Advanced Features 53
• Diskette Interface — The settings are Auto (default), Read Only, and Off.
Auto turns off the integrated floppy drive controller when necessary to
accommodate a controller card installed in an expansion slot.
Read Only prevents the computer's integrated floppy drive controller from
writing to floppy drives and activates Auto.
• USB Emulation — The settings are On and Off.
• Primary Video Controller — The settings are Auto and AGP (default).
Auto — If only an AGP card is installed, the computer uses the AGP card; if
only a PCI card is installed, the computer uses the PCI card; if both AGP and
PCI cards are installed, the computer uses the PCI card to boot.
AGP (default) — The computer uses the AGP card.
• Video DAC Snoop — The settings are Off (default) and On.
On corrects video problems such as incorrect colors or blank windows that
may occur when you use certain video cards.
For the Dell Precision™ Workstation 650 only:
• 1394 Controller — Enabled is the default.
• SCSI Controller — Disabled is the default.
KEYBOARD NUMLOCK —The settings are On and Off (does not apply to
84-key keyboards).
On — Activates the rightmost bank of keys so they provide the mathematical
and numeric functions shown at the top of each key.
Off — Activates the rightmost bank of keys so they provide cursor-control
functions shown by the label on the bottom of each key.
MEMORY INFORMATION — Indicates amount of installed memory, computer
memory speed, and AGP Aperture size
PCI IRQ ASSIGNMENT — Specifies which IRQ lines are assigned to the PCI
devices installed in the computer
Press <Enter> and 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.
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