Chapter 3 VXIpc 800 Series Configurationand Installation
VXIpc 800 Series User Manual 3-12 © National Instruments Corporation
System CMOS
The VXIpc-800 contains a backed-up memory used to store BIOS
defaults and configuration information.
To clear the CMOS contents, simply short the pins of W2 as shown in
Figure 3-12b.
Caution: You should not keep these two pins shorted because the CMOS memory
cannot be sustained when the power is turned off if these two pins are
shorted.
Figure 3-12. System CMOS
Parallel Port DMA Level
You can use jumper W4 to configure the parallel port for either DMA
level 1 or DMA level 3. Refer to Figure 3-13 for the jumper settings.
Figure 3-13. Parallel Port DMA Channel
!
a. Normal Operation
(Default) b. Clear CMOS
Contents
W2 W2
a. Parallel Port Uses DMA
Channel 1 (Default) b. Parallel Port Uses
DMA Channel 3
W4 W4