ZENITH DATA SYSTEMS

LAN4TR-AT

NIC Type      Token-Ring
Transfer Rate 4Mbps
Data Bus      16-bit ISA
Topology      Ring
Wiring Type   Shielded/Unshielded twisted pair
Boot ROM      Available

[Image]

                             LLC EPROM ENABLED

                 Setting                                JP1

  »        External EPROMs disabled                    Closed

           External EPROMs enabled                      Open

  Note:The LLC EPROMs contain the Logic Link Control program. The card
  will function properly with the LLC chips

            I/O BASE ADDRESS

   Address        SW1/1        SW1/2

  A00 - A0Fh       On            On

  A20 - A2Fh       On           Off

  A40 - A4Fh       Off           On

  A60 - A6Fh       Off          Off

    INTERRUPT REQUEST

   IRQ     SW1/3   SW1/4

    3       On      On

    9       On      Off

   10      Off      On

   11      Off      Off

                           BOOT ROM ADDRESS

     Address        Boot ROM Size         SW1/5            SW1/6

  CC000 - CCFFFh         4KB               On                On

  D0000 - D3FFFh        16KB               On               Off

  D8000 - D8FFFh         4KB               Off               On

  DC000 - DFFFFh        16KB               Off              Off

          DMA CHANNEL

  Channel    SW1/7      SW1/8

   DMA0        On        On

   DMA5        On        Off

   DMA6       Off        On

   DMA7       Off        Off