NIC Type	ArcNet
Chip Set	NCR 90C26
Data Bus	8-bit ISA
Network Transfer Rate	2.5Mbps
Topology	Star
Wiring Type	RG-62A/U 93ohm coaxial
Boot ROM	Available

CONNECTIONS
Function	Label
RG-62A/U 93ohm coaxial cable	CN1

EXTENDED RANGE CONFIGURATION
Response Time	Recon Time	JP1	JP2
75.7 uS	840 mS	Open	Open
283.4 uS	1.68 S	Closed	Open
561.8 uS	1.68 S	Open	Closed
1.1186 mS	1.68 S	Closed	Closed
Note:This setting should only be changed when the length of the ArcNet segments exceed 6000 meters.

NODE ADDRESS
Setting	SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6	SW1/7	SW1/8
1	On	Off	Off	Off	Off	Off	Off	Off
2	Off	On	Off	Off	Off	Off	Off	Off
3	On	On	Off	Off	Off	Off	Off	Off
4	Off	Off	On	Off	Off	Off	Off	Off
5	On	Off	On	Off	Off	Off	Off	Off
250	Off	On	Off	On	On	On	On	On
251	On	On	Off	On	On	On	On	On
252	Off	Off	On	On	On	On	On	On
253	On	Off	On	On	On	On	On	On
254	Off	On	On	On	On	On	On	On
Note: A total of 253 node address settings are available. The switches are a binary representation of the decimal node 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=128, SW1/7=64, SW1/6=32, SW1/5=16, SW1/4=8, SW1/3=4, SW1/2=2, SW1/1=1. Turn off the switches and add the values of the switches that are off to obtain the correct node address. (Off=1, On=0) Addresses 0 and 255 are reserved and should not be used.

BASE I/O ADDRESS
Setting		JP4/A	JP4/B	JP4/C	JP4/D	JP4/E	JP4/F
	000h	Open	Open	Open	Open	Open	Open
	010h	Closed	Open	Open	Open	Open	Open
	020h	Open	Closed	Open	Open	Open	Open
	030h	Closed	Closed	Open	Open	Open	Open
	040h	Open	Open	Closed	Open	Open	Open
	3B0h	Closed	Closed	Open	Closed	Closed	Closed
	3C0h	Open	Open	Closed	Closed	Closed	Closed
	3D0h	Closed	Open	Closed	Closed	Closed	Closed
»	3E0h	Open	Closed	Closed	Closed	Closed	Closed
	3F0h	Closed	Closed	Closed	Closed	Closed	Closed
Note: A total of 64 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP4/A is the Least Significant Bit and jumper JP4/F is the Most Significant Bit. The jumpers have the following decimal values: JP4/F=512, JP4/E=256, JP4/D=128, JP4/C=64, JP4/B=32, JP4/A=16. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0)

SHARED RAM ADDRESS
Setting		JP5/A	JP5/B	JP5/C	JP5/D	JP5/E
	00000h	Open	Open	Open	Open	Open
	08000h	Closed	Open	Open	Open	Open
	10000h	Open	Closed	Open	Open	Open
	18000h	Closed	Closed	Open	Open	Open
	20000h	Open	Open	Closed	Open	Open
»	D0000h	Closed	Open	Closed	Open	Open
	D8000h	Closed	Closed	Open	Closed	Closed
	E0000h	Open	Open	Closed	Closed	Closed
	E8000h	Closed	Open	Closed	Closed	Closed
	F0000h	Open	Closed	Closed	Closed	Closed
	F8000h	Closed	Closed	Closed	Closed	Closed
Note: A total of 32 base address settings are available. The jumpers are a binary representation of the decimal memory addresses. JP5/A is the Least Significant Bit and jumper JP5/F is the Most Significant Bit. The jumpers have the following decimal values: JP5/E=524288, JP5/D=262144, JP5/C=131072, JP5/B=65536, JP5/A=32768. Close the jumpers and add the values of the jumpers that are closed to obtain the correct memory address. (Closed=1, Open=0)

INTERRUPT
Setting	JP3/A	JP3/B	JP3/C	JP3/D	JP3/E
2	Closed	Open	Open	Open	Open
3	Open	Closed	Open	Open	Open
4	Open	Open	Closed	Open	Open
5	Open	Open	Open	Closed	Open
7	Open	Open	Open	Open	Closed

DIAGNOSTIC LED(S)

The color and function of the LED is unidentified.