Chapter 2
Installation and Configuration
©
National Instruments
2-9
NI PXI-8119 User Manual
disabled, the bus, memory, and I/O options disappear from this
submenu. Disabling this setting effectively sets
Reserved Buses
to
0
,
Reserved Memory
to
0M
, and
Reserved I/O
to
0K
.
•
Reserved Buses
—This setting determines the number of PCI buses
that will be reserved by the BIOS for ExpressCard PCI-PCI bridges
that may be hot-plugged in the ExpressCard slot. The default value for
this setting is
8
PCI buses.
•
Reserved Memory
—This setting determines the amount of memory
space, in bytes, that will be reserved by the BIOS for PCI-PCI bridges
that may be hot-plugged in the ExpressCard slot. The default value for
this setting is
64M
bytes of memory.
•
Reserved I/O
—This setting determines the amount of I/O space, in
bytes, that will be reserved by the BIOS for PCI-PCI bridges that may
be hot-plugged in the ExpressCard slot. The default value for this
setting is
4K
bytes of I/O space.
USB Configuration Submenu
Use this submenu to apply alternate configurations to the USB ports.
Normally, you do not need to modify these settings, as the factory default
settings provide the most compatible and optimal configuration possible.
•
USB Devices
—This item lists the total number of devices detected in
the system, categorized by device type.
•
Legacy USB Support
—This setting specifies whether or not legacy
USB support is enabled. Legacy USB support refers to the ability to
use a USB. keyboard and mouse during system boot or in a legacy
operating system such as DOS. The default value is
Enabled
. This
option is automatically
Disabled
when booting LabVIEW Real-Time
in order to reduce application jitter.
•
Overcurrent Reporting
—This setting allows the BIOS to notify the
operating system of any USB ports which sources too much current.
The default value for this setting is
Disabled
.
•
Transfer Timeout
—This setting specifies the timeout value for
Control, Bulk, and Interrupt USB transfers. The default value for this
setting is
20
seconds.
•
Device Reset Timeout
—This setting specifies the number of seconds
the Power-On Self Test will wait for a USB mass storage device to
start. The default is
20
seconds.
•
Device Power-up Delay
—This setting specifies the maximum time a
device will take before it properly reports itself to the host controller.
When set to
Auto
, a root port is granted 100 ms, and for a hub port, the
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