Purpose
Our Applications Engineers recommend that you allow
Windows 95 to configure Communications (COM) Port, Interrupt Request (IRQ)
as well as Input Output (I/O) settings. However, you may find this information
useful if you are using software that was designed previous to the release
of Windows 95 or whenever you determine that you must configure your settings.
Windows 95 provides a default configuration for each
COM port, as well as additional Basic Configurations that allow you to
change the interrupt request (IRQ) settings used by your Communications
(COM) port. You cannot change the input output (I/O) settings.
The tables below provide you with the settings associated
with each Basic Configuration.
Basic Configuration |
I/O |
COM Port |
IRQ Setting |
0000 |
03F8-03FF |
1 |
4 |
0001 |
02F8-02FF |
2 |
3 |
0002 |
03E8-03EF |
3 |
4 |
0003 |
02E8-02EF |
4 |
3 |
For Basic Configurations 0004 to 0007, you may change
the IRQ settings.
Basic Configuration |
I/O |
COM Port |
IRQ Setting |
0004 |
03F8-03FF |
1 |
manually configurable |
0005 |
02F8-02FF |
2 |
manually configurable |
0006 |
03E8-03EF |
3 |
manually configurable |
0007 |
02E8-02EF |
4 |
manually configurable |
Basic Configurations 0004-0007 allow for manually
configurable IRQ settings. Our Applications Engineers suggest that you
allow Windows 95 to set these. Windows 95 tends to choose settings that
may be higher than older, 16-bit oriented software may recognize. So,
after allowing Windows 95 to set them, try a lower setting such as 3 if
you have further performance problems. You can change the IRQ setting
by highlighting IRQ and clicking on "Change Setting". (See Below)
Follow these steps to modify your modem IRQ settings.
- Select Control Panel and double click System.
- Choose the Device Manager tab and set to View
devices by type.
- Click Modem and then click your PC Card.
- Click Properties button and choose Resources tab.
- Remove the check mark from Use automatic settings.
- Refer to the tables above to choose a configuration.
- In the Resource Settings box click on Interrupt
Request and then click on Change Setting.
- Change Value, make sure there are no conflicts,
and click on OK.
- Restart windows.
|