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.
Selecting Off disables the integrated EIDE interface.
Diskette Interface
Diskette Interface controls the operation of the system's integrated diskette drive controller.
With Auto (the default) selected, the system turns off the integrated diskette drive controller when necessary to accommodate a controller card
installed in an expansion slot.
With Read Only selected, nothing can be written to any diskette drives and tape drives using the system's integrated diskette/tape drive controller.
(The system can still read from the drives.) When Read Only is selected, Auto (whereby the system turns off the integrated diskette drive
controller as necessary) is also in effect.
Selecting Off turns off the integrated diskette/tape drive controller; this setting is used primarily for troubleshooting purposes.
USB Emulation
USB Emulation determines whether the system basic input/output system (BIOS) controls Universal Serial Bus (USB) keyboards and mice.
When On is selected, the system BIOS controls USB keyboards and mice until a USB driver is loaded by the operating system. When Off is
selected (the default), the system BIOS does not control USB keyboards and mice, though they are functional during the boot routine. Set USB
Emulation to Off if you are using a Personal System/2 (PS/2)-compatible keyboard and mouse.
PC Speaker
PC Speaker determines whether the integrated speaker is On (the default) or Off. A change to this option takes effect immediately (rebooting the
system is not required).
Video DAC Snoop
Video DAC Snoop lets you correct video problems that may occur when you use certain video expansion cards. The default is Off. If you are
using a video expansion card and problems such as incorrect colors or blank windows occur, set Video DAC Snoop to On.
SCSI Controllers
SCSI Controllers turns the integrated SCSI channels On or Off (the default).
Keyboard NumLock
Keyboard NumLock determines whether your system boots with the Num Lock mode activated on 101- or 102-key keyboards (it does not apply
to 84-key keyboards).
When Num Lock mode is activated, the rightmost bank of keys on your keyboard provides the mathematical and numeric functions shown at the
tops of the keys. When Num Lock mode is turned off, these keys provide cursor-control functions according to the label on the bottom of each key.
PCI IRQ Assignment
PCI IRQ Assignment specifies which IRQ lines are assigned to the Peripheral Component Interconnect (PCI) devices installed in the computer.
Press <Enter> to configure these devices. Then select the device whose IRQ line you want to change, and press the plus (+) or minus (–) key to
scroll through the available IRQ lines. Normally you do not need to change the IRQ lines assigned to PCI devices unless a particular device, device
