Chapter 2
Installation and Configuration
VXI-1394 Interface for Windows NT/98
2-6
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Install Your VXI-1394 Interface Board
All kits contain a VXI-1394 interface module.
Install the VXI-1394 in Slot 0 of your VXI chassis by doing the following:
1.
Turn off the power.
2.
Insert the VXI-1394/G into the chassis in Slot 0. See Figure 2-1.
3.
Turn on the power.
The VXI-1394 default configuration automatically detects whether it
should be the VXI system controller. The VXI system controllers operate
certain VXI lines as required for VXI systems. Verify that any other VXI
devices with system controller capability that are located in the same
chassis are not configured as system controller.
Caution
Having more than one device configured as system controller can damage the
VXI system.
For VXI systems that include VME devices, ensure that the VME devices
are not configured in the upper 16 KB (starting from 0xC000) of the
A16 address space. This region is reserved for VXI device configuration
registers, which are used for initializing, configuring, and interacting with
VXI devices. The VXI-1394 also uses this region for this purpose.
Note
Also ensure that no VXI devices in your system are configured for logical address 0.
This is the default configuration for the VXI-1394.
Connect Cables
Connect the IEEE 1394 cable to the PCI-1394 host adapter and to the
VXI-1394, as shown in Figure 2-1 at the beginning of this section. You
can use any available 1394 port for each device. The VXI-1394 has three
external ports. The OHCI 1394 host adapter has three external ports.
You can connect any other 1394 devices to any available port on an existing
device, but for best results minimize the number of levels in the tree
topology. Adding to the number of levels in the tree degrades system
performance.
Caution
Do not cable devices to your 1394 system in such a way as to form a loop. Any
device should have only one connection to the 1394 bus. An example of a loop would be a
system containing a PCI-1394, a VXI-1394, and a device connected to both. Such a closed
loop would break the 1394 system.
