3COM CORPORATION

ETHERLINK II/16 (3C503)

NIC Type      Ethernet
Transfer Rate 10Mbps
Data Bus      8/16-bit ISA
Topology      Linear Bus
Wiring Type   RG-58A/U 50ohm coaxial

              AUI transceiver via DB-15 port
Boot ROM      Available

[Image]

                                 I/O BASE ADDRESS

  Address    JP1A     JP1B     JP1C     JP1D    JP1E     JP1F     JP1G     JP1H

      250h   Open     Open     Open     Open    Closed   Open     Open     Open

      280h   Open     Open     Open     Open    Open     Closed   Open     Open

      2A0h   Open     Open     Open     Open    Open     Open     Closed   Open

      2E0h   Open     Open     Open     Open    Open     Open     Open     Closed

  »   300h  Closed    Open     Open     Open    Open     Open     Open     Open

      310h   Open    Closed    Open     Open    Open     Open     Open     Open

      330h   Open     Open    Closed    Open    Open     Open     Open     Open

      350h   Open     Open     Open    Closed   Open     Open     Open     Open

                             BOOT ROM ADDRESS

     Address         JP3A       JP3B        JP3C       JP3D        JP3E

  »    Disabled     Closed      Open        Open       Open        Open

        C8000h       Open      Closed       Open       Open        Open

        CC000h       Open       Open       Closed      Open        Open

        D8000h       Open       Open        Open      Closed       Open

        DC000h       Open       Open        Open       Open       Closed

                               DATA BUS SIZE

                Setting                                JP5

  »                16-bit                       Pins 2 & 3 closed

                   8-bit                        Pins 1 & 2 closed