MADGE NETWORKS, LTD.

SMART 16/4 FIBER AT RINGNODE

NIC Type         Token Ring
Transfer Rate    4/16Mbps
Data Bus         16-bit ISA
Topology         Ring
Wiring Type      62.5/125m m multimode graded index optical
                 fiber
Boot ROM         Available

[Image]

                              ADDRESS SELECT

     I/O Address           Base Memory          SW2/1           SW2/2
                            Address

  »    0A20 - 0A2Fh      CC000 - CDFFFh          On              On

       1A20 - 1A2Fh      DC000 - DFFFFh          Off             On

       2A20 - 2A2Fh      CE000 - CFFFFh          On              Off

       3A20 - 3A2Fh      DE000 - DFFFFh          Off             Off

                        AT BUS TIMING COMPATIBILITY

                 Setting                                SW2/6

  »                 Normal                               On

                   Alternate                             Off

                                 BOOT ROM

                 Setting                               SW2/3

  »                Disabled                             Off

                    Enabled                              On

                              BUS MASTER DMA

                 Setting                               SW2/4

  »                 Enabled                              On

                   Disabled                             Off

                               CLOCK SOURCE

                  Setting                               SW2/7

  »               Asynchronous                           Off

                   Synchronous                            On

                             CONCENTRATOR TYPE

                Setting                                 LB1

  »                802.5J                 [Image]

                 Local wrap               [Image]

       Note: Concentrator type is determined by placing a link block over
       the LB1 jumper block. The block has an arrow printed on the front
       and should resemble the diagram shown above.

                            DATA TRANSFER RATE

                  Speed                                SW2/8

  »                 16Mbps                              Off

                    4Mbps                               On

                             DMA CONFIGURATION

                 DMA                                  SW3

  »                 5                             Position 3

                    1                             Position 1

                    3                             Position 2

                    6                             Position 4

  Note: Switch 3 is a four-position slide switch. Each position should be
  silk-screened on the switch itself.

                               8/16 BIT MODE

                 Setting                               SW2/5

  »              8/16-bit mode                           On

               Force 8-bit mode                         Off

                             INTERRUPT SELECT

                  IRQ                                  SW1

  »                 IRQ3                            Position 7

                   IR/FONT                          Position 8

                    IRQ5                            Position 6

                    IRQ7                            Position 5

                    IRQ10                           Position 4

                    IRQ11                           Position 3

                    IRQ12                           Position 2

                    IRQ15                           Position 1

  Note: Switch 1 is an eight-position slide switch. Each position should
  be silk-screened on the switch itself.

                     CONNECTIONS

          Purpose                   Location

  Fiber-optic transmitter              Tx

   Fiber-optic receiver                Rx