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ISA I/O Card User’s Guide
6 Pre-Hardware Installation Checklist
do not have an available IRQ, you will need to disable
one of your system’s devices in order to free up an IRQ.
Verification of Available I/O Address Resources
Each port on your ISA I/O Card must be assigned a unique
I/O Address. It is important that the addresses do not conflict
with addresses already assigned to devices on your com-
puter. Overlapping address assignments can cause device
conflicts. Checking your current resource assignments as
well as any documentation that came with your computer
and/or peripherals will help insure that you do not run into
any problems. If you’re not sure about which I/O addresses
to assign, use the default settings charted in the
Configura-
tion section of your Hardware Guide.
Software Verification of Available I/O Address Re-
sources
Follow the instructions below to verify your current I/O ad-
dresses.
1. Click the Windows Start button. Go to Settings , then
Control Panel .
2. From the Control Panel , double click the System icon.
3. A System Properties window will appear. From the De-
vice Manager tab, highlight “Computer,” and then click
the Properties button.
4. A Computer Properties window will appear. By default
a list of already assigned IRQs will be displayed. Click
the “Input/output (I/O)” radio button. A list of already as-
signed I/O Addresses will be displayed. Of these
addresses, the I/O Addresses not listed in the
Com-
puter Properties window are the available I/O
Addresses you may assign. Please check your ISA
Hardware Guide to verify that the I/O Addresses listed
on the Hardware Guide are available on your computer,
i.e., not listed in the Computer Properties window.