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TWINCOM PROFESSIONAL

SIIG, INC.

TWINCOM PROFESSIONAL

Card Type

Serial card

Chipset Controller

Unidentified

I/O Options

Serial ports (2)

Maximum DRAM

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

10-pin serial port interface

JP2

25-pin serial port connector

S1

SERIAL PORT 1 CONFIGURATION

COM

JP3/A

JP3/B

JP3/C

JP3/D

COM1 (3F8h-3FFh)

Pins 1 & 2 closed

Open

Open

Open

 

COM2 (2F8h-2FFh)

Open

Pins 1 & 2 closed

Open

Open

 

COM3 (3E8h-3EFh)

Open

Open

Pins 1 & 2 closed

Open

 

COM4 (2E8h-2EFh)

Open

Open

Open

Pins 1 & 2 closed

 

Disabled

Open

Open

Open

Open

SERIAL PORT 1 INTERRUPT SELECTION

IRQ

JP4/A

JP4/B

JP4/C

JP4/D

4

PIns 1 & 2 closed

Open

Open

Open

 

2/9

Pins 2 & 3 closed

Open

Open

Open

 

3

Open

Pins 2 & 3 closed

Open

Open

 

5

Open

Pins 1 & 2 closed

Open

Open

 

Disabled

Open

Open

Open

Open

SERIAL PORT 2 CONFIGURATION

COM

JP3/A

JP3/B

JP3/C

JP3/D

Disabled

Open

Open

Open

Open

 

COM1 (3F8h-3FFh)

Pins 2 & 3 closed

Open

Open

Open

 

COM2 (2F8h-2FFh)

Open

Pins 2 & 3 closed

Open

Open

 

COM3 (3E8h-3EFh)

Open

Open

Pins 2 & 3 closed

Open

 

COM4 (2E8h-2EFh)

Open

Open

Open

Pins 2 & 3 closed

SERIAL PORT 2 INTERRUPT SELECTION

IRQ

JP4/A

JP4/B

JP4/C

JP4/D

Disabled

Open

Open

Open

Open

 

2/9

Open

Open

Pins 2 & 3 closed

Open

 

3

Open

Open

Open

Pins 2 & 3 closed

 

4

Open

Open

Pins 1 & 2 closed

Open

 

5

Open

Open

Open

Pins 1 & 2 closed

SERIAL PORT 2 ACTIVATION

Chip

Socket

16550

U2

1488

U4

1489

U6

Note: To activate serial port 2 upgrade chips must be installed.