7
The Data Execution Prevention option is disabled by default in i915-based systems, and enabled by
default in i945-based systems. Applications and drivers run without compatibility problems when the XD
feature is not enabled.
HP uses the i915 chipset desktop BIOS family in the following product lines (not all systems available in
all regions):
• dc5100
• dx6100
• dc7100
HP uses the i945 chipset desktop BIOS family in the following product lines (not all systems available in
all regions):
• dc7600
• dx7200
HP uses the ATI Radeon Xpress 200 chipset desktop BIOS family for AMD processors in the following
product line (not all systems available in all regions):
• dx5150
The BIOS for the bc1000 disables NX support for the Transmeta processor. There is no option to
enable NX.
The following workstations and associated chipsets also support DEP (not all systems available in all
regions):
• HP Workstation xw4200 – Intel 925X chipset
• HP Workstation xw6200 – Intel E7525 chipset
• HP Workstation xw8200 – Intel E7525 chipset
These workstations disable DEP by default. However, you can manually enable DEP in BIOS.
Operating System
Microsoft implemented XD/NX support with Windows XP Service Pack 2. All future Microsoft operating
systems, including the upcoming “Longhorn” operating system, will have XD/NX support. Previous operat-
ing systems do not support the XD/NX features.
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