ARCNET PC250 Network Card Settings and Configuration

STANDARD MICROSYSTEMS CORPORATION

ARCNET PC250

NIC Type
Arcnet
Chipset
SMC 9026, 9032
Network Transfer Rate
2.5Mbps
Data Bus
8-bit ISA
Topology
Linear Bus/Star
Wire Type
Unshielded twisted pair
Boot ROM
Available

CONNECTIONS
Function
Label
Function
Label
Unshielded twisted pair connector
J1
Unshielded twisted pair connector
J2

INTERRUPT
Setting
JP3
JP4
JP5
JP6
JP7
IRQ2
Closed
Open
Open
Open
Open
IRQ3
Open
Closed
Open
Open
Open
IRQ4
Open
Open
Closed
Open
Open
IRQ5
Open
Open
Open
Closed
Open
IRQ7
Open
Open
Open
Open
Closed

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
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
5
Off
On
Off
On
On
On
On
On
250
On
Off
On
Off
Off
Off
Off
Off
251
Off
Off
On
Off
Off
Off
Off
Off
252
On
On
Off
Off
Off
Off
Off
Off
253
Off
On
Off
Off
Off
Off
Off
Off
254
On
Off
Off
Off
Off
Off
Off
Off
Note: A total of 254 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 ID. (Off=1, On=0)
Node addresses 0 and 255 are reserved and should not be used.

BASE I/O ADDRESS
Setting
SW1/1
SW1/2
SW1/3
SW1/4
SW1/5
SW1/6

000h
On
On
On
On
On
On

010h
On
On
On
On
On
Off

020h
On
On
On
On
Off
On

030h
On
On
On
On
Off
Off

040h
On
On
On
Off
On
On
»
2E0h
Off
On
Off
Off
Off
On

3B0h
Off
Off
Off
On
Off
Off

3C0h
Off
Off
Off
Off
On
On

3D0h
Off
Off
Off
Off
On
Off

3E0h
Off
Off
Off
Off
Off
On

3F0h
Off
Off
Off
Off
Off
Off
Note: A total of 64 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and switch SW1/6 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

SHARED RAM ADDRESS
Setting
SW2/7
SW2/8
SW2/9
SW2/10
00000h
Off
Off
Off
Off
10000h
Off
Off
Off
On
20000h
Off
Off
On
Off
30000h
Off
Off
On
On
40000h
Off
On
Off
Off
50000h
Off
On
Off
On
60000h
Off
On
On
Off
70000h
Off
On
On
On
80000h
On
Off
Off
Off
90000h
On
Off
Off
On
A0000h
On
Off
On
Off
B0000h
On
Off
On
On
C0000h
On
On
Off
Off
D0000h
On
On
Off
On
E0000h
On
On
On
Off
F0000h
On
On
On
On

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ARCNET PC250 Network Card Settings and Configuration

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NIC Type	Arcnet
Chipset	SMC 9026, 9032
Network Transfer Rate	2.5Mbps
Data Bus	8-bit ISA
Topology	Linear Bus/Star
Wire Type	Unshielded twisted pair
Boot ROM	Available

CONNECTIONS
Function	Label	Function	Label
Unshielded twisted pair connector	J1	Unshielded twisted pair connector	J2

INTERRUPT
Setting	JP3	JP4	JP5	JP6	JP7
IRQ2	Closed	Open	Open	Open	Open
IRQ3	Open	Closed	Open	Open	Open
IRQ4	Open	Open	Closed	Open	Open
IRQ5	Open	Open	Open	Closed	Open
IRQ7	Open	Open	Open	Open	Closed

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	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
5	Off	On	Off	On	On	On	On	On
250	On	Off	On	Off	Off	Off	Off	Off
251	Off	Off	On	Off	Off	Off	Off	Off
252	On	On	Off	Off	Off	Off	Off	Off
253	Off	On	Off	Off	Off	Off	Off	Off
254	On	Off	Off	Off	Off	Off	Off	Off
Note: A total of 254 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 ID. (Off=1, On=0) Node addresses 0 and 255 are reserved and should not be used.

BASE I/O ADDRESS
Setting		SW1/1	SW1/2	SW1/3	SW1/4	SW1/5	SW1/6
	000h	On	On	On	On	On	On
	010h	On	On	On	On	On	Off
	020h	On	On	On	On	Off	On
	030h	On	On	On	On	Off	Off
	040h	On	On	On	Off	On	On
»	2E0h	Off	On	Off	Off	Off	On
	3B0h	Off	Off	Off	On	Off	Off
	3C0h	Off	Off	Off	Off	On	On
	3D0h	Off	Off	Off	Off	On	Off
	3E0h	Off	Off	Off	Off	Off	On
	3F0h	Off	Off	Off	Off	Off	Off
Note: A total of 64 base address settings are available. The switches are a binary representation of the decimal memory addresses. SW1/1 is the Most Significant Bit and switch SW1/6 is the Least Significant Bit. The switches have the following decimal values: SW1/1=512, SW1/2=256, SW1/3=128, SW1/4=64, SW1/5=32, SW1/6=16. Turn off the switches and add the values of the switches that are off to obtain the correct memory address. (Off=1, On=0)

SHARED RAM ADDRESS
Setting	SW2/7	SW2/8	SW2/9	SW2/10
00000h	Off	Off	Off	Off
10000h	Off	Off	Off	On
20000h	Off	Off	On	Off
30000h	Off	Off	On	On
40000h	Off	On	Off	Off
50000h	Off	On	Off	On
60000h	Off	On	On	Off
70000h	Off	On	On	On
80000h	On	Off	Off	Off
90000h	On	Off	Off	On
A0000h	On	Off	On	Off
B0000h	On	Off	On	On
C0000h	On	On	Off	Off
D0000h	On	On	Off	On
E0000h	On	On	On	Off
F0000h	On	On	On	On