HP 98568A Installation Instruction page 112

HP 98622A GPIO Interface
l. Play It Safe.
a. Turn your computer off and unplug the power cord.
b. Remove the GPIO Interface from its envelope, being careful to handle
the card only by its edges and metal end plate. The card may be easily
damaged by electrostatic discharge (static zap).
c. Place the card on the envelope.
2. Set the Select Code.
SKIP?
If this is the first (or only) GPIO Interface you are installing,
you can skip to step 3. The select code is preset to 12 and need
not be changed.
a. Find the set of five switches labeled U38 on the GPIO Interface
(Figure 5-6). This group of switches determines the select code.
b. Set these switches to one of the four select codes given in Figure 5-7,
unless you have used them elsewhere. Refer to the installation note that
came with the interface if you need additional switch settings.
:~ :~
Select Code 23 Select Code 24 Select Code 26 Select Code 30
Figure 5-7.
3. Set Other Configuration Switches.
a. Set Interrupt Level switch, labeled U39 on the card, to interrupt level 3
(00) as shown in Figure 5-6 (interrupt level 3 is required for HP-UX). If
your application requires a different setting, refer to Table 5-3.
5-16 Adding Interface Cards