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ARCNET ADAPTER

NETWORK INTERFACE TECHNOLOGY CORPORATION

ARCNET ADAPTER

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star

Linear Bus

Wiring Type

Unshielded twisted pair

RG58A/U 50ohm coaxial

Boot ROM

Available

CABLE TYPE

Type

JP2/A

JP2/B

RG58A/U 50ohm coaxial

Open

Closed

Unshielded twisted pair

Closed

Open

I/O ADDRESS CONFIGURATION

Address Range

SW2/6

SW2/7

SW2/8

260h - 26Fh

On

On

On

290h - 29Fh

Off

On

On

2E0h - 2EFh

On

Off

On

2F0h - 2FFh

Off

Off

On

300h - 30Fh

On

On

Off

350h - 35Fh

Off

On

Off

380h - 38Fh

On

Off

Off

3E0h - 3EFh

Off

Off

Off

BASE MEMORY ADDRESS CONFIGURATION

RAM Address

PROM Address

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

C0000h - C07FFh

C2000h - C3FFFh

On

On

On

On

On

C0800h - C0FFFh

C2000h - C3FFFh

Off

On

On

On

On

C1000h - C17FFh

C2000h - C3FFFh

On

Off

On

On

On

C1800h - C1FFFh

C2000h - C3FFFh

Off

Off

On

On

On

C4000h - C47FFh

C6000h - C7FFFh

On

On

Off

On

On

C4800h - C4FFFh

C6000h - C7FFFh

Off

On

Off

On

On

C5000h - C57FFh

C6000h - C7FFFh

On

Off

Off

On

On

C5800h - C5FFFh

C6000h - C7FFFh

Off

Off

Off

On

On

CC000h - CC7FFh

CE000h - CFFFFh

On

On

On

Off

On

CC800h - CCFFFh

CE000h - CFFFFh

Off

On

On

Off

On

CD000h - CD7FFh

CE000h - CFFFFh

On

Off

On

Off

On

CD800h - CDFFFh

CE000h - CFFFFh

Off

Off

On

Off

On

D0000h - D07FFh

D2000h - D3FFFh

On

On

Off

Off

On

D0800h - D0FFFh

D2000h - D3FFFh

Off

On

Off

Off

On

D1000h - D17FFh

C2000h - D3FFFh

On

Off

Off

Off

On

D1800h - D1FFFh

D2000h - D3FFFh

Off

Off

Off

Off

On

D4000h - D46FFh

D6000h - D7FFFh

On

On

On

On

Off

D4800h - D4FFFh

C6000h - D7FFFh

Off

On

On

On

Off

D5000h - D57FFh

D6000h - D7FFFh

On

Off

On

On

Off

D5800h - D5FFFh

D6000h - D7FFFh

Off

Off

On

On

Off

D8000h - D87FFh

DA000h - DBFFFh

On

On

Off

On

Off

D8800h - D8FFFh

DA000h - DBFFFh

Off

On

Off

On

Off

D9000h - D97FFh

DA000h - DBFFFh

On

Off

Off

On

Off

D9800h - D9FFFh

DA000h - DBFFFh

Off

Off

Off

On

Off

DC000h - DC7FFh

DE000h - DFFFFh

On

On

On

Off

Off

DC800h - DCFFFh

DE000h - DFFFFh

Off

On

On

Off

Off

DD000h - DD7FFh

DE000h - DFFFFh

On

Off

On

Off

Off

DD800h - DDFFFh

DE000h - DFFFFh

Off

Off

On

Off

Off

E0000h - E07FFh

E2000h - E3FFFh

On

On

Off

Off

Off

E0800h - E0FFFh

E2000h - E3FFFh

Off

On

Off

Off

Off

E1000h - E17FFh

E2000h - E3FFFh

On

Off

Off

Off

Off

E1800h - E1FFFh

E2000h - E3FFFh

Off

Off

Off

Off

Off

INTERRUPT SELECT

IRQ

JP1/D

JP1/E

JP1/F

JP1/G

JP1/H

IRQ2

Closed

Open

Open

Open

Open

IRQ3

Open

Closed

Open

Open

Open

IRQ4

Open

Open

Closed

Open

Open

IRQ5

Open

Open

Open

Closed

Open

IRQ7

Open

Open

Open

Open

Closed

ROM CONFIGURATION

Setting

JP1/A

Boot ROM enabled

Closed

Boot ROM disabled

Open

RESPONSE/RECONFIGURATION TIMEOUTS

Response Time

IdleTime

Reconfig. Time

JP1/B

JP1/C

78 m

86 m

840 m

Open

Open

258 m

316 m

1680 m

Open

Closed

563 m

624 m

1680 m

Closed

Open

1130 m

1237 m

1680 m

Closed

Closed

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 8=128, 7=64, 6=32, 5=16, 4=8, 3=4, 2=2, 1=1. Turn Off the switches and add the values of the Off switches to obtain the correct node address. (On=0, Off=1)

TOPOLOGY

Type

JP2/C

Star

Closed

Linear Bus

Open

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Red

Solid or Blinking

Data transmission occurring

LED2

Green

Blinking

Reconfiguration

LED2

Green

On

Good connection made

LED1 & LED2

Red & Green

Off

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