3Com Corporation
              EtherDisk Diskette for the EtherLink 16 Adapters
                                       
                            System Resources



 The EtherLink 16 adapter uses three system resources:
 
      -  I/O address range
      -  Interrupt level
      -  Memory address range
 
 The adapter's options are factory-set with the following settings:
 
      -  I/O base address         300
      -  Interrupt level          3
      -  Memory base address      D0000
 
 Before you install the adapter, make sure that these settings do not conflict
 with similar settings on other peripherals.
 
 Listed below are commonly used peripherals and the adapter option settings
 they might conflict with.  If any of these peripherals are installed in your
 computer, check which resources they are using and make sure that the 
 EtherLink 16 options are not set to use the same resources.  Other 
 peripherals not mentioned in these lists may also cause conflicts.
 
 
 NOTE:  The codes in parentheses following a peripheral name indicate that 
        the information applies only to those types of computers.
 
        PC    --  IBM PC
        XT    --  IBM PC/XT
        AT    --  IBM Personal Computer AT
        PS/2  --  IBM Personal System/2 models containing the Industry
                  Standard Architecture (ISA) bus
 
 
 I/O Base Address
 ----------------
 
 COM4: - fourth serial port              2E0
 GPIB adapter                            2E0
 Data acquisition adapter                2E0
 Prototype board                         300
 
 
 Interrupt Level
 ---------------
 
 Reserved (PC)                           2
 Redirected from level 9 (XT,AT)         2
 EGA or VGA video adapter                2
 Video (PS/2)                            2
 ASYNC adapter                           3,4
 SDLC adapter                            3,4
 BSC adapter                             3,4
 Cluster (PC,AT)                         3
 COM2: - second serial port (XT,AT)      3
 PC network adapter                      3
 COM1: - first serial port (XT,AT,PS/2)  4
 Hard disk controller (PC,XT,PS/2)       5
 LPT2: - second parallel port (XT,AT)    5
 
 
 Memory Base Address
 -------------------
 
 Hard disk controller ROM (PC)           C8000
 Hard disk controller ROM (XT)           C8000,CC000
 EGA and VGA video ROM                   C8000,CC000
 Expansion RAM                           D8000,DC000
 
 
 
 
                        (%VER  System Resources v3.4a)