Table A-1. Possible Base I/O Address Switch Settings - National Instruments AT-GPIB/TNT Getting Started

Appendix A
1. Choose a new base I/O address setting.
You can configure the base I/O addresses to any setting between 0x100 and 0x3E0
that is a multiple of 0x20 hex. If you are installing more than one GPIB board, each
board must use a unique base I/O address. You should not configure a base I/O
address of less than 0x100 for the board, because this portion of the address space is
reserved for your computer's system board.
Table A-1 lists the possible switch settings, the corresponding base I/O addresses,
and the I/O address space used for each setting.

Table A-1. Possible Base I/O Address Switch Settings

Switch Setting
A9 A8 A7
0 1
0 1
0 1
0 1
0 1
0 1
0 1
0 1
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 0
1 1
1 1
1 1
1 1
1 1
© National Instruments Corp.
Base I/O
A6 A5 Address (hex)
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
A-4
Changing Hardware Configuration Settings
I/O Address Space
Used (hex)
100 100 to 11F
120 120 to 13F
140 140 to 15F
160 160 to 17F
180 180 to 19F
1A0 1A0 to 1BF
1C0 1C0 to 1DF
1E0 1E0 to 1FF
200 200 to 21F
220 220 to 23F
240 240 to 25F
260 260 to 27F
280 280 to 29F
2A0 2A0 to 2BF
2C0 2C0 to 2DF
2E0 2E0 to 2FF
300 300 to 31F
320 320 to 33F
340 340 to 35F
360 360 to 37F
380 380 to 39F
AT-GPIB/TNT for DOS Graphics
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