Hardware Configuration and Installation
Chapter 2
AT-GPIB for SCO UNIX
2-4
© N ational Instruments Corp.
side you press down. Each of the address selections shows how the base
I/O address was calculated from the switch positions.
Push this side down (OFF) for logic 1
Push this side down (ON) for logic 0
Switch Set to Hardware
Default Setting
(Base I/O Address 2C0 hex)
Switch Set to Match Software
Default Setting
(Base I/O Address 260 hex)
9
8
7
6
5
U25
ADDRESS
Binary
Hex
0
C
2
9
8
7
6
5
Binary
Hex
0
6
2
1
0
1
1
0
0
0
0
0
0
1
0
0
1
1
0
0
0
0
0
U25
ADDRESS
1
0
1
0
12
3
4
5
OFF
12
3
4
5
OFF
Figure 2-2. Base I/O Address Switch Settings