Table 2-2. Possible Base I/O Address Switch Settings For At-Gpib/Tnt - National Instruments AT-GPIB/TNT Getting Started

Chapter 2 Installation and Configuration
AT-GPIB/TNT for Windows 98/95
Follow these steps to reconfigure the base I/O address of the
AT-GPIB/TNT:
1. Locate the base I/O address switch at SW1 on your AT-GPIB/TNT
board. Refer to the parts locator diagram, Figure 2-5.
2. Change the switch settings to configure the GPIB board to match
the base I/O address of the Input/Output Range assigned by
Windows.
Press down on the side marked OFF to select a binary value of 1 for
the corresponding address bit. Press down on the ON side of the
switch to select a binary value of 0. Refer to Figure 2-6 for an
example of the switch settings and corresponding base I/O
addresses. Table 2-2 shows the possible switch settings, the
corresponding base I/O addresses, and the I/O address space used
for each setting. The default settings are in bold italics.

Table 2-2. Possible Base I/O Address Switch Settings for AT-GPIB/TNT

Switch Setting
A9 A8 A7
0 1 0
0 1 0
0 1 0
0 1 0
0 1 1
0 1 1
0 1 1
0 1 1
1 0 0
1 0 0
1 0 0
1 0 0
Base I/O
A6 A5
Address (hex)
0 0 100
0 1 120
1 0 140
1 1 160
0 0 180
0 1 1A0
1 0 1C0
1 1 1E0
0 0 200
0 1 220
1 0 240
1 1 260
2-8
I/O Address
Space Used (hex)
100 to 11F
120 to 13F
140 to 15F
160 to 17F
180 to 19F
1A0 to 1BF
1C0 to 1DF
1E0 to 1FF
200 to 21F
220 to 23F
240 to 25F
260 to 27F
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