LanCard/A Network Card Settings and Configuration

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

Node

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

0

-

-

-

-

-

-

-

-

1

Off

On

On

On

On

On

On

On

2

On

Off

On

On

On

On

On

On

3

Off

Off

On

On

On

On

On

On

4

On

On

Off

On

On

On

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

DIAGNOSTIC LED(S)

LED

Status

Condition

L1

On

Data is being transmitted/received

L1

Blinking

Card is reconfiguring

L1

Off

Card is resetting or is inoperative

INTERRUPT REQUEST

IRQ

JP1

JP2

JP3

JP4

JP5

2

Open

Open

Open

Open

Closed

3

Open

Open

Open

Closed

Open

4

Open

Open

Closed

Open

Open

5

Open

Closed

Open

Open

Open

7

Closed

Open

Open

Open

Open

OPTIONAL 8253 TIMER INTERRUPT REQUEST

IRQ

JP6

JP7

JP8

JP9

JP10

JP11

JP12

JP13

JP14

JP15

2

Open

Open

Open

Open

Closed

Open

Open

Open

Open

Closed

3

Open

Open

Open

Closed

Open

Open

Open

Open

Closed

Open

4

Open

Open

Closed

Open

Open

Open

Open

Closed

Open

Open

5

Open

Closed

Open

Open

Open

Open

Closed

Open

Open

Open

7

Closed

Open

Open

Open

Open

Closed

Open

Open

Open

Open

RESPONSE/RECONFIGURATION TIMEOUTS

Response Time

Reconfiguration Time

JP16

JP17

»

74.7µs

840µs

Open

Open

283.4µs

1680µs

Open

Closed

561.8µs

1680µs

Closed

Open

1118.6µs

1680µs

Closed

Closed

Note: All NICs on the network must have this option set the same.

I/O BASE ADDRESS

Address

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

»

2E0h

Off

On

Off

Off

Off

On

160h

On

Off

On

Off

Off

On

1E0h

On

Off

Off

Off

Off

On

260h

Off

On

On

Off

Off

On

360h

Off

Off

On

Off

Off

On

3E0h

Off

Off

Off

Off

Off

On

Note: Some examples of possible settings are shown. The switches are a binary representation of the hexadecimal I/O addresses. Switch 6 is the Least Significant Bit and switch 1 is the Most Significant Bit. The switches have the following decimal values: switch 6=1h, 5=2h, 4=4h, 3=8h, 2=10h, 1=20h. Turn off the switches, add the values of the off switches, and multiply the total by 10h to obtain the correct I/O address. (On=0, Off=1)

BOOT CONFIGURATION

Setting

SW2/9

SW2/10

Boot from network, ignore bootable floppy or hard drives

On

On

Try to boot from floppy drive A, then the network

On

Off

Try to boot from hard drive C, then the network

Off

Off

Try to boot from floppy drive A, then from hard drive C, then the network

Off

On

RIM BUFFER, BOOT ROM, AND EXPANSION RAM ADDRESS CONFIGURATION

Address

SW1/7

SW1/8

SW1/9

SW1/10

Cxxxxh

On

On

Off

Off

Dxxxxh

On

On

Off

On

Exxxxh

On

On

On

On

Note: This table represents the first digit of three separate addresses, the rim buffer address, the boot ROM
x variables are configured for the three different addresses in the next three tables.

BOOT ROM ADDRESS CONFIGURATION

Address

JP18

JP19

JP20

»

x8000h

Open

Closed

Open

Disabled

Open

Open

Open

x4000h

Closed

Open

Open

xC000h

Open

Open

Closed

EXPANSION SRAM CONFIGURATION

Size

Address

JP21

W1

»

Disabled

Disabled

Open

N/A

2K x 8 (24pin)

x4000h

Closed

Pins 2 & 3 closed

8K x 8 (28pin)

x4000h

Closed

PIns 1 & 2 closed

Note: The manufacturer suggests the use of Hitatchi 6116 2K x 8 SRAM or Hitatchi 6264 8K x 8 SRAM chips. Most network software packages do not currently support the extra expansion memory

RAM BUFFER ADDRESS CONFIGURATION

Address

JP22

JP23

»

x0000h

Open

Closed

x4000h

Closed

Open

Note: The RAM Buffer cannot be disabled.