Diamond SupraExpress 56e Manual page 47

If there are four COM ports in the system or three COM ports and a video card based on the S3
chipset (which uses the 02E8, COM 4, address), then there is nothing you can do to avoid having
your modem configure to COM 5, except disable a COM port so your modem can reconfigure to a
lower COM port.
Problem:
Your modem does not work on COM 1.
Solution: In this situation, COM 1 has been disabled but your modem still does not work or does not work
properly. Even when you disable the port in the BIOS setup, Win95 may still assume it is a port
which wants to use the default IRQ 4 and 3F8h settings and not allowing your modem to use those
resources.
1 In Windows 95, click Start, select Settings and choose Control Panel. Double click the System
icon and select Device Manager.
2 Select Ports.
3 Select COM 1 and click on Properties.
4 Uncheck the checkbox for Original Configuration and click OK.
5 Select Start and choose Shut down. Turn off your computer.
6 Turn on your computer.
Check your changes in Device Manager. COM 1 now has a red X indicating Windows 95 does not
reserve resources for the device, leaving IRQ 4 available for your modem
Problem:
Installing multiple Plug and Play modems
Solution: You can install multiple Plug and Play modems in one computer and use the standard COM ports
1-4 and none of Windows 95 virtual COM 5-9 ports.
If you have multiple Plug and Play devices in one machine, unchecking the Use Automatic Settings
box in Device Manager by itself does not take the modem out of Automatic Settings mode. The
modem must be moved to a different basic configuration before the Use Automatic Settings will stay
unchecked. Take the modem to a higher numbered basic configuration that leaves the modem at
the same I/O range and IRQ, and then add the second modem.
The following procedure works when a computer has no Plug and Play devices and COM 2 was
disabled with a serial mouse on COM 1.
1 Install the first Plug and Play modem and boot your computer.
2 Windows 95 finds your modem and prompts for the driver from manufacturer's disk. Insert the
Plug and Play Utility disk and Windows installs the appropriate driver.
3 Click Start, select Settings and choose Control Panel. Double click the System icon and choose
Device Manager.
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