Appendix B
Advanced Hardware Configuration Settings
VXI-MXI-Express Series User Manual
B-8
ni.com
Power-On Self Configuration
The NI VXI-8360T/LT 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 B-5 shows the possible configurations
for W8.
Figure B-5.
Power-on Self Configuration Status
a
. En
ab
le (def
au
lt)
b
. Di
sab
le
W
8
2
3
1
W
8
2
3
1
