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Using the ISA Configuration Utility 3-7
Figure 3-9. Specify I/O Port Dialog Box
8. When you have finished selecting resources for
the unlisted card, click OK in the Configure
Unlisted Card dialog box.
A message box appears, notifying you either that the
card is using its default settings or that it cannot use
its default settings and must be reconfigured.
9. Click OK. If the card must be reconfigured,
record the resource settings recommended by the
ICU. Click Close to accept the resource settings
currently displayed.
10. If you had to assign a disallowed resource value to
the card in steps 7, 8, and 9, click each of the
other cards, and then click View until you find
another card using a resource value that is
allowed for the unlisted card. Reassign the
resource setting for this other card using the pro-
cedure in the next section, “Modifying a Card.”
Then modify the resource settings for the unlisted
card so that it uses an allowable value.
NOTE: After modifying the system configuration, you
must turn the system off to install, remove, or change
jumper settings on the non-Plug and Play ISA expansion
cards to match the settings you selected in the ICU.
M
odifying a Card
Modifying a card allows you to change the system
resources used by a card. This feature is helpful when
you want to add a card that requires resources already in
use by other cards or devices in your computer. You can
allocate different resources to the cards currently in your
computer to free the resources necessary for the card you
want to install.
You can also use this feature to force Plug and Play or
PCI expansion cards to use specific resource values. This
procedure is called locking a card. You should lock a card
only if it uses static device drivers. See “Locking and
Unlocking Cards” found later in this chapter for more
information.
NOTE: You cannot modify the resources of a Plug and
Play or PCI expansion card. You can only view the
resources currently assigned and lock or unlock them.
To modify the resource settings for a listed or unlisted
card, complete the following steps:
1. Start the ICU as described in “Starting the ICU”
found earlier in this chapter.
2. Select the card from the list of installed cards in
the ICU window, and choose Modify Card from
the Configure menu or click Modify.
If the Card Configuration dialog box appears, the
selected card is listed (it has a configuration file in
the ICU database). Continue with step 3.
If the Configure Unlisted Card dialog box appears,
the card is unlisted (it does not have a configuration
file). Proceed to step 5.
NOTE: When you modify an unlisted card, the ICU
cannot show you the valid resources for the card.
Therefore, you must have documentation from the
card manufacturer that describes the resources and
resource settings that the card can use.
3. Follow steps 7 through 9 in “Adding a Listed
Card” found earlier in this chapter. Then con-
tinue with step 4 of this procedure.
4. Click OK to complete the card modifications and
return to the ICU window.
You have completed this procedure; do not proceed
to step 5.
5. To add, modify, or remove a resource value, select
the box beneath the resource to be assigned, and
then click Add, Modify, or Remove, respectively.
For example, if you click the box beneath IRQ, the
Add, Modify, and Remove buttons change to Add
Interrupt, Modify Interrupt, and Remove Interrupt.
When you click one of these buttons, a smaller Spec-
ify list box (in this case, Specify Interrupt) appears.
If you are providing a value for the IRQ or DMA
resource, click the down arrow beneath Available
Resources. Click the value you want to assign to the