Chapter 5
VXI-MXI-2 Configuration and Installation
©
National Instruments Corporation
5-15
MXI-2 Configuration Reference Manual
Table 5-1 lists the SIMM types you can use. You can use 32- or 36-bit
SIMMs because DRAM parity is not required. Because the VXI-MXI-2
supports only one organization at a time, all SIMMs installed must be of the
same type. Use Bank 0 first when installing the SIMMs, and use Bank 1
when you need to install a second, matching SIMM. As shown in Table 5-1,
you can install up to 64 MB. The VXI-MXI-2 supports DRAM speeds of
80 ns or faster.
Use switch S6 to select the size of each SIMM. If the SIMMs are 4 M
×
32
or larger, set S6 to the OFF setting as shown in Figure 5-10a. For SIMMs
smaller
than 4 M
×
32, use the ON setting as shown in Figure 5-10b.
Figure 5-10.
SIMM Size Configuration
Refer to Table 5-1 for how to adjust the switch (ON or OFF) for all
supported DRAM configurations. Many of the DRAM options are
available from National Instruments.
Note
After installing DRAM on the VXI-MXI-2, you need to enable the memory through
Measurement and Automation Explorer (MAX).
Table 5-1.
VXI-MXI-2 DRAM Configurations
Bank 0
Bank 1
Total DRAM
National
Instruments
Option
Switch Setting
of S6
—
—
0
—
—
256 K
×
32 or
256 K
×
36
—
1 MB
—
ON
256 K
×
32 or
256 K
×
36
256 K
×
32 or
256 K
×
36
2 MB
—
ON
512 K
×
32 or
512 K
×
36
—
2 MB
—
ON
b. Smaller than 4 M
×
32
a. 4 M
×
32 and Larger
S6
S6
SIMM SIZE
( = 4M
×
32
AND LARGER)
SIMM SIZE
( = 4M
×
32
AND LARGER)