ORCHID TECHNOLOGY

PCNET (REV. D)

NIC Type              Unidentified
Network Transfer Rate Unidentified
Data Bus              8-bit ISA
Topology              Linear Bus
Wiring Type           RG-11A/U 75ohm coaxial

                      RG-59B/U 75ohm coaxial
Boot ROM              Available

[Image]

                                CONNECTIONS

               Function                               Label

  RG-11A/U or RG-59B/U 75ohm coaxial                   CN1
  connector

                        USER CONFIGURABLE SETTINGS

                  Setting                     Label          Position

  Tri-state disabled                           JP4          Pins 2 & 3
                                                              closed

  Tri-state enabled                            JP4          Pins 1 & 2
                                                              closed

                                 INTERRUPT

               Setting                                JP1

                IRQ2                          Pins 9 & 10 closed

                IRQ3                           Pins 7 & 8 closed

                IRQ4                           Pins 4 & 7 closed

                IRQ5                           Pins 6 & 7 closed

            Note:The settings for IRQ4 and IRQ5 may only be set with a
            wire-wrapping tool.

                          DMA CHANNEL

            Setting                           JP1

              DMA1               Pins 11 & 12, 13 & 14 closed

              DMA3               Pins 15 & 16, 17 & 18 closed

                   BASE I/O ADDRESS

  Setting    JP3/A      JP3/B      JP3/C      JP3/D

   280h       Open      Closed     Open      Closed

   290h      Closed      Open      Open      Closed

   380h       Open      Closed    Closed      Open

   390h      Closed      Open     Closed      Open

                          BOOT ROM ADDRESS

  Setting      JP2/A      JP2/B       JP2/C       JP2/D      JP2/E

   D0000h     Closed       Open       Open        Open       Open

   D2000h      Open       Closed      Open        Open       Open

   D4000h      Open        Open      Closed       Open       Open

   D6000h      Open        Open       Open       Closed      Open

  Disabled     Open        Open       Open        Open      Closed

                               NODE ADDRESS

  Setting   SW1/1   SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

    1       Off     Off     Off     Off     Off     Off     Off      On

    2       Off     Off     Off     Off     Off     Off      On      Off

    3       Off     Off     Off     Off     Off     Off      On      On

    4       Off     Off     Off     Off     Off      On     Off      Off

    5       Off     Off     Off     Off     Off      On     Off      On

   251       On      On      On      On      On     Off      On      On

   252       On      On      On      On      On      On     Off      Off

   253       On      On      On      On      On      On     Off      On

   254       On      On      On      On      On      On      On      Off

   255       On      On      On      On      On      On      On      On

            Note: A total of 255 node address settings are available. The
            switches are a binary representation of the decimal node
            addresses. SW1/1 is the Most Significant Bit and switch SW1/8
            is the Least Significant Bit. The switches have the following
            decimal values: SW1/1=128, SW1/2=64, SW1/3=32, SW1/4=16,
            SW1/5=8, SW1/6=4, SW1/7=2, SW1/8=1. Turn off the switches and
            add the values of the switches that are off to obtain the
            correct node ID. (Off=0, On=1)

            Node address 0 is reserved and should not be used.