IRQ3 with COM4, is remapped to COM4 (I/O address 2E8h).
Parallel Port
Parallel Port configures the system's integrated parallel port. Press <Enter> to configure Parallel Port options as follows:
l Mode — You can set this option to PS/2, EPP, ECP, AT, or Off to disable the port.
Set this option 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.
l I/O Address — This option determines the I/O address used by the parallel port and appears except when Mode is set to Off. You can set
I/O Address to 378h (the default), 278h, or 3BCh.
l DMA Channel — This option determines the direct memory access (DMA) channel used by the parallel port and appears only when Mode
is set to ECP. The available options are DMA 1, DMA 3, and Off.
IDE Drive Interface
IDE Drive Interface enables or disables the system's integrated enhanced integrated drive electronics (EIDE) hard-disk drive interface.
With Auto (the default) selected, the system turns off the integrated EIDE interface when necessary to accommodate a controller card installed in
an expansion slot.
As part of the boot routine, the system first checks for a primary hard-disk drive controller card installed in an expansion slot. If no card is found, the
system enables the integrated EIDE interface to use IRQ14 and IRQ15.
If a primary controller is detected on the expansion bus, the integrated EIDE interface is disabled.
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 integrated port is turned off.
NOTE: Do not set Parallel Port to 278h if you have an Enhanced Capabilities Port (ECP) device connected to the port.