Table 2-2. Possible Base I/O Address Settings For The At-Mxi - National Instruments VXI-AT2023 Getting Started

Chapter 2
Table 2-2 lists the 24 possible switch settings, the corresponding base I/O address, and the I/O
address space used for that setting. Notice that the base address settings that correspond to an I/O
address in the range from 0 to FF hex are not listed. These addresses are used by logic on the PC
AT motherboard and cannot be used by I/O adapter modules.

Table 2-2. Possible Base I/O Address Settings for the AT-MXI

Switch Setting
A9 A8 A7 A6 A5
0 1 0 0 0
0 1 0 0 1
0 1 0 1 0
0 1 0 1 1
0 1 1 0 0
0 1 1 0 1
0 1 1 1 0
0 1 1 1 1
1 0 0 0 0
1 0 0 0 1
1 0 0 1 0
1 0 0 1 1
1 0 1 0 0
1 0 1 0 1
1 0 1 1 0
1 0 1 1 1
1 1 0 0 0
1 1 0 0 1
1 1 0 1 0
© National Instruments Corporation
Base I/O Address
(hex)
100
120
140
160
180
1A0
1C0
1E0
200
220
240
260
280
2A0
2C0
2E0
300
320
340 (default)
2-5 VXI-AT2023/NI-VXI ISC 386/ix Getting Started
Hardware Configuration and Installation
I/O Ports Used
(hex)
100 - 11F
120 - 13F
140 - 15F
160 - 17F
180 - 19F
1A0 - 1BF
1C0 - 1DF
1E0 - 1FF
200 - 21F
220 - 23F
240 - 25F
260 - 27F
280 - 29F
2A0 - 2BF
2C0 - 2DF
2E0 - 2FF
300 - 31F
320 - 33F
340 - 35F
(continues)