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TOP/ARC-10 COAX STAR

TOP MICROSYSTEMS, INC.

TOP/ARC-10 COAX STAR

NIC Type

ARCnet

Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Star

Wiring Type

RG62A/U 93ohm coaxial

Boot ROM

Available

NODE ADDRESS

Node

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

SW2/6

SW2/7

SW2/8

0

-

-

-

-

-

-

-

-

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

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

255

Off

Off

Off

Off

Off

Off

Off

Off

Note:Node address 0 is used for messaging between nodes and must not be used.

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

CABLE LENGTH AND RESPONSE/RECONFIGURATION TIMEOUTS

Cable Length

Response Time

Reconfiguration Time

JP1

JP2

< 20,000 feet

74.7Ás

840ms

Open

Open

 

> 20,000 feet

283.4Ás

1680ms

Closed

Open

 

> 20,000 feet

561.8Ás

1680ms

Open

Closed

 

> 20,000 feet

1118.6Ás

1680ms

Closed

Closed

Note: All NICs on the network must have this option set the same.

BOOT ROM

Setting

JP3

Disabled

Open

 

Enabled

Closed

Note:A 2732 or 2764 boot ROM may be used in the boot ROM socket. If a 2732 is used, the chip must be

INTERRUPT REQUEST

IRQ

JP4

JP5

JP6

JP7

JP8

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

I/O BASE ADDRESS

Address

SW1/1

SW1/2

SW1/3

 

260-26Fh

On

On

On

 

290-29Fh

On

On

Off

2E0-2EFh

On

Off

On

 

2F0-2FFh

On

Off

Off

 

300-30Fh

Off

On

On

 

350-35Fh

Off

On

Off

 

380-38Fh

Off

Off

On

 

3E0-3EFh

Off

Off

Off

BASE MEMORY ADDRESS &AMP; BOOT ROM ADDRESS

Base Address

Boot ROM

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

 

C0000h

C2000h

On

On

On

On

On

 

C0800h

C2000h

On

On

On

On

Off

 

C1000h

C2000h

On

On

On

Off

On

 

C1800h

C2000h

On

On

On

Off

Off

 

C4000h

C6000h

On

On

Off

On

On

 

C4800h

C6000h

On

On

Off

On

Off

 

C5000h

C6000h

On

On

Off

Off

On

 

C5800h

C6000h

On

On

Off

Off

Off

 

CC000h

CE000h

On

Off

On

On

On

 

CC800h

CE000h

On

Off

On

On

Off

 

CD000h

CE000h

On

Off

On

Off

On

 

CD800h

CE000h

On

Off

On

Off

Off

D0000h

D2000h

On

Off

Off

On

On

 

D0800h

D2000h

On

Off

Off

On

Off

 

D1000h

D2000h

On

Off

Off

Off

On

 

D1800h

D2000h

On

Off

Off

Off

Off

 

D4000h

D6000h

Off

On

On

On

On

 

D4800h

D6000h

Off

On

On

On

Off

 

D5000h

D6000h

Off

On

On

Off

On

 

D5800h

D6000h

Off

On

On

Off

Off

 

D8000h

DA000h

Off

On

Off

On

On

 

D8800h

DA000h

Off

On

Off

On

Off

 

D9000h

DA000h

Off

On

Off

Off

On

 

D9800h

DA000h

Off

On

Off

Off

Off

 

DC000h

DE000h

Off

Off

On

On

On

 

DC800h

DE000h

Off

Off

On

On

Off

 

DD000h

DE000h

Off

Off

On

Off

On

 

DD800h

DE000h

Off

Off

On

Off

Off

 

E0000h

E2000h

Off

Off

Off

On

On

 

E0800h

E2000h

Off

Off

Off

On

Off

 

E1000h

E2000h

Off

Off

Off

Off

On

 

E1800h

E2000h

Off

Off

Off

Off

Off