Appendix C Advanced Hardware Configuration Settings
VXI-MXI-Express Series User Manual C-4 ni.com
location of the memory windows can cause the VXI-MXI-Express Series
controller to lock up your system. For example, many PCI-based computers
will not boot if a board in its system requests more memory space than the
computer can allocate. If you encounter this situation, you should reduce
the size of the VXI-MXI-Express Series controller user memory window.
The EEPROM can become corrupted if theVXI-MXI-Express Series
controller is shut down while it is updating the EEPROM.
If one of these situations occurs after you change the configuration,
complete the following steps to reconfigure the VXI-MXI-Express
Series controller.
1. Power off your computer.
Caution To protect both yourself and the mainframe from electrical hazards,
the mainframe should remain off until you finish changing the settings on the
VXI-MXI-Express Series controller.
2. Change jumper W5 to the position shown in Figure C-2b to restore the
factory configuration.
3. Power on the computer. The computer should boot this time because
the factory-default configuration is being used to initialize the
VXI-MXI-Express Series controller.
4. Run your software configuration utility to re-adjust the
VXI-MXI-Express Series controller configuration.
5. After saving the configuration, exit Windows and power off the
computer.
6. Change jumper W5 to the default position, as shown in Figure C-2a.
7. Power on the computer. If the computer does not boot with this
configuration, you will need to repeat these steps, modifying your
configuration until a final configuration is reached.
VXIbus CLK10 Routing
When the VXI-MXI-Express Series controller is installed in Slot 0 of your
mainframe, it supplies the VXIbus CLK10 signal. Three different sources
for CLK10 are available with the VXI-8360T:
• The internal 10 MHz ±100 ppm CLK10 oscillator. This is the default
CLK10 source.
• The front panel CLK10 SMB. When configured as an input the front
panel SMB allows an external source to be used as the source for the
VXIbus CLK10 signal.