Appendix C
Hardware and Software Configuration
© National Instruments Corp.
C-7
GPIB-PCII/IIA for Graphics
GPIB-PCIIA Mode
The GPIB-PCIIA base I/O address is set using switches 4 and 5 of the switch
block at U2. The four possible base I/O addresses are 2E1, 22E1, 42E1, and
62E1 hex.
Figure C-4 shows the switch settings for the four possible base I/O addresses
and the address space used for each setting. Figure C-4a shows how the base
I/O address was calculated from the switch positions.
Figure C-4. Base I/O Address Switch Settings for GPIB-PCIIA Mode
(Continues)
Push this side down (off) for logic 1
Push this side down (on) for logic 0
Addresses Used
02E1
12E1
82E1
92E1
06E1
16E1
86E1
96E1
0AE1
1AE1
8AE1
9AE1
0EE1
1EE1
8EE1
9EE1
a. Switch Set to Base
I/O Address hex 2E1
A14
A13
U2
0
1
0
0
0
0
0
0
1
0
1
1
1
0
0
0
0
1
Binary Hex
0
2
E
1
= not used to select the base I/O address
Key
OFF
67
89
5
4
3
2
1
