DOCUMENT:Q111019 23-SEP-1999 [win3x] TITLE :List of Hardware Devices and Common I/O Base Address Conflicts PRODUCT :Microsoft Windows 3.x Retail Product PROD/VER:WINDOWS:3.1,3.11 OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Windows for Workgroups versions 3.1, 3.11 ------------------------------------------------------------------------------- SUMMARY ======= When you install a network adapter card, sound card, or other hardware adapter, you typically have to choose an input/output (I/O) base address. If the base address you choose for your network adapter card is currently being used by another hardware adapter card, Protocol Manager may report an unsuccessful binding, or your system may stop responding (hang). This article provides a list of I/O base addresses that may already be in use on your system and what hardware devices use them. NOTE: Most network adapter cards have the default I/O base address 300. 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. Additional query words: 3.10 3.11 nic interface board boards ====================================================================== Keywords : Technology : kbAudDeveloper kbWFWSearch kbWFW310 kbWFW311 Version : WINDOWS:3.1,3.11 ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.