©
National Instruments
E-1
VXI-MXI-Express Series User Manual
How to Fix an Invalid EEPROM
Configuration
The NI VXI-8360T/LT controller uses an EEPROM to store configuration
settings required at power on. Certain EEPROM configurations could cause
your computer to lock up while booting. Generally, the size and location of
memory windows will cause this issue.
Many PCI-based computers will not boot if a board in the system is
requesting more memory space than the computer can allocate. If you
encounter this situation you should reduce the size of the
NI VXI-8360T/LT controller user memory window.
The EEPROM can also become corrupt if the NI VXI-8360T/LT controller
loses power while software is updating the EEPROM.
To aid in EEPROM recovery the EEPROM is divided into two halves—one
half is factory configured and the other half is user configurable. By default
the VXI-MXI-Express boots from the user half of the EEPROM. Should
the EEPROM become corrupt complete the following steps to restore the
EEPROM to its factory settings:
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 NI
VXI-8360T/LT controller.
2.
Change jumper W5 to the position shown in Figure E-1 to restore the
factory configuration. Refer to Figure B-1,
, for jumper locations.
Figure E-1 shows the configuration settings for EEPROM operation. Use
jumper W5 to control whether the NI VXI-8360T/LT controller boots off
the factory-configured EEPROM settings or the user-modified settings.
