
STANDARD MICROSYSTEMS CORPORATION

ARCNET PC650

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

                                 BOOT ROM

                 Setting                                JP2

                  Disabled                             Open

                   Enabled                             Closed

                         INTERRUPT REQUEST

   IRQ       JP3A      JP3B     JP3C      JP3D     JP3E      JP3F

    3       Closed     Open     Open      Open     Open      Open

    4        Open     Closed    Open      Open     Open      Open

    5        Open      Open     Closed    Open     Open      Open

    7        Open      Open     Open     Closed    Open      Open

    9        Open      Open     Open      Open     Closed    Open

    10       Open      Open     Open      Open     Open      Closed

                             I/O BASE ADDRESS

       Address              SW1/1             SW1/2            SW1/3

          300h              Off                On               On

           260h               On                On               On

           290h               On                On              Off

           2E0h               On               Off               On

           2F0h               On               Off              Off

           350h              Off                On              Off

           380h              Off               Off               On

           3E0h              Off               Off              Off

                             DIAGNOSTIC LED(S)

    LED         Color         Status                 Condition

    LED1         Red            On         Card is being accessed by host
                                                      computer

    LED1         Red            Off         Card is not being accessed by
                                                   host computer

    LED2        Green           On          Data is being transmitted or
                                                      received

    LED2        Green           Off         Data is not being transmitted
                                                    or received

    LED2        Green        blinking         Network is reconfiguring

                    BASE MEMORY &AMP; BOOT ROM ADDRESS

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

   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

