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ETHERCOMBO-16 T/C(VERSION 1.0)

ALTA RESEARCH CORPORATION

ETHERCOMBO-16 T/C(VERSION 1.0)

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

8/16-bit ISA

Topology

Star

Linear bus

Wiring Type

Unshielded twisted pair

RG58A/U 50ohm coaxial

Boot ROM

Available

I/O BASE ADDRESS AND BOOT ROM ADDRESS

I/O Address

Boot ROM Address

JP1A

JP1B

300-31Fh

C8000h

Closed

Closed

 

320-33Fh

CC000h

Open

Closed

 

340-35Fh

D0000h

Closed

Open

 

360-37Fh

D4000h

Open

Open

INTERRUPT REQUEST

IRQ

JP1C

JP1D

JP1E

JP1F

JP1G

JP2A

JP2B

JP2C

JP2D

JP2E

 

2/9

Closed

Open

Open

Open

Open

Open

Open

Open

Open

Open

3

Open

Closed

Open

Open

Open

Open

Open

Open

Open

Open

 

4

Open

Open

Closed

Open

Open

Open

Open

Open

Open

Open

 

5

Open

Open

Open

Closed

Open

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

Open

Open

Open

Open

Closed

 

11

Open

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

12

Open

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

14

Open

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

15

Open

Open

Open

Open

Open

Open

Closed

Open

Open

Open

BOOT ROM

Setting

JP3

Disabled

Pins 2 & 3 closed

 

Enabled

Pins 1 & 2 closed

CABLE TYPE

Type

JP4

Unshielded twisted pair

Pins 2 & 3 closed

 

RG58A/U 50ohm coaxial

Pins 1 & 2 closed

NETWORK STANDARD

Standard

JP5

802.3 IEEE

Pins 1 & 2 closed

 

802.2 IEEE

Pins 2 & 3 closed

Note:The 802.2 IEEE setting allows the card to act as a bridge between an Ethernet PC network and a mainframe

POLARITY LED CONFIGURATION

Setting

LED4

Condition

JP6A & JP6B

Normal

On

Polarity reversed & corrected

Pins 1 & 2 closed

   

Off

Polarity correct

 
 

Reversed

On

Polarity correct

Pins 2 & 3 closed

   

Off

Polarity reversed & corrected

 

Note:Changing this option to reversed does not reverse the polarity of the twisted pair wires, that is done

COMPATIBILITY MODE

Setting

JP7

Disabled

Closed

 

Enabled

Open

Note:If the system in which the card is to be installed is an 80286 using an older C & T or VLSI chipset and the

DIAGNOSTIC LED(S)

LED

Color

Status

Condition

LED1

Green

On

Twisted pair network connection is good

LED1

Green

Off

Twisted pair network connection is broken

LED2

Red

On

Data is being transmitted or received

LED2

Red

Off

Data is not being transmitted or received

LED3

Red

On

Collision detected on network

LED3

Red

Off

No collisions detected on network

Note:For the function of LED4, please see the Polarity LED Configuration table.