National Instruments NI VXIpc-882 - Manual (Page 28)

Chapter 3 Configuration and Default Settings
© National Instruments Corporation 3-7 NI VXIpc-882 User Manual
Figure 3-3 shows the configuration settings for EEPROM operation.
Figure 3-3. EEPROM Configuration
Power-On Self Configuration
The NI VXIpc-882 controller has an onboard EEPROM, which stores
default register values for the VXI circuitry. These values are loaded when
you power up the computer. The values read from the EEPROM program
the PCI interface and the VXIbus registers so that the VXI interface is ready
to respond to Resource Manager accesses within the required 5 seconds of
SYSRST# deasserting.
You can disable this power-on self-configuration (POSC) circuit by
changing switch W8. Although this makes the VXI circuitry unusable,
it is sometimes helpful in debugging address and interrupt conflicts
with add-in boards. In general, however, you should leave W8 in its
factory-default setting. Figure 3-4 shows the possible configurations
for W8.
Figure 3-4. Power-on Self Configuration Status
How to Fix an Invalid EEPROM Configuration
Use MAX under Windows to edit the NI VXIpc-882 controller
configuration. Some of these settings are stored in files that the NI-VXI
software reads, while other settings are stored directly in the NI VXIpc-882
controller EEPROM.
Certain EEPROM configurations, including invalid configurations, can
lock up your computer while it is booting. Generally, only the size and
a. Boot from User
Configuration (Default)
b. Boot from Protected
Configuration
W5 W5
2
3
1
2
3
1
a. Enable (default) b. Disable
W8
2 3 1
W8
2 3 1