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PCARC

NETWORK INTERFACE TECHNOLOGY CORPORATION

PCARC

NIC Type

Arcnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star

Wiring Type

RG-62A/U 93ohm coaxial

Boot ROM

Available

NODE ADDRESS SELECTION

Address

SW3/1

SW3/2

SW3/3

SW3/4

SW3/5

SW3/6

SW3/7

SW3/8

0

On

On

On

On

On

On

On

On

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: A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. Switch SW3/8 is the Least Significant Bit and switch SW3/1 is the Most Significant Bit. The switches have the following decimal values: switch SW3/8=1, SW3/7=2, SW3/6=4, SW3/5=8, SW3/4=16, SW3/3=32, SW3/2=64, SW3/1=128. Turn off the switches and add the values of the off switches to obtain the correct node address. (on=0, off=1)

SHARED RAM CONFIGURATION

Address

SW1/3

SW1/4

SW1/5

SW1/6

C0000h

Off

Off

Off

Off

C4000h

Off

Off

Off

On

C8000h

Off

Off

On

Off

CC000h

Off

Off

On

On

D0000h

Off

On

Off

Off

D4000h

Off

On

Off

On

D8000h

Off

On

On

Off

DC000h

Off

On

On

On

E0000h

On

Off

Off

Off

E4000h

On

Off

Off

On

E8000h

On

Off

On

Off

EC000h

On

Off

On

On

F0000h

On

On

Off

Off

F4000h

On

On

Off

On

F8000h

On

On

On

Off

FC000h

On

On

On

On

INTERRUPT SELECTION

IRQ

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

2

On

Off

Off

Off

Off

3

Off

On

Off

Off

Off

4

Off

Off

On

Off

Off

5

Off

Off

Off

On

Off

7

Off

Off

Off

Off

On

TIME OUT CONFIGURATION

Response (micro Sec)

Reconfig. (ms)

Distance

SW1/1

SW1/2

74.7

840

3.8 miles

Off

Off

283.4

1680

17.5 miles

Off

On

561.8

1680

35.5 miles

On

Off

1118.6

1680

71.4miles

On

On

BASE I/O ADDRESS SELECTION

Address

SW1/7

SW1/8

SW2/1

SW2/2

SW2/3

200h

Off

Off

Off

Off

Off

210h

Off

Off

Off

Off

On

220h

Off

Off

Off

On

Off

230h

Off

Off

Off

On

On

240h

Off

Off

On

Off

Off

250h

Off

Off

On

Off

On

260h

Off

Off

On

On

Off

270h

Off

Off

On

On

On

280h

Off

On

Off

Off

Off

290h

Off

On

Off

Off

On

2A0h

Off

On

Off

On

Off

2B0h

Off

On

Off

On

On

2C0h

Off

On

On

Off

Off

2D0h

Off

On

On

Off

On

2E0h

Off

On

On

On

Off

2F0h

Off

On

On

On

On

300h

On

Off

Off

Off

Off

310h

On

Off

Off

Off

On

320h

On

Off

Off

On

Off

330h

On

Off

Off

On

On

340h

On

Off

On

Off

Off

350h

On

Off

On

Off

On

360h

On

Off

On

On

Off

370h

On

Off

On

On

On

380h

On

On

Off

Off

Off

390h

On

On

Off

Off

On

3A0h

On

On

Off

On

Off

3B0h

On

On

Off

On

On

3C0h

On

On

On

Off

Off

3D0h

On

On

On

Off

On

3E0h

On

On

On

On

Off

3F0h

On

On

On

On

On

FACTORY CONFIGURED - DO NOT ALTER

Jumper/Switch

Position

JP1

N/A

JP2

N/A

JP3

N/A

JP4

N/A

JP5

N/A

JP6

N/A

DIAGNOSTIC LED(S)

LED

Status

Condition

LED1

On

Network connection is good

LED1

Blinking

Network reconfigurations occurring

LED1

Off

Network connection is bad