DIGITAL COMMUNICATIONS ASSOCIATES, INC. (DCA)

IRMATRAC TOKEN-RING ADAPTER/CONVERTIBLE

4MBPS-ONLY RING INTERFACE MODULE (RIM)

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

              Shielded twisted pair (DB-9 port)
Boot ROM      Available

[Image]

                             I/O BASE ADDRESS

                Address                                JP1

  »             0A20 - 0A3Fh                    Pins 1 & 2 closed

                1A20 - 1A3Fh                    Pins 2 & 3 closed

                         CONNECTIONS

            Purpose                       Location

  Ring Interface Module (RIM)               CON1

[Image]

                                CABLE TYPE

                  Type                                JP2A - D

  »        Unshielded twisted pair               Pins 1 & 2 closed

       Shielded twisted pair (DB-9 port)         Pins 2 & 3 closed

               CONNECTIONS

       Purpose             Location

  Backplane Adapter          CON1

                            MISCELLANEOUS NOTES

  Although the backplane adapter can have a 4/16Mbps or 4Mbps-only Ring
  Interface Module (RIM), the 4Mbps-only RIM is diagrammed because the
  4/16Mbps RIM does not have jumpers.