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I/O EXTENSION XT

SUNTEK INFORMATION SYSTEMS, INC.

I/O EXTENSION XT

Card Type

Multi I/O card

Chipset Controller

Unidentified

I/O Options

Serial port (2), game port, parallel port

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

9-pin serial port connector 1

J1

25-pin parallel port connector

J3

10-pin serial port interface 2

J2

16-pin game port interface

J4

PARALLEL PORT BASE I/O ADDRESS SELECTION

Address

SW1/3

378h

Off

 

278h

On

PARALLEL PORT INTERRUPT SELECTION

IRQ

JP3/A

JP3/B

7

Open

Closed

 

5

Closed

Open

SERIAL PORT 1 & 2 CONFIGURATION

Serial port 1

Serial port 2

SW1/1

SW1/2

COM1 (3F8h - 3FFh)

COM2 (2F8h - 2FFh)

Off

On

COM2 (2F8h - 2FFh)

COM3 (3E8h - 3EFh)

On

Off

COM3 (3E8h - 3EFh)

COM4 (2E8h - 2EFh)

On

On

Disabled

Disabled

Off

Off

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

JP1/A

JP1/B

JP1/C

JP1/D

4

Open

Open

Closed

Open

 

2

Closed

Open

Open

Open

 

3

Open

Closed

Open

Open

 

5

Open

Open

Open

Closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

JP2/A

JP2/B

JP2/C

JP2/D

3

Open

Closed

Open

Open

 

2

Closed

Open

Open

Open

 

4

Open

Open

Closed

Open

 

5

Open

Open

Open

Closed

REALTIME CLOCK/CALENDAR CONFIGURATION

Setting

SW1/4

Disabled

Off

Enabled

On

REALTIME CLOCK/CALENDAR INTERRUPT SELECTION

IRQ

JP4/A

JP4/B

2

Open

Closed

5

Closed

Open