Impulse 7402 - Manual (Page 18)

Appendix A - Troubleshooting
Sealevel Systems ULTRA COMM+422.PCI Page 15
PCI COM NUMBER SELECTION IN WINDOWS 95/98
When installing a multi-port PCI card in Windows 95 the default starting COM:
number assigned to the first port will be COM:5 if no COM:5 exists. If there is a
COM: 5, 6, etc., the next available COM: number will be assigned to the first
port with all additional ports following in ascending order.
To change the first two ports so that Windows assigns them COM: 3 and COM:
4 port enumeration double click the Systems icon in control panel or right click
on My Computer and choose properties which will bring you to System
Properties. Choose the Device Manager tab and double click on the Multi-
Function Adapter heading. This will show all the information concerning the
Sealevel adapter. Choose the Resources tab, which will show all resources
assigned to the multi-function adapter. Uncheck the Use Automatic Settings box.
Notice that with a two port card there will be three input/output, (I/O), ranges
listed. With a four port card there will be five input/output, (I/O), ranges listed.
The first I/O range is for the PCI bus and should not be changed. The second and
third I/O ranges are the ones that need to be changed in order to have those ports
enumerated as COM: 3 and COM: 4. Double click on the second I/O range
which will allow you to change the address. Highlight the entire I/O range and
type: 03e8–03ef for COM: 3. Click OK. Windows will inform you that you have
made modifications that may affect other devices. Click OK. Next double click
on the third I/O range. Highlight the entire I/O range and type: 02e8–02ef for
COM: 4. Again Windows will inform you that you have made modifications
that may affect other devices. Click OK.
Following these steps will change the COM: number assignments on the first two
ports to
COM: 3 and 4.