ABC COMPUTER COMPANY, LTD.

ETHERNET A3251

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

              AUI transceiver via DB-15 port
Boot ROM      Available

[Image]

                             INTERRUPT REQUEST

      IRQ           JP6            JP7            JP8            JP9

         2         Closed         Open           Open           Open

  »      3          Open         Closed          Open           Open

         4          Open          Open          Closed          Open

         5          Open          Open           Open          Closed

                                 BOOT ROM

                  Type                                  JP1

  »                Enabled                       Pins 1 & 2 Closed

                  Disabled                       Pins 2 & 3 Closed

                                CABLE TYPE

              Type                JP10 - JP13 & JP15   JP16 - JP18 & JP20
                                                             - JP21

  »    RG-58A/U 50ohm coaxial          Closed                 Open

         AUI transceiver via            Open                 Closed
             DB-15 port

                             I/O BASE ADDRESS

    I/O Address         SW1/1        SW1/2         SW1/3         SW1/4

         280-29F         On            On           On            On

  »      2A0-2BF         On           Off           On            On

         2C0-2DF         On            On           Off           On

         2E0-2FF         On           Off           Off           On

         300-31F         On            On           On            Off

         320-33F         On           Off           On            Off

         340-35F         On            On           Off           Off

         360-37F         On           Off           Off           Off

                            BASE MEMORY ADDRESS

          Base Address                  SW1/5                SW1/6

             C0000-C3FFF                 On                    On

             C4000-C7FFF                 Off                   On

             C8000-CBFFF                 On                   Off

  »         CC000- CFFFF                 Off                  Off

                            MISCELLANEOUS NOTES

  Different drivers must be used for the National & the Fujitsu chipset
  cards, & are not interchangeable. Fujitsu adapters may be used for
  either 8 or 16 bit Fujitsu cards. While the National chipset cards
  require a different driver for an 8 or 16 bit card.