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A-NET-1 (VER. 1.0)

COMPEX, INC.

A-NET-1 (VER. 1.0)

NIC Type

ArcNet

Chip Set

NCR 90C26

Data Bus

8-bit ISA

Network Transfer Rate

2.5Mbps

Topology

Star

Wiring Type

RG-62A/U 93ohm coaxial

Boot ROM

Available

CONNECTIONS

Function

Label

RG-62A/U 93ohm coaxial cable

CN1

EXTENDED RANGE CONFIGURATION

Response Time

Recon Time

JP1

JP2

75.7 uS

840 mS

Open

Open

283.4 uS

1.68 S

Closed

Open

561.8 uS

1.68 S

Open

Closed

1.1186 mS

1.68 S

Closed

Closed

Note:This setting should only be changed when the length of the ArcNet segments exceed 6000 meters.

NODE ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

1

On

Off

Off

Off

Off

Off

Off

Off

2

Off

On

Off

Off

Off

Off

Off

Off

3

On

On

Off

Off

Off

Off

Off

Off

4

Off

Off

On

Off

Off

Off

Off

Off

5

On

Off

On

Off

Off

Off

Off

Off

250

Off

On

Off

On

On

On

On

On

251

On

On

Off

On

On

On

On

On

252

Off

Off

On

On

On

On

On

On

253

On

Off

On

On

On

On

On

On

254

Off

On

On

On

On

On

On

On

Note: A total of 253 node address settings are available. The switches are a binary representation of the decimal node addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=128, SW1/7=64, SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off the switches and add the values of the switches that are off to obtain the correct node address. (Off=1, On=0)

Addresses 0 and 255 are reserved and should not be used.

BASE I/O ADDRESS

Setting

JP4/A

JP4/B

JP4/C

JP4/D

JP4/E

JP4/F

 

000h

Open

Open

Open

Open

Open

Open

 

010h

Closed

Open

Open

Open

Open

Open

 

020h

Open

Closed

Open

Open

Open

Open

 

030h

Closed

Closed

Open

Open

Open

Open

 

040h

Open

Open

Closed

Open

Open

Open

 

3B0h

Closed

Closed

Open

Closed

Closed

Closed

 

3C0h

Open

Open

Closed

Closed

Closed

Closed

 

3D0h

Closed

Open

Closed

Closed

Closed

Closed

3E0h

Open

Closed

Closed

Closed

Closed

Closed

 

3F0h

Closed

Closed

Closed

Closed

Closed

Closed

Note: A total of 64 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP4/A is the Least Significant Bit and jumper JP4/F is the Most Significant Bit. The jumpers have the following decimal values: JP4/F=512, JP4/E=256, JP4/D=128, JP4/C=64, JP4/B=32, JP4/A=16. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0)

SHARED RAM ADDRESS

Setting

JP5/A

JP5/B

JP5/C

JP5/D

JP5/E

 

00000h

Open

Open

Open

Open

Open

 

08000h

Closed

Open

Open

Open

Open

 

10000h

Open

Closed

Open

Open

Open

 

18000h

Closed

Closed

Open

Open

Open

 

20000h

Open

Open

Closed

Open

Open

D0000h

Closed

Open

Closed

Open

Open

 

D8000h

Closed

Closed

Open

Closed

Closed

 

E0000h

Open

Open

Closed

Closed

Closed

 

E8000h

Closed

Open

Closed

Closed

Closed

 

F0000h

Open

Closed

Closed

Closed

Closed

 

F8000h

Closed

Closed

Closed

Closed

Closed

Note: A total of 32 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP5/A is the Least Significant Bit and jumper JP5/F is the Most Significant Bit. The jumpers have the following decimal values: JP5/E=524288, JP5/D=262144, JP5/C=131072, JP5/B=65536, JP5/A=32768. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0)

INTERRUPT

Setting

JP3/A

JP3/B

JP3/C

JP3/D

JP3/E

2

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

DIAGNOSTIC LED(S)

The color and function of the LED is unidentified.