PCNET (REV. C1)

ORCHID TECHNOLOGY

PCNET (REV. C1)

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

Not available

CONNECTIONS

Function

Label

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

CN1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

ť
Factory configured - do not alter

SW2/1

Off

ť
Factory configured - do not alter

SW2/2

Off

ť
Factory configured - do not alter

SW2/3

Off

ť
Factory configured - do not alter

SW2/4

Off

ť
Factory configured - do not alter

SW2/5

Off

ť
Factory configured - do not alter

SW2/6

Off

ť
Factory configured - do not alter

SW2/7

Off

ť
Factory configured - do not alter

SW2/8

Off

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

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.

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	Not available

CONNECTIONS
Function	Label
RG-11A/U or RG-59B/U 75ohm coaxial connector	CN1

USER CONFIGURABLE SETTINGS
Setting		Label	Position
ť	Factory configured - do not alter	SW2/1	Off
ť	Factory configured - do not alter	SW2/2	Off
ť	Factory configured - do not alter	SW2/3	Off
ť	Factory configured - do not alter	SW2/4	Off
ť	Factory configured - do not alter	SW2/5	Off
ť	Factory configured - do not alter	SW2/6	Off
ť	Factory configured - do not alter	SW2/7	Off
ť	Factory configured - do not alter	SW2/8	Off

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

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.