...because we can't all be on the bleeding edge...





PCNET (REV. D)

ORCHID TECHNOLOGY

PCNET (REV. D)

NIC Type

Unidentified

Network Transfer Rate

Unidentified

Data Bus

8-bit ISA

Topology

Linear Bus

Wiring Type

RG-11A/U 75ohm coaxial

RG-59B/U 75ohm coaxial

Boot ROM

Available

CONNECTIONS

Function

Label

RG-11A/U or RG-59B/U 75ohm coaxial connector

CN1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Tri-state disabled

JP4

Pins 2 & 3 closed

Tri-state enabled

JP4

Pins 1 & 2 closed

INTERRUPT

Setting

JP1

IRQ2

Pins 9 & 10 closed

IRQ3

Pins 7 & 8 closed

IRQ4

Pins 4 & 7 closed

IRQ5

Pins 6 & 7 closed

Note:The settings for IRQ4 and IRQ5 may only be set with a wire-wrapping tool.

DMA CHANNEL

Setting

JP1

DMA1

Pins 11 & 12, 13 & 14 closed

DMA3

Pins 15 & 16, 17 & 18 closed

BASE I/O ADDRESS

Setting

JP3/A

JP3/B

JP3/C

JP3/D

280h

Open

Closed

Open

Closed

290h

Closed

Open

Open

Closed

380h

Open

Closed

Closed

Open

390h

Closed

Open

Closed

Open

BOOT ROM ADDRESS

Setting

JP2/A

JP2/B

JP2/C

JP2/D

JP2/E

D0000h

Closed

Open

Open

Open

Open

D2000h

Open

Closed

Open

Open

Open

D4000h

Open

Open

Closed

Open

Open

D6000h

Open

Open

Open

Closed

Open

Disabled

Open

Open

Open

Open

Closed

NODE ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

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

5

Off

Off

Off

Off

Off

On

Off

On

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: A total of 255 node address settings are available. The switches are a binary representation of the decimal node addresses. SW1/1 is the Most Significant Bit and switch SW1/8 is the Least Significant Bit. The switches have the following decimal values: SW1/1=128, SW1/2=64, SW1/3=32, SW1/4=16, SW1/5=8, SW1/6=4, SW1/7=2, SW1/8=1. Turn off the switches and add the values of the switches that are off to obtain the correct node ID. (Off=0, On=1)

Node address 0 is reserved and should not be used.