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ANET-1A

COMPEX, INC.

ANET-1A

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star

Linear Bus

Wiring Type

RG-62A/U 93ohm coaxial

Unshielded twisted pair

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)

INTERRUPT REQUEST

IRQ

JP1A

JP1B

JP1C

JP1D

JP1E

2/9

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

JP2A

JP2B

JP2C

 

260h

Closed

Closed

Closed

 

290h

Closed

Closed

Open

2E0h

Closed

Open

Closed

 

2F0h

Closed

Open

Open

 

300h

Open

Closed

Closed

 

350h

Open

Closed

Open

 

380h

Open

Open

Closed

 

3E0h

Open

Open

Open

BASE MEMORY ADDRESS & BOOT ROM ADDRESS

Base Address

Boot ROM Address

JP3A

JP3B

JP3C

JP3D

JP3E

 

C0000h

C2000h

Closed

Closed

Closed

Closed

Closed

 

C4000h

C6000h

Closed

Closed

Open

Closed

Closed

 

CC000h

CE000h

Closed

Open

Closed

Closed

Closed

D0000h

D2000h

Closed

Open

Open

Closed

Closed

 

D4000h

D6000h

Open

Closed

Closed

Closed

Closed

 

D8000h

DA000h

Open

Closed

Open

Closed

Closed

 

DC000h

DE000h

Open

Open

Closed

Closed

Closed

 

E0000h

E2000h

Open

Open

Open

Closed

Closed

WAIT STATE

Setting

JP4

System wait states

Open

 

Zero wait states

Closed

Note:If 0 wait states is selected, I/O CHRDY must be disabled (JP5 open).

I/O CHRDY

Setting

JP5

Disabled

Open

 

Enabled

Closed

Note:If a boot ROM is installed, I/O CHRDY must be enabled (JP5 closed).

If I/O CHRDY is enabled (JP5 closed), System wait states must be selected (JP4 open)

BOOT ROM

Setting

JP6

Disabled

Open

 

Enabled

Closed

CABLE TYPE

Type

JP7

JP8

RG-58A/U 50ohm coaxial

Pins 1 & 2 Closed

Pins 1 & 2 Closed

 

Unshielded twisted pair

PIns 2 & 3 Closed

PIns 2 & 3 Closed

TOPOLOGY

Topology

JP9

Star

Closed

 

Linear Bus

Open

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Red

On

Network connection is good

LED1

Red

Blinking

Network connection is broken or no activity is detected

LED2

Green

On

Data is being received

LED2

Green

Off

Data is not being received

LED2

Green

Blinking

System power has just been applied