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SPEEDARC (VER.1.0)

EVEREX SYSTEMS, INC.

SPEEDARC (VER.1.0)

NIC Type

ARCnet

Network Transfer Rate

2.5Mbps

Data Bus

8-bit ISA

Topology

Linear Bus

Wiring Type

RG-58A/U 50ohm coaxial

Boot ROM

Available (location unidentified)

CONNECTIONS

Function

Label

RG-58A/U 50ohm coaxial port

CN1

BASE I/O ADDRESS SELECTION

Address

JP2/6

JP2/7

JP2/8

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

INTERRUPT SELECTION

IRQ

JP1/A

JP1/B

JP1/C

JP1/D

JP1/E

2

Open

Open

Open

Open

Closed

 

3

Open

Open

Open

Closed

Open

 

4

Open

Open

Closed

Open

Open

 

5

Open

Closed

Open

Open

Open

 

7

Closed

Open

Open

Open

Open

NODE ADDRESS

Node

JP/1

JP1/2

JP1/3

JP1/4

JP1/5

JP1/6

JP1/7

JP1/8

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

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: A total of 255 node 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=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 to obtain the correct memory address.

BOOT ROM CONFIGURATION

Setting

JP1/H

Disabled

Open

 

Enabled

Closed

EXTENDED TIMEOUTS SELECTION

Response Time

Idle Time

Reconfiguration Time

JP1/F

JP1/G

78

86

840

Open

Open

 

285

316

1680

Open

Closed

 

563

624

1680

Closed

Open

 

1130

1237

1680

Closed

Closed

RAM/PROM ADDRESS SELECTION

RAM Address

PROM Address

JP2/1

JP2/2

JP2/3

JP2/4

JP2/5

 

C:0000h - C:07FFh

C:2000h - C:3FFFh

On

On

On

On

On

 

C:0800h - C:0FFFh

C:2000h - C:3FFFh

On

On

On

On

Off

 

C:1000h - C:17FFh

C:2000h - C:3FFFh

On

On

On

Off

On

 

C:1800h - C:1FFFh

C:2000h - C:3FFFh

On

On

On

Off

Off

 

C:4000h - C:47FFh

C:6000h - C:7FFFh

On

On

Off

On

On

 

C:4800h - C:4FFFh

C:6000h - C:7FFFh

On

On

Off

On

Off

 

C:5000h - C:57FFh

C:6000h - C:7FFFh

On

On

Off

Off

On

 

C:5800h - C:5FFFh

C:6000h - C:7FFFh

On

On

Off

Off

Off

 

C:C000h - C:C7FFh

C:E000h - C:FFFFh

On

Off

On

On

On

 

C:C800h - C:CFFFh

C:E000h - C:FFFFh

On

Off

On

On

Off

 

C:D000h - C:D7FFh

C:E000h - C:FFFFh

On

Off

On

Off

On

 

C:D800h - C:DFFFh

C:E000h - C:FFFFh

On

Off

On

Off

Off

D:0000h - D:07FFh

D:2000h - D:3FFFh

On

Off

Off

On

On

 

D:0800h - D:0FFFh

D:2000h - D:3FFFh

On

Off

Off

On

Off

 

D:1000h - D:17FFh

D:2000h - D:3FFFh

On

Off

Off

Off

On

 

D:1800h - D:1FFFh

D:2000h - D:3FFFh

On

Off

Off

Off

Off

 

D:4000h - D:47FFh

D:6000h - D:7FFFh

Off

On

On

On

On

 

D:4800h - D:4FFFh

D:6000h - D:7FFFh

Off

On

On

On

Off

 

D:5000h - D:57FFh

D:6000h - D:7FFFh

Off

On

On

Off

On

 

D:5800h - D:5FFFh

D:6000h - D:7FFFh

Off

On

On

Off

Off

 

D:8000h - D:87FFh

D:A000h - D:BFFFh

Off

On

Off

On

On

 

D:8800h - D:8FFFh

D:A000h - D:BFFFh

Off

On

Off

On

Off

 

D:9000h - D:97FFh

D:A000h - D:BFFFh

Off

On

Off

Off

On

 

D:9800h - D:9FFFh

D:A000h - D:BFFFh

Off

On

Off

Off

Off

 

D:C000h - D:C7FFh

D:E000h - D:FFFFh

Off

Off

On

On

On

 

D:C800h - D:CFFFh

D:E000h - D:FFFFh

Off

Off

On

On

Off

 

D:D000h - D:D7FFh

D:E000h - D:FFFFh

Off

Off

On

Off

On

 

D:D800h - D:DFFFh

D:E000h - D:FFFFh

Off

Off

On

Off

Off

 

E:0000h - E:07FFh

E:2000h - E:3FFFh

Off

Off

Off

On

On

 

E:0800h - E:0FFFh

E:2000h - E:3FFFh

Off

Off

Off

On

Off

 

E:1000h - E:17FFh

E:2000h - E:3FFFh

Off

Off

Off

Off

On

 

E:1800h - E:1FFFh

E:2000h - E:3FFFh

Off

Off

Off

Off

Off