
CNET TECHNOLOGY, INC.

CN190ST

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      16-bit ISA
Topology      Star
Wiring Type   Unshielded twisted pair

              RG-62A/U 93ohm coaxial
Boot ROM      Available

[Image]

                               NODE ADDRESS

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

   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)

                     RESPONSE/RECONFIGURATION TIMEOUTS

  Response Time     Reconfiguration Time        JP1              JP2

      74.7s               840ms                Open            Open

     283.4s               1680ms              Closed           Open

     561.8s               1680ms               Open           Closed

     1118.6s              1680ms              Closed          Closed

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

                                            INTERRUPT REQUEST

   IRQ     JP3      JP4      JP5      JP6      JP7      JP9     JP10     JP11     JP12     JP14     JP15

     3   Closed    Open     Open     Open    Open     Open     Open     Open     Open     Open     Open

      4    Open    Closed    Open     Open    Open     Open     Open     Open     Open     Open     Open

      5    Open     Open    Closed    Open    Open     Open     Open     Open     Open     Open     Open

      6    Open     Open     Open    Closed   Open     Open     Open     Open     Open     Open     Open

      7    Open     Open     Open     Open    Closed   Open     Open     Open     Open     Open     Open

      9    Open     Open     Open     Open    Open     Closed   Open     Open     Open     Open     Open

      10   Open     Open     Open     Open    Open     Open     Closed   Open     Open     Open     Open

      11   Open     Open     Open     Open    Open     Open     Open     Closed   Open     Open     Open

      12   Open     Open     Open     Open    Open     Open     Open     Open    Closed    Open     Open

      14   Open     Open     Open     Open    Open     Open     Open     Open     Open    Closed    Open

      15   Open     Open     Open     Open    Open     Open     Open     Open     Open     Open    Closed

                                CABLE TYPE

                   Type                             JP16 & JP17

           Unshielded twisted pair              Pins 1 & 2 Closed

            RG-62A/U 93ohm coaxial               Pins 2 & 3 Closed

                   I/O BASE ADDRESS

  Address    SW2/1      SW2/2      SW2/3      SW2/4

   200h        On         On        On         On

   220h        On         On        On         Off

   240h        On         On        Off        On

   260h        On         On        Off        Off

   280h        On        Off        On         On

   2A0h        On        Off        On         Off

   2C0h        On        Off        Off        On

   2E0h        On        Off        Off        Off

   300h       Off         On        On         On

   320h       Off         On        On         Off

   340h       Off         On        Off        On

   360h       Off         On        Off        Off

   380h       Off        Off        On         On

   3A0h       Off        Off        On         Off

   3C0h       Off        Off        Off        On

   3E0h       Off        Off        Off        Off

                BASE MEMORY ADDRESS &AMP; BOOT ROM ADDRESS

  Base Address       Boot ROM      SW2/5     SW2/6      SW2/7      SW2/8
                     Address

        C0000h       C4000h         Off        On        On         On

        C8000h       CC000h         Off        On        On         Off

       D0000h       D4000h         Off        On        Off        On

        D8000h       DC000h         Off        On        Off        Off

        E0000h       E4000h         Off       Off        On         On

                             DIAGNOSTIC LED(S)

       LED               Status                     Condition

       LED1                On              Data is being transmitted or
                                                    received

       LED1               Off            Data is not being transmitted or
                                                    received

