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8-BIT COAX ARCNET

AT-LAN-TEC, INC.

8-BIT COAX ARCNET

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Linear bus

Star

Wiring Type

RG62A/U 93ohm 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

On

On

On

On

On

On

On

Off

2

On

On

On

On

On

On

Off

On

3

On

On

On

On

On

On

Off

Off

4

On

On

On

On

On

Off

On

On

251

Off

Off

Off

Off

Off

On

Off

Off

252

Off

Off

Off

Off

Off

Off

On

On

253

Off

Off

Off

Off

Off

Off

On

Off

254

Off

Off

Off

Off

Off

Off

Off

On

255

Off

Off

Off

Off

Off

Off

Off

Off

Note:Node address 0 is reserved 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 most significant bit and switch 8 the least significant bit. The switches have the following decimal values: switch 1=128, switch 2=64, switch 3=32, switch 4=16, switch 5=8, switch 6=4, switch 7=2, switch 8=1. Turn off the appropriate switches and add the values of the ‘off’ switches to obtain the correct node address.

MEMORY ADDRESS SELECT

RAM Address

ROM Address

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

C0000 - C07FFh

C2000 - C3FFFh

On

On

On

On

On

C0800 - C0FFFh

C2000 - C3FFFh

On

On

On

On

Off

C1000 - C17FFh

C2000 - C3FFFh

On

On

On

Off

On

C1800 - C1FFFh

C2000 - C3FFFh

On

On

On

Off

Off

C4000 - C47FFh

C6000 - C7FFFh

On

On

Off

On

On

C4800 - C4FFFh

C6000 - C7FFFh

On

On

Off

On

Off

C5000 - C57FFh

C6000 - C7FFFh

On

On

Off

Off

On

C5800 - C5FFFh

C6000 - C7FFFh

On

On

Off

Off

Off

CC000 - CC7FFh

CE000 - CFFFFh

On

Off

On

On

On

CC800 - CCFFFh

CE000 - CFFFFh

On

Off

On

On

Off

CD000 - CD7FFh

CE000 - CFFFFh

On

Off

On

Off

On

CD800 - CDFFFh

CE000 - CFFFFh

On

Off

On

Off

Off

D0000 - D07FFh

D2000 - D3FFFh

On

Off

Off

On

On

D0800 - D0FFFh

D2000 - D3FFFh

On

Off

Off

On

Off

D1000 - D17FFh

D2000 - D3FFFh

On

Off

Off

Off

On

D1800 - D1FFFh

D2000 - D3FFFh

On

Off

Off

Off

Off

D4000 - D47FFh

D6000 - D7FFFh

Off

On

On

On

On

D4800 - D4FFFh

D6000 - D7FFFh

Off

On

On

On

Off

D5000 - D57FFh

D6000 - D7FFFh

Off

On

On

Off

On

D5800 - D5FFFh

D6000 - D7FFFh

Off

On

On

Off

Off

D8000 - D87FFh

DA000 - DBFFFh

Off

On

Off

On

On

D8800 - D8FFFh

DA000 - DBFFFh

Off

On

Off

On

Off

D9000 - D97FFh

DA000 - DBFFFh

Off

On

Off

Off

On

D9800 - D9FFFh

DA000 - DBFFFh

Off

On

Off

Off

Off

DC000 - DC7FFh

DE000 - DFFFFh

Off

Off

On

On

On

DC800 - DCFFFh

DE000 - DFFFFh

Off

Off

On

On

Off

DD000 - DD7FFh

DE000 - DFFFFh

Off

Off

On

Off

On

DD800 - DDFFFh

DE000 - DFFFFh

Off

Off

On

Off

Off

E0000 - E07FFh

E2000 - E3FFFh

Off

Off

Off

On

On

E0800 - E0FFFh

E2000 - E3FFFh

Off

Off

Off

On

Off

E1000 - E17FFh

E2000 - E3FFFh

Off

Off

Off

Off

On

E1800 - E1FFFh

E2000 - E3FFFh

Off

Off

Off

Off

Off

TIMEOUT CONFIGURATION

Response Time( m

Reconfiguration Time(msec)

J1/F

J1/G

»

78

840

Open

Open

 

285

1680

Open

Closed

 

563

1680

Closed

Open

 

1130

1680

Closed

Closed

BOOT ROM

Setting

J1/H

»

Disabled

Open

 

Enabled

Closed

I/O ADDRESS SELECT

Address

SW2/1

SW2/2

SW2/3

»

2E0 - 2EFh

On

Off

On

 

260 - 26Fh

On

On

On

 

290 - 29Fh

On

On

Off

 

2F0 - 2FFh

On

Off

Off

 

300 - 30Fh

Off

On

On

 

350 - 35Fh

Off

On

Off

 

380 - 38Fh

Off

Off

On

 

3E0 - 3EFh

Off

Off

Off

INTERRUPT SELECT

IRQ

J1/A

J1/B

J1/C

J1/D

J1/E

»

IRQ3

Open

Closed

Open

Open

Open

 

IRQ2

Closed

Open

Open

Open

Open

 

IRQ4

Open

Open

Closed

Open

Open

 

IRQ5

Open

Open

Open

Closed

Open

 

IRQ7

Open

Open

Open

Open

Closed

MISCELLANEOUS TECHNICAL NOTE

Note:The 8-bit COAX ARCnet supports either linear bus or star topologies, depending on the version purchased.