Linksys PCMLM56 User Manual page 10

Software
Also known as an interrupt, an IRQ is a particular slice
of your computer processor's time. Most computers
have 13 possible interrupts for you to use, numbered 3
through 15 in sequential order. You must choose an
interrupt not already in use by another device.
An I/O base address is the input/output area of your
computer's Input/Output range that the 10/100 + 56K
Modem PC Card will use for transferring data between
the modem and the PC. The I/O value you assign to the
card must not be in use by any other devices.
In most cases, a computer's COM Ports, IRQ numbers,
and I/O addresses are paired together to make determin-
ing the values to use easier.
Plug-and-play operating systems like Windows 95 and
98 will usually assign available COM, I/O, and IRQ val-
ues to the 10/100 + 56K Modem PC Card automatically,
making the card's installation quick and easy.
If you aren't using Windows 95 or 98, you will need to
choose COM, IRQ, and I/O values for the 10/100 +
56K Modem PC Card to use. This can usually be
accomplished by checking your Windows Control
Panel, or if you are using MS-DOS, by running DOS's
MSD program. If you're not sure which COM, IRQ, or
I/O values to use, start by trying COM2. If it doesn't
work, try COM3.
In Windows NT, you can use WINMSD to find out what
settings are assigned to the modem portion of the card.
Your COM port settings may have to be manually con-
figured.
Please note that if you are using any specialized dial-up
communications software, such as software from
America Online (AOL), you must set the EtherFast
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