Appendix C
Hardware and Software Configuration
© National Instruments Corp.
C-5
GPIB-PCII/IIA for Graphics
GPIB-PCII Mode
Switch block U2 is used to set the address for address lines A3 through A9. The
addresses are in a consecutive block of eight beginning on any multiple of 8
between 100 and 3F8 hex. For example, for the default address, 2B8 hex, the
GPIB-PCII uses the address space 2B8 through 2BF hex.
Press the side marked 1 to select a binary value of 1 for the corresponding
address bit. Press the 0 side of the switch to select a value of 0 for the
corresponding address bit.
To change the base I/O address, press each switch to the desired position, then
check each switch to make sure it is pressed down all the way.
Figure C-3 shows two possible switch settings. Each of the address selections
shows how the base I/O address was calculated from the switch positions.
