List of Hardware Devices and Common I/O Base Address Conflicts

MORE INFORMATION

The I/O base address for each hardware adapter card installed on your system must be unique to avoid potential problems. Before you install your network adapter card, you should know which I/O base addresses are currently in use by existing hardware adapter cards installed in your system. I/O base addresses are typically set using jumpers on the card or using a software configuration program in EPROM.

The following list shows I/O base address ranges commonly used by hardware devices (other than network adapter cards) and what I/O base address they would conflict with.

The I/O base address list does not list all available I/O base address. In addition, some of these addresses may not be supported by your network adapter card. For more information on I/O base addresses supported by your network adapter card, consult your hardware documentation or contact the network adapter card vendor.

Potential conflicting devices and their I/O base addresses:

                                                      Potential I/O Base
   Device                              Range Used       Address Conflict
   ---------------------------------------------------------------------
   Game Controller                      200-20F               200
   Expansion unit                       210-217               200
   LPT3:                                278-27F*              260
   LCD display on Wyse 2108 PC                                280
   COM4                                 2E8-2EF               2E0
   COM2                                 2F8-2FF               2E0
   XT Hard drives                                             320
   LPT2:                                378-37F*               360
   Secondary Bi-Sync interface          380-38C               380
   Primary Bi-Sync interface            3A0-3A9               3A0
   Monochrome Display/Printer Card      3B0-3BF               3A0
   LPT1:                                3BC-3BF*               3A0
   EGA Adapter                          3C0-3CF               3C0
   CGA Display                          3D0-3DF               3C0
   COM3                                 3E8-3EF               3E0
   Floppy Controller                    3F0-3F7               3E0
   COM1-Asynchronous Communications     3F8-3FF               3E0
				

NOTE: Some video cards use I/O base address 320. If you are using I/O base address 320 for your network adapter card and are experiencing problems, try a different I/O base address.

* These addresses are for older PS/2 computers. ISA computers use the following address ranges:

     Device   Range Used
     -------------------
     LPT1:    378-37F
     LPT2:    278-27F
     LPT3:    3BC-3BF
				

The information in this article can also be found on page 20 of the SMC Elite 16 network card manual.