GATEWAY COMMUNICATIONS, INC.

G/EtherTwist 16 Adapter (NATIONAL CHIPSET)

NIC Type

Ethernet

Transfer Rate

10Mbps

Data Bus

16-bit ISA

Topology

Star

Linear Bus

Wiring Type

Shielded/Unshielded twisted pair

AUI transceiver via DB-15 port

Boot ROM

Available

INTERRUPT REQUEST

IRQ

JP1

JP2

JP3

JP4

JP5

JP6

JP7

JP8

JP9

JP10

 

2

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

 

6

Open

Open

Open

Open

Closed

Open

Open

Open

Open

Open

 

7

Open

Open

Open

Open

Open

Closed

Open

Open

Open

Open

 

10

Open

Open

Open

Open

Open

Open

Closed

Open

Open

Open

 

11

Open

Open

Open

Open

Open

Open

Open

Closed

Open

Open

 

12

Open

Open

Open

Open

Open

Open

Open

Open

Closed

Open

 

15

Open

Open

Open

Open

Open

Open

Open

Open

Open

Closed

LINK INTEGRITY TEST

Setting

JP31

»

Enabled

Pins 1 & 2 Closed

 

Disabled

Pins 2 & 3 Closed

Note:Link Integrity is only used with 10Base-T wiring. When using an AUI transciever, the test should be disabled.

I/O BASE ADDRESS

I/O Address

SW1/1

SW1/2

SW1/3

SW1/4

 

280-29F

On

On

On

On

»

2A0-2BF

On

Off

On

On

 

2C0-2DF

On

On

Off

On

 

2E0-2FF

On

Off

Off

On

 

300-31F

On

On

On

Off

 

320-33F

On

Off

On

Off

 

340-35F

On

On

Off

Off

 

360-37F

On

Off

Off

Off

BASE MEMORY ADDRESS

Base Address

SW1/5

SW1/6

 

C0000-C3FFF

On

On

 

C4000-C7FFF

Off

On

 

C8000-CBFFF

On

Off

»

CC000- CFFFF

Off

Off

CABLE TYPE

Type

JP13

 

AUI transeiver via DB-15 port

Pins 2 & 3 Closed

»

Unshielded twisted pair

Pins 1 & 2 Closed

COMPATIBILITY MODE

Mode

JP11

»

Compatibility on

Pins 1 & 2 Closed

 

Compatibility off

Pins 2 & 3 Closed

Note: If one of the following problems persist after checking all other possibilities turn off Compatibility.

Intermittent failures when booting, system lock up, or continuous network error messages.

DIAGNOSTIC LED(S)

Status

Condition

Jabber LED (1) on (Red)

Adapter is continually sending random data

Link test LED (2) on (Green)

Network connection good

Link test LED (2) blinks (Green)

Wiring error, disabled test jumper

Transmit LED (3) blinks (Red)

Data is being transmitted

Receive LED (4) blinks (Red)

Data is being received

MISCELLANEOUS NOTES

Different drivers must be used for the National & the Fujitsu chipset cards, & are not interchangeable. Fujitsu adapters may be used for either 8 or 16 bit Fujitsu cards. While the National chipset cards require a different driver for an 8 or 16 bit card.