IMC NETWORK CORPORATION

PCNIC

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

              RG--62A/U 93ohm coaxial

              75ohm coaxial

              AUI transceiver via DB-15 port
Boot ROM      Available

[Image]

                                CABLE TYPE

           Type                 S1             S2               S3

  »     RG--58A/U 50ohm        Open         Installed       50ohm (P/N
            coaxial                                         90-39050)

        RG--62A/U 93ohm        Open         Installed       93ohm (P/N
            coaxial                                         90-39093)

         75ohm coaxial         Open         Installed       75ohm (P/N
                                                            90-39075)

        AUI transceiver      Installed        Open             N/A
        via DB-15 port

      Notes:S1 and S2 are sockets for a transformer chip while S3 is a
      socket for a Cabling Option Resistor Kit (CORK). To choose a cable
      type insert the appropriate chips into the appropriate sockets. All
      cards on the network segment must use the same type of coaxial
      cable.

                            COMPATIBILITY MODE

                Setting                                 JP1

  »               Disabled                       Pins 1 & 2 closed

                   Enabled                       PIns 2 & 3 closed

  Note:On some systems the data bus timing is not truly IBM PC/AT
  compatible. If the card will not initialize, enabling compatibility
  mode may allow the card to operate properly.

                             BOOT ROM ADDRESS

         Address                   SW1/1                   SW1/2

          C0000h                    Off                     Off

          C8000h                     On                     Off

          D0000h                    Off                      On

          D8000h                    Off                     Off

  Note:A boot ROM kit consists of a PEEL chip and a boot ROM chip. Both
  chips must be installed.

                    I/O BASE ADDRESS (LAST TWO DIGITS)

   Address       SW1/3       SW3/4       SW3/5       SW3/6        SW3/7

  x00 - x07        On          On          On          On          On

  x08 - x0F       Off          On          On          On          On

  x10 - x07        On         Off          On          On          On

  x18 - x1Fh      Off         Off          On          On          On

  x20 - x07        On          On         Off          On          On

  x28 - x2Fh      Off          On         Off          On          On

  x30 - x07        On         Off         Off          On          On

  x38 - x3Fh      Off         Off         Off          On          On

  x40 - x47h       On          On          On         Off          On

  x40 - x4Fh      Off          On          On         Off          On

  x50 - x57h       On         Off          On         Off          On

  x50 - x5Fh      Off         Off          On         Off          On

  x60 - x67h       On          On         Off         Off          On

  x60 - x6Fh      Off          On         Off         Off          On

  x70 - x77h       On         Off         Off         Off          On

  x70 - x7Fh      Off         Off         Off         Off          On

  x80 - x87h       On          On          On          On          Off

  x88 - x8Fh      Off          On          On          On          Off

  x90 - x97h       On         Off          On          On          Off

  x90 - x9Fh      Off         Off          On          On          Off

  xA0 - xA7h       On          On         Off          On          Off

  xA0 - xAFh      Off          On         Off          On          Off

  xB0 - xB7h       On         Off         Off          On          Off

  xB0 - xBFh      Off         Off         Off          On          Off

  xC0 - xC7h       On          On          On         Off          Off

  xC0 - xCFh      Off          On          On         Off          Off

  xD0 - xD7h       On         Off          On         Off          Off

  xD0 - xDFh      Off         Off          On         Off          Off

  xE0 - xE7h       On          On         Off         Off          Off

  xE0 - xEFh      Off          On         Off         Off          Off

  xF0 - xF7h       On         Off         Off         Off          Off

  xF0 - xFFh      Off         Off         Off         Off          Off

  Note:The two digits selected here must be added to the digit selected
  in the following table.

  I/O BASE ADDRESS (FIRST DIGIT)

     Address           SW1/8

   2xx - 2xxh            On

   3xx - 3xxh           Off