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LanCard/A * PC & LanCard/A * PC HiZ

TIARA COMPUTER SYSTEMS, INC.

LanCard/A * PC & LanCard/A * PC HiZ

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star (PC)

Linear Bus (PC HiZ)

Wiring Type

RG-62A/U 93ohm coaxial (PC and PC HiZ)

RG-58A/U 50ohm coaxial (HiZ only)

Boot ROM

Available

NODE ADDRESS

Node

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

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

JP1

JP2

JP3

JP4

JP5

JP6

2

Closed

Open

Open

Open

Open

Open

3

Open

Closed

Open

Open

Open

Open

4

Open

Open

Closed

Open

Open

Open

5

Open

Open

Open

Closed

Open

Open

6

Open

Open

Open

Open

Closed

Open

7

Open

Open

Open

Open

Open

Closed

ENHANCED DIAGNOSTICS ENABLE

Setting

JP7

Disabled

Pins 1 & 2 closed

 

Enabled

Pins 2 & 3 closed

Note: The enhanced diagnostics are compatible only with the driver that was shipped with this card.

I/O BASE ADDRESS

Address

SW1/1

SW1/2

SW1/3

2E0h

Off

On

Off

 

260h

Off

Off

Off

 

290h

Off

Off

On

 

2B0h

Off

On

On

 

300h

On

Off

Off

 

350h

On

Off

On

 

380h

On

On

On

 

3E0h

On

On

On

RIM BUFFER ADDRESS CONFIGURATION

Buffer Address

SW1/4

SW1/5

SW1/6

D0OO-D3FFH

On

Off

Off

 

C0OO-C3FFH

Off

Off

Off

 

C4OO-C7FFH

Off

Off

On

 

CCOO-CFFFH

Off

On

On

 

D4OO-D7FFH

On

Off

On

 

D8OO-DBFFH

On

On

Off

 

DCOO-DFFFH

On

On

On

 

E000-E3FFH

Off

On

Off

Note: The lower 8K of the address above is used as a network data buffer. The upper 8K is where the Boot ROM is loaded into system memory.

CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS

Maximum Length

Response Time

Reconfiguration

SW1/7

SW1/8

4.8 miles

74.7Ás

840ms

On

On

 

21.0 miles

283.4Ás

1680ms

On

Off

 

42.5 miles

561.8Ás

1680ms

Off

On

 

85.6 miles

1118.6Ás

1680ms

Off

Off

Note: Maximum length is the distance between the two farthest cards on the network. All cards on a segment must have this option set the same.

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

L1

Red

On

Data is being received

L1

Red

Off

Data is not being received

L1

Red

Blinking

Card is reconfiguring

L2

Green

On

Data is being transmitted

L2

Green

Off

Data is not being transmitted

L2

Green

Blinking

Card is reconfiguring

Note: If LEDs L1 & L2 continue to blink for an extended amount of time, this indicates a network problem such as a defective card, a broken network connection, or a hub failure.