Dell OptiPlex E1 - Manual (Page 61)

Using the ISA Configuration Utility 3-11
If you are providing values for the input/output (I/O) port or memory resources,
you must enter the starting and ending addresses in hexadecimal format using
the two fields provided by the Specify Memory or Specify I/O Port dialog box (see
Figure 3-9). Click each box in succession to enter the beginning and ending
addresses, and then click OK to complete the selection.
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A message box appears, notifying you either that the card is using its default set-
tings or that it cannot use its default settings and must be reconfigured.
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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.
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Modifying a card allows you to change the system resources used by a card. This fea-
ture 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 spe-
cific 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.