National Instruments PXI/CompactPCI Embedded Computer NI PXI-8108 - Manual (Page 23)

Chapter 2 Installation and Configuration
© National Instruments Corporation 2-9 NI PXI-8108 User Manual
ExpressCard Configuration Submenu
Use this submenu to apply alternate settings to the ExpressCard
configuration. These settings determine how much memory space,
I/O space, and PCI bus numbers will be pre-allocated for the
ExpressCard port, allowing non-PCI Express-aware operating systems to
support hot-plugging ExpressCard devices. Normally, you do not need to
modify these settings, as the factory default settings provide the most
compatible and optimal configuration possible.
• 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 32M 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.
Note Certain real-time applications may require you to disable this setting to reduce loop
time jitter. When the controller is configured to boot LabVIEW RT, legacy USB support is
automatically disabled.
• Device Reset Delay—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.