
TOP MICROSYSTEMS, INC.

TOP/ARC-10 COAX STAR

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star
Wiring Type   RG62A/U 93ohm coaxial
Boot ROM      Available

[Image]

                               NODE ADDRESS

  Node   SW2/1    SW2/2   SW2/3   SW2/4    SW2/5   SW2/6    SW2/7   SW2/8

   0       -       -        -       -       -        -       -        -

   1      Off      On      On      On       On      On       On      On

   2      On      Off      On      On       On      On       On      On

   3      Off     Off      On      On       On      On       On      On

   4      On       On      Off     On       On      On       On      On

  251     Off     Off      On      Off     Off      Off     Off      Off

  252     On       On      Off     Off     Off      Off     Off      Off

  253     Off      On      Off     Off     Off      Off     Off      Off

  254     On      Off      Off     Off     Off      Off     Off      Off

  255     Off     Off      Off     Off     Off      Off     Off      Off

  Note:Node address 0 is used for messaging between nodes and must not be
  used.

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

            CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS

  Cable Length
                    Response
                      Time
                                   Reconfiguration
                                        Time
                                                         JP1
                                                                   JP2

  
       < 20,000
        feet
                     74.7s
                                       840ms
                                                        Open
                                                                   Open


       > 20,000
        feet
                     283.4s
                                       1680ms
                                                       Closed
                                                                   Open


       > 20,000
        feet
                     561.8s
                                       1680ms
                                                        Open
                                                                  Closed


       > 20,000
        feet
                    1118.6s
                                       1680ms
                                                       Closed
                                                                  Closed

  Note: All NICs on the network must have this option set the same.

                                 BOOT ROM

                 Setting                                JP3

                  Disabled                             Open

                   Enabled                             Closed

  Note:A 2732 or 2764 boot ROM may be used in the boot ROM socket. If a
  2732 is used, the chip must be

                             INTERRUPT REQUEST

    IRQ
                 JP4
                             JP5
                                          JP6
                                                      JP7
                                                                   JP8

  
        2
               Closed
                             Open
                                         Open
                                                      Open
                                                                  Open


        3
                Open
                            Closed
                                         Open
                                                      Open
                                                                  Open


        4
                Open
                             Open
                                        Closed
                                                      Open
                                                                  Open


        5
                Open
                             Open
                                         Open
                                                     Closed
                                                                  Open


        7
                Open
                             Open
                                         Open
                                                      Open
                                                                 Closed

                             I/O BASE ADDRESS

         Address              SW1/1            SW1/2            SW1/3

          260-26Fh              On               On              On

          290-29Fh              On               On              Off

         2E0-2EFh              On              Off              On

          2F0-2FFh              On              Off              Off

          300-30Fh             Off               On              On

          350-35Fh             Off               On              Off

          380-38Fh             Off              Off              On

          3E0-3EFh             Off              Off              Off

                BASE MEMORY ADDRESS &AMP; BOOT ROM ADDRESS

  Base Address
                 Boot ROM
                             SW1/4
                                      SW1/5
                                                SW1/6
                                                         SW1/7
                                                                   SW1/8


       C0000h
                  C2000h
                              On
                                        On
                                                 On
                                                           On
                                                                    On


       C0800h
                  C2000h
                              On
                                        On
                                                 On
                                                           On
                                                                    Off


       C1000h
                  C2000h
                              On
                                        On
                                                 On
                                                          Off
                                                                    On


       C1800h
                  C2000h
                              On
                                        On
                                                 On
                                                          Off
                                                                    Off


       C4000h
                  C6000h
                              On
                                        On
                                                 Off
                                                           On
                                                                    On


       C4800h
                  C6000h
                              On
                                        On
                                                 Off
                                                           On
                                                                    Off


       C5000h
                  C6000h
                              On
                                        On
                                                 Off
                                                          Off
                                                                    On


       C5800h
                  C6000h
                              On
                                        On
                                                 Off
                                                          Off
                                                                    Off


       CC000h
                  CE000h
                              On
                                       Off
                                                 On
                                                           On
                                                                    On


       CC800h
                  CE000h
                              On
                                       Off
                                                 On
                                                           On
                                                                    Off


       CD000h
                  CE000h
                              On
                                       Off
                                                 On
                                                          Off
                                                                    On


       CD800h
                  CE000h
                              On
                                       Off
                                                 On
                                                          Off
                                                                    Off

  
       D0000h
                  D2000h
                              On
                                       Off
                                                 Off
                                                           On
                                                                    On


       D0800h
                  D2000h
                              On
                                       Off
                                                 Off
                                                           On
                                                                    Off


       D1000h
                  D2000h
                              On
                                       Off
                                                 Off
                                                          Off
                                                                    On


       D1800h
                  D2000h
                              On
                                       Off
                                                 Off
                                                          Off
                                                                    Off


       D4000h
                  D6000h
                              Off
                                        On
                                                 On
                                                           On
                                                                    On


       D4800h
                  D6000h
                              Off
                                        On
                                                 On
                                                           On
                                                                    Off


       D5000h
                  D6000h
                              Off
                                        On
                                                 On
                                                          Off
                                                                    On


       D5800h
                  D6000h
                              Off
                                        On
                                                 On
                                                          Off
                                                                    Off


       D8000h
                  DA000h
                              Off
                                        On
                                                 Off
                                                           On
                                                                    On


       D8800h
                  DA000h
                              Off
                                        On
                                                 Off
                                                           On
                                                                    Off


       D9000h
                  DA000h
                              Off
                                        On
                                                 Off
                                                          Off
                                                                    On


       D9800h
                  DA000h
                              Off
                                        On
                                                 Off
                                                          Off
                                                                    Off


       DC000h
                  DE000h
                              Off
                                       Off
                                                 On
                                                           On
                                                                    On


       DC800h
                  DE000h
                              Off
                                       Off
                                                 On
                                                           On
                                                                    Off


       DD000h
                  DE000h
                              Off
                                       Off
                                                 On
                                                          Off
                                                                    On


       DD800h
                  DE000h
                              Off
                                       Off
                                                 On
                                                          Off
                                                                    Off


       E0000h
                  E2000h
                              Off
                                       Off
                                                 Off
                                                           On
                                                                    On


       E0800h
                  E2000h
                              Off
                                       Off
                                                 Off
                                                           On
                                                                    Off


       E1000h
                  E2000h
                              Off
                                       Off
                                                 Off
                                                          Off
                                                                    On


       E1800h
                  E2000h
                              Off
                                       Off
                                                 Off
                                                          Off
                                                                    Off

