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Important!
The I-modem emulates a serial interface card with a 16550 UART. Like
serial interface cards, it must be assigned a unique communications
(COM) port number and a unique interrupt request (IRQ) number.
If you are using a computer with a Plug and Play compliant BIOS and
operating system and you set the I-modem's jumpers to Plug and Play
(the default), your computer's operating system will take care of the COM
and IRQ settings for you.
Setting the COM port and IRQ yourself requires a detailed knowledge of
the settings of the other adapter cards in your computer. If other adapter
cards are set to use the same COM port or IRQ, conflicts may occur that
could result in data loss or lockups.
First, determine whether your computer has a Plug and Play ISA bus.
Check your computer's documentation to be sure. Keep these points
about Plug and Play in mind:
Your computer's operating system must support Plug and Play
(examples of those that do: OS/2 Warp, Windows 95, Windows NT),
or your computer's manufacturer must supply you with Plug and
Play software.
Your computer's Basic Input/Output System (BIOS) must support
Plug and Play.
Installing the Internal I-modem
4-3
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