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IBM PC/XT AND PC/AT CLUSTER ADAPTER

IBM CORPORATION

IBM PC/XT AND PC/AT CLUSTER ADAPTER

NIC Type

Unidentified

Network Transfer Rate

Unidentified

Data Bus

8-bit ISA

Topology

Linear Bus

Wire Type

RG-59B/U 75ohm coaxial

Boot ROM

Available (location unidentified)

CONNECTIONS

Function

Label

RG-59B/U 75ohm coaxial connector

CN1

USER CONFIGURABLE SETTINGS

Setting

Label

Position

Factory configured - do not alter

J3

Closed

Factory configured - do not alter

SW1/7

Off

 

Boot ROM enabled

SW1/8

On

 

Boot ROM disabled

SW1/8

Off

NODE ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

0

Off

Off

Off

Off

Off

Off

1

On

Off

Off

Off

Off

Off

2

Off

On

Off

Off

Off

Off

3

On

On

Off

Off

Off

Off

4

Off

Off

On

Off

Off

Off

59

On

On

Off

On

On

On

60

Off

Off

On

On

On

On

61

On

Off

On

On

On

On

62

Off

On

On

On

On

On

63

On

On

On

On

On

On

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

INTERRUPT

Setting

J2

IRQ3

Pins 3 & 4 closed

IRQ7

Pins 1 & 2 closed

Disabled

Open

SHARED RAM ADDRESS

Setting

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

00390h

Off

Off

Off

Off

Off

Off

Off

Off

00790h

On

Off

Off

Off

Off

Off

Off

Off

00B90h

Off

On

Off

Off

Off

Off

Off

Off

00F90h

On

On

Off

Off

Off

Off

Off

Off

01390h

Off

Off

On

Off

Off

Off

Off

Off

3EF90h

On

On

Off

On

On

On

On

On

3F390h

Off

Off

On

On

On

On

On

On

3F790h

On

Off

On

On

On

On

On

On

3FB90h

Off

On

On

On

On

On

On

On

3FF90h

On

On

On

On

On

On

On

On

Note: A total of 255 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/8 is the Most Significant Bit and switch SW1/1 is the Least Significant Bit. The switches have the following decimal values: SW1/8=131,072, SW1/7=65,536, SW1/6=32,768, SW1/5=16,384, SW1/4=8,192, SW1/3=4,096, SW1/2=2,048, SW1/1=1,024. Turn off the switches and add the values of the switches that are off to 912 to obtain the correct memory address. (Off=0, On=1)