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ARCNET LanCard AT

TIARA COMPUTER SYSTEMS, INC.

ARCNET LanCard AT

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

16-bit ISA

Topology

Star

Linear Bus

Wiring Type

Shielded twisted pair

Unshielded twisted pair

RG-58A/U 50ohm coaxial

Boot ROM

Available

NODE ADDRESS

Node

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

0

-

-

-

-

-

-

-

-

1

Off

Off

Off

Off

Off

Off

Off

On

2

Off

Off

Off

Off

Off

Off

On

Off

3

Off

Off

Off

Off

Off

Off

On

On

4

Off

Off

Off

Off

Off

On

Off

Off

251

On

On

On

On

On

Off

On

On

252

On

On

On

On

On

On

Off

Off

253

On

On

On

On

On

On

Off

On

254

On

On

On

On

On

On

On

Off

255

On

On

On

On

On

On

On

On

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 8 is the Least Significant Bit and switch 1 is the Most Significant Bit. The switches have the following decimal values: switch 8=1, 7=2, 6=4, 5=8, 4=16, 3=32, 2=64, 1=128. Turn on the switches and add the values of the on switches to obtain the correct node address. (On=1, Off=0)

CABLE TYPE

Type

JP7 & JP8

RG-58A/U 50ohm coaxial

Pins 1 & 2 closed

 

Shielded/Unshielded twisted pair

Pins 2 & 3 closed

TOPOLOGY CONFIGURATION

Topology

JP9

Linear Bus

Open

 

Star

Closed

RIM BUFFER ADDRESS/BOOT ROM ADDRESS CONFIGURATION

Buffer

Boot ROM

JPA

JPB

JPC

JPD

JPE

 

CCOOh

CE00h

Closed

Closed

Closed

Open

Closed

D000h

D200h

Closed

Closed

Open

Open

Closed

 

D400h

D600h

Closed

Closed

Closed

Closed

Open

 

D800h

DA00h

Closed

Closed

Open

Closed

Open

 

DC00h

DE00h

Closed

Closed

Closed

Open

Open

 

E000h

E200h

Closed

Closed

Open

Open

Open

I/O BASE ADDRESS

Address

JPF

JPG

JPH

2E0h

Closed

Open

Closed

 

260h

Closed

Closed

Closed

 

290h

Open

Closed

Closed

 

2F0h

Open

Open

Closed

 

300h

Closed

Closed

Open

 

350h

Open

Closed

Open

 

380h

Closed

Open

Open

 

3E0h

Open

Open

Open

INTERRUPT REQUEST

IRQ

JPI

JPJ

JPK

JPL

JPM

JPN

JPO

JPP

JPQ

2/9

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

3

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

4

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

5

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

7

Open

Open

Open

Open

Open

Open

Open

Open

Closed

 

10

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

11

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

12

Open

Closed

Open

Open

Open

Open

Open

Open

Open

 

15

Closed

Open

Open

Open

Open

Open

Open

Open

Open

I/O OPTION CONFIGURATION

I/O CHRDY

Zero Wait State

JPR

JPS

Disabled

Disabled

Open

Open

Disabled

Enabled

Closed

Open

Enabled

Disabled

Open

Closed

Note:Zero wait state operation and I/O CHRDY signal cannot be enabled at the same time.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

L1

Red

On

Data is being received

L1

Red

Off

Data is not being received

L1

Red

Blinking

Card is reconfiguring

L2

Green

On

Data is being transmitted

L2

Green

Off

Data is not being transmitted

L2

Green

Blinking

Card is reconfiguring